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					Issuance #1




                                               SECTION 31 00 00

                                                EARTHWORK

PART 1 GENERAL

1.01 SECTION INCLUDES

      A.      Site work general requirements
              1. This Section does not supersede or replace any requirement in other Divisions.

      B.      Site description

      C.      Performance requirements

      D.      Material standards

      E.      Construction standards

1.02 RELATED REQUIREMENTS

      A.      Section 31 05 13 Soils For Earthwork

      B.      Section 31 12 00 Site Clearing

      C.      Section 31 20 00 Earth Moving

      D.      Section 31 22 19 Finish Grading

1.03 PROJECT SITE

      A.      Work is located at the College of Veterinary Medicine, Iowa State University, Ames, Iowa.
              1. See map on Drawings.

      B.      Limit access to site to locations shown on Drawings.

      C.      Confine construction operations to within construction limits shown on Drawings.

      D.      Layout:
              1. Owner will furnish the following site layout items:
                  a. Baseline horizontal control points
                  b. Elevation benchmarks
              2. Meet on site to review and accept Owner furnished site layout items.
              3. Furnish the following site layout items:
                  a. A sufficient quantity of stakes to construct the Work in satisfactory compliance with
                      lines and grades shown on Drawings.

1.04 WORK DESCRIPTION

      A.      Include the following major work items under this Contract:
              1. Site work associated with Small Animal Hospital Renovation and Addition.
              2. Utility work associated with Small Animal Hospital Renovation and Addition.




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      B.      Incidental Contract Items:
              1. Material and work items incidental to the Project and not paid for separately may include,
                   but not be limited to, the following material and work items:
                   a. Surface and subsurface dewatering
                   b. Storm water flow handling during construction
                   c. Material testing
                   d. Field testing
                   e. Construction fencing
                   f.   Traffic control during construction
                   g. Temporary site access roads
                   h. Obliteration and restoration of temporary site access routes.
                   i.   Temporary erosion control measures
                   j.   Sheeting and shoring during underground structure and utility construction
                   k. Excavation and verification of existing utilities
                   l.   Pipe bedding material
                   m. Connections to existing sewers and water mains
                   n. Maintaining sanitary service to users
                   o. Maintaining water service to users
                   p. Water main fittings
                   q. Coordination and cooperation with other Contractors
                   r.   Coordination and cooperation with utility companies
                   s. Protection of existing trees and plantings not removed
                   t.   Maintaining roadway surface during construction

1.05 REFERENCE STANDARDS

      A.      Conform with and test in compliance with applicable sections of the following standards and
              codes, latest edition, unless otherwise specified.
              1. American Association of State Highway and Transportation Officials (AASHTO)
                  (http://www.transportation.org/)
              2. American National Standards Institute (ANSI) (http://www.ansi.org/)
              3. American Society for Testing and Materials (ASTM) (http://www.astm.org/)
              4. American Water Works Association (AWWA) (http://www.awwa.org/)
              5. American Welding Society (AWS) (http://www.aws.org/w/a/)
              6. Federal Specifications (FS) (http://apps.fas.gsa.gov/pub/fedspecs/)
              7. Iowa Department of Transportation Standard Specifications (IDOT)
                  (http://www.erl.dot.state.ia.us/Start_Here.htm)
              8. Iowa Occupational Safety and Health Act of 1972 (IOSHA)
                  (http://www.iowaworkforce.org/labor/iosh/)
              9. Iowa State University Facilities Design Manual (FDM)
                  (http://projects.fpm.iastate.edu/IOWASTATE/en-us/Main.asp?sObjectId=1-3-fd-4-0-
                  2a5&iExpiration=1232053950916)
              10. Iowa Statewide Urban Design and Specifications (SUDAS) (http://www.iowasudas.org/)
              11. Manual of Accident Prevention in Construction by Associated General Contractors of
                  America, Inc. (AGC) (http://iweb.agc.org/iweb/Purchase/ProductDetail.aspx?Product_code=0100)
              12. Manual on Uniform Traffic Control Devices (MUTCD)
                  (http://mutcd.fhwa.dot.gov/pdfs/2003r1r2/pdf_index.htm)
              13. State Building Code (http://www.legis.state.ia.us/ACO/IAChtml/661.htm#chapter_661_300)
              14. Other standards and codes which may be applicable to acceptable standards of the
                  industry for equipment, materials and installation under the Contract.




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1.06 ADMINISTRATIVE REQUIREMENTS

      A.      Coordination:
              1. General:
                  a. Coordinate Contractor and subcontractor work schedules and site access for Owner
                        furnished items and work elements.
                  b. Furnish adequate personnel, on site supervision, equipment, and materials to
                        perform the Work within the construction schedule.
                  c. Mobilize equipment and materials to site the number of times required by site
                        constraints and sequence of the Work.
                  d. Minimize inconvenience to motorists and uses adjacent to site.
                  e. Prevent delays in construction and interruptions to continuous operation of utility
                        services.
                  f.    Coordinate clearing and grubbing of trees and brush with Owner.
              2. Utilities:
                  a. Coordinate temporary utility functions with Owner 1 week in advance of installation.
                  b. Do not interrupt offsite utilities serving facilities occupied by Owner or others unless
                        permitted in writing by Owner and then only after arranging to furnish temporary
                        utility services according to requirements in the Contract Documents.
                        1) Notify Owner not less than 2 days in advance of proposed utility interruptions.
                        2) Do not proceed with utility interruptions without Owner's written permission.
                  c. Owner will furnish personnel and equipment to locate and mark existing university
                        owned and operated utilities.
                        1) Request locates Monday through Friday 8:00 a.m. to 3:00 p.m. except during
                               university holidays.
                        2) Assign 1 person to work with Owner’s locator.
                        3) Locate Accuracy:
                               a) Plus or minus 3 feet in plan
                               b) Depth will vary.
                        4) Mark utilities in compliance with the Uniform Color Code of the American Public
                               Works Association, as shown in the following table:

                                     Utility                     Flags                   Ground Painting
                              Electric               Red with White lettering            Red
                              Telephone              Orange with White lettering         Orange        with
                                                     center                              White
                              Natural Gas            Yellow with Black lettering         Yellow
                              Steam                  Yellow with Blue lettering          Yellow with Blue
                                                     center
                              Domestic Water         Blue with White lettering           Blue
                              Chilled Water          Blue with Red lettering center      Blue with Red
                              Sanitary Sewer         Green with Black lettering          Black with Green
                                                     center
                              Storm Sewer            Green with White lettering          White with Green
                                                     center




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                   d.   Contact Iowa One Call (http://www.iowaonecall.com/) for locates to utilities not owned by
                        the university
                        1) Call at least 48 hours before beginning excavation.
                        2) Furnish the Iowa One Call operator with the following project information for
                             each locate requested:
                             a) Iowa State University College of Veterinary Medicine, 1600 S. 16th Street,
                                   Ames, IA 50011
                   e. Do not assume utilities indicated on Drawings are shown in exact locations.
              3.   Traffic Control:
                   a. Conduct operations with minimum interference to roadways, parking lots, adjacent
                        housing, and pedestrian traffic around the work area.
                   b. Do not close or obstruct roadways or walks without approval from Owner.
                   c. Coordinate traffic control with Owner and City of Ames or appropriate jurisdiction.
                   d. Provide signs, barricades or other traffic control devices in compliance with the
                        MUTCD.
                   e. Furnish, erect, operate, maintain, move and remove traffic control devices as
                        required.
                   f.   Check operation of traffic control devices daily.
                   g. Repair or replace damaged traffic control devices promptly.
                   h. Use additional traffic control devices or flaggers as required to protect the traveling
                        public.

      B.      Sequencing:
              1. Install erosion and siltation control devices and install fencing around site and existing
                  trees to remain as shown on Drawings.
              2. Protect existing trees from branch and root damage by prohibiting the following actions
                  within the drip line of existing trees:
                  a. Storing materials or vehicles
                  b. Traversing heavy equipment
              3. Complete clearing and stripping of the construction site in staging area.
              4. Demolish existing buildings, walks and other improvements as shown on Drawings.
              5. Perform site grading operations.
              6. Install utilities.
                  a. Install and maintain required fence for open trenches or open structures when left
                       unattended.
              7. Pave roadways, parking areas, walks, and ramps.
              8. Install plantings and landscape features
              9. Restore surface, seeding and/or sodding.

1.07 SUBMITTALS

      A.      Submit construction sequencing plan with schedule and key dates.
              1. Note any out-of-sequence work desired different from that shown under this Section,
                 Article 1.06, Paragraph B.
              2. Address site drainage, erosion control and temporary facilities at each stage of the Work.

1.08 QUALITY ASSURANCE

      A.      Material Tests:
              1. Provide materials tests as listed herein and as listed in detailed parts of the
                  Specifications.
              2. Notify Owner’s testing agency, Owner, and Design Professional when installation is
                  complete and ready for testing.




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      B.      Field Tests:
              1. Perform soil density and moisture tests on earthwork at locations selected by Design
                   Professional to verify compaction procedures are in compliance with Specifications.
              2. Determine moisture density results of soils encountered during construction in
                   compliance with ASTM D698 or ASTM D2922 Standard Proctor Density.
              3. Furnish sufficient tests to adequately control and represent compaction procedures.
                   a. Owner will perform assurance testing where appropriate.
              4. If compacted fill fails density and moisture tests, rework fill until specified density and
                   moisture is obtained.
                   a. Retest at no cost to Owner.
              5. If trench backfill or subgrade fails density tests, rework backfill or subgrade and retest
                   until specified density is obtained.
                   a. Retest at no cost to Owner.

1.09 DELIVERY, STORAGE, AND HANDLING

      A.      Maintain own storage areas for materials, except for topsoil and equipment where approved
              by Owner.

      B.      Store construction equipment and materials in areas designated on Drawings, not on street
              open to traffic.

PART 2 PRODUCTS NOT USED

PART 3 EXECUTION NOT USED

                                               END OF SECTION




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                                            SECTION 31 05 13

                                       SOILS FOR EARTHWORK

PART 1 GENERAL

1.01 SECTION INCLUDES

      A.   Amended Soils and Aggregate Furnished By Contractor
           1. Materials and testing for mixed amended soils
           2. Materials and testing for aggregate subsurface drainage layers

1.02 RELATED REQUIREMENTS

      A.   Section 31 00 00 Earthwork

      B.   Section 31 12 0 Site Clearing

      C.   Section 31 20 00 Earth Moving

      D.   Section31 22 19 Finish Grading

1.03 SUBMITTALS

      A.   Product Data for the Following Materials:
           1. Sand Furnished By Contractor:
               a. Furnish gradation and source
           2. Open graded stone Furnished By Contractor:
               a. Furnish gradation and source

      B.   Samples for the Following Materials:
           1. Topsoil Furnished by Contractor for Amended Soils:
              a. Sample visually inspected by Owner and compared to Owner furnished sample
              b. Owner reserves the right to obtain sample of in-place topsoil for acceptance testing.
           2. Amended Soil Furnished By Contractor:
              a. 1 gallon sample

      C.   Material Test Reports for Amended Soils Furnished by Contractor:
           1. Submit reports from a qualified testing agency indicating and interpreting test results for
               compliance with the following standards and with requirements indicated:
               a. Organic Content and pH measurement of amended soil mix in compliance with
                     NCR-13 Soil Test Procedures.
               b. Gradation of amended soil mix in compliance with ASTM D 5268-02 for amended
                     soil mix.

      D.   Field Control Tests of Amended Soils Furnished By Contractor:
           1. Perform and submit results of an adequate number of field control tests to demonstrate
                that amended soil is uniform and meets the required parameters.
                a. Submit 2 samples per amended soil batch prior to placement.
                b. Submit 1 amended soil sample taken within each rain garden, and 1 amended soil
                     sample per 100 linear feet of bioswale.

1.04 DELIVERY, STORAGE AND HANDLING

      A.   Deliver only materials that fully conform to these specifications or for which submittals have
           been approved for use by Owner.




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      B.   Deliver aggregate materials directly to site.

      C.   Deliver to the site only mixed amended soil approved by Owner.
           1. Unless specifically permitted by the Contract Documents, store and mix amended soil
                components at location shown on plans.

      D.   Limit amended soil stockpiled on site to small amounts for use in re-establishing grades during
           settling periods.
           1. Cover and protect amended soil stockpile from erosion.

      E.   Thoroughly clean stockpile and delivery areas in compliance with the pollution prevention plan
           and as directed by Owner.

1.05 SCHEDULING

      A.   Coordinate soil placement with preparation activities and recommended seeding/planting
           schedules to meet requirements of the Project.

PART 2 PRODUCTS

2.01 OWNER FURNISHED SOILS

      A.   None

2.02 SUBSTITUTIONS

      A.   Use only materials conforming to specifications unless approved by Owner and Design
           Professional.

      B.   Owner and Design Professional reserve the right to review a gradation analysis of local
           aggregate and approve its use.

      C.   Obtain approval from Owner prior to placing substitute material on site.

2.03 SOIL MATERIALS

      A.   Contractor Furnished Amended Soils:
           1. Natural loam uniformly composed from the A-horizon of soil profiles of local soils without
               admixture of subsoil, and has the following properties:
               a. Fertile and friable (i.e. not pulverized)
               b. Free from clay lumps, brush, litter, stones, roots, or similar objects larger than 1 inch
                    in any dimension, or other materials deleterious to plant growth
               c. Clean material free of weed propagules (seeds, rhizomes, and plants)
           2. Topsoil Properties For Use in Amended Soils:
               a. At least 8 percent organic matter, according to ASTM D 2974
               b. High degree of fertility
               c. Free of herbicides that prohibit plant growth
               d. pH level between 6.0 and 8.0




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               e.   Comply with the following mechanical analysis requirements:

                            Sieve Size                  Percent Passing
                               1 inch                         100%
                              1/2 inch                     95 to 97%
                              1/4 inch                     40 to 60%
                              No. 100                      40 to 60%
                              No. 200                      10 to 30%
               f.  On-site and Off-site Topsoil Source:
                   1) Obtain topsoil displaced from naturally well drained construction sites where
                        topsoil occurs at least 4 inches deep
                   2) Do not obtain topsoil from wetlands, e.g., marshes, fens, wet prairie, etc.
               g. Do not use material as topsoil that is stripped from the following sources:
                   1) Chemically contaminated soils
                   2) Areas from which the original surface has been stripped and/or covered over,
                        such as borrow pits, open mines, demolition sites, dumps, and sanitary landfills
               h. Owner will visually inspect and compare Contractor furnished topsoil to topsoil
                   furnished by Owner.
                   1) Owner reserves the right to obtain sample of in-place topsoil for acceptance
                        testing.
          3.   Coarse Sand Properties For Use in Amended Soils:
               a. Comply with the following mechanical analysis requirements:

                            Sieve Size             Percent Passing
                             3/8 inch                   100%
                               No. 4                  97% +/-3%
                              No. 16                 65% +/-20%
                              No. 50                 20% +/-10%
                             No. 100                  5% +/-5%


          4.   Compost Properties For Use in Amended Soils:
               a. Stable and weed free
               b. pH range of 5.5 to 8
               c. Organic content greater than 25 percent by weight based on a loss on ignition test
                  conforming to recommended chemical NCR-13 soil test procedures.
               d. Requirements of compost used for its organic properties:
                  1) Derived from material that consists of chipped, shredded, or ground vegetation
                       or clean, processed, recycled wood products
                  2) Processed or completed to reduce weed seeds, pathogens, and deleterious
                       material
                  3) Contain no paint, petroleum products, herbicides, fungicides, or other chemical
                       residues that would be harmful to plant or animal life
                  4) Contain no more than 0.1 percent by weight or volume of other deleterious
                       material, plastic, glass, metal, or rocks




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           5.   Amended Soil Mixes:
                a. Mix coarse sand and compost to produce well blended amended soils that comply
                   with the following requirements:

                         Amended Soil                               AMENDED SOIL TYPES
                        Test Properties                Turf            Planting Zone               Bioretention
                         Organic Materials          45 to 50%            30 to 40%                  20 to 30%
                              Sand Content          20 to 25%            30 to 35%                  50 to 60%
                        Silt & Clay Content         25 to 35%            30 to 35%                  20 to 30%
                                        pH          6.5 to 7.5           6.5 to 7.5                 6.8 to 8.0

                b.   Areas to receive Mash/ Emergent site mix shall have an amended soil type
                     consisting of 62.5% black dirt, 12.5% compost, and 25% sand.
                     1) Soils at Marsh/ Emergent site mix locations in bioretention cells vary. See
                           Amended Planting Soil Plan.
                c.   Analyze and report soil characteristics in compliance with ASTM D5268-02
                     1) NRC-13 test procedures for organic materials are also acceptable.
                d.   Test coarse sand, topsoil and compost before blending to obtain raw material
                     characteristics.
                e.   Submit test results to Owner for approval.
                f.   Upon approval of sand and compost materials, blend a sample batch of amended
                     soil and analyze in compliance with ASTM D5268-02.
                g.   Test the mix for percent organic material, percent sand, percent silt and clay, and
                     pH.
                h.   Adjust mix proportions and analyze until amended soil mix meets the above
                     specifications.
                i.   If the initial mix does not meet specifications, re-mix at different proportions and test
                     again in compliance with project specifications and ASTM D5268-02.
                j.   Submit test results in compliance with field control requirements.
                k.   Submit 2 discrete samples per amended soil batch for approval by Owner prior to
                     placement.
                l.   Thoroughly mix amended soil prior to placement.

2.04 AGGREGATE FOR BIORETENTION AREAS

      A.   Coarse Sand Properties For Use in Bioretention Bedding Layers:
           1. Comply with the following mechanical analysis requirements.

                        Sieve Size               Percent Passing
                         3/8 inch                     100%
                           No. 4                    97% +/-3%
                          No. 16                   65% +/-20%
                          No. 50                   20% +/-10%
                         No. 100                    5% +/-5%




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      B.   Open Graded Stone for Use in Bioretention Areas:
           1. Use open graded, coarse aggregate conforming to gradation requirements of ASTM C 33
              for size No. 57 crushed stone and with the following gradation:

                       Sieve Size            Percent Passing
                       1-1/2 inch                 100 %
                         1 inch                95% +/-5%
                        1/2 inch               45% +/-15%
                          No. 4                 5% +/-5%

PART 3 EXECUTION NOT USED

                                        END OF SECTION




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                                              SECTION 31 12 00

                                               SITE CLEARING

PART 1 GENERAL
1.01 SECTION INCLUDES
      A.      Demolition and removal of pavement materials and other items as shown on Drawings.
      B.      Recycling of removed materials as much as possible.
      C.      Identification and capping of active utilities as shown on Drawings.
      D.      Removal of utilities as shown on Drawings.
      E.      Filling, compacting, and grading of demolition area within the project limits or as otherwise
              shown on Drawings.
1.02 RELATED REQUIREMENTS
      A.      Section 31 00 00 Earthwork
      B.      Section 31 05 13 Soils For Earthwork
      C.      Section 31 20 00 Earth Moving
1.03 CONSTRUCTION SITE FENCE TYPES
      A.      The following table and definitions describe type and location requirements for construction
              fencing:

                                          No ground
                                                                Ground disturbed,         Ground disturbed,
                                    disturbance – suitable
                                                                  excavated, or             excavated, or
               Duration of Work         walking surface
                                                              trenched. Depth = 0”        trenched. Depth
                                       maintained at all
                                                                     to 48”.                exceeds 48”.
                                            times.
                Immediate Work
                                            Type D                    Type C                     Type C
                   Areas*
                   < 24 hours               Type C                    Type C                     Type C

                  0 to 30 days              Type B                    Type B                     Type B

                   > 30 days                Type B                    Type B                     Type A
              *Immediate work areas are continuously supervised areas where short term work is concluded
              and the area restored before the end of the work day.
              Type A       Galvanized steel chain link fencing supported by galvanized steel pipe posts
                           Minimum 6 feet high with top rail
                           Hinged, lockable gates to control access points
              Type B       Wood lath snow fencing supported by steel or fiberglass T-posts
                           Fence 4 feet high and T-posts spaced not more than 10 feet apart
              Type C       Orange plastic net fencing supported by steel or fiberglass T posts
                           Fence 4 feet high and T-posts spaced not more than 8 feet apart




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              Type D       Yellow nylon rope arranged in 3 spaced strands and supported by steel or
                           fiberglass T-posts, self supporting standards or other Owner approved support
                           Fence 4 feet high and supports spaced not more than 8 feet apart
                           Yellow caution tape may substitute for rope if supported by twine to prevent wind
                           damage.
1.04 ADMINISTRATIVE REQUIREMENTS
      A.      Utilities Coordination:
              1. Arrange and pay for disconnecting, removing, capping, and/or plugging utility services as
                     noted on Drawings.
                     a. Notify affected utility company in advance and obtain approval before starting work.
                     b. Schedule disconnects with Owner.
              2. Place markers to indicate location of disconnected services.
              3. Identify service lines and capping locations on copy of site plan retained by Contractor.
              4. See also requirements under Section 31 00 00, Article 1.06, Paragraph 2.
1.05 SUBMITTALS
      A.      Submit proposed plan of action to Owner that addresses, but is not limited to, the following
              items:
              1. Signed NPDES Permit and current SWPP Plan
              2. Sequence of clearing activity
              3. Necessary permits and notifications
              4. Protective fencing installation
              5. Traffic control installation
PART 2 PRODUCTS NOT USED
PART 3 EXECUTION
3.01 EXAMINATION
      A.      Verification of Conditions:
              1. Inspect existing conditions and become familiar with site clearing work.
              2. Request clarification of questions concerning existing conditions before commencing site
                   clearing.
3.02 PROTECTION OF IN-PLACE CONDITIONS
      A.      Roadways and Pedestrian Walks Adjacent to Site:
              1. Do not interfere with their use.
              2. Maintain safe passage.
      B.      Movement of Utilities and Infrastructure Adjacent to Site:
              1. Prevent movement, settlement, or collapse of adjacent utility services, walks, roadways,
                 driveways and adjacent protected trees.
                 a. Submit method of utility support system to Owner and Design Professional for
                      approval.
                 b. Assume liability for such movement, settlement, or collapse.
                 c. Promptly repair damage at no cost to Owner.
      C.      Public, Workers and Adjacent Property:
              1. Furnish, erect, and maintain barricades, fencing, and guardrails as required for
                   protection.
              2. Protect for duration of Project.
      D.      Existing Facilities, Utilities and Infrastructure to Remain:
              1. For existing roadway, drives, utilities, and other features or facilities on or adjacent to the
                   site that are to remain, protect from damage caused by work of this Section.


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              2.   Clean adjacent roadway on demand.
              3.   Protect for duration of Project.
      E.      Existing Active Utilities on Site to Remain:
              1. Locate and determine requirements for protection.
              2. Protect for duration of Project.
      F.      Existing Trees and Landscaping:
              1. Protect as shown on Drawings.
              2. Protect trees using construction fence in compliance with details shown on Drawings.
              3. Protect trees and landscaping that remain from damage, even if not identified on
                   Drawings.
3.03 DEMOLITION
      A.      Work with pneumatic or vibratory tools where approved by Owner.
      B.      Do not use explosives.
      C.      Use barricades or other means to protect the public, workers, and adjacent properties from
              falling debris and operating equipment adjacent to structures.
      D.      Place warning signs and lights at night in locations as shown on Drawings and in areas where
              required to prevent injury.
      E.      Where storm sewer and sanitary sewer are abandoned and not otherwise specified, remove
              manholes, intakes and piping 18 inches in diameter or larger.
      F.      Where approved by Owner and not otherwise specified, pipes less than 18 inches in diameter
              may be capped, slurry filled and allowed to remain in place.
      G.      Where storm sewer is encountered during excavation, remove piping and associated
              underground portions of roof drain piping.
      H.      Coordinate abandonment of existing storm sewer with site grading and proposed storm sewer
              construction to ensure positive storm drainage in all phases of the Work.
      I.      Perform demolition of private utilities in compliance with applicable authorities having
              jurisdiction.
              1. Allow private utilities access for salvage or relocation operations.
              2. Remove or plug abandoned underground utilities encountered during excavation.
      J.      Repair demolition performed in excess of that required at no cost to Owner.
      K.      Except where otherwise noted, demolished materials become property of Contractor.
      L.      Do not stockpile demolished materials on site.
      M.      Do not burn materials on site.
      N.      Immediately remove demolished materials from site to an approved landfill.
      O.      Remove contaminated, vermin infested, or dangerous materials encountered on site and
              dispose of by safe means to prevent endangering health of workers and the public.
              1. Before removal, report encountered dangerous or hazardous materials to Owner.
      P.      Remove tools and equipment upon completion of the Work.




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3.04 PAVED SURFACE REMOVAL
      A.      Saw cut surface material to full depth at designated removal lines.
      B.      Where paved areas are broken or damaged by Contractor beyond designated removal lines,
              remove material to new line designated by Owner and replace at no cost to Owner.
      C.      Where manholes, utility stop boxes, fire hydrants, utility vents, power poles and light poles that
              are required to remain in service and are located in walks or pavement, leave intact and
              remove sidewalk or pavement from around them.
              1. Exercise extreme care and caution to prevent damage to utilities.
              2. Repair damage to existing utilities at no cost to Owner.
      D.      Protect subgrade where paving removed.
      E.      Existing Asphaltic Concrete:
              1. Remove and stockpile asphaltic materials.
              2. Where used for pavement subbase, process by passing through a 1-1/2 inch flat sieve or
                   2 inch tilted vibrating screen.
              3. Recycle as much as possible and dispose of remaining material by doing 1 or more of the
                   following operations:
                   a. Use as unsuitable soil in compliance with requirements under Section 31 20 00,
                        Article 3.07.
                   b. Remove excess to an approved landfill designated for this type of material or to a
                        site designated by Owner.
                   c. Incorporate in granular subbase material (special backfill) or subbase stabilization.
3.05 TREE AND BRUSH REMOVAL
      A.      Except where designated in the Contract Documents or by Owner to be preserved or to be
              removed by Owner, remove field fences, trees, brush, stumps, roots, downed timber, hedges,
              woody and other herbaceous vegetation, rubbish, etcetera, from the project area and from
              borrow areas furnished by Owner.
              1. Cut, remove and dispose of trees defined as follows:
                   a. Trees more than 6 inches in diameter, including stumps, roots, and downed timber.
              2. Remove and dispose of brush defined as follows:
                   a. Pull or grub trees 6 inches or less in diameter not classified as hedge, including
                       stumps, roots, and downed timber.
                   b. Pull or grub hedge (shrubs planted close together in rows).
                   c. Remove vegetation and rubbish as required to clear site.
              3. Remove tree and brush material to an approved landfill designated for this type of
                   material or to a site designated by Owner.
3.06 TREE PROTECTION
      A.      Erect and maintain temporary Type B fencing around tree protection zones before starting site
              clearing.
              1. Do not store construction materials, debris, or excavated material within fenced area.
              2. Do not permit vehicles, equipment, material storage or foot traffic within fenced area.
              3. Maintain fenced area free of weeds and trash.
              4. Remove fence upon final completion of construction.
      B.      Do not excavate within tree protection zones, unless approved by Owner.
      C.      Notify Owner before doing work within tree protection zones.




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Phase 2 Small Animal Hospital Renovation and Addition                                           SITE CLEARING
Issuance #1




      D.      Where work for new construction is required within tree protection zones, hand clear and
              excavate to minimize damage to root systems.
              1. Use narrow tine spading forks, comb soil to expose roots, and cleanly cut roots as close
                  to excavation as possible.
              2. Cover exposed roots with burlap and water regularly.
              3. Temporarily support and protect roots from damage until they are permanently redirected
                  and covered with soil.
              4. Follow Owner direction for other materials and methods appropriate for the Project
              5. Backfill with soil as soon as possible.
      E.      Where trees and vegetation to remain are damaged by construction operations, notify Owner
              immediately and do the following operations at no cost to Owner:
              1. Repair damage to trees and shrubs as directed by Owner.
              2. Arrange for replacement of trees that cannot be repaired and restored to full growth
                 status as determined by Owner.
3.07 SITE FENCING
      A.      Install site fencing in compliance with the following requirements:
              1. Enclose site to prevent access by pedestrians and unauthorized personnel and vehicles.
                   a. Clearly define access points and include means to limit access to the site and
                          prevent inadvertent entry.
                   b. Maintain fencing in a neat and orderly condition.
              2. Where security of site installation is required, use fence type A (chain link) regardless of
                   duration or level of hazard.
                   a. Consider additional adjustments to the standard such as fence height, barbed wire
                          top strands, et cetera, as appropriate to the security risk.
              3. Support type A (chain link) fencing installed on paved areas with jersey barricades that
                   will not require penetration of paved surfaces.
              4. Support other fence types using weighted drums, post supports, or other method
                   approved by Owner that will not require penetration of paved surfaces.
              5. Install warning signs on fencing spaced not more that 50 feet apart with at least 1 on
                   each side of the site that read “Danger – Construction Area – No Entry – Authorized
                   Personnel Only”.
                   a. Install only signs professionally made of sign materials that can withstand outdoor
                          weather conditions for the duration of construction and can be easily read from a
                          distance of 20 feet.
              6. Where fencing is installed across existing walkways or roadways, use reflective or lighted
                   visual barriers and appropriate “Sidewalk Closed” or “Road Closed” signs.
              7. Install signs for closures of public streets and roadways that comply with the Manual on
                   Uniform Traffic Control Devices (MUTCD) latest edition (See Section 31 00 00, Article
                   1.05, Paragraph A12.)
              8. Where fencing is located adjacent to a roadway or walkway to remain in use, install
                   fencing set back a minimum of 3 feet where possible to allow for snow removal
                   operations.
              9. Install fencing required for tree protection in compliance with details on Drawings.
3.08 DISPOSAL
      A.      Recycle excess materials as much as possible.
      B.      Remove excess materials from site and deliver to an approved disposal area in compliance
              with applicable laws and ordinances and pay disposal fees where required.
      C.      Haul removed materials from site on covered or tarped trucks.




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3.09 REPAIR
      A.      Repair damage to adjacent paving and roadways caused by work of this Section at no cost to
              Owner.
3.10 CLEANING
      A.      Keep roadways free of debris.
      B.      Clean roadways daily to remove mud, soil, and dust on streets near points of site access.
      C.      Clean site daily and restore surface as construction progresses.


                                              END OF SECTION




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                                               SECTION 31 20 00

                                                  EARTH MOVING


PART 1 GENERAL

1.01 SECTION INCLUDES

      A.      Preparation of site for earthwork

      B.      Erosion control

      C.      Rough grading:
              1. Earth excavation and borrow
              2. Embankment construction
              3. Subbase construction

      D.      Turf amended soil areas

      E.      Planting zone amended soil areas

      F.      Bioretention amended soil areas

      G.      Soil surface maintenance

1.02 RELATED REQUIREMENTS

      A.      Section 31 00 00 Earthwork

      B.      Section 31 05 13 Soils For Earthwork

      C.      Section 31 12 00 Site Clearing

      D.      Section 31 22 19 Finish Grading

1.03 DESCRIPTION OF WORK

      A.      Excavation from existing ground surface to subgrade for pavement.

      B.      Embankment construction to finish grade.

      C.      Excavation for borrow, shoulders, slopes, open channel ditches, intersections, approaches,
              private entrances, or driveways.

      D.      Removal of unsuitable soils.

      E.      Subgrade construction, compaction and stabilization.

      F.      Adjustments to approximate grade of manholes, valves and other castings and water stop
              boxes.

      G.      Final grading and restoration.

      H.      Construction of amended soil areas.




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1.04 DEFINITIONS

      A.      Excavation:
              1. The following excavation classifications are found under IDOT Standard Specification
                  2102.02, with minor changes to adapt to building site work:
                  a. All site and borrow excavation will be classified as Class 10, Class 12, or Class 13
                       hereinafter defined and as indicated in the Contract Documents.
                       1) Class 10 Excavation:
                            a) Class 10 excavation shall include all normal earth materials such as loam,
                                 silt, gumbo, peat, clay, soft shale, sand, and gravel.
                            b) It shall include fragmentary rock handled in the manner normal to this
                                 class of excavation.
                            c) It shall include any combination of the above described materials and any
                                 other material not classified as Class 12 or Class 13.
                       2) Class 12 Excavation:
                            a) Class 12 excavation shall include the actual measured volume of granite,
                                 trap, quartzite, chert, limestone, sandstone, hard shale, or slate in natural
                                 ledges or displaced masses.
                            b) It shall also include the estimated or measured volume of rock fragments
                                 or boulders which occur on the surface or in subsurface deposits mixed
                                 with earth, sand, or gravel when their size, number, or location prevents
                                 them from being handled in a manner normal to Class 10 excavation.
                       3) Class 13 Excavation:
                            a) Class 13 excavation shall include all materials included under the
                                 definitions of Classes 10 and 12 and any other material encountered,
                                 regardless of its nature.
                            b) The various materials encountered in Class 13 excavation shall be used or
                                 removed as provided for the various kinds of material.
                            c) No separate measurements of such various classes of materials will be
                                 made. This classification covers work commonly referred to as
                                 “Unclassified Excavation”.
                            d) The Contract Documents will specify the limits for Class 13 excavation.
                                 Excavation within these limits shall not be classified as Class 10 or Class
                                 12 excavation.

      B.      Borrow:
              1. The following borrow definitions are found under IDOT Standard Specification 2102.06
                  with minor changes to adapt to building site work:
                  a. Unless otherwise provided in the Contract Documents, when the quantity of material
                       required for embankments is not available within the limits of the [project] cross
                       sections or specific borrow areas as indicated, the Contractor shall make up the
                       deficiency from borrow areas furnished by the Owner or furnish equivalent material
                       from alternate borrow areas.
                       1) Mandatory Borrow Area:
                            a) An area furnished by the Owner from which the Contractor is expected to
                                 obtain borrow material and to operate in the area in accordance with the
                                 Contract Documents.
                            b) Mandatory borrow areas will be designated in the Contract Documents.
                            c) Where a mandatory borrow area is designated in the Contract Documents,
                                 it is mandatory that borrow material be obtained from the borrow location
                                 designated unless permission is obtained from the Owner to obtain borrow
                                 from another location.




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                        2)   Alternate Borrow Area:
                             a) An area outside the site furnished or to be furnished by the Contractor
                                  from which the Contractor may obtain borrow material.
                             b) Use shall be in accordance with the Contract Documents.
                             c) The Contractor is responsible for obtaining all rights associated with this
                                  area and for use of this material.

1.05 REFERENCE STANDARDS

      A.      American Association of State Highway and Transportation Officials (AASHTO)
              (http://www.transportation.org/)

      B.      ASTM International (ASTM) (http://www.astm.org/)

      C.      Iowa Department of Transportation (IDOT) Standard Specifications with latest revisions,
              Supplemental Specifications, and Material Instructional Memorandums (Material IMs)
              (http://www.erl.dot.state.ia.us/Start_Here.htm)
              1. Designated by IDOT “Standard Specification Number", Supplemental Specification
                     Number” or "Material IM Number" in this Section.

      D.      Iowa Statewide Urban Design and Specifications (SUDAS) (http://www.iowasudas.org/)

      E.      National Pollutant Discharge Elimination System (NPDES) (http://cfpub.epa.gov/npdes/)

      F.      Recommended Chemical Soil Test Procedures by North Central Region Committee 13 (NCR-
              13 Soil Test Procedures) (http://extension.missouri.edu/explorepdf/specialb/sb1001.pdf)

1.06 ADMINISTRATIVE REQUIREMENTS

      A.      Coordination:
              1. Expose possible coordination conflicts in advance of construction, such as utility lines
                  and drainage structures.
              2. Verify elevations and locations of each utility and verify clearance for proposed
                  construction.
              3. Complete other elements of the Work which can affect line and grade in advance of other
                  open cut construction unless noted on Drawings.
              4. Coordinate abandonment of existing storm sewer or other drainage facilities with site
                  work and grading to ensure positive drainage in all phases of the Work.
              5. Notify Owner of conflicts discovered or changes needed to accommodate unknown or
                  changed conditions.

      B.      Coordinate the following activities with utility owners that have facilities in or near the work
              area:
              1. Location of utility lines, mains, cables, and appurtenance shown on Drawings or from
                   information furnished by utility companies and Owner.
              2. Excavation and exposing of underground utilities in line of the Work.
                   a. Confirm location of underground utilities by excavating ahead of the Work.
                   b. Verify exact location of utilities by using hand excavation methods within 18 inches
                        of marked utility lines as required by Iowa Code Chapter 480.




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      C.      Notify Owner and utility company immediately if utility line is damaged during construction and
              coordinate repair within 24 hours.
              1. Contractor Responsibility For Utility Coordination and Damage:
                   a. Be solely responsible for all utility coordination and construction in area of existing
                       utilities.
                       1) No claims for additional compensation allowed to Contractor for interference or
                              delay caused by utility company.
                   b. Pay for damage to utilities or private or public property owners due to utility
                       disruption.

      D.      Preconstruction Meeting:
              1. Attend Owner-facilitated preconstruction meeting.

      E.      Sequencing:
              1. Obtain necessary permits.
              2. Install required traffic control and tree protection.
              3. Remove items as shown on Drawings.
              4. Install erosion control.
              5. Construct underground utilities.
              6. Construct Project in stages as shown on Drawings.
              7. Adjust manholes and other fixtures to new grades.
              8. Backfill and finish grade earth surfaces as shown on Drawings.

      F.      Scheduling:
              1. Soil Unloading and Loading on University Property:
                  a. Where soil removed from site is deposited on university property, schedule with
                       Owner a minimum of 2 working days prior to depositing soil.
                  b. Where amended soil is furnished by Owner, schedule with Owner a minimum of 2
                       working days prior to loading soil.

1.07 SUBMITTALS

      A.      Construction Schedule and Sequencing:
              1. Submit prior to commencing site operations.
              2. Refer to Division 1 for information on critical schedule items.

      B.      Results of Standard Proctor and In-Place Density Tests

      C.      Erosion control measures:
              1. Completed NPDES Permit
              2. Silt fence
              3. Seed mixtures

      D.      Test Results on Contractor Furnished Borrow Material

      E.      Material Certifications if Requested by Owner:
              1. Granular subbase
              2. Stabilization materials
              3. Dust control




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1.08 DELIVERY, STORAGE, AND HANDLING

      A.      Deliver only materials that fully conform to these specifications, or for which submittals have
              been furnished to Owner and approved for use.

      B.      Immediately remove cleared, grubbed, and excavated material in locations that will minimize
              environmental damage, protect adjacent areas from runoff, and not interfere with operations.
              1. Control erosion around stockpiles.

      C.      Immediately remove existing topsoil from site and stockpile at location shown on the plans.
              1. Based on strip depth of 12 inches or the depth of existing topsoil, whichever is less.

      D.      Amended Soils:
              1. Compost from an Owner operated facility four miles away at 52097 260th Street, Ames,
                 Iowa is available to the contractor at a cost. Hauling of the compost from the Owner
                 operated facility to the location of where the amended soil is to be mixed as shown on the
                 plans shall be by the contractor. Other compost sources will only be allowed if Owner
                 operated facility can not supply adequate quantities of compost.

      E.      Remove unsuitable and excess material from site.

1.09 FIELD CONDITIONS

      A.      If contaminated soils, historical artifacts, or other environmental or historic items are
              encountered, stop work and notify Owner immediately.

      B.      Do not use explosives.

      C.      Conform to State and Federal requirements.

      D.      Abandoned Utilities:
              1. Unless otherwise specified, remove abandoned utility lines including water mains, sewer
                  mains, telephone conduits, service lines, et cetera required to complete the Work, and
                  legally dispose material off site.

      E.      Bioretention Area Protection:
              1. To protect existing soil permeability, prohibit unnecessary vehicle traffic within
                   bioretention areas shown on Drawings.
              2. Where possible, install a Type B fence around bioretention areas.
                   a. See fence type definitions under Section 31 12 00, Article 1.03.

PART 2 PRODUCTS

2.01 OWNER FURNISHED MATERIALS

      A.      Turf seeding, No Mow grass, and plantings labeled as “completed by Iowa State University”
              on the plans shall be furnished and installed by Owner.

      B.      Fill material available to the contractor is located northeast of the site as shown on the plans.
              Hauling of the material shall be by contractor.

2.02 SUBSTITUTIONS

      A.      Use only materials conforming to specifications unless approved by Owner and Design
              Professional.




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      B.      Owner and Design Professional reserve the right to review a gradation analysis of local
              aggregate and approve its use.

      C.      Obtain approval from Owner prior to placing substitute material on site.

2.03 EXCAVATION MATERIALS

      A.      Class 10 Excavation:
              1. Excavation of all normal excavation and borrow such as loam, silt, gumbo, peat, clay, soft
                  shale, sand, gravel and fragmentary rock.

      B.      Class 12 Rock Excavation:
              1. Material deposits so firmly cemented together that they cannot be removed without
                  continuous use of pneumatic tools or blasting.

      C.      Class 13 Unclassified Excavation:
              1. Excavation of all materials encountered, regardless of nature.
              2. Use or remove the various materials encountered as provided for the various types of
                  material.

      D.      Structures:
              1. Concrete structures
              2. Manholes
              3. Storm drain inlets

      E.      Surfacing Materials:
              1. Concrete pavement
              2. Asphaltic pavement
              3. Sidewalks

      F.      Rubbish and Debris:
              1. Unsuitable materials such as trees, stumps, waste construction materials, scrap metals,
                  and other materials not suitable for backfilling or for topsoil.

      G.      Unsuitable or Unstable Materials:
              1. Material encountered during excavation above or below grade which cannot be properly
                  placed in the subgrade of cut or fill section.

2.04 EMBANKMENT MATERIALS

      A.      Suitable Soils:
              1. Meet the following requirements:
                   a. 95 pcf or greater density (ASTM D698 Standard Proctor Density).
                   b. AASHTO M145-91 index of less than 30.
              2. Soils not meeting these requirements are considered unsuitable soils.
              3. Below surface of water, place only clean granular material.

      B.      Select Soils:
              1. Owner approval of soils and their use for select subgrade treatments is required based
                  on AASHTO M145-91.
                  a. Cohesive Soils:
                       1) Meet the following requirements:
                            a) 45 percent or less silt size fraction.
                            b) 110 pcf or greater density (ASTM D698 or ASTM D2922 Standard Proctor
                               Density).
                            c) Plasticity index greater than 10.


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Phase 2 Small Animal Hospital Renovation and Addition                                       EARTH MOVING
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                             d) A-6 or A-7-6 soils of glacial origin.
                   b.   Granular Soils:
                        1) Meet the following requirements:
                             a) 110 pcf or greater density (ASTM D698 or ASTM D2922 Standard Proctor
                                  Density).
                             b) 15 percent or less silt and clay.
                             c) Plasticity index, 3 or less.
                             d) A-1, A-2, or A-3 (0).
              2.   Owner may authorize a change in select soils subject to materials available locally at time
                   of construction.

      C.      Granular Subbase:
              1. Class A Subbase (IDOT Special Backfill):
                  a. Clean, crushed stone, or crushed concrete with the following gradation:

                               Sieve Size            Percent Passing
                               1 1/2 inch                 100%
                                 No. 8                  15 - 45%
                                No. 200                  0 - 10%
                        IDOT Gradation #30 (IDOT 4109 and 4132)

                   b.  Owner may authorize a change in gradation subject to materials available locally at
                       time of construction.
              2.   Class B Subbase – Open Graded (IDOT Granular Subbase):
                   a. Clean, crushed stone, or crushed concrete having the following gradation:

                               Sieve Size            Percent Passing
                                 1 inch                   100%
                                 No. 8                  10 to 35%
                                 No. 50                 0 to 15%
                                No. 200                  0 to 6%
                        IDOT Gradation #12 (IDOT 4109 and 4121)

                   b.  Owner may authorize a change in gradation subject to materials available locally at
                       time of construction.
              3.   Class C Subbase (Reclaimed Asphalt Product – RAP):
                   a. Process salvaged asphalt cement concrete and unclassified reclaimed asphalt
                       cement pavement (Iowa DOT 2303.02) to meet Iowa DOT special backfill
                       requirements (Gradation #30).

      D.      Stabilization Materials:
              1. Clean, crushed stone, or crushed concrete, with the following gradation:

                             Sieve              Percent Passing
                          2-1/2 inch                 100%
                            2 inch                90 to 100%
                          1-1/2 inch               35 to 70%
                            1 inch                  0 to 15%
                           1/2 inch                 0 to 5%



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Phase 2 Small Animal Hospital Renovation and Addition                                         EARTH MOVING
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              2.   Owner may authorize a change in gradation subject to materials available locally at time
                   of construction.

      E.      Unsuitable Material:
              1. Do not use rubbish, debris, construction waste and soil material encountered during earth
                  moving above or below grade that does not meet the requirements under Paragraph
                  2.03A Class 10 Excavation or requirements under Paragraph 2.03B Class 12 Rock
                  Excavation and cannot be placed properly elsewhere on the project following
                  requirements under Article 3.05 Unsuitable Soils.
              2. Do not determine suitability of soil material based on excess moisture.

2.05 EQUIPMENT

      A.      Hauling Equipment:
              1. Comply with Iowa DOT Standard Specifications Section 2001.
              2. Side-dump trucks are prohibited on site and University owned borrow and stock pile
                  areas.
              3. Sheepsfoot Roller:
                  a. Consists of 1 or more drums having studs or feet projecting not less than 6-1/2
                        inches from surface of drum
                  b. Load roller so not less than 200 psi is exerted on a single row of feet parallel to drum
                        axle.
              4. Pneumatic Tired Roller:
                  a. Has tires not smaller than the 7.50x15 size
                  b. Load roller to produce a compactive effort not less than 200 pounds per inch width
                        of roller, based on maximum ground contact width.
                  c. Inflate tires to not less than 60 psi, plus or minus 5 psi maximum.
              5. On embankments constructed primarily of sand or other granular material, a pneumatic
                  tired roller weighing not less than 200 pounds per inch width of roller may be substituted
                  for a sheepsfoot roller.

2.06 DUST CONTROL

      A.      Calcium Chloride:
              1. Comply with IDOT Standard Specification 4194.01.

      B.      Lignosulfonates (Tree sap):
              1. Lignosulfonate 58A.
              2. Other commercially available Lignosulfonate products intended for dust control if
                  approved by Owner.

2.07 EROSION CONTROL

      A.      Seed Mixtures:
              1. Comply with requirements of surface restoration drawings or IDOT Standard
                  Specification 2601 for seed, fertilizer and mulch.

      B.      Revetment Stone and Erosion Stone:
              1. Comply with IDOT Standard Specification 4130.

      C.      Silt Fence and Engineering Fabrics:
              1. Comply with IDOT Standard Specification 4196.

      D.      Jute Mesh and Wood Excelsior Mat:
              1. Comply with IDOT Standard Specification 4169 for materials including staples or stakes.


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      E.      Engineering Fabric:
              1. Furnish and install as required by IDOT Standard Specification 4196.01 (B) and/or (C) as
                  appropriate.
              2. Use suitable material listed in IDOT Material IM 496.01

      F.      Erosion Blanket:
              1. For material used within bioretention areas and areas of concentrated flow, comply with
                  IDOT Standard Specification 4169 for ditch protection.
                  a. Use suitable material listed in IDOT Material IM 496.01.
              2. For material used on disturbed side slopes of bioretention areas outside areas of
                  concentrated flow, comply with IDOT Standard Specification 4169 for slope protection.
                  a. Use suitable material listed in IDOT Material IM 496.01.

2.08 PERFORATED PIPE

      A.      Furnish and install as required by IDOT Standard Specification 4146.

PART 3 EXECUTION

3.01 VERIFICATION OF CONDITIONS

      A.      Verify suitability of excavated materials for reuse as backfill.

3.02 PROTECTION OF IN-PLACE CONDITIONS

      A.      Protect existing facilities, trees, and shrubs to remain in place.
              1. Do not disturb trees within drip line without Owner approval.

      B.      Protect bench marks, control points, and land survey monumentation.

      C.      Protect and maintain utility services, some of which may not be shown on Drawings.

      D.      Locate, mark, and protect existing utilities and facilities in the work area.

3.03 GENERAL INSTALLATION

      A.      Construct improvements with best current construction practice and equipment.

      B.      Give access to utility service locations, such as valves, manholes, and utility poles.

      C.      Support and protect utility lines, poles, and appurtenances in conflict with line and grade of the
              Work during construction.

3.04 STRIPPING TOPSOIL

      A.      Mow lawn areas, grass and growing crops or other herbaceous vegetation close to the ground
              and remove from site.

      B.      Remove 12 inches or the existing depth of on-site topsoil, whichever is less.
              1. Stock pile topsoil on location shown on plans.

3.05 EXCAVATION

      A.      Notification:
              1. Notify Owner prior to start of excavation activities.




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      B.      Removal and Stockpiling:
              1. Immediately remove cleared, grubbed, and excavated material in locations that will
                 minimize environmental damage, protect adjacent areas from runoff, and not interfere
                 with operations.
                 a. Provide control erosion around stockpiles.

      C.      Excavation:
              1. Excavate to prescribed grade.

      D.      Dewatering:
              1. Drain or dewater below grade excavation on site.

      E.      Rock Excavation:
              1. When excavation to grade line results in a surface consisting of loose or solid rock,
                  excavate 1 foot below finished subgrade.
              2. Do not allow rock larger than 3 inches within 1 foot of subgrade.
              3. Where approved by Owner, earth backfill may be obtained within site limits where
                  suitable material is available.
              4. Conduct operations to give Owner the opportunity to cross-section before backfill.

      F.      Shaping of Borrows:
              1. Create borrow areas regular in cross section to permit accurate measurement.
              2. Carefully blend to natural land forms and avoid unnecessary damage to the land.
              3. Do not turn natural drainage of surface water toward adjoining land uses or owners
              4. Use strict diligence in draining surface water in its natural course or channel.
              5. Implement erosion and sediment controls in borrow areas as approved by Owner and
                  Professional Consultant.
              6. Complete excavation consistent with existing natural drainage conditions.

      G.      Unsuitable or Unstable Materials:
              1. Remove unsuitable or unstable materials to a depth specified by the Contract
                  Documents, or as directed by the Owner.
              2. The need for and type of stabilization will be determined by Owner.
              3. Remove soft areas and backfill with approved materials.
              4. If stabilization materials are used, furnish weight tickets at time of delivery.
              5. For disposal of unsuitable or unstable materials, see requirements under this Section,
                  Article 3.07.

      H.      Drainage:
              1. Initiate control measures as required by the pollution prevention plan.
              2. Construct temporary drainage facilities to maintain a well drained site.
                   a. When necessary to prevent damage to the Work or adjoining land use, interrupt
                       natural drainage or flow of artificial drains.
              3. Restore original drainage as soon as conditions permit.
              4. Correct damage resulting from failing to control erosion or construct artificial drainage at
                   no cost to Owner.

      I.      Utility Poles:
              1. Work around existing poles if impractical to remove or scheduling does not permit
                    removal of utility poles before excavation begins.

      J.      Compaction:
              1. Unless otherwise specified by the Contract Documents, compact embankments 2 feet
                 outside of paved surface edges to meet 95 percent of Maximum Standard Proctor
                 Density and moisture range of optimum moisture to 4 percent above optimum.



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3.06 EMBANKMENT CONSTRUCTION

      A.      Notification:
              1. Notify Owner prior to start of embankment activities.

      B.      Construction to Prescribed Grade:
              1. Place horizontal layers not over 8 inches in loose thickness.
              2. Place each layer full width of embankment and smoothed to uniform depth by motor
                  patrol, bulldozer, or other means acceptable to Owner.
              3. Where approved by Owner, deposit soils containing roots, sod, or other vegetable matter
                  outside of parking area or shoulder line and within 3 feet of outer embankment limits.
              4. Distribute stone throughout embankment to avoid pockets.
              5. Do not place stone larger than 3 inches within 1 foot of subgrade.
              6. Do not place tree stumps or large woody objects in the embankment.

      C.      Step or Bench Operations:
              1. Step or bench existing slopes greater than 5 horizontal to 1 vertical to connect existing
                  grade with new fill.

      D.      Runoff Control:
              1. Shape outer portion of embankment to be lower than center.
              2. If rain is likely to occur, smooth and compact to shed water.

      E.      Compaction with Moisture and Density Control:
              1. Unless otherwise specified in the Contract Documents, compact embankments with
                 moisture and density control as defined by IDOT Standard Specification 2107.08.

      F.      Compaction of Embankments:
              1. Paved Areas:
                 a. Meet 95 percent of Maximum Standard Proctor Density and moisture range of
                      optimum moisture to 4 percentage points above optimum moisture.
              2. Turf Areas and Planting Zones:
                 a. In the top 18 inches, compact to maximum 85 percent of Maximum Standard Proctor
                      Density and moisture range of optimum moisture to 4 percent above optimum.
                 b. Test following requirements under Article 3.09 Field Quality Control.

      G.      Type A Compaction:
              1. When Type A Compaction (defined in IDOT Standard Specification 2107.05) is specified
                  in the Contract Documents, do 1 of the following 2 procedures:
                  a. Compact with Moisture and Density Control for Type A Compaction
                       1) Furnish required testing at no cost to Owner.
                  b. Compact in compliance with the following requirements:
                       1) Compact until full weight of sheepsfoot roller is supported entirely on its feet
                            (walkout), but not less than 1 pass per inch of loose material.
                       2) Consider roller supported when feet do not penetrate more than 3 inches into
                            material being compacted.
                       3) For soil too wet to sufficiently compact, do the following operations:
                            a) Perform 1 discing per 2 inches of loose thickness.
                            b) Cut and stir full depth of layer.
                            c) Maintain interval not longer than 2 hours between successive discing.
                            d) Compact by specified rolling.
                       4) For soil too dry to sufficiently compact, do the following operations:
                            a) Moisten material.
                            b) Manipulate soil to secure uniform moisture.
                            c) Compact by specified rolling.



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                       5)   Where compacting adjacent to structures, do the following operations:
                            a) Place fill to same level as fill operation progresses.
                            b) Hand compact that which cannot be rolled by mechanical tamper.

3.07 UNSUITABLE SOILS

      A.      Placement:
              1. Place in the Work only as approved by Owner.

      B.      Stone Removal:
              1. Remove stones larger than 6 inches from site as directed by Owner.

      C.      Limited Use:
              1. Use other unsuitable materials in the Work in compliance with the following definitions:
                                     USE                                           MATERIALS
                Slope dressing only:                              1. Peat or muck
                                                                  2. Soils with plastic index of 35 or greater
                                                                  3. A-7-5 or A-5 (AASHTO) having a density
                                                                      less than 85 pcf (ASTM D698 or ASTM
                                                                      D2922 Standard Proctor Density)
                Type C Placement – placed 3 feet below            1. Soils other than A-7-5 or below subgrade
                subgrade and 2 feet outside curbline in fills:        A-5 having a density of 95 pcf or less
                                                                      (ASTM D698 or ASTM D2922 Standard
                                                                      Proctor Density)
                                                                  2. Soils other than A-7-5 or A-5 containing
                                                                      3.0 percent or more carbon
                Type B Placement – placed 5 feet below            1. A-7-6 (plasticity index of 30 or greater)
                subgrade and outside shoulders in fills:              residual clays (overlying bedrock)
                                                                      regardless of classification
                Type A Placement – placed in layers of 8          1. Shale
                inches maximum thickness 5 feet below             2. A-7-5 or A-5 soils having a density
                subgrade and 2 feet outside curbline in fills         greater than 86 pcf but less than 95 pcf
                with alternate 8 inch maximum thickness               (ASTM D698 or ASTM D2922 Standard
                layers of suitable soil or soils other than A-7-      Proctor Density)
                5 or A-5 containing 3.0 percent or more
                carbon:
              Placement types are based on types defined in IDOT Standard Specification 2102.06 A.3.
              A-5, A-7-5 & A-7-6 refer to soil group classifications of the AASHTO Soil Classification
              System.

3.08 SUBGRADE PREPARATION

      A.      Notification:
              1. Notify Owner prior to start of subgrade activities.

      B.      Shaping:
              1. Shape and consolidate subgrade in preparation for placement of pavement.

      C.      Uniform Composition:
              1. Provide uniform composition at least 12 inches below top of subgrade under new paving
                   plus 2 feet on each side.

      D.      Subgrade Compaction in Fill Sections:
              1. Comply with requirements under this Section, Article 3.06, Paragraph F.



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      E.      Subgrade Compaction in Cut Sections:
              1. Disk, scarify, mix and recompact the top 12 inches of subgrade with moisture and density
                  control.
              2. Use disks (approximately 36 inches in diameter) and rollers (approximately 60 inches in
                  diameter) adequately sized to ensure moisture and density control at minus 12 inches.
                  a. If work area or equipment is not sized to perform moisture and density requirements
                       at minus 12 inches, perform the following operations.
                       1) Excavate top 6 inches of subgrade, scarify, mix, and recompact next 6 inches
                            of subgrade with moisture and density control.
                       2) Pulverize, mix, and replace top 6 inches of subgrade and compact.
              3. Compact to not less than 95 percent of Maximum Standard Proctor Density with moisture
                  content not less than optimum or more than 4 percent above optimum.

      F.      Stone Removal:
              1. Remove stones over 6 inches in size from site.
              2. Deliver to Owner designated location.

      G.      Rut Removal:
              1. If ruts or other objectionable irregularities form in subgrade during construction, do the
                  following operations:
                  a. Reshape and re-roll subgrade before placing pavement.
                  b. Fill ruts or other depressions with material similar to other subgrade material.
                  c. Compact.

      H.      Future Trimming:
              1. Construct to elevation and cross section such that, after rolling, surface will be above
                  required subgrade elevation.

      I.      Proof Rolling:
              1. Proof roll subgrade with loaded tandem axle truck to determine uniformity and stability of
                  subgrade.

      J.      Unstable Material Removal:
              1. If soft or yielding areas are located, remove unstable materials and replace with suitable
                  materials and compact as specified.

      K.      Final Subgrade:
              1. Complete final subgrade by excavation to grade by use of steel shod template supported
                   on side forms or support rollers or by use of an automatically controlled subgrade
                   excavating machine.

      L.      Subgrade Check:
              1. Verify subgrade elevation and grade by method approved by Owner prior to paving.
              2. Where required, correct subgrade elevation and re-check until approved by Owner.

      M.      Subgrade Maintenance:
              1. Maintain subgrade prior to and during paving operations.
              2. Repair damaged or disturbed areas prior to paving.

      N.      Lawn Areas:
              1. Compact lawn areas to approximately 80 to 85 percent of Maximum Standard Proctor
                  Density.




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      O.      Planting Zones:
              1. Finish planting zones 18 inches below final grade, including transitions, to provide
                   positive subgrade drainage.
              2. Compact planting zones to a maximum 80 to 85 percent of Maximum Standard Proctor
                   Density.

      P.      Bioretention Areas:
              1. See Drawings and requirements under this Section, Article 3.13.

3.09 CLASS A, B & C GRANULAR SUBBASE

      A.      See class definitions under this Section, Article 2.04, Paragraph C.

      B.      Subbase:
              1. Compact special backfill and granular subbase in compliance with the following
                  requirements:
                  a. Not less than 95 percent of Maximum Standard Proctor Density or 70 percent
                       Relative Density (ASTM D4253 and D4254)
                  b. Moisture content not less than optimum or more than 4 percent above optimum.

      C.      Subgrade:
              1. Compact and shape smooth before subbase material is placed.

      D.      Water Treatment:
              1. Deliver granular material to the subgrade with water previously added uniformly
                  throughout the granular material.

      E.      Moisture Control:
              1. Deliver material to the site with moisture content between 5 percent below and 5 percent
                  above optimum.
              2. Maintain moisture in the granular subbase until compaction is completed.

      F.      Final Elevation:
              1. Where subbase is overbuilt, trim down to design elevation and shape to final template
                   with an automatically controlled trimming machine.
                   a. Salvage and spread excess material on another approved project location or
                        operation.
              2. Conform to design profile and cross section such that no point is higher than the
                   designed elevation and no point is lower than 0.05 foot below designed elevation.
              3. Uniformly moisten the top 1 inch of the subbase prior to paving.
              4. Do not allow hauling equipment and other traffic on completed Class B or C subbase
                   (granular subbase).

3.10 FIXTURE ADJUSTMENT

      A.      Set tops of existing manholes even with finished pavement grade or finished topsoil grade.

      B.      Set bottom of existing hydrants even with finished grade.

      C.      Set tops of existing fixtures, ground boxes and appurtenances even with finished grade of
              pavement, driveway, sidewalk, or topsoil, adding extension sections as required to be even
              with grade.




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3.11 TURF AREA CONSTRUCTION

      A.      Finish excavation and embankment work in compliance with contract document grade and
              cross section.

      B.      Leave designated planting zones 6 inches below finish grade and slope surfaces to drain.

      C.      Grade and slope surfaces to drain.

      D.      Scarify construction traffic areas, material stockpile areas, construction trailer areas and other
              compacted soils to a depth of 12 inches prior to finish grading.

      E.      Use materials in the construction of planting zones that comply with requirements under
              Section 31 05 13.

      F.      Place 2 inches of turf amended soil in a uniform depth in turf area and mix with the top 6
              inches of subgrade with scarifying equipment of adequate size and power to handle materials
              encountered.

      G.      Place additional turf amended soil 4 inches deep on turf area surface for a total of 6 inches.

      H.      Smooth and finish grade to provide good seed bed.

      I.      Prohibit construction traffic on finished turf areas.

      J.      Monitor settlement until seed is established, adding material as needed and smoothing by
              hand methods where required to maintain required finish grade.

3.12 PLANTING ZONE CONSTRUCTION

      A.      Finish excavation and embankment work in compliance with contract document grade and
              cross section.

      B.      Leave designated planting zones 18 inches below finish grade and slope surfaces to drain.
              1. Unless otherwise indicated on Drawings, planting zones extend out 15 feet from face of
                  building.
              2. Construct other planting zones where designated on Drawings.

      C.      Scarify construction traffic areas, material stockpile areas, construction trailer areas and other
              compacted soils to a depth of 12 inches prior to finish grading.

      D.      Use materials in the construction of planting zones that comply with requirements under
              Section 31 05 13.

      E.      Place 4 inches of planting zone amended soil in a uniform depth in planting zone and mix with
              the top 6 inches of subgrade with scarifying equipment of adequate size and power to handle
              the materials encountered.

      F.      Place additional planting zone amended soil 14 inches deep on planting zone surface for a
              total of 18 inches.

      G.      Shape to slope and cross section.

      H.      Smooth and finish grade to provide a well drained and sloped planting zone suitable for
              planting.

      I.      Prohibit construction traffic on finished planting zones.


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      J.      Monitor settlement for 1 month, adding material as needed and smoothing by hand methods
              where required to maintain required finish grade.

3.13 BIORETENTION AREA CONSTRUCTION

      A.      Verify subgrades for bioretention amended soil areas are constructed to lines and elevations
              shown on Drawings.

      B.      Install protective silt fence before placement of bioretention material.

      C.      Use materials in the construction of planting zones that comply with requirements under
              Section 31 05 13.

      D.      Place coarse sand conforming to material requirements under Section 31 05 13, Article 2.03,
              Paragraph A.
              1. Place first 3 inches of coarse sand bed and thoroughly mix with subgrade soils to a depth
                  of 2 inches.
              2. Place second 3 inches of coarse sand bed and tamp.

      E.      Place open graded stone conforming to material requirements under Section 31 05 13, Article
              2.03, Paragraph B in maximum 8 inch lifts and compact to 85 percent of Maximum Standard
              Proctor Density to meet required depths and elevations.
              1. Do not over-compact.

      F.      Place 4 inch perforated pipe to elevation shown on Drawings.

      G.      Place bioretention amended soil mix in 8 to 12 inch lifts.

      H.      Overfill above required grades to allow for natural settlement.

      I.      Avoid over compaction by allowing time for natural settlement and compaction.
              1. If time does not allow for natural settlement of soil, implement 1 of the 2 following light
                  compaction methods:
                  a. Compact by Soaking:
                       1) Soaking placed soil until water flows from the underdrain.
                       2) Apply water for saturation by spraying or sprinkling.
                       3) Add amended soil mix to compensate for settlement that may occur
                            subsequent to initial wetting.
                  b. Compact by Rolling:
                       1) Roll entire bioretention area using a hand roller weighing no more than 100
                            pounds per foot of width.
                       2) During rolling, fill depressions caused by settlement of rolling with additional
                            amended soil mix.
                       3) Regrade and roll surface to a smooth, even finish to required elevations and
                            sections.

      J.      Remove open graded stone or amended soil contaminated by construction site runoff,
              sediment or other foreign materials at no cost to Owner.

      K.      Uniformly grade areas to a smooth surface, free of irregular surface changes.

      L.      Comply with compaction requirements and grade to required cross sections, lines, and
              elevations.

      M.      Provide a smooth transition between adjacent existing grades and new grades.




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      N.      Finish bioretention surface to required elevations within plus or minus 1 inch.

      O.      After placement of amended soil, protect bioretention areas from construction traffic.
              1. Repair rutting, over-compaction, clogging, or other damage to bioretention areas to
                   required grades and tolerances at no cost to Owner.
                   a. Scarify or remove and replace soil material to depth as directed by the Owner.
                   b. Reshape and recompact.

3.14 FIELD QUALITY CONTROL

      A.      Compaction Testing:
              1. Owner may furnish compaction testing of embankment using the services of an
                 independent testing laboratory.

      B.      Density:
              1. Obtain required compaction not less than 95 percent of Maximum Standard Proctor
                  Density.

      C.      Moisture Range:
              1. Obtain required compaction within a soil moisture content range of optimum to 4 percent
                  above optimum.

      D.      Testing:
              1. Lab Test:
                   a. Determine laboratory density of material in compliance with ASTM D698 (Standard
                       Proctor Density) or ASTM D4253 and D4254 (Maximum and Minimum Index Density
                       for Cohesionless Soils).
                   b. Furnish at least 1 analysis for each material type used as backfill unless furnished
                       by Owner.
              2. Field Test:
                   a. Perform in-place field density and moisture testing in accordance with ASTM D2922
                       and D3017 (nuclear) or ASTM D1556 (sand cone) and D2216 (moisture content).
              3. Frequency:
                   a. Furnish 1 test for each 300 square yards of material placed in each lift with a
                       minimum of 2 tests per lift.
              4. Show compliance with specifications.
              5. Owner will select test locations.
              6. Additional testing may be required by Owner if noncompliance or change in conditions
                   occurs.

      E.      Test Failure:
              1. Rework, recompact, and retest as necessary until specific compaction is achieved in all
                   areas of the embankment.

3.15 TEMPORARY EROSION CONTROL DURING CONSTRUCTION

      A.      Topsoil Erosion:
              1. Minimize topsoil erosion and prevent eroded soil from leaving the construction site.

      B.      National Pollutant Discharge Elimination System (NPDES):
              1. If the project disturbs more than 1 acre, including off-site borrow and disposal areas,
                   comply with the NPDES Permit and use best management practices.




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      C.      Controls:
              1. Prior to site clearing and grading operations, install silt fence along project perimeter of
                  the project on down slope sides of site and excavate temporary siltation basins in existing
                  drainageway as shown on Drawings.
              2. Preserve existing vegetation in areas not needed for construction.
              3. Provide a combination of silt fences or equivalent sediment controls for side slopes and
                  downslope boundaries of disturbed areas.
              4. Provide additional siltation fence, temporary silt basins, diversion dikes, earth dikes,
                  and/or straw bales around storm sewer inlets and outlets.
              5. Provide temporary and/or permanent seeding of areas upon completion of grading as
                  soon as practicable.
              6. If construction activity is not planned to occur in a disturbed area for at least 21 days,
                  stabilize the area by temporary erosion controls within 14 days of ceasing construction
                  activities.
              7. Maintain temporary and permanent erosion control measures in working order, including
                  cleaning, repairing, replacement, and sediment removal throughout the permit period.

      D.      Site Inspections:
              1. Performed by a qualified person from Environmental Health and Safety (EH&S) once
                    every 7 calendar days and within 24 hours after a rainfall of 0.5 inches or more.
              2. A qualified person from EH&S will write reports summarizing site inspections as part of
                    the storm water pollution prevention plan, retain report originals at EH&S, and publish
                    report copies to the Owner’s internet based project communication and management
                    system, Centric Project, in Project Reports > NPDES Reports, under the project
                    Construction tab.

3.16 DUST CONTROL

      A.      Watering:
              1. Sprinkle water on or mist disturbed areas as required to control dust.
              2. Do not over hydrate or cause mud to be tracked from site.

      B.      Covering:
              1. Tarp or cover soil material hauled from or delivered to site.


                                         END OF SECTION 31 20 00




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                                               SECTION 31 22 19

                                               FINISH GRADING

PART 1 GENERAL


1.01 SECTION INCLUDES:
      A. Finish grading.
PART 2 - PRODUCTS
2.01 MATERIALS
      A.      Topsoil salvaged from the stripping operations or new topsoil brought onto the Site shall meet
              the following quality standards:
              1.     Amended per Section 31 05 13 Soils For Earthwork and shown on the plans.
              2.     Fertile, agricultural soil, typical for locality, capable of sustaining vigorous plant growth,
                     taken from drained site.
              3.     Free of subsoil, clay or impurities, plants, weeds and roots. Free of rocks, stones,
                     concrete, or other material grater than 1”. Minimum pH value of 5.4 and maximum 7.0
PART 3 - EXECUTION
3.01 GRADING:
      A.      Grade areas within construction limits to establish new grades indicated and additional areas
              disturbed by construction operations including vehicle use, utility trenching, fill stockpiling,
              and cutting to provide additional backfill material.
      B.      Provide adequate grade stakes to ensure proper grade is established.
              1.    Grade to uniform levels or slopes between points where elevations are indicated.
                    Provide positive drainage.
              2.    Deviations from finish grades indicated shall not exceed 1”.
              3.    If discrepancies are found, contact Owner’s representative immediately.
      C.      Fill areas where settlement occurs to required elevations.
3.02 PLACING TOPSOIL:
      A.      Remove topsoil not meeting quality standards and replace with topsoil acceptable to the
              Owner’s Soils Consultant.
      B.      Do not grade, excavate or work topsoil in frozen or muddy conditions.
      C.      Place 6” of topsoil/ amended planting soil in areas where seeding, sodding, planting will occur
              as indicated. Place material during dry weather.
      D.      Do not place topsoil/ amended planting soil in areas of sewers, water mains and other utilities
              until backfill has settled.
      E.      Fine grade finish surface eliminating rough or low areas. Maintain profiles and contour of
              subgrade.
      F.      Coordinate final grading to minimize damaged by subsequent construction activities.
      G.      Remove roots, weeds, rocks and foreign material while spreading.
      H.      Manually spread topsoil/ amended planting soil close to trees, plants and buildings to prevent
              damage.


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      I.      Leave stockpile area and site clean and raked, ready to receive landscaping.
      J.      Where new topsoil meets existing grade, a clear straight line must define new from old.


                                             END OF SECTION




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                                          SECTION 31 23 00

                           UTILITY TRENCH EXCAVATION & BACKFILL

PART 1 – GENERAL

1.01   SECTION INCLUDES

       A.     Trench excavation and backfill for utility lines, pipe systems, water main and fire
              hydrants.

       B.     Trench bedding and stabilization.

       C.     Boring and jacking pipe.


1.02   DESCRIPTION OF WORK

       A.     Perform all excavations required to complete the work shown in the Plans.

       B.     Prepare trench excavations and shoring for new work, and install the utility lines, system
              components, including bedding and foundation stabilization.

       C.     Complete specified backfill operation.

       D.     Reference is made to the following:

              1.    Iowa Department of Transportation English Standard Specifications for Highway
                    and Bridge Construction and all Supplemental Specifications by the term “Iowa
                    DOT Specification Number” and/or “IM Number”.

1.03   SUBMITTALS

       A.     Results of Standard Proctor and In-Place Density Tests on backfill.

       B.     Upon requests the Contractor will provide Material Certifications to the Engineer.

1.04   DELIVERY, STORAGE AND HANDLING

       A.     Deliver only materials that fully conform to these specifications, or for which submittals
              have been provided to the Owner and approved for use.

       B.     Store delivered materials and excavated materials in locations that will not interfere with
              operations and minimize environmental damage.

       C.     Grade and shape stockpiles for drainage and protect adjacent areas from runoff. Provide
              erosion control around stockpiles.

       D.     Keep stockpiles and excavated materials away from trench.

       E.     Remove unsuitable and excess materials from the site.

1.05   CONFLICTS



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       A.     Conflict Avoidance:

              1.    Expose possible conflicts in advance of construction, such as utility lines and
                    drainage structures. Contractor shall verify elevations and locations of each and
                    verify clearance for proposed construction.
              2.    Complete other elements of the work which can affect line and grade in advance of
                    other open cut construction unless noted on plans.
              3.    Notify the Engineer of conflicts discovered or changes needed to accommodate
                    unknown or changed conditions.

1.06   SPECIAL REQUIREMENTS

       A.     Notify Owner prior to backfilling activities.

       B.     Stop Work: Stop work and notify the Owner immediately if contaminated soils, historical
              artifacts, or other environmental or historic items are encountered.

       C.     Conform to local, state, and federal requirements.

       D.     Abandoned Utilities: Remove and dispose of abandoned utility lines including gas mains,
              water mains, sewer mains, telephone conduits, service lines, etc. required to complete
              the work as shown on plans. All utilities encountered that are abandoned in place shall
              be filled with flowable mortar if possible or capped with a Fernco cap if flowable mortar is
              not possible.

PART 2 – PRODUCTS

2.01        EXCAVATION MATERIALS

       A.     Suitable Excavated Materials For Backfill:

              1.    Soil, clay, silt, sand and gravel with moisture content suitable to achieve required
                    compaction. ASTM D2321, Class II through IVA.
              2.    Fine-grained soils according to ASTM D2321 Class IVB (inorganic) may be used in
                    the final backfill upon approval of the Owner.
              3.    Adjust moisture content of excessively wet, but otherwise acceptable material by
                    spreading, turning, aerating, and otherwise working material as necessary to
                    achieve required moisture range.
              4.    Adjust moisture content of excessively dry, but otherwise acceptable material by
                    adding water, then turning, mixing, and otherwise blending the water uniformly
                    throughout the material until the required moisture range is achieved.

       B.     Unsuitable Material: Unsuitable materials such as trees, stumps, waste construction
              materials, scrap metals, garbage, and other materials not suitable for backfilling or for
              topsoil.

              1.    Individual stones or concrete chunks larger than 6 inches, and averaging more
                    than one per each cubic foot of earth.
              2.    Frozen materials.
              3.    Stumps, logs, branches, and brush.
              4.    Trash or construction waste.
              5.    Earth in clumps or clods larger than 6 inches, and without sufficient fine materials
                    to fill voids during placement.
              6.    Earth, with moisture content outside the acceptable range which cannot be
                    manipulated to obtain the stated moisture range.


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               7.    Class V Material (ASTM D 2321).

       C.      Replacement of Unsuitable Earth Materials:

               1.    If the excavated material is determined by the Owner to be unsuitable and cannot
                     be conditioned so that it becomes suitable, furnish all necessary earth backfill
                     material.
               2.    Remove and dispose of unsuitable material from the site.

2.02        STABILIZATION (FOUNDATION) MATERIALS

       A.      Clean 2½ inch crushed stone.

       B.      The Owner may authorize a change in gradation subject to materials available locally at
               time of construction.

2.03        CLASS I GRANULAR BEDDING MATERIAL (Sewers)

       A.      Granular bedding shall be sharp, clean, crushed stone. 1” crushed stone for pipes
               18”diameter and less, 1-1/2” crushed stone for pipes over 18” diameter.

       B.      Compaction: minimum density of 90% Standard Proctor Density.

2.04        CLASS II BACKFILL MATERIAL

       A.      Class II material is manufactured open graded (clean) or dense graded (clean)
               processed aggregate or coarse - grained natural soils (clean) with little or no fines.

       B.      Class II material is non-plastic soil less than 1.5 inches in size and consists of the
               following

       C.      Compaction: Minimum Density of 90% Standard Proctor in 6” layers.

       D.      Class II material may be specified in the Contract Documents by the Owner between the
               pipe embedment zone and the top 2’ of final backfill when the trench is under the
               pavement.

2.05        CLASS III BACKFILL MATERIAL

       A.      Class III material is natural coarse-grained soils with fines.

       B.      Compaction: Minimum Density of 95% Standard Proctor under pavement and minimum
               density of 90% Standard Proctor not under pavement. Compact in 6” layers.

2.06        CLASS IVA BACKFILL MATERIAL

       A.      Class IVA material is natural fine grained inorganic soils.

       B.      Compaction: Minimum Density of 95% Standard Proctor under pavement and minimum
               density of 90% Standard Proctor not under pavement. Compact in 6” layers.

       C.      Suitable only in dry trench conditions.

2.07        CLASS IVB BACKFILL MATERIAL



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       A.      Class IVB material is natural fine-grained inorganic (high elastic silts and plastic clays –
               fat clay) with a liquid limit greater than 50%.

       B.      Compaction: Minimum Density of 95% Standard Proctor under pavement and minimum
               density of 90% Standard Proctor not under pavement. Compact in 6” layers.

       C.      Upon the approval of the Owner suitable only as final backfill in a dry trench and shall not
               be used in pipe embedment zone.

2.08        CLASS V BACKFILL MATERIAL (Unsuitable Backfill)

       A.      Class V Material is natural highly organic soils with a liquid limit of greater than 50%.

       B.      Use Class V Material only as topsoil in the final top 6” of backfill outside of the pavement.

       C.      Class V Material shall not be used in the pipe embedment zone.

2.09        SPECIAL PIPE EMBEDMENT MATERIAL

       A.      Flowable Mortar:

               1. Flowable mortar to be hand excavatable after 28 day cure.
               2. Compressive strength at 28 days; 40 psi to 80 psi.
               3. Typical mix shall consist of:
                      a.      Cement       50
                      b.      Sand         2500
                      c.      Water        210-275
                      d.      1 Egg of Darafill as manufactured by Grace Construction products or
                              approved equal. (Or equivalent dry packaged Darafill)

2.10   TRENCH EXCAVATING MACHINES

       A.      The equipment used shall be a machine designed for the required purpose. The
               equipment used to excavate shall be capable of excavating the material to the full,
               normal design depth and suitable width.


PART 3 – EXECUTION

3.01        PREPARATION

       A.      Locate, mark, and protect existing utilities and facilities in the work area.

       B.      Provide access to utility service locations, such as valves, manholes and utility poles.

       C.      Notify Owner of operations to occur 24 hours in advance.

       D.      Protect existing facilities and landscaping features, or replace as shown on the plans.

       E.      Protect bench marks, control points and land survey monumentation, or replace at
               Contractor’s expense.

3.02        TRENCH EXCAVATION

       A.      Notify Owner prior to start of excavation activities.


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       B.     If present, remove and stockpile topsoil for subsequent reuse. Store at a location
              approved by the Owner.

       C.     Remove rock, rubbish, boulders, debris, and other unsuitable materials at least 6 inches
              below, and on each side of the pipe. Restore grade using soil suitable for backfill.

       D.     Correct unauthorized excavation at no cost to Owner, using bedding or stabilization
              materials.

       E.     Trench Excavation for Water Mains and Utilities:

              1.      Trench to match detail shown on plans.
              3.      Flat trench bottom, conduit bearing directly on trench bottom (not applicable for
                      rock excavation) for water main pipe only with bell hole shaping.
                      a.       Shape trench bottom to support pipe around ¼ of perimeter for the full
                               length of the pipe barrel.
                      b.       Provide bell holes.
              4.      Install bedding material to support the full length of the pipe barrel.
              5.      The maximum depth of bury will be 20 feet without a designed trench with
                      Engineer’s certification.
              6.      All trench operations shall conform to current OSHA regulations.

       F.     Excavation shall be appropriately fenced as per section 3.8.

3.03        ROCK OR UNSTABLE SOILS IN TRENCH BOTTOM

       A.     Notify Owner prior to over-excavation.

       B.     Owner shall determine the need for trench bottom stabilization prior to installation of
              pipes and structures.

       C.     Remove rock or very hard clay or soft areas of the trench bottom to a depth of one foot
              below the base of the pipe or structure, and backfill with earth or stabilization materials as
              required.

3.04        SHEETING, SHORING AND BRACING

       A.     Provide and install sheeting, shoring and bracing, or trench boxes as necessary to
              facilitate construction. Use of sheeting to be approved by Owner.

       B.     Remove all temporary sheeting.

       C.     Move trench boxes carefully to avoid excavated wall displacement or damage.

3.05        DEWATERING

       A.     Do all work in dry conditions; do not install pipes on excessively wet soil.

       B.     Submit dewatering methods to Owner for review.

       C.     Adequate dewatering is the Contractor’s responsibility.

       D.     Install dewatering system appropriate for the soil conditions.



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       E.      Maintain water levels sufficiently below the bottom of trench excavation to prevent
               upward seepage.

       F.      Provide for handling water encountered during construction:

               1.      Prevent surface water from flowing into excavation. Remove water as it
                       accumulates.
               2.      Do not use sanitary sewers for disposal of trench water.
               3.      Discharges to grade require a silt control plan approved by the Owner.
               4.      Discharge directly to storm sewer is not allowed.

       G.      Backfill pipes prior to stopping dewatering operations.

3.06        PIPE PLACEMENT FOR UTILITY LINES

       A.      Refer to Plans for the installation being made.

       B.      Pipe Bedding if required:

               1.      Shape pipe bed to evenly support pipe at the proper line and grade, with full
                       contact under the bottom of the pipe.
               2.      Install pipe and system components.
               3.      Place bedding simultaneously on both sides of the pipe. Use bedding as
                       specified on detail drawings. Correct any pipe displacements before proceeding.
               4.      Place bedding in lifts not greater than 6 inches thickness and compact to 90%
                       Standard Proctor Density using vibratory compactor.
               5.      Concrete encasement: Install where shown in the Plans.
               6.      If desired, or if required for special conditions, flowable mortar per section
                       02502.2.9 may be used in lieu of other bedding material types with Owners
                       approval.
               7.      Secure pipe against displacement or flotation prior to placing flowable mortar or
                       concrete encasement.

       C.      Haunch Support:

               1.      Refer to Plans for the installation being made.
               2.      Place haunch material in lifts not greater than 6” thickness and compact to
                       minimum 90% Standard Proctor Density using vibratory compactor for granular
                       soils.
               3.      If desired, or if required for special conditions, flowable mortar may be used in
                       lieu of other haunch material types with Owners approval.
               4.      Secure pipe against displacement or flotation prior to placing flowable mortar or
                       concrete encasement.

       D.      Primary and Secondary Backfill (Pipe Cover):

               1.      Refer to Plans for the installation being made.
               2.      Place pipe cover material in 6” lifts and compact to densities required.
               3.      If desired, or if required for special conditions, flowable mortar may be used in
                       lieu of other cover material types with Owners approval.
               4.      Secure pipe against displacement or flotation prior to placing flowable mortar or
                       concrete encasement.

       E.      Final Trench Backfill:



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              1.      Backfill trench immediately after recording locations of connections and
                      appurtenances.
              2.      Allow no more than 100 feet of trench to be open overnight or when work is not
                      in progress except as provided on the Plans.
              3.      Backfill with suitable excavated earth materials:

                      a.      Carefully place backfill over top of pipe and around structures.
                      b.      Compact as required.

              4.      Compaction:

                      a.      Place backfill more than 1 foot below pavement structure in
                              uncompacted lifts not thicker than 12 inches. Compact each lift to at
                              least 90 percent of maximum Standard Proctor Density.
                      b.      Place backfill in remainder of excavation in 6 inch lifts. Compact each lift
                              to at least 95 percent of maximum Standard Proctor Density. Terminate
                              backfill at 6 inches below finish grade in areas to remain unpaved, and to
                              subgrade elevation in areas to be paved.

              5.      Dispose of surplus and unsuitable materials.
              6.      Hydraulic compaction (water saturation and settling) is not allowed.

3.07        FIELD QUALITY CONTROL

       A.     References:

              1.      ASTM C136; Standard Method for Sieve Analysis of Fine and Coarse
                      Aggregates.
              2.      ASTM D698; Standard Test Methods for Moisture-Density Relations of Soils and
                      Soil-Aggregate Moisture Using 5.5 lb. (4.54 kg) Rammer and 12 inch (305 mm)
                      Drop. (Standard Proctor Method)
              3.      ASTM D2922; Test Methods for Density of Soil and Soil-Aggregate in Place by
                      Nuclear Methods (Shallow Depth).
              4.      ASTM D 4253 and D 4254, Test Methods for Maximum Index Density of Soils
                      using a Vibratory Table and Minimum Index Density of Soils and Calculation of
                      Relative Density.

       B.     Compaction Testing: Provide compaction testing of backfill, using the services of an
              independent testing laboratory.

       C.     Moisture Range: Obtain required compaction within a soil moisture range of optimum
              moisture to 4 percentage points above optimum moisture content.

       D.     Schedule Testing: Notify Owner when work is prepared for testing.

       E.     Soil Testing:

              1.      Cohesive soils: Determine moisture-density relationships by ASTM D698
                      (Standard Proctor). Perform at least one test for each type of cohesive soil used.
              2.      Cohesive soils: Determine in-place density using ASTM D1556 (sand-cone
                      method) or ASTM D2922 (nuclear).
              3.      Non-cohesive soils: Determine in-place density using ASTM D4253 and D4254
                      (cohesionless soils).
              4.      Gradation: Test in accordance with ASTM C136.



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       F.     Initial Testing by Contractor: Unless otherwise requested by the Owner, the Contractor
              will complete tests.

3.08        FENCING STANDARDS

       A.     General Fencing

              1.      Fence type shall be based on the matrix in Section C.
              2.      Fencing must enclose all areas of the site such that no area of the construction is
                      accessible to pedestrians or unauthorized personnel or vehicles. Access points
                      must clearly defined and include a means to limit access to the site and prevent
                      inadvertent entry. Fencing must be continuously maintained in a neat and orderly
                      condition.
              3.      Security should be considered in determining the fence type. Where security of
                      site installations is required, fence type A (chain link) should always be used
                      regardless of the duration or level of hazard. Additional adjustments to the
                      standard (fence height, barbed wire top strands, etc.) should be considered as
                      appropriate to the security risk.
              4.      Chain link fencing installed on paved areas shall be supported with jersey
                      barricades that will not require penetration of paved surfaces. Other fence types
                      may be supported weighted drums, post supports, or other method approved by
                      the Owner that will not require penetration of paved surfaces. Traffic cones are
                      not acceptable.
              5.      On chain link fencing, warning signs shall be installed on fencing spaced not
                      more that 50 feet apart with at least one on each side of the site that read
                      “Danger – Construction Area – No Entry – Authorized Personnel Only”. Signs
                      must be professionally prepared and sign material must be suitable to withstand
                      outdoor weather conditions for the duration of construction. Signs must be easily
                      readable from a distance of 20 feet.
              6.      Where fencing is installed across existing walkways or roadways, retro reflective
                      or lighted visual barriers and appropriate “Sidewalk Closed” or “Road Closed”
                      signage shall be provided. All signage for closures of public streets and
                      roadways must comply with the Manual on Uniform Traffic Control Devices for
                      Streets and Highways.
              7.      Where fencing is located adjacent to a roadway or walkway that is to remain in
                      use, fencing shall be set back a minimum of 3 feet where possible to allow for
                      snow removal activities.
              8.      Fencing required for tree protection should comply with details on the drawings.

       B.     Fence Types

              1.      A : Galvanized steel chain link fabric fencing fence with galvanized steel pipe
                      posts. Fence and posts shall be a minimum of 6’ high and be provided with a top
                      rail. Hinged, lockable gates shall be provided to control all access points.
                      B : 4' high wood lath snow fencing. Fence shall be supported with steel or
                      fiberglass "T" posts spaced not more than 10’ apart.
                      C : 4’ high orange plastic net fencing. Fence shall be supported with steel or
                      fiberglass "T" posts spaced not more than 8’ apart.
                      D : 3 strands of yellow nylon rope with steel or fiberglass posts, self supporting
                      standards, or other support method approved by the Owner spaced not more
                      than 8’ apart. Yellow “caution” tape may be utilized in lieu of yellow nylon rope if it
                      is supported with twine or rope as required to prevent damage from wind.

       C.     Fence Type Matrix.

                                       Site Fencing Standards

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                 DURATION       NO GROUND                 GROUND                 GROUND
                 OF WORK        DISTURBANCE -             DISTURBED,             DISTURBED,
                                SUITABLE WALKING          EXCAVATED, OR          EXCAVATED, OR
                                SURFACE                   TRENCHED -             TRENCHED -
                                MAINTAINED AT ALL         DEPTH 0" TO 48"        DEPTH EXCEEDING
                                TIMES.                                           48"
                  Immediate              D                          C                   C
                 Work Areas*
                  <24 hours                C                        C                      C

                  0 - 30 days              B                        B                      B

                   >30 days                B                        B                      A


       * Immediate work areas are areas where work is occurring on a short term basis, work is
       concluded and the area restored before the end of the work day, and the area is continuously
       supervised.

3.09   WASTE MANAGEMENT

       A.     Separate and dispose of waste in accordance with the Project’s Waste Management Plan.


                                               END OF SECTION




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                                                   SECTION 32 12 16

                                                  ASPHALT PAVING


PART 1 - GENERAL

   1.01       SUMMARY

              A.   This section includes hot mix asphalt (HMA) for pavement areas.

   1.02       DESCRIPTION OF WORK

              A.   Includes the requirements for the construction of HMA surface, intermediate, and base
                   courses placed upon a prepared subgrade, subbase, base, or pavement.

              B.   Reference is made to the Iowa Department of Transportation Standard Specifications for
                   Highway and Bridge Construction, Series 2001 all current General Supplemental
                   Specifications and Material Instructional Memorandums by the term "Iowa DOT
                   Specification Number" and/or "IM Number".

              C. Conform to Iowa DOT 2303 for construction of HMA pavement, except as modified herein.
                 1. Provide Quality Management – Asphalt (QM-A) for bid items with HMA quantities
                    exceeding 1,000 tons. Provide quality control for bid items with HMA quantities of
                    1,000 tons or less according to Section 7020, 3.05.
                 2. Refer to Table 1 for gyratory mixture design criteria. Note – this table was copied from
                    the SUDAS Design Standards Section 5D-1.

              D.   The work shall include all labor, equipment, and materials necessary to complete the
                   paving as specified in the contract documents.

              E.   Contractor may use HMA pavement or WMA (Warm Mix Asphalt) pavement. Refer to
                   paragraph 1.03.

              F.   Contractor is encouraged to maximize use of RAP (Recycled Asphalt Pavement), RAS
                   (Recycled Asphalt Shingles) and recycled aggregate to promote environmental
                   sustainability.

   1.03       SUBMITTALS

              A.   HMA & WMA Mix Design: Prepare and submit the Job Mix Formula (JMF) for each mix
                   and each different aggregate source to the Engineer for approval prior to HMA production
                   or a minimum two weeks prior to HMA placement.

              B.   Quality control test results.

              C.   Density Test: Density sample test results no later than the next working day following
                   construction. Calibrated nuclear density testing shall be used unless otherwise approved
                   by the Engineer.

              D.   Thickness Test: Submit all testing and certifications in accordance with Subsection 3.2.

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              E.   Material certifications.

              F.   Cost: Provide total material cost.

              G. Regional and Recycled: Include information on the source and quantity (or proportion) of
                 material in mix design.

   1.04       SUBSTITUTIONS

              A.   Use only materials conforming to these specifications unless permitted otherwise by the
                   Engineer.

              B.   Obtain approval of the Engineer for all substitutions prior to use.

              C.   Salvaged or reclaimed materials as approved by the Engineer; Iowa DOT 2303.




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Table 1: HMA Mixture Design Criteria (derived from Iowa DOT Materials I.M. 510)




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   1.05       DELIVERY, STORAGE, HANDLING AND SALVAGING

              A.   Aggregate Storage: Prevent contamination and intermingling per Iowa DOT 2303.

              B. Disposal: Dispose of excess HMA according to applicable local, state, and federal
                 regulations in a manner that does not cause damage or harm to adjacent properties or
                 public facilities.

   1.06       SCHEDULING AND CONFLICTS

              A.   Construction Sequence:

                   1.   Submit plan for construction sequence and schedule prior to commencing
                        construction.

                   2.   Submit staging plan for asphalt paving operations.

              B.   Conflict Avoidance:

                   1.   Expose possible conflicts in advance of construction, such as utility lines and
                        drainage structures. Verify elevations and locations of each and verify clearance for
                        proposed construction.

                   2.   Complete elements of the work which can affect line and grade in advance of other
                        open cut construction unless noted on plans.

                   3.   Notify the Engineer of conflicts discovered or changes needed to accommodate
                        unknown or changed conditions.

              C.   Stop work and notify the Engineer immediately if contaminated soils, historical artifacts,
                   or other environmental or historic items are encountered.

   1.07       RESTRICTIONS ON OPERATIONS

              A.   Safety Fence for Pavement:

                   1.   Ensure that all traffic control devices are in place in accordance with the Traffic
                        Control Plan.

                   2.   At the end of each day's run and at all side streets, erect and maintain such barriers
                        and fencing as are necessary to protect the pavement from damage.

              B.   Repair of Pavement:

                   1.   Protect the new pavement and its appurtenances from traffic, both public and that
                        caused by its own employees and agents. This includes the erection and
                        maintenance of warning signs, lights, barricades, watchmen to direct traffic, and
                        pavement bridges or crossovers.

                   2.   Any part of the pavement damaged by traffic or other causes occurring prior to final


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                        acceptance of the pavement shall be repaired or replaced at the Contractor's
                        expense, except when the cause of the damage is due to circumstances which are
                        beyond the Contractor's control.

                   3.   Do not operate equipment with metal tracks, metal bucket blades, or metal motor
                        patrol blades directly on new paving. Do not unload soil or granular materials,
                        including base rock for storage and future reloading directly onto new paving.

              G. Utilities Protection:

                   Do not start work until all utilities are located.

                   1.   Repairs: When a utility is disrupted or broken known utilities, repair such utilities at
                        the Contractor's expense. Unnecessary delays in making repairs will cause the
                        Engineer to have such repairs made and the cost thereof deducted from the monies
                        due the Contractor.

                   2.   Drains, Pipe, Tiles: Existing subsurface drains, pipe, and tiles, which are disrupted
                        or broken by reason of the construction shall be connected to the storm sewer, or
                        another adequate outlet if storm sewer is not available. Should no outlet be readily
                        available, the Engineer shall determine a suitable solution.

                   3.   Water Stop Boxes and Services: The adjustment of stems and castings and/or
                        repair of those broken or damaged by the Contractor shall be at the contractor's
                        expense. Relocation of stop boxes and services shall be by bid items.

PART 2 - PRODUCTS

   2.01       MATERIALS
              Per Iowa DOT 2303, with the following exception:

              Follow the procedure outlined in Iowa DOT I.M. 510 for HMA mixture designs, except replace
              Table 1, HMA Mixture Design Criteria with the HMA Mixture Design Criteria (Table 1) in Part 1
              of this specification.

   2.02       EQUIPMENT AND OPERATIONS

              A.   Paving Plant Equipment: Iowa DOT 2001.

              B.   Paving Plant Operations: Iowa DOT 2303.

              C.   Trucks: Iowa DOT 2001.

              D.   Placement Equipment: Iowa DOT 2303.05.

PART 3 - EXECUTION

   3.01       HMA PAVEMENT
              Construct according to Iowa DOT 2303 and the following:


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              A. Tack Coats: Apply tack coats according to Iowa DOT 2303 and the following:

                   1. If the emulsion is diluted, it shall be done by the manufacturer and certified. Provide
                      the Engineer with the new application rate required to achieve the specified undiluted
                      application rate.

                   2. On overlay projects, apply an additional tack coat prior to each lift in the following
                      areas, if required by the Engineer:
                      a. Within 2 feet of the face of curbs, headwalls of culverts, and curbs or handrails of
                          bridges.
                      b. All runouts and fillets, including depressed areas around drainage inlets

              B. Fillets and Runouts: Rake out coarse aggregate prior to shaping and compaction of fillets
                 and runouts.

   3.02       QUALITY CONTROL

              A. Provide quality control as follows:

                   1. Mix Design: Submit for approval.

                   2. Plant Production: Use a current calibration of the HMA production plant for the JMF
                      no more than 12 months old. Maintain an asphalt binder log to track when the binder
                      was delivered. Identify the JMF on the HMA delivery ticket. Use certified asphalt
                      binder and approved aggregate sources meeting the JMF. Monitor the quality control
                      test results and make adjustments to keep the mixture near the target JMF values.

                   3. Construction: Take density measurements of the compacted mixture, except when
                      Class II compaction is specified. Use the field quality control laboratory compaction
                      for field density control as specified in Iowa DOT 2303. The Engineer may accept the
                      density of the compacted layer based on cores or density gauge. The Engineer may
                      waive density measurement provided the compaction has been thorough and
                      effective. Take density measurements of the compacted mixture no later than the
                      next working day following placement and compaction. For small quantities, a lot is
                      the entire quantity of each HMA mixture bid item. The quality index for density will not
                      apply to small quantities.

                   4. Sampling and Testing: Material sampling and testing is for production quality control
                      only. Acceptance of mixture is based on Contractor certification. Perform a minimum
                      of one aggregate cold-feed and one loose HMA test per lot. Sampling and testing of
                      loose HMA is only required for mechanically placed mixture. All sampling and testing
                      procedures will follow the Iowa DOT Specifications and I.M.s using certified
                      technicians and qualified testing equipment. The Engineer may approve alternative
                      sampling procedures. Take the sample between the first 100 to 200 tons of
                      production. No split samples for agency correlation testing are required. Asphalt
                      binder will be accepted based on the asphalt supplier’s shipment certification. No
                      binder sampling or testing is required. No material sampling or testing is required for
                      daily HMA production of less than 100 tons on any project.



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                   5. Certification: Provide a certification for the production of any mixture in which the
                      requirements in this section for small quantities or are applied. Place the test results
                      and certification statement on the Iowa DOT Daily HMA Plant Report (Form 800241).
                       The Daily HMA Plant Report for certified HMA may be submitted at the end of the
                      project for all certified HMA quantities, or submitted at intervals for portions of the
                      certified quantity. Use the following certification statement:

                            “The certified HMA was produced in compliance with the provisions of the project
                            specifications. The certified HMA was produced with certified asphalt binder and
                            approved aggregates as specified in the approved mix design.”

   3.03       DEFECTS OR DEFICIENCIES

              A. Repairs Required:

                   1. Remove and replace, or repair, at no cost to the Owner, new HMA pavement
                      containing cracks, deformities, deficiencies, or other defects related to the
                      Contractor’s material or workmanship. Remedy shall be determined by the Engineer.

                   2. Areas to be replaced will be determined by the Engineer. Complete all repairs
                      according to this section.

              B. Density and Thickness Deficiencies: See Iowa DOT 2303.

                   Check finished pavements with a 10 foot straightedge placed parallel to the center line.
                   Mark areas showing high spots of more than 1/4 of an inch in 10 feet, and grind down with
                   an approved grinding tool to an elevation where the area or spot will not show surface
                   deviations in excess of 1/8 inch when tested with a 10 foot straight edge. The surface
                   corrections will follow the procedures of Iowa DOT 2316. The cost of correcting the
                   smoothness and associated traffic control shall be incidental to the cost of pavement.


                                                  END OF SECTION




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                                                  SECTION 32 13 13

                                                CONCRETE PAVING

PART 1 - GENERAL

    1.01        SECTION INCLUDES:

                A.     Portland Cement Concrete (PCC) Pavement.

                B.     Portland Cement Concrete (PCC) Curbs and Gutters.

                C.     Portland Cement Concrete (PCC) Sidewalk.

    1.02        DESCRIPTION OF WORK

                A.     Includes the requirements for the construction of full depth portland cement
                       concrete (PCC) pavement, and concrete curbs and gutters placed upon a
                       prepared or corrected subgrade or previously constructed base or subbase.
                       This section shall also include final subgrade/subbase preparation for
                       concrete paving.

                B.     Reference is made to the following:

                       1. Iowa Department of Transportation English Standard
                          Specifications for Highway and Bridge Construction, all
                          Supplemental Specifications and Material Instructional
                          Memorandum by the term “Iowa DOT “Specification Number”
                          and/or “IM Number”.

                C.     The work shall include all labor, equipment, and materials necessary to
                       complete the paving as specified in the contract documents.

                D.     The Contractor is encouraged to maximize use of recycled concrete and recycled
                       aggregate to promote environmental sustainability.

    1.03        SUBMITTALS

                A.     PCC Mix Design: Use Class C-4, as defined in Iowa DOT 2301 and IM 529,
                       4,000 psi minimum strength in 28 days. Unless otherwise specified in the
                       contract documents, maturity method for strength determination prior to
                       opening to traffic will be allowed.

                       1. Two weeks prior to commencing any portland concrete placement,
                          the Contractor shall submit a paving mix design for each different
                          source of aggregate to be used for review and approval by the
                          Owner. Mixes or mix designs approved by the Iowa Department of
                          Transportation or an independent testing laboratory shall be
                          submitted.

                B.     Submit all testing and certifications in accordance with Division 1 –
                       Submittals.

                C.     Upon requests the Contractor will provide Material Certifications to the
                       Owner.

                D.     Concrete Compression Tests: Maturity Method test, one test every ½ day of pour.

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                E.     Submit proposed jointing plan for pavement areas.


    1.04        LEED Submittals:

                A.     Cost: Provide material cost of concrete and reinforcing steel.

                B.     Regional and Recycled Content: include information on the source and quantity (or
                       proportion) of each material listed in the mix design.

    1.05        DELIVERY, STORAGE, HANDLING AND SALVAGING

                A.     Aggregate Storage: Prevent contamination and frequent variations in specific
                         gravity, gradation, or moisture content; Iowa DOT 2301.

                B.     Concrete transported without continuous agitation shall not be used if the
                       period elapsed between the time the concrete is mixed and the time it is
                       placed is greater than 30 minutes; Iowa DOT 2301. With the approval of the
                       Owner, an approved retarding admixture may be used at the rate prescribed
                       in Materials IM 403 and the mixed-to-placed time may be extended by an
                       additional 30 minutes.

                C.     Concrete transported with agitation shall not be used when the cement has
                       been in contact with the aggregate more than 1 hour before it is placed; Iowa
                         DOT 2301.

                D.     Concrete containing Type III cement and transported with agitation shall be
                       delivered and placed within the following time limits:



               Concrete Temperature                       Maximum Time
               (at time of mixing, degrees F)             (from mixing to placement, in min.)

               75 or less                                 60

               76 to 85                                   45

               above 85                                   30

                E.     The methods of delivering and handling the concrete shall be such that
                       objectionable segregation or damage to the concrete will not occur, and that which
                       will facilitate placing with a minimum of re-handling; Iowa DOT 2301.

                F.     The compartment in which concrete is transported to the work shall be
                       thoroughly cleaned and flushed with water to ensure that hardened concrete will not
                       accumulate. Flushing water shall be discharged from the compartment before it
                       is charged with the next batch; Iowa DOT 2301.

                G.     Cement and Fly Ash: Store in suitable weatherproof enclosures; Iowa DOT 2301.

                H.     Admixtures: Store in suitable weather tight enclosures which will preserve quality.

                I.     Reinforcing Steel: Store off ground on timbers or other supports.


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    1.06        CONFLICTS

                A.     Conflict Avoidance:

                       1. Expose possible conflicts in advance of construction, such as utility
                          lines and drainage structures. Verify elevations and locations of
                          each and verify clearance for proposed construction.
                       2. Complete elements of the work which can affect line and grade in
                          advance of other open cut construction unless noted on plans.
                       3. Notify the Owner of conflicts discovered or changes needed to accommodate
                          unknown or changed conditions.

                B.    Traffic Control Plan: The Contractor shall develop a traffic control plan based
                      on the    Manual on Uniform Traffic Control Devices (MUTCD). All traffic control
                devices used shall be in accordance with the MUTCD.

                C.     Stop Work: Stop work and notify the Owner immediately if contaminated soils,
                       historical artifacts, or other environmental or historic items are encountered.

                D.     Conform to Local, State and Federal Requirements.

    1.07        RESTRICTIONS ON OPERATIONS

                A.     The following shall apply unless specifically modified by the Owner.

                B.     Daylight Conditions:

                       1. Do not place concrete during rain, snow or inclement weather or
                           temperature prevents good workmanship. The Contractor will
                           take all necessary actions to prevent the pavement from freezing.
                                 a. Concrete placement may commence if the concrete mix
                                      temperature is a minimum of 40 degrees F and the air
                                           temperature is:
                                         1.    After November 15, the air temperature 36 degrees and
                                              rising.
                                         2.    After April 15, the air temperature is 32 degrees and rising.
                                 b. Concrete placement will stop when:
                                         1.   After November 15, the air temperature is 37 degrees and
                                              falling.
                                         2.   After April 15, the air temperature is 32 degrees and falling.
                                         3.   With non-reinforced pavement, calcium chloride may be
                                              added to the mixing water to hasten initial set, if approved by
                                              the Consultant.
                                         4.   Pavement damaged by inclement weather shall be removed
                                              and replaced at Contractor's expense.
                       2. Temperature restrictions and protection requirements may be         modified by the
                           Owner under unusual conditions.
                C.     Night Conditions:

                       1. Do not place or finish concrete under artificial light, unless approved by the
                          Consultant.
                       2. In good weather, the header shall be placed at least 45 minutes before sunset.
                          More time must be allowed for finishing and protection.

                       3. All finishing and covering operations shall be performed prior to darkness.

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                       4. Temperature restrictions and protection requirements may be modified by the
                          Consultant under unusual conditions.

                D.     Cold Weather Temperature Protection:

                       1. All concrete pavement and curb/gutters, including exposed edges of the slab
                          and curb, shall be protected according to the following table.



                      TEMPERATURE FORECAST TYPE OF PROTECTION

                      TEMPERATURE                         TYPE OF PROTECTION

                      35º to 32ºF                         One layer of burlap for concrete. Plastic top layer is
                                                          required if burlap is exposed to rain or heavy winds.

                      31º to 25ºF                         Two layers of burlap or one layer of plastic on one layer of
                                                          burlap.

                      Below 25ºF                          Four layers of burlap between layers of four mil plastic or
                                                          equivalent commercial insulating material

                      Use of straw shall not be allowed for temperature protection.


                                    a.   The protection shall remain until the pavement is 5 days old
                                         or a minimum of 24 hours and compressive strength of 500
                                         psi.
                                    b.   Equivalent commercial insulating material approved by the
                                         Owner may be used. This material shall be waterproof,
                                         have a minimum R value of 0.50, and shall maintain the
                                         concrete above 40ºF.
                                    c.   Vertical edges of pavement and back of curbs shall be cured
                                         by the same method used for curing the surface.

                E.     Concrete Evaporation Protection:

                        1. Hot weather condition is defined as any combination of the following
                           conditions that tend to impair the quality of plastic concrete by
                           accelerating the rate of moisture loss and rate of cement hydration
                           causing thermal shrinkage and resulting in plastic shrinkage
                           cracking or crazing.

                            •    High Ambient Temperature                  •   High Wind Velocity
                            •    High Concrete Temperature                 •   Solar Radiation
                            •    Low Relative Humidity

                        2. Concrete evaporation protection will be based on the theoretical
                           rate of surface evaporation when it exceeds 0.1 lbs. per square foot
                           per hour. The National Weather Service’s maximum air
                           temperature, relative humidity and maximum steady wind velocity
                           without gusts, for the date and the location of the paving pour shall
                           be used for the Theoretical Rate of Evaporation Chart.

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                       3. During hot weather conditions the Owner may restrict concrete
                          placement during early morning or evening hours.
                       4. Under hot weather conditions the Contractor will advise the
                          Owner of the results of the theoretical evaporation rate
                          throughout paving operations.
                       5. The Contractor shall discontinue with placement of the concrete
                          when the theoretical evaporate rate exceeds to 0.30 lbs. /sq. ft. /hr.
                       6. The protection practice by the Contractor will be as follows for the
                          evaporation rate greater then 0.1 lbs. /sq. ft. /hr.
                                a. Immediately apply an approved evaporation retarder
                                    (Polymers) to the concrete pavement and curbs or
                                    increase the application cure to 1.5 times the standard
                                                    specified rate.
                                b. Take special precautions to assure that the forms and
                                    subgrade are sufficiently moist or protected to avoid
                                    lowering the water content at the pavement/subgrade
                                    interface. In hot weather conditions the subgrade should
                                       also be moistened the evening before operations.
                                c. Assure that the time between placing and curing is minimized and
                                    eliminate delays.
                                d. Moisten concrete aggregates that are dry and absorptive.
                                e. Use a fog spray to raise the relative humidity of the ambient air if there
                                    is a delay in g the curing compound.
                                f. Minimize solar heat by shading, wetting or covering concrete chutes or
                                    other equipment that comes in contact with plastic concrete.
                                g. If shrinkage cracks should appear during finishing the cracks can be
                                    closed by striking each side of the crack with a float and refinishing.

                F.     Rain Protection:


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                       1. The Contractor shall have available, near the site of the work,
                          materials for proper protection of the edges and surface of
                          concrete. Protective material may consist of sheets of burlap,
                          paper, or plastic film. Planks or other material with suitable stakes
                          that can be used as temporary forms shall also be on hand; Iowa
                          DOT 2301.
                       2. Failure to properly protect concrete shall constitute cause for
                          removal and replacement of defective pavement, if so determined
                          by the Owner.

                G.     Repair of Pavement:

                        1. The Contractor shall protect the new pavement and its
                           appurtenances from traffic, both public and that caused by its own
                           employees and agents, at its expense. This includes the erection
                           and maintenance of warning signs, lights, barricades and watchmen
                           to direct traffic.
                        2. Any part of the pavement damaged by traffic or other causes
                           occurring prior to final acceptance of the pavement shall be repaired
                           or replaced at the Contractor's expense, except when the cause of
                           the damage is due to circumstances which are beyond the
                           Contractor's control.
                        3. The Contractor shall not operate equipment with metal tracks, metal
                           bucket blades, or metal motor patrol blades directly on new paving.
                           The Contractor shall not unload soil or granular materials, including
                           base rock for storage and future reloading directly onto new paving.

                H.     Utilities Protection:

                        1. The Contractor will not start work until all utilities are located.

                        2. Repairs: When the Contractor disrupts or breaks known utilities of the Owner or
                           privately owned utilities, such utilities shall be repaired at the Contractor's
                           expense. Unnecessary delays in making repairs shall cause the Consultant to
                           have such repairs made and the cost thereof deducted from the monies due the
                           Contractor.
                        3. Drains, Pipe, and Tiles: Existing subsurface drains, pipe, and tiles, which are
                           disrupted or broken by reason of the construction, shall be connected to the
                           storm sewer or another adequate outlet if storm sewer is not available. Should
                           no outlet be readily available, the Owner shall determine a suitable solution
                        4. Water Stop Boxes and Services: The adjustment of stems and castings and/or
                           repair of those broken or damaged by the Contractor shall be at the contractor's
                           expense.

                I.     Use of Pavement: Time for opening pavement for use is determined by age,
                       maturity method or by test results from cylinder or beams taken during
                       placement.



     MINIMUM AGE OR STRENGTH OF PAVEMENT BEFORE OPENING
                         Minimum Age                                                    (1) Minimum Flexural
     Class of   Type of  For Opening     Minimum Compressive                            Strength 3rd Point
     Concrete   Cement   without Testing Strength (psi)                                 (psi)

     C              Type I      7 Days             3,000                      500
     (1) Option test method for compressive strength.
     Note: Maturity Method may be allowed with approval of the Consultant; IM 383

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PART 2 - PRODUCTS

     2.01       TYPE OF PAVEMENT

                A.     Concrete pavement shall be one of two types, standard or slip form.

                B.     Standard Concrete Pavement: Standard concrete pavement is non-reinforced, and
                       shall consist of Class 'C-4' concrete placed within forms, and consolidated and
                       finished by equipment operating on forms.

                C.     Slip Form Pavement: Slip form pavement is non-reinforced, and shall consist
                       of Class 'C-4' concrete placed, consolidated, and finished without the use of fixed
                       forms.

     2.02       MATERIALS

                A.     Portland Cement; Iowa DOT 4101 and IM 401

                       1. Portland cement shall meet the requirements of AASHTO M85
                          specifications for the type of cement required. Cement which
                          contains 5.0 percent or more of lumps retained on a No. 20 sieve
                          shall be rejected.
                                 a. Cement which contains less than 1.0 percent of lumps may
                                     be used without adjustment in 1.0 percent or fraction
                                     thereof from 1.0 to 5.0 percent of lumps found by test,
                                     batch weights of cement used in either concrete pavement
                                     shall be increased by 2.0 percent of the original value.
                                 b. Cement stored at the site of the work or local warehouses
                                     for more than 60 days, or cement stored in producer's silo
                                     more than a year shall be retested for lumps before using.
                       2. Type I: Normal Portland Cement:
                                 a. Unless otherwise specified, cement shall meet Type I
                                     AASHTO M85, Type I.
                                 b. When the addition of fly ash to Type I cement is allowed in
                                     accordance with Iowa DOT 2301, or AASHTO M240, Type I
                                     (PM) or Type IP, cement may be furnished and used within
                                     the same limitations.
                                 c. The cement content of the concrete shall be that specified
                                     for Type I cement.
                       3. A single brand of cement shall be used in all exposed concrete.

                B.     Fly Ash Substitute:

                        1. The use of fly ash may be substituted for portland cement in a
                           portland cement concrete mixture if approved by the Owner and
                           shall conform to the requirements of Iowa DOT 2301, 4108, IM 529,
                           and IM 491.
                        2. Fly ash to be substituted for Portland cement in concrete shall
                           comply with AASHTO M 295, either Class F or Class C, including
                           the Supplementary Optional Chemical Requirements. Sources with
                           fly ash between 1.5 percent and 2.5 percent available alkalis’ may
                           be approved. For Class C fly ash, the pozzolanic activity test with
                           lime will not be required.


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                        3. Approval of the source of fly ash will be required. This is to be
                           based on fly ash produced when the power plant is using specific
                           materials, equipment, and processes. Any change in materials,
                           equipment, and processes shall void the source approval, and a
                           new approval of the source will be required.
                        4. Inspection and acceptance of fly ash will be in accordance with Iowa DOT
                           Materials I.M. 491.17.

                C.     Fine Aggregate, Iowa DOT 4110: Clean, hard, durable mineral aggregate
                       particles free from detrimental amount of silt, shale, coal, organic matters, or iron
                and    other staining elements.

                        1. Natural sand as a result from disintegration of rock through
                           erosion processes.
                        2. From an approved source of not more than 2.0 percent shale and
                           coal particles retained on a No. 16 sieve; not more than 2.5 percent
                           silt by weight.
                        3. Gradation: Iowa DOT 4109, gradation No. 1.

                        Sieve Size                         Percent Passing

                        3/8 inch                           100

                        No. 4                              90 to 100

                        No. 8                              70 to 100

                        No. 30                             10 to 60

                        No. 200                          0 to 1.5
                        Consultant may adjust gradation to allow for use of local
                        aggregates.



                D.     Coarse Aggregate, Iowa DOT 4115: Coarse aggregate shall consist
                       of crushed stone particles.

                        1. Abrasion loss, in accordance with AASHTO T96 shall not exceed
                           50.
                        2. Freeze and thaw loss, in accordance with Iowa DOT Test Method
                           211, Method A, shall not exceed 6 percent.
                        3. Objectionable Materials: The percentage of such materials shall not
                           exceed the following percentages:

                     Objectionable Materials                                               Percent
                     Clay lumps                                                            0.5
                     Coal and carbonaceous shale                                           0.5
                     Total of all shale, similar objectionable materials, and coal
                     combined.                                                              1.0

                     Sticks (wet weight) and other organic materials, except coal.          0.1
                     Unsound chert particles retained on 3/8" sieve (Nonstructural
                     concrete)                                                              3.0
                     Unsound chert particles retained on the No. 4 sieve (Gradation
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                     No. 6) (½" nominal maximum size)                                     0.5
                     NOTE: Chert particles which break into three or more pieces when subjected to
                     the freezing and thawing test will be considered unsound.
                     Chert in aggregate produced from limestone sources is defined as unsound when
                     any of the fractions of the crushed or uncrushed chert do not meet the soundness
                     requirements.


                                    a.   Aggregate shall not contain iron or other staining elements,
                                         as per ISU Part 3, Division 3.

                       4. Durability: Soundness - Iowa DOT Test Method 408-A.
                               a. Class 2 durability for local and minor collectors; some stone
                                     deterioration within 20 years.
                               b. Class 3 durability for major collectors and arterials; little to no stone
                                     deterioration within 20 years.
                               c. Class 2 durability stone shall be used unless stated
                                     otherwise in the contract documents or otherwise specified
                                     by the Consultant.

5.   Gradation: Iowa DOT 4109, Gradation No. 3.



                           Sieve Size                       Percent Passing

                           1 ½ inch                         100

                           1 inch                           95 to 100

                           ½ inch                           25 to 60

                           No. 4                            0 to 10

                           No. 8                            0 to 5

                           No. 200                       0 to 1.5
                           Consultant may adjust gradation to allow for use of local
                           aggregates.

                E.     Water Requirements: Iowa DOT 4102.

                       1. Free from detrimental amounts of oil, salts, acids, strong alkalis,
                          vegetable matter, or other materials detrimental to concrete;
                          AASHTO T26. If practicable, potable water shall be used.
                       2. Suspended matter in excess of 2000 ppm shall be filtered or otherwise clarified.
                       3. Phenolphthalein alkalinity, not more than one-half the methyl orange alkalinity, as
                                calcium carbonate.
                       4. Total acidity, not more than 100 ppm as calcium carbonate.

                F.     Air Entrainment Admixture: Iowa DOT 4103, IM 403, AASHTO M 154.
                       Provisions shall be made to stir, agitate or circulate air entraining admixtures prior to
                       use so as to insure a uniform and homogeneous mixture.


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                G.     Admixtures: All liquid admixtures as listed below must meet the following
                       requirements. Other admixtures may be used subject to the approval of the Owner.

                        1. Retarding and Water Reducing Admixtures: Iowa DOT 4103, IM
                           403, AASHTO M194.
                                 a. The retarding and water reducing admixture used shall be
                                      compatible with the air entraining agent used.
                                 b. The admixtures shall be used in amounts recommended by
                                      the manufacturer for conditions which prevail on the project.
                                 c. When used, they shall be introduced into the mixer after all
                                      other ingredients are in the mixer.
                                      Retarding and water reducing admixtures shall be agitated prior to and
                                      during their use.
                                 e. When fly ash is used in the concrete, the liquid admixture
                                      dosage shall be applied to both the cement and fly ash
                                      weight combined.
                        2. The use of calcium chloride or other salts as anti-freeze or
                                 accelerated set additives is prohibited, as per ISU Part 3,
                                 Division 3.

                H.     Reinforcing Steel:

                        1. Deformed Bars: Billet steel bar, Iowa DOT 4151.
                               a.    All deformed bars shall be epoxy coated, Iowa DOT 4151.
                               b.     Tie bars shall be bent back reasonably straight. Tie bars
                                      broken during re-bending shall be replaced by the Contractor at no
                                      cost by drilling a hole and setting the bar in epoxy. Tie bars shall meet
                                           the requirements of ASTM A 615 Grade 40 or 60.
                               c.     All damage to epoxy coated bars shall be repaired by an
                                      approved patching material.
                        2. Plain Bars, carbon steel, ASTM A306, Grade 40. Epoxy coated
                           complying Iowa DOT 4151.
                        3. Smooth Dowel Bars, carbon steel, ASTM A615, grade 40 fabricated
                           from plain bars cut without deformation of ends; Iowa DOT 4151.
                               a.     Epoxy coated complying Iowa DOT 4151.
                               b.     Dowels, with exception of end of run and header joints,
                                      shall be furnished in approved assemblies.
                               c.     Sawed ends of dowels shall be free of burrs and
                                      projections. Sawed ends need not be coated.
                               d.     Assemblies dipped in MC-70, RC-70, RC-250, CRS-1,
                                      CRS-2, CSS-1H, HFMS-2, HFMS-2H, or HFMS-2S prior to
                                      delivery to work site.
                        4. Welded Wire Fabric, Iowa DOT 4151, ASTM A 185.
                               a.     Epoxy coated complying Iowa DOT 4151.
                               b.     Used as conventional reinforcement shall be of the size and
                                      spacing shown in the contract documents.

                I.     Expansion Tubes: Iowa DOT 4191; Fabricated steel or plastic tubes closed
                       on one end; tubes to be with internal diameter 1/16 inch larger than dowel
                       bar; bar stop capable of withstanding twenty pounds push, minimum. The
                       stop shall be located at least 2 3/4 inches from the open end of the tube.
                       That part of the tube between the stop and the closed end shall be not less
                       than the width of the expansion joint.



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                 J.    Metal Keyways: Iowa DOT 4191; Fabricated 24 gage sheet steel; provide
                       lengths in multiples of tie bar spacing; punch at the centerline to receive tie
                       bars; support metal keyway with legs unless installed by paving machine.
                       Keyways formed on the grade during the paving operation may be of coated
                       or uncoated sheets of 26 gage iron or steel.

                K.     Supports for Reinforcing Steel: Iowa DOT 2301.

                        1. Support tie bars as required to place and maintain correct location
                           during construction.
                        2. Support dowel bars at expansion and contraction joints.
                        3. Epoxy Coated Reinforcement: Support with epoxy coated or plastic
                           chairs; tie with plastic coated tie wires.

                L.     Joint Fillers and Sealers:

                        1. Contraction Joint Sealers: Material for sealing sawed contraction
                                  and center line joints and other joints, as shown in the contract
                                  documents, shall meet the following requirements:
                        2. Poured Joint Sealer: Iowa DOT 4136 and IM 436. Hot poured joint
                           sealer shall be composed of petropolymers and be supplied in solid
                           form. Cold applied sealer shall meet the physical requirements of
                           Iowa DOT 4136.02A. The sealer shall meet requirements of ASTM
                           D 3405 with the following modifications:
                               a.      Penetration of 90 - 150 at 77 degrees F (25 degrees C).
                               b.      Bond at -20 degrees F (-29 degrees C) standard specimen, 3 cycles,
                                       200% extension, Passes.
                               c.      Cold applied joint sealers meeting the above physical requirements
                                       may be used with the approval of the Owner.
                        3. Expansion Joint Sealers: Poured Joint Sealer: Sonolastic NP1 or NP2 sealant,
                           color: Aluminum Gray.

                M.     Joint-Sealant Backer Materials:

                       1. Backer Rod: Closed Cell Backer-Rod or Sonolastic Soft Backer-Rod
                               a. Backer rod shall be of a size that compression is required for
                                    installation in the joint, so that it maintains its position during the
                                    sealing operation.
                               b. Backer rod shall be dry.
                               c. Standard Backer-Rod shall be 3mm larger in diameter than the joint
                                    width.
                               d. Soft Backer-Rod shall be 25% larger in diameter than the joint width.

                       3. Backer Rod: Iowa DOT 4136, AIM 436. Backer rod used in conjunction with joint
                          sealers shall be cellulose or plastic foam.
                              a.     When used with hot poured sealers, the rod must withstand, without
                                     damage, the high temperatures inherent to the sealers.
                              b.     Backer rod shall have a maximum of 5 percent absorption when
                                     immersed in water for 24 hours with the ends sealed.
                              c.     Backer rod shall be of a size that compression is required for
                                     installation in the joint, so that it maintains its position during the
                                     sealing operation.
                              d.     Backer rod shall be dry.




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                N.     Preformed Expansion Joint Filler and Sealer: Preformed material for filling
                       expansion joints shall be one of the following types. When the type is not
                       specified, resilient filler shall be used.

                        1. Resilient Filler: Iowa DOT 4136, AASHTO M 213. Resilient filler shall be
                           furnished in strips of dimensions shown in the contract documents.
                               a.      When the self-expanding type is specifically required, the material
                                       shall meet requirements of AASHTO M 153, Type III.
                               b.      Sealer used with these fillers shall meet requirements of Iowa DOT
                                       4136 or shall be two component, synthetic polymer type meeting
                                       requirements of ASTM D 1850.

                       2. Polyethylene Joint Filler: Iowa DOT 4136, AASHTO T42.
                               a.     Polyethylene joint filler shall be resistant to petroleum derivatives and
                                      comply with the following requirements:
                                                      Compression:              45 p.s.i. maximum
                                                      Recovery:                 90% minimum
                                                      Extrusion:                0.25 inches maximum
                               b.     Sealer used with this filler shall be a two component, synthetic
                                      polymer type meeting requirements of ASTM D1850.
                       3. Elastomeric Joint Seals: Iowa DOT 4136, AASHTO M220.
                               a.     Elastomeric joint seals shall be of the size and shape designated in
                                      the contract documents.
                               b.     Seals with splices shall be acceptable only when splices are made
                                      using factory type methods. A splice shall not occur within one foot of
                                      a sharp bend, when placed in final position, and no piece shall have
                                      more than one splice.
                       4. Preformed Urethane Foam Expansion Joint Filler: Iowa DOT 4136, IM 436.
                               a.     Preformed urethane foam expansion joint filler shall be made with a
                                      semi-open cell, flexible polyurethane foam which is molded to such
                                      cross sectional shape that it can be easily installed in a 3¼ inch to 4¼
                                      inch wide pavement joint with parallel sides and shall be sufficiently
                                      self locking to prevent the material from floating out of the joint.
                               b.     The joint filler may be produced in any convenient lengths in excess
                                      of 4 feet and shall have the following cross sectional dimensions:
                                            Top Width         4½ inches plus or minus 1/8 inch
                                            Overall depth 7-3/4 inches plus or minus ½ inch
                               c.     A lubricating adhesive, recommended by the manufacturer for the
                                      intended use, shall be provided with the joint filler.
                               d.     The properties of the urethane foam when determined on skin free
                                      specimens shall meet the following requirements:
                                            1.        Density: 6.5 to 10.0 lb. per cu. ft.
                                            2.        Compressive load, 50% deflection: 20.0 psi, max.
                                            3.        Recovery: 95% min.
                                            4.        Water absorption: 35% by volume, max.
                                            5.        Chemical Resistance: the material shall be resistant to
                                                      petroleum solvents and linseed oil.
                O.     Liquid Curing Compounds: Iowa DOT 4105, AASHTO M148.

                        1. Compounds shall be of such consistency that they can be readily
                           applied by spraying to a uniform coating at a material temperature
                           above 40 degrees F.
                        2. Moisture Retention shall meet this requirement of Iowa DOT
                           Material Laboratory Test Method 901.
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                     3. Liquid curing compounds shall dry to the touch in not more than 4
                        hours. After 12 hours, the compounds shall not track off the
                        concrete when walked upon.
                     4. White Pigmented Compounds. Iowa DOT 4105.
                            a.       Shall consist of finely ground, white pigment and vehicle,
                                     ready mixed for use without alteration.
                            b.       The pigment shall not settle excessively or cake in the
                                     container.
                            c.       After the compound sprayed on a test slab has dried, it
                                     shall have an apparent daylight reflectance not less than
                                     60 percent relative to magnesium oxide.
                            d.       The compound shall be agitated just prior to being
                                     removed from the container and continuously during
                                         application.
                     5. Dark colored compounds shall consist of asphalt emulsion or
                        asphalt cut back with a volatile solvent and shall contain not less
                        than 50.0 percent asphalt.

               P.    Burlap Covering: Iowa DOT 4104

                     1. Jute and manilla fibers shall weigh not less than 10 ounces per square yard.
                     2. Shall be new material or reclaimed material which shall not have deleterious
                        affect upon fresh concrete.

               Q.    Epoxy Bonding Compound: Iowa DOT 2301 and IM 491.

                     1. Epoxy bonding compound (polymer grouts) shall meet the requirements of Iowa
                        DOT 2301 and IM 491 for each particular application.
                     2. The material shall be an approved brand as listed in IM 491.

    2.03      MIXES: IOWA DOT IM 529

              A.     Mix Design: Unless otherwise specified, the mix design shall be Class C-4
                     mix with air entraining. If a different mix is specified in the contract
                     documents or if the Contractor requests a mix different than C-4, the
                     Contractor shall submit to the Owner the paving mix design for approval two
                     weeks prior to starting paving operations. The submittal shall contain the mix
                     number as described below and admixtures in accordance with 2.03E.
                     Unless otherwise specified, the minimum 28 day compressive strength of the
                     mix shall be 4,000 pounds per square inch.

              B.     Mix Number: Mix numbers designate numerous aspects of the particular mix.
                     The following is an explanation of the various aspects of the mix number.
                     For example: C-4WR-C10.

                        1. The first letter designates the class of concrete as designated in the
                             contract documents.
                        2. The number indicates the relationship of coarse aggregate to fine aggregate. A
                             mix with a 4 is a 50/50 mix. The following chart shows the number within the mix
                                    number and the proportions of the aggregates for each number:
                                         2     is composed of 40% fine and 60% coarse.
                                         3     is composed of 45% fine and 55% coarse.
                                         4     is composed of 50% fine and 50% coarse.
                                         5     is composed of 55% fine and 45% coarse.
                                         6     is composed of 60% fine and 40% coarse.
                                         7     is composed of 65% fine and 35% coarse.
                                         8     is composed of 70% fine and 30% coarse.
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                        3. The letters WR indicate water reducer is used in this mixture.
                        4. When a C or an F is shown toward the end of the mix number, fly
                           ash is a part of the mixture and C-fly ash or F-fly ash, respectively,
                           is used. The percentage of fly ash being used in the mixture shall
                           be designated at the end of the mix number.




                B.     Concrete Mixes: Shall meet the following design targets, as per Iowa DOT 2301, IM
                       529. When concrete base (machine or hand finish) is specified, Class A-4 may be
                       used as the mix with approval of the Owner.


 Mix           W/C             W/C            Cement**           Water***       Entrained***     Fine***        Course***
               Basic           Max.           Min.                              Air              Aggregate      Aggregate


 A-4*          0.474           0.532          0.108              0.161          0.060            0.335          0.336

 B-4 **        0.536           0.600          0.093              0.157          0.060            0.345          0.345

 C-4           0.430           0.488          0.118              0.159          0.060            0.331          0.332

 C-4WR         0.430           0.489          0.112              0.151          0.060            0.339          0.338

 M-4           0.328           ----           0.156              0.161          0.060            0.312          0.311

 O-4WR     0.156       -----       0.156                         0.160          0.060            0.312          0.312
 * Concrete Base or temporary pavement only.
 ** Temporary only

                D.     Consistency and Workability: The amount of materials used shall produce a
                       concrete of uniform consistency, workability and a satisfactory surface finish.


          Paving                  Type of             Slump-in                      % Air Content
                               Concrete

                                                          Min.           Max.           Target           Min.       Max.

 Machine Finish                C-4                         ½             2½               7               6             8

 Hand Finish                   C-4                         ½                4             7               6             8

 Curb & Gutter                 C-4                        ----              3            6½              5½         7½

 Base (Machine Finish          A-4                         ½             2½               7               6             8

 Base (Hand Finish)            A-4                         ½                4             7               6             8


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  Patches with CaCl            M-4                        1           3             5             3           7

 Patch w/o CaCl                M-4                        1           3            6½             5           8
As per Iowa DOT 2301, 2511, 2512, 2529, and 2530.




                E.     Use of Fly Ash: The Contractor shall notify the Owner prior to making
                       concrete mixture changes which have been approved. Mix proportions for
                       the various mixes using fly ash are included in the Iowa DOT Materials I.M.
                       529. The fly ash substitution rates shall be as follows:

                                             Fly Ash Substitution Rates
                                                                               Fly Ash Substitution Rate
        Time Period                        Cement Type                         by Weight

        March 16 through                   Type I and Type II                  Not more than 20 percent
        September 14 ***
        March 16 through                   Type IP and Type I(PM)              Not more than 5 percent *
        September 14 ***

        September 15 through               Type I and Type II                  Not more than 15 percent
        October 15
        September 15 through               Type IP and Type I(PM)              None
        October 15

        October 16 thru March 15           Type I, Type II, & Type III         None
        October 16 thru March 15           Type IP and Type I(PM) **           None

        March 16 thru October 15           Type I, Type II, or Type III used   Class C fly ash only at not
                                           in Class M, Class F, or Class       more than 10 percent
                                           FF mixtures
        *   Note:          If the cement manufacturer provides the Owner with satisfactory concrete
                           strength and freeze-thaw durability test results equivalent to concrete with the
                           same Type IP or Type I (PM) cement without fly ash, the substitution rate may
                           be increased to 10 percent.
                           The testing and acceptance criteria shall be in accordance with
                           Materials I.M. 401.
        ** Note:           Proportions of Type IP and Type I(PM) shall be increased 15
                           percent, by weight, during this time period.
        *** Note:          The March 16 through September 14 substitution rate may be used
                           at any time the maturity method for monitoring concrete strength
                           is utilized.


                            Fly ash shall be transported, stored, hauled, and batched in such a manner to
                            keep it dry.

    2.04        MIXING EQUIPMENT

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                A.     Weighing and Proportioning Equipment: Iowa DOT 2001.

                B.     Mixing Equipment: Iowa DOT 2001.

                C.     Material Bins: Iowa DOT 2001.




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    2.05    CONCRETE BATCHING: IOWA DOT 2301

               A.    Plant batching shall be Iowa DOT calibrated and approved. Provide copy of current
                     calibrations and approvals.

               B.    Batch plant operation and batch trucks shall be coordinated with the paving
                     operation in order to ensure a steady supply of materials.

               C.    Batch plant and trucks shall be operated to minimize dust, noise or truck
                     nuisances.

    2.06       CONCRETE MIXING

               A.    Construction or Stationary Mixer: Iowa DOT 2301.

                      1. The concrete shall be uniform in composition and consistency. If
                         this condition is not produced because of the size of the batch, the
                         size of the batch may be reduced or the mixing time increased, or
                         both, until this result is obtained. If non-uniform, concrete
                         producers shall take corrective action.
                      2. Concrete transported without continuous agitation shall not be used if the period
                         elapsed between the time the concrete is mixed and the time it is placed is
                         greater than 30 minutes. The mixed-to-placed time period may be extended an
                         additional 30 minutes with the use of a retarding admixture, upon approval of the
                         Owner.
                      3. Concrete transported with agitation shall not be used when the time
                         between start of mixing and placement is more than 1 hour.
                      4. The methods of delivering and handling the concrete shall be such that
                         objectionable segregation or damage to the concrete will not occur, and that
                         which will facilitate placing with a minimum of handling.
                      5. The compartment in which concrete is transported to the work shall
                         be thoroughly cleaned and flushed with water at such intervals as
                         may be necessary to insure that hardened concrete will not
                         accumulate in the compartment. Flushing water shall be
                         discharged from the compartment before it is charged with the next
                         batch.

               B.    Ready Mixed Concrete: Iowa DOT 2301.

                        1. The concrete shall be uniform in composition and consistency. If
                             non-uniform, concrete producers shall take corrective action.
                        2. Proportioned in a central plant and mixed in a stationary mixer for
                             transportation in trucks without agitation.
                        3. Proportioned at a central plant, and only partially mixed in a
                             stationary mixer for transportation and finish mixing in a transit
                             mixer.
                        4. Proportioned at a central plant, and then mixed in a transit mixer prior to or
                             during transit.
                        5. When necessary to add additional mixing water at the site of placement, the
                             batch shall be mixed at least an additional 30 revolutions of the drum at mixing
                             speed.
                        6. For main portions of the work it must be demonstrated before the work starts that
                             each vehicle in which concrete will be delivered is capable of discharging
                             concrete having a slump not over 2 inches at an overall rate for its entire load of
                             not less than 1.25 cubic yards per minute. The concrete shall be delivered at a
                             rate sufficient to maintain a sustained rate of progress of not less than 100 feet
                             per hour for the width and depth of slab to be placed.
                        7. Concrete transported without continuous agitation shall not be used if the period
                             elapsed between the time the concrete is mixed and the time it is placed is
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                           greater than 30 minutes. The mixed-to- placed time period may be extended an
                           additional 30 minutes with the use of a retarding admixture upon approval of the
                           Consultant.
                       8. Concrete transported with agitation shall not be used when the time between
                           start of mixing and placement is more than 1 hour.          However with the
                           approval of the Consultant, an approved retarding admixture may be used at the
                           rate prescribed in Materials IM 403 and the mixed-to-placed time may be
                           extended by an additional 30 minutes.
                       9. The compartment in which concrete is transported to the work shall
                           be thoroughly cleaned and flushed with water at such intervals as
                           may be necessary to insure that hardened concrete will not
                           accumulate in the:
                                  a. Concrete with Type III cement and transported without
                                       agitation shall be delivered and placed within 30 minutes after mixing.
                                  b. With the approval of the Owner, an approved retarding
                                            admixture may be used at the rate prescribed in Materials IM 403
                       and                  the mixed-to-placed time may be extended by an additional 30
                                            minutes.

                C.     All Methods: Each truck load shall be identified by a plant charge ticket showing
                       plant name, contractor, project data, quantity, class, time batched, and water added
                       at site. Contractor shall submit tickets to the Owner.

    2.07        CONCRETE PLACEMENT EQUIPMENT: IOWA DOT 2301

                A.     Subgrade Finishing Equipment: Use mechanical excavating equipment
                       designed for this purpose, approved by the Owner.

                        1. Form line or path area for slip-form paving machine shall be
                           constructed to final grade by form-line excavating equipment with
                           automatic grade controls.
                        2. Subgrade between forms or between path areas for slip-form
                           machines constructed to final grade with automatically controlled
                                 subgrade excavating machine.

                B.     Side Forms: Steel, minimum thickness: 5 gage, height at least equal to
                       design thickness of pavement with base width at least 6 inches.

                        1. Minimum section length: 10 feet, joint connections designed to
                           permit horizontal and vertical adjustment with locking device to hold
                           abutting sections firmly in alignment.
                        2. Bracing, support, and staking must prevent deflection or movement
                           of forms.

                 C.    Flexible Forms: Use steel or wood flexible forms for curves with radius less
                       than 100 feet.

                        1. Bracing, support, and staking must prevent deflection or movement
                           of forms.
                        2. Forms used to form back of curbs at returns shall have height at
                           least equal to design thickness of pavement and curb height.
                        3. Forms must be free from scale and surface irregularities; coat with
                           release agent (see 3.3.G) prior to concrete placement.

                                   a.      Consolidating and Finishing Equipment: Fixed form or slip form
                                           paving machines specifically designed for placing, striking off,
                                           consolidating, and finishing in single pass to required cross section.

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                        4. Consolidation of concrete by single pass of approved surface, tube,
                           or internal vibrator operated in accordance with manufacturer's
                           recommendations.
                        5. Slip form equipment: Automatic horizontal and vertical controls
                           required; equipment must spread concrete to uniform depth prior to
                           finishing.
                        6. Air screeds and vibrating screeds are approved consolidating and
                           finishing equipment for cul-de-sacs, drives and some intersections.
                           Small runs of pavement up to 250 feet maximum may also require
                           screeds if paving machines are not practical.
                        7. Equipment subject to approval of the Owner.

                                   a.      Hand Finishing Equipment: Contractor shall provide tools including
                                           wood or magnesium floats, wood hand floats, point trowels, edgers,
                                           or other equipment necessary for proper finishing of concrete.

                       8. Provide 2 light straightedges, 10 feet long, with handles not less
                          than 12 feet long for use in detecting irregularities in surface;
                          provide 2 heavy straightedges of similar size for use in correcting
                          surface; provide 2 light straightedges 10 feet long for checking curb
                          and gutter line.
                       9. Provide approved vibrators for consolidating concrete.
                      10. Provide metal or wood screed true to crown.

                F.     Curing Equipment: Use pressure sprayer capable of applying a continuous       uniform
                       film of curing compound.

                G.     Concrete Saws: Power operated concrete saws capable of cutting hardened
                       concrete neatly.

                H.     Joint Sealing Equipment: Equipment capable of heating and installing sealant
                       in joints in accordance with manufacturer's recommendations.

2.08       LEED MATERIAL REQUIREMENTS

                A.     Provide materials extracted from within 500 miles of Ames and materials with
                       recycled content to the greatest reasonable extent.

PART 3 - EXECUTION

    3.01        FINAL SUBGRADE/SUBBASE PREPARATION

                A.     Natural Subgrade:

                        1. Subgrade construction shall meet the requirements of Section 31 20 00
                           “Earth Moving”.
                        2. Should the subgrade be left high or not prepared for final template
                           shape by a previous contractor, the subgrade shall be proof rolled
                           and depressions filled in accordance with Section 31 20 00 “Earth Moving”.
                        3. Trimming:
                               a.    If the subgrade is to be trimmed to the final grade elevation
                                     with an automatically controlled trimming machine, the
                                     prepared subgrade shall be graded to an elevation that will
                                     permit the machine to accomplish the final cut in one
                                     continuous forward pass.



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                                 b.   In irregular or short sections, the subgrade shall be checked
                                      by the most accurate practical method, subject to approval
                                      of the Owner.
                        4. Unless otherwise ordered by the Owner, the subgrade, at time of
                           placing concrete for Concrete Pavement, shall be in a uniformly
                           moist but not muddy condition to a depth of not less than one inch.

                        5. Subgrade Loading:
                              a.    Where concrete trucks must travel on a prepared soil-type
                                    subgrade to unload and, as approved by the Owner,
                                    watering of the subgrade must be limited to just ahead of
                                    the paving machine.
                              b.    Repetitive loading on the subgrade by concrete trucks shall
                                    be minimized by entering side streets.
                              c.    Loads in excess of the legal axle load shall not be allowed
                                    on the completed subgrade.
                              d.    Partially loaded trucks may be required.
                              e.    If subgrade/subbase failure occurs, the repair shall be
                                    coordinated with the Owner.
                        6. Paving Suspended:
                              a.    The paving operation shall be suspended where subgrade
                                    stability has been lost.
                              b.    No concrete shall be placed upon a subgrade which has
                                    become unstable, bears ruts or tire marks of Contractor's
                                    equipment or which is excessively softened by rain until
                                    such subgrade has been reconsolidated and re-planed or
                                    reshaped to correct the objectionable condition.
                              c.    If necessary, scarify to a minimum depth of 6 inches,
                                    aerating, and re-compacting at the Contractor's expense.
                                    Re-compaction shall meet requirements of Section 31 20 00
                                    “Earth Moving.”
                        7. Maintenance of Subgrade:
                              a.    The Contractor is responsible for maintenance of the
                                    completed subgrade during subsequent activities.
                              b.    Before allowing hauling equipment to use the completed
                                    subgrade, the Contractor must be satisfied as to the effect
                                    this hauling equipment may have on the partially completed work.

                B.     Granular Subbase (only if required by Engineer):

                        1. Granular Class A and B subbase construction shall meet the requirements of
                           Section 31 20 00, 2.3 C and Section 31 20 00, 3.8.
                        2. Should the Contractor who constructed the subbase elect to
                           overbuild the subbase, the paving contractor shall trim down to the
                           design elevation and shape to the final template with an automatically controlled
                           trimming machine.
                        3. Excess material shall be salvaged and spread for use on any other
                           approved project location or operation.
                        4. The top 1 inch of the subbase shall be uniformly moist prior to paving.
                        5. Construction traffic may be allowed on granular subbase after being
                           constructed. (See Section 31 20 00, 3.8)

    3.02        SURFACE FIXTURE ADJUSTMENT



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                A.     Adjust manhole frames and other fixtures within area to be paved to conform
                       to finished surface.

                B.     Clean outside of fixture to depth of pavement before concrete placement.

                C.     Box out fixtures for later adjustment where allowed.

    3.03        FORMS SETTING

                A.     Use form line excavating machine to establish subgrade of forms.

                B.     Set base of forms at or below subgrade elevation with top of forms at
                       pavement surface elevation.

                C.     Extra height forms with the Owner’s approval may be used to back up
                       integral curb and paving slab; set base at or below subgrade elevation with
                       top of form at top of curb elevation.

                D.     Secure forms in place to required grade and alignment.

                E.     If voids occur under forms, remove forms and rework subgrade to proper
                       elevation and density; reinstall forms.

                F.     If the soil supporting the form is softened by rain or standing water so that
                       form is inadequately supported, remove forms and rework subgrade to
                       proper elevation and density; reinstall forms.

                G.     Coat forms with release agent before concrete is placed.

                H.     Place forms true to alignment and free of latent concrete.

                I.     Provide for inspection of form work by Owner prior to concrete placement.

    3.04        REINFORCING PLACEMENT

                A.     Reinforcing metal shall be clean, straight, free from distortion and rust, and
                       shall be firmly secured in position as detailed.

                B.     All reinforcing metal shall be placed in proper approved storage to prevent
                       damage; do not distribute along the work site except as needed to avoid
                       delay in paving.

                C.     Place reinforcing steel as shown on the detailed drawings or as specified;
                       support and secure bars by approved chair and wire assemblies; bars to be
                       checked by the Owner upon notification from the Contractor.

                D.     Place steel centered in the pavement reasonably in advance of the paving
                       operations.

                       Joint Steel:

                        1. All joints shall be constructed of the type, dimensions, and at the
                           locations required by the plans or special provisions.
                        2. Tie bars for all longitudinal joints shall be positioned on chairs and
                           secured against movement with metal stakes during placing and
                           finishing concrete.


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                        3. The Contractor shall provide adequate means to ensure that the
                           load transfer devices and tie bars for key type joints are properly
                           secured to maintain correct position and alignment during the
                           placement of concrete.
                        4. Other tie bars shall be placed in such a manner as to ensure that
                           the bars are located in reasonably close conformity with the
                           specifications.
                        5. Care should be taken to prevent disturbance or damage of the joint
                           assembly. Bars must be supported by approved chairs or method
                           approved by the Owner.

                E.     Dowel Holes:

                        1. Holes for both deformed and smooth dowel bars shall be drilled into
                           the face of the existing slab at midpoint.
                        2. Drills used to make holes shall be held in a rigid frame to assure
                           proper horizontal alignment with misalignment not to exceed 1/4
                           inch in the vertical or horizontal plane.
                        3. The equipment used shall be operated so as to prevent damage to
                           the pavement being drilled. The drilling procedure shall be
                           approved by the Owner. The hole shall be blown clean to eliminate
                           all dust.
                        4. Dowels shall be epoxied into place in the existing slab.

                F.     Bar Mats:

                        1. When bar mat assemblies are specified, the reinforcement shall be
                           assembled accordingly and firmly fastened together at all bar
                           intersections.
                        2. Mat assemblies shall be placed, secured, latched and tied for a
                           continuous mat at adjacent ends as detailed on the plans.
                                 Displacement during concrete placement operations shall not be
                                 permitted.
                        3. Mat assemblies shall not be placed without the use of chairs to
                           assure proper positioning; maintain to proper clearances.

               G.      Steel Fabric: When fabric is specified, it shall be placed in sheets at the depth
                       shown on the plans.

    3.05        CONSTRUCTION OF JOINTS

                A.     General:

                        1. Longitudinal and transverse joints shall be constructed of the type,
                           dimensions, and at the locations required, as described by these
                                   specifications, or as detailed by the plans or special provisions.
                        2. Longitudinal joints shall be coincident with or parallel to the
                           pavement center line unless shown otherwise on the plans.
                        3. All transverse joints shall be at right angles to the center line and
                                   shall extend the full width of the pavement unless otherwise
                                   specified.
                        4. All joints shall be perpendicular to the finished grade of the
                           pavement and the alignment across the joint shall not vary from a
                           straight line by more than 1 inch.
                        5. All joint fillers shall be installed as shown in the contract documents.
                        6. The Contractor shall exercise care in placing, consolidating, and
                           finishing the concrete at and about all joints.
                        7. The edges of the pavement at tooled joints shall be rounded, where
                           required, as specified on the standard detailed plates.
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                        8. Wet sawing shall be used when required by the contract documents
                           for dust control.

                B.     Expansion Joint:

                        1. Install expansion joints where shown on plans.
                        2. Prevent movement of or damage to joint assembly when placing
                           concrete; set joint material low enough to clear the finish machine.
                        3. Construct double width expansion joint in curb over expansion joint
                           in pavement. The backside of the joint must be clear of concrete.
                        4. The expansion joint shall be aligned straight and true.
                        5. If joint fillers are assembled in sections, or if joints as a whole are
                           constructed in sections, then no offsets shall be between adjacent
                           units.
                        6. Where more than one section is used in a joint, the sections shall
                           be securely laced or clipped together. Damaged basket assemblies
                           shall not be used.

                C.     Saw Joints:

                        1. Joint locations shall be chalked with a string line before sawing.
                        2. All joints shall be sawed to a depth shown on the Plans.
                        3. In order to prevent shrinkage cracks, sawing shall be commenced
                           promptly after the pavement has obtained sufficient strength to
                           resist tearing of the concrete adjacent to the joint during the process
                           of sawing.
                        4. Pavement pours shall be scheduled to allow transverse joints to be
                           sawn within 24 hours of the concrete being placed.
                        5. Longitudinal joints shall be sawn within 24 hours of the concrete
                           being placed.
                        6. If necessary, the sawing operations shall be carried on both day
                           and night.
                        7. Joints sawed with an early "green" concrete saw shall be washed
                           out prior to sealing. The concrete must be capable of supporting
                                   the sawing operations to allow the use of an early green concrete
                           saw.
                        8. Contraction joints for the 2’ wide curb and gutter shall be placed at
                           12’ intervals to match the adjoining sidewalk joints.

                D.     Construction Joints:

                        1. Longitudinal or transverse construction joints shall be placed
                           between adjacent lanes of concrete and at end-of-day header runs.
                        2. The longitudinal construction joints shall be an approved key type
                           joint with legs unless machine placed.
                        3. Transverse construction joints shall employ load transfer devices
                           (Header) and shall be placed whenever concrete placement is
                           delayed for more than 30 minutes.
                        4. Saw and seal to the dimensions shown for a "B" joint as on plans.

    3.06        CONCRETE PAVEMENT PLACEMENT

                A.     Contractor is responsible to set survey control stakes at 25 foot maximum
                       spacing including high and low points. Additional staking may be required by
                         the Owner.

                B.     The concrete shall be placed, consolidated, and finished to the widths and
                       depths outlined in the plans.

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                C.     Integral curbs shall be poured with the slab in a single paving machine
                       operation. Normal mainline paving will not have construction joints at integral
                       curbs.

                D.     The concrete shall be deposited upon the supported reinforcement keeping
                       segregation to a minimum.

                E.     Concrete shall be deposited to the full depth of the pavement in a single
                       operation.

                F.     Necessary hand spading and spreading shall be done with shovels and not
                       rakes.

                G.     Use paving machine for all uniform width slabs 8 ½ feet or more in width and
                       250 feet or more in length.

               H.      When pavement is constructed in separate lanes, the junction line in straight
                       sections shall not deviate from the true line shown on the plans by more than
                         ½ inch at any point and shall be tooled to the radius shown on the plans. A
                         joint formed with a metal keyway shall be used between separately poured
                         lanes.

                I.     Place concrete to full depth in single operation. Keep a uniform pile of
                       concrete in front of the paving machine, up to a maximum of 6 to 8 inches
                       above the design surface elevation.

                J.     The concrete shall be distributed and spread as soon as placed. A
                       mechanical concrete spreader may be used.

                K.     Concrete Screed:

                        1. The concrete shall then be struck off and screeded by mechanical
                           means.
                        2. The striking off or screeding shall conform to the crown and cross
                           section shown on the plans.
                        3. If, in the operation of subgrade or finishing equipment, it is
                           necessary to operate one or both sets of wheels or tracks on
                           previously placed concrete, the wheels or tracks shall be adjusted
                           so that the bearing on the concrete will be not less than 3 inches
                                   from the edge of the pavement.
                        4. When operating with two wheels on the previously placed concrete
                           and two wheels on the form, the form wheels shall be double
                           flanged.
                        5. All wheels operating on the pavement shall be flangeless and
                           rubber tired. All tracks operating on the pavement shall use rubber,
                           wood, or belting pads.

                 L.    The top of the forms shall be kept clean from accumulations of concrete, and
                           the travel of the finishing machine on the forms shall be maintained true
                       without lift, wobbling, or other variations tending to affect precision of finish.

                 M.    When finishing by hand methods, concrete shall be consolidated by use of
                       vibrating units operating in the concrete. Unless the vibrating apparatus is
                       such that the full width of concrete is consolidated in a single passage, a
                       definite system or pattern shall be used in the operation of the vibrator so the
                       full width of concrete in each linear foot of lane will receive adequate and
                       uniform consolidation. The system and methods of vibrating shall be subject


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                       to approval by the Owner. Vibrating equipment shall, under no
                       circumstances, be used as a tool for moving concrete laterally on the grade.

    3.07        CURB AND GUTTER CONSTRUCTION

                A.     Construct curb and gutter as shown on Plans.

                B.     Use paving machine slip-form for curb; curb mule or similar mechanical
                       equipment providing equivalent results.

                C.     Hand methods shall be allowed for radius, returns, and sections of curb and
                       gutter 50 feet or less in length.

                D.     When depressed curb at driveways and where sidewalk intersects street, use
                       templates to form backs of such curbs.

                E.     Form and construct curb by hand only where barrier or depressed curb is
                       required and where small radii or other special sections preclude use of
                       mechanical equipment.

                F.     Finish curb as rapidly as finishing operations on pavement permit.
                       Maximum distance behind paving machine is 50 feet.

                G.     Remove free water, latency, dust, leaves, or other foreign matter prior to
                       placing concrete for curb.

                H.     Use freshly mixed concrete; do not store concrete in receptacles at side of
                       pavement for use in curb at a later time; do not use concrete requiring
                       re-tempering.

                I.     Vibrate or puddle concrete to secure bond with paving slab and eliminate
                       rock pockets, honey comb and cold joint.

                J.     Secure final finish on curbs by hand method, including 6 foot straightedge or
                       6 foot slipform.

                K.     Edge, protect, and cure curb in same manner as pavement.

                L.     Check surfaces of curb and gutter with 10 foot straightedge; correct
                       variations greater than 1/8 inch; remove and replace curbs having varying
                       cross section.

    3.08        FINISHING

                A.     Grade and Crown: Promptly after concrete has been placed and vibrated,
                       the surface shall be struck off to the true section by the screed. The surface
                       shall be finished true to crown and grade.

                B.     Watering the Surface: The practice of lubricating the pavement surface with
                       wet burlap or by sprinkling water from brushes or from sprinkler containers to
                       afford greater ease in finishing operation shall not be allowed.

                C.     Floats: Finish surface with wood or magnesium floats; finish from both sides
                       simultaneously if pavement is placed to full width with one pass of paving
                       machine.

                D.     Straight Edging:

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Issuance #1

                        1. After the longitudinal floating has been completed and the excess
                           water has been removed, and while the concrete is still plastic, the
                           slab shall be tested for trueness with a channel radius float, or
                           approved equal. ("channel radius float" is manufactured by Owens
                           Industries, Inc.)
                        2. The channel radius float shall be held in successive positions
                           parallel to the road center line in contact with the surface and the
                                  whole area worked from one side of the slab to the other as
                                  necessary.
                        3. Advancement along the pavement shall be in successive stages of
                           not more than one half the length of the channel radius float.
                        4. Any depressions found shall be immediately filled with freshly mixed
                           concrete, struck off, consolidated, and refinished.
                        5. Check surface longitudinally while concrete is still plastic; correct
                                  any surface deviations greater than 1/8 inch in 10 feet. Round
                                  edges of pavement to 1/8 inch radius.

                E.     Surface Treatment:

                        1. Dragged Surface Treatment:
                              a.    Astroturf or burlap shall be dragged longitudinally over the
                                    finished surface to produce a tight, uniform, textured
                                    surface, and the edges shall be rounded in a workmanlike
                                    manner for roadways to be posted 35 MPH or less.
                              b.    When, for any reason, the desired texture normally
                                    obtained by the drag is not secured, the Consultant may
                                    require that the final finish be a broom finish, in lieu of or in
                                    addition to the drag.

                        2. Transverse Groove Treatment:
                               a.    Unless otherwise specified the texture surface of travel
                                     lanes of pavement shall be given a suitable transverse
                                     grooving for roadways to be posted at 40 MPH or more.
                               b.    If transverse grooving is required, surface grooving shall be
                                     done with a mechanical device such as a wire broom or
                                     comb. The broom or comb shall have a single row of spring
                                     steel tines, rectangular in cross section, 1/8 inch to 3/16
                                     inch wide, spaced on 3/4 inch centers of sufficient length,
                                     thickness, and resilience to form grooves to a depth of a
                                     minimum of 1/8 inch to a maximum of approximately 3/16
                                     inch in the plastic concrete.
                                  c. This operation shall be done at such time and in such
                                     manner that the desired surface texture will be achieved
                                     while minimizing displacement of the larger aggregate
                                           particles and before the surface permanently sets.
                                  d. Where abutting pavement is to be placed, the grooving
                                     should extend as close to the edge as possible without
                                     damaging the edge.
                                  e. If abutting pavement is not to be placed, the 6 inch area
                                     nearest the edge or 1 foot from the face of the curb shall
                                     not be grooved.
                                  f. For small or irregular areas or during equipment
                                     breakdown, grooving may be done by hand methods.

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                F.     Edge Finish: Before the concrete has taken its initial set, all edges of the slab shall
                       be carefully finished with an edging tool and the pavement shall be left smooth and
                       true to line and grade.




    3.09        SURFACE CURING

                A.     Apply liquid curing compound in a fine spray to form continuous, uniform film on the
                       horizontal surface and vertical edges of pavement and curbs immediately after
                       bleeding stops.

                        1. Use a white pigment liquid curing compound for concrete not
                           receiving an asphalt overlay.
                        2. Use a dark-colored curing compound for concrete receiving an
                           asphalt overlay.

                 B.    Apply compound with power sprayer; rate of application not less than 0.067
                       gallon per square yard (15 square yards per gallon); do not dilute compound.
                           For concrete receiving an asphalt overlay, the minimum rate for black cure
                           shall be not less than 0.08 gallon per square yards (12.78 square yards per
                           gallon) in accordance with Iowa DOT 4105.

                 C.    Apply to pavement surface after finishing and after surface moisture has
                       disappeared; apply to pavement edges within 30 minutes after forms are
                       removed.

                 D.    Protect concrete pavement during cold weather for at least 5 days or a
                       minimum of 24 hours and compressive strength of 500 psi.

    3.10        JOINT SEALING

                A.     Timing:
                       1. Unless otherwise provided, before any portion of the pavement is
                           opened to the Contractor's forces or to general traffic, expansion
                                 joints and sawn joints shall be sealed.
                       2. The Owner may limit the wheel loads and axle loads of equipment
                           operating on the pavement during this operation, if prior to the age
                           and strength specified in Section 1.6.I. Additional tests to
                           determine the modulus of rupture may be required.

                B.     Cleaning:
                       1. Before sealing, the residue from sawing shall be cleaned from the
                           crack. Water blast cleaning shall be used on all joints narrower
                           than 3/8 inch.
                       2. For joints 3/8 inch wide or wider, sand cleaning shall be used.
                           When the joint surfaces appear dry by visual examination, the upper
                           3/4 inch of each joint face shall be cleaned by sand blast methods,
                           followed by joint cleaning with air blasting. Air compressor shall
                           provide moisture and oil-free compressed air. The angle of
                           approach of the sand blast nozzle to each vertical face of the
                           reservoir shall be approximately 30 degrees and the sand blast
                           nozzle must have a guide which inserts in the joint and assures
                           positive location and directional control of the nozzle.
                        3. Backer Rod: Immediately prior to installation of the backer rod and sealant, the
                           joint shall be cleaned with an air blast. Backer rod will not be required for joints
                           constructed using a shallower depth early, green concrete saw. When a backer

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Issuance #1
                           rod is to be installed, the backer rod shall be of the proper size and type and
                           shall be installed dry, with a suitable tool. For transverse joints, the backer road
                           shall extend to the edge of the pavement.
                        4. Joint Sealer:
                               a.     Joint sealer shall be prepared and installed in the joint and
                                      to the proper level as shown in the contract documents and
                                      as recommended by the manufacturer.
                               b.     Hot-poured sealers shall be heated in a thermostatically
                                      controlled heating kettle; the material shall be heated to the
                                      temperature required for use, but not above that
                                      recommended by the manufacturer. After sealing, excess
                                      sealer shall be removed from the pavement surface.
                               c.     Joint sealer shall be placed only when the pavement and
                                      ambient air temperatures are 40 degrees Fahrenheit or
                                      higher. When near this minimum, additional air blasting or
                                      drying time or both may be necessary to assure a
                                      satisfactory bond to the joint surfaces.
                               d.     When this sealer cannot be properly placed due to late fall
                                      work, the Contractor shall submit a joint construction plan
                                      and sealing details to the Owner for approval before paving
                                      can begin.
                               e.     Joints shall be sealed the same day they are cleaned.
                                      Sealing shall be done only when the joint surfaces appear
                                      dry by visual examination.
                               f.     Where a curb does not exist, the joint opening at the
                                      pavement edges shall be sealed with tape. If surface correction
                                      required the joints may need to be re-cleaned and resealed.

    3.11        FORM REMOVAL

                A.     Timing:
                       1. Forms shall not be removed before the initial set of the concrete
                           has taken place.
                       2. Remove stakes and forms with care to prevent cracking, spalling, or
                           over stressing concrete. If damage does occur, the minimum repair
                           shall be to saw cut full depth and remove a 4 foot long by 2 ½ feet
                           wide area, dowel into adjoining sound concrete and pour back full
                           depth; or as required by the Owner
                       3. Clean forms before resetting.

                B.     Honeycomb Repair:
                       1. Honeycomb areas adjacent to forms shall be filled with mortar
                          composed of 1 part cement and 2 parts fine aggregate by weight.
                       2. If the honeycombing is to the degree and nature that it is
                          considered by the Owner as defective work, it shall be removed and
                          replaced at the expense of the Contractor.
                       3. Curb may not be back-filled until Owner approval.

                 C.    Paving Protection: The area behind the curbs and slab shall be backfilled
                       immediately after the forms are removed and curing is complete. Dams or
                       other protection shall be constructed to insure that no saturation or erosion of
                       the subgrade under or near the pavement shall occur. This may include
                       check dams, pumping, etc.




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    Issuance #1
        3.12    REMOVAL OF PORTLAND CEMENT CONCRETE PAVEMENT – NOT USED


           3.13     TESTING FOR PORTLAND CEMENT CONCRETE (Minimum Frequencies)

                    A.         Testing shall be performed by the Contractor.

                                                              FIELD SAMPLING & TESTING
                                         METHODS OF
MATERIAL OR          TESTS               ACCEPTANCE                           DESIGNATED
CONSTRUCTION         (as per IDOT        OF SAMPLING          FREQUENCY       RESPONSIBLE
ITEM                 Requirements)       AND TESTING          (minimum)       AGENT         REPORT   REMARKS
                     Gradation (1)

Aggregates -         Moisture
Fine                                                                          Supplier /    IDOT
                     Specific                                                 Contractor    Form
                     Gravity

                     Quality             Quality              Prior to use
                                         Certification

                     Gradation (1)

                     Moisture                                                               IDOT
Aggregates -                                                                  Supplier /    Form
Course               Specific                                                 Contractor
                     Gravity

                     Quality             Quality              Prior to use
                                         Certification
                     Quality             Quality              Prior to use
                                         Certification                        Supplier /    IDOT
Portland Cement                                                               Contractor    Form
                     W/C Ratio
Fly Ash              Quality             Quality              Prior to use    Supplier /    Cert.
                                         Certification                        Contractor
Curing               Quality             Quality              Prior to use    Supplier      Cert.
Compound                                 Certification
Joint                Quality             Quality              Prior to use    Supplier      Cert.
Sealer                                   Certification
Steel                Quality             Quality              Prior to use    Supplier      Cert.
Reinforcing                              Certification
                                                              1/200 CY or
                     Air Content         Field Testing        min
                                                              1 per day (2)
                                                              1/200 CY or     Owner
                     Slump               Field Testing        min
                                                              1 per day (2)
                                                                                            Field    Maturity
Plastic              Cylinders 6"        Field Testing        3/50 CY (3)     Contractor    Book     method may be
Concrete             (Paving)                                                                        implemented in
                                                                                                     lieu of cylinders
                                                                                                     May be req. on
                                                                                                     federal, state
                     Thickness           Field Testing        1/200 CY        Owner                  and
                                                                                                     county projects

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    Phase 2 - Small Animal Hospital Renovation and Addition                                 CONCRETE PAVING
Issuance #1

                     (1) Gradation submittal may be required by the Consultant on local projects.
                     (2) Use most restrictive frequency.
                     (3) One cylinder shall be tested at 7 days and one at 28 days as per ISU Part 3,
                         Division 3. The third cylinder is a reserve in the event a second reading is desired at
                         the 28-day test. (ASTM C31).


    3.14        DEFECTS OR DEFICIENCIES

                A.        Pavement containing excessive cracks, fractures, spalls, or other defects shall be
                          removed and replaced or repaired at no cost to the Owner. Remedy to be
                          determined by the Owner. In lieu of the above, an extended warranty may be
                          approved by the Owner.
                B.
    3.15        WASTE MANAGEMENT

                A.        Separate and dispose of waste in accordance with the Project’s Waste
                          Management Plan.


                                                  END OF SECTION




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                                                 SECTION 32 18 13

                                           SYNTHETIC GRASS SYSTEM


PART 1 GENERAL
1.01 SUMMARY


      A.      It shall be the responsibility of the synthetic grass manufacturer to provide all labor, materials,
              equipment, and tools necessary for the complete installation of the synthetic grass product.
1.02 RELATED WORK SPECIFIED ELSEWHERE
      A.      Earthwork; Section 31 00 00.
1.03 SUBMITTALS
      A.      A letter and specification sheet certifying that the products of this section meet or exceed
              specified requirements and do not violate any other manufacturer’s patents.
      B.      Manufacturer’s warranty information.
1.04 QUALITY ASSURANCE

      A.      Installer qualifications: Manufacturer to install product.

      B.      The manufacturer shall certify the installation and warranty compliance.
      C.      Prior to the beginning of installation, the manufacturer shall inspect the sub-base.
              1. The manufacturer will accept the sub-base in writing when the earthwork contractor
                    provides test results for compaction.
1.05 PRODUCT DELIVERY AND STORAGE
      A.      Deliver products to project site in wrapped condition.
      B.      Store products under cover and elevated above grade.
1.06 WARRANTY
      A.      The turf manufacturer shall provide a warranty to the owner that covers defects in materials and
              workmanship of the turf for a period of eight (8) years from the date of substantial completion.
              The manufacturer’s warranty shall include general wear and damage caused from UV
              degradation.
      B.      The turf manufacturer shall provide a warranty to the owner that covers defects in the installation
              workmanship.
      C.      The manufacturer’s warranty shall be limited to repair or replacement of the affected areas, and
              shall include all the necessary materials, labor, transportation cost, etc. to complete said repairs.
      D.      Manufacturer’s written maintenance manual will be required.




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PART 2 PRODUCTS
2.01 MANUFACTURER

      A.      K9Grass Classic as manufactured by ForeverLawn. Contact: Jim Karmie 505-239-8165 or
              approved equal,


PART 3 EXECUTION
3.01 GENERAL
      A.      The installation shall be performed by manufacturer.
3.02 EXAMINATION
      A.      Verify that all sub-base and leveling is complete prior to installation.
PART 4 CLEANING
4.01 CLEANING
      A.      Protect installed turf from subsequent construction operations.
      B.      Do not permit traffic over unprotected synthetic grass surface.
      C.      Contractor shall provide the labor, supplies, and equipment as necessary for final cleaning of
              surfaces and installed items.
      D.      All usable remnants of new material shall become the property of the Owner.
      E.      The contractor shall keep the area clean throughout the project and clear of debris.


                                            END OF SECTION 32 18 13




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                                              SECTION 32 31 19

                               DECORATIVE METAL FENCES AND GATES

PART 1 GENERAL
1.01 WORK INCLUDED
      A.      The contractor shall provide all labor, materials and all necessary items for the installation of
                                 ®
              the Echelon Plus ornamental aluminum fence system defined herein at Iowa State
              University College of Veterinary Medicine.
1.02 RELATED WORK
      A.      Section 31 00 00 Earthwork
      B.      Section 32 13 14 Concrete
1.03 SYSTEM DESCRIPTION
      A.      The manufacturer shall supply a total ornamental aluminum fencing system of the Ameristar
              Echelon Plus® Majestic Puppy design. The system shall include all components (i.e., pickets,
              posts, rails, gates and hardware) required for complete installation.
1.04 QUALITY ASSURANCE
      A.      The contractor shall provide laborers and supervisors who are thoroughly familiar with the
              type of construction involved and the materials specified.
1.05 REFERENCES
      A.      ASTM B117 - Practice for Operating Salt-Spray (Fog) Apparatus.
      B.      ASTM B221 - Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars,
              Rods, Wire, Profiles and Tubes.
      C.      ASTM D523 - Test Method for Specular Gloss.
      D.      ASTM D822 - Practice for Conducting Tests on Paint and Related Coatings and Materials using
              Filtered Open-Flame Carbon-Arc Light and Water Exposure Apparatus.
      E.      ASTM D1654 - Test Method for Evaluation of Painted or Coated Specimens Subjected to
              Corrosive Environments.
      F.      ASTM D2244 - Test Method for Calculation of Color Differences from Instrumentally Measured
              Color Coordinates.
      G.      ASTM D2794 - Test Method for Resistance of Organic Coatings to the Effects of Rapid
              Deformation (Impact).
      H.      ASTM D3359 - Test Method for Measuring Adhesion by Tape Test.
1.06 SUBMITTAL
      A.      The manufacturer's submittal package shall be submitted prior to installation to confirm
              compliance with all requirements for materials specified in this section.

      B.   Shop Drawings: Show locations of fence, each gate, pickets, rails, and posts and details of
           posts, rails, gates, and pickets and gate swing, or other operation, hardware, and accessories.
           Indicate materials, dimensions, sizes, weights, and finishes of components. Include plans,
           elevations, sections, gate swing and other required installation and operational clearances,
           and details of post anchorage and attachment.


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1.07 PRODUCT HANDLING AND STORAGE
       A.     Upon receipt at the job site, all materials shall be checked to ensure that no damages
              occurred during shipping or handling. Materials shall be stored in such a manner to ensure
              proper ventilation and drainage and to protect against damage, weather, vandalism and theft.
PART 2 MATERIALS
2.01 MANUFACTURER
       A.     The ornamental fence system shall conform to Ameristar’s Echelon Plus aluminum
              ornamental fencing, Majestic Puppy 4-rail style manufactured by Ameristar Fence Products,
              Inc. in Tulsa, Oklahoma.


                                  Table 1 – Minimum Sizes for Echelon Plus Posts
Fence Posts                Panel Height
2-1/2” x 2-1/2” x .060”
                           Up to 6’ Height
w/ reinforced web

                                                                    Gate Height
       Gate Leaf
                           Up to & Including 4’             Over 4’ Up to & Including 5’   Over 5’ Up to & Including 6’
                                                                                           4” x 4” x .250” Alum. or
Up to 4’                   2 1/2” x 2-1/2” x .060” Alum.    3” x 3” x .120” Alum.
                                                                                           3” x 3” x 12ga. Steel
                                                            4” x 4” x .250” Alum. or
4’1” to 6’                 3” x 3” x .120” Alum.                                           3” x 3” x 12ga. Steel
                                                            3” x 3” x 12ga. Steel
                           4” x 4” x .250” Alum. or
6’1” to 8’                                                  4” x 4” x 11ga. Steel          4” x 4” x 11ga. Steel
                           3” x 3” x 12ga. Steel



                              Table 2 – Coating Performance Requirements
Quality                   ASTM Test Method           Performance Requirements
Characteristics
Adhesion                  D3359 – Method B                 Adhesion (Retention of Coating) over 90% of test
                                                           area (Tape and knife test).
Corrosion                 B117 & D1654                     Corrosion Resistance over 1000 hours (Scribed per
Resistance                                                 D1654; failure mode is accumulation of 1/8” coating
                                                           loss from scribe or medium #8 blisters).
Impact Resistance         D2794                            Impact Resistance over 60 inch lb. (Forward impact
                                                           using 0.625” ball).
Weathering                D822, D2244, D523 (60˚           Weathering Resistance over 1,000 hours (Failure
Resistance                Method)                          mode is 60% loss of gloss or color variance of more
                                                           than 3 delta-E color units).




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                          Table 3 – Echelon Plus – Post Spacing By Bracket Type
Span                                               8’ Nominal (91-3/4” Rail)
Post Size                 2-1/2”           2-1/2”              3”            2-1/2”            3”
Bracket Type          Echelon Plus              Echelon Plus                      Echelon Plus
                     Line Boulevard                Swivel*                          Flat Mount
                         (ABB3)                    (ABB2)                             (ABB1)
Post Settings
                           95”               *95”            *95-1/2”            95”             95-1/2”
± 1/2” O.C.

Span                6’ Nominal (73-1/16” Rail)
Post Size                 2-1/2”           2-1/2”            3”                 2-1/2”            3”
Bracket Type          Echelon Plus              Echelon Plus                         Echelon Plus
                     Line Boulevard               Swivel*                              Flat Mount
                         (ABB3)                   (ABB2)                                 (ABB1)
Post Settings
                       76-1/4”          *76-1/4”          *76-3/4”           76-1/4”           76-3/4”
± 1/2” O.C.
*Note: When using ABB2 swivel brackets on either or both ends of a panel installation, care must be taken
to ensure the spacing between post and adjoining pickets meets applicable codes. This will require
trimming one or both ends of the panel.


2.02 MATERIAL
      A.      Aluminum material for fence framework (i.e., tubular pickets, rails and posts) shall conform to
              the requirements of ASTM B221. The aluminum extrusions for posts and rails (outer
              channel) shall be Alloy and Temper Designation 6005-T5. The aluminum extrusions for
              pickets and rail inner slide channels shall be Alloy and Temper Designation 6063-T5.
      B.      Pickets shall be 3/4" square x .045" thick. Horizontal rails shall be 1-1/4" x 1-7/16"
              Forerunner™ channel with .055" thick top wall and .075" thick side walls and shall be punched
              to allow picket to pass through the top of the rail. The Forerunner™ rail shall be constructed
              with an internal web insert providing a raceway for the pickets to be retained with a 1/8”
              retaining rod. The number of rails shall vary with the style, height and strength as determined
              by manufacturer. Fence posts and gate posts shall meet the minimum size requirements of
              Table 1.
      C.      Accessories: Aluminum castings shall be used for all post caps, scrolls, finials, and other
              miscellaneous hardware. Hinges and latches shall be fabricated from aluminum, stainless
              steel or composite materials.
2.03 FABRICATION
      A.      Pickets, rails and posts shall be pre-cut to specified lengths. ForeRunner rails shall be pre-
              punched to accept pickets. Grommets shall be inserted into the pre-punched holes in the
              rails and pickets shall be inserted through the grommets so that pre-drilled picket holes align
              with the internal upper raceway of the ForeRunner rails (Note: This can best be accomplished
              by using an alignment template). Retaining rods shall be inserted into each ForeRunner rail
              so that they pass through the pre-drilled holes in each picket, thus completing the panel
              assembly.




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Phase 2 Small Animal Hospital Renovation and Addition             DECORATIVE METAL FENCES AND GATES
Issuance #1




      B.      The manufactured framework shall be subjected to the Ameristar thermal stratification
              coating process (high-temperature, in-line, multi-stage, and multi-layer) including, as a
              minimum, a six-stage pretreatment/wash and an electrostatic spray application of a polyester
              finish. The topcoat shall be a “no-mar” TGIC polyester powder coat finish with a minimum
              thickness of 2 mils (0.0508mm). The color shall be Black. The stratification-coated
              framework shall be capable of meeting the performance requirements for each quality
              characteristic shown in Table 2.
      C.      Finish: All fence components shall be subject to a six-stage pretreatment/wash followed by
              an electrostatic spray application of a "no-mar" TGIC polyester powder coat finish with a
              minimum thickness of 2-4 mils. The color shall be black.
      D.      Completed panels shall be capable of supporting a 200 lb. load (applied at midspan) without
              permanent deformation. Panels without rings shall be biasable to a 12.5% change in grade.
      E.      Swing gates shall be fabricated using 1-1/4" x 1-7/16" Forerunner rail, 1.75” sq. x .125” gate
              ends, and 3/4” sq. x .080 pickets. Gates that exceed 6’ in width will have a 1.75” sq. x .125”
              intermediate upright. All rail and upright intersections shall be joined by welding. All picket and
              rail intersections shall also be joined by welding.
PART 3 EXECUTION
3.01 PREPARATION
      A.      All new installation shall be laid out by the contractor in accordance with the construction
              plans.
3.02 FENCE INSTALLATION
      A.      Fence post shall be spaced according to Table 3, plus or minus ½”. For installations that must
              be raked to follow sloping grades, the post spacing dimension must be measured along the
              grade. Fence panels shall be attached to posts with brackets supplied by the manufacturer.
              Posts shall be set in concrete footers 33” depth recommended (Note: In some cases, local
              restrictions of freezing weather conditions may require a greater depth). The “Earthwork” and
              “Concrete” sections of this specification shall govern material requirements for the concrete
              footer. Posts setting by other methods such as plated posts or grouted core-drilled footers are
              permissible only if shown by engineering analysis to be sufficient in strength for the intended
              application.
3.03 FENCE INSTALLATION MAINTENANCE
      A.      When cutting/drilling rails or posts adhere to the following steps to seal the exposed surfaces;
              1) Remove all metal shavings from cut area. 2) Apply custom finish paint matching fence
              color. Failure to seal exposed surfaces per steps 1 & 2 above will negate warranty.
              Ameristar spray cans or paint pens shall be used to finish exposed surfaces; it is
              recommended that paint pens be used to prevent overspray. Use of non-Ameristar parts or
              components will negate the manufactures’ warranty.
3.04 GATE INSTALLATION
      A.      Gate posts shall be spaced according to the manufacturers’ gate drawings, dependent on
              standard out-to-out gate leaf dimensions and gate hardware selected. Type and quantity of
              gate hinges shall be based on the application; weight, height, and number of gate cycles.
              The manufacturers’ gate drawings shall identify the necessary gate hardware required for the
              application. Gate hardware shall be provided by the manufacture of the gate and shall be
              installed per manufacturer’s recommendations.




Confluence 08089 / College of Veterinary Medicine                                             32 31 19-4
Phase 2 Small Animal Hospital Renovation and Addition                DECORATIVE METAL FENCES AND GATES
Issuance #1




3.05 CLEANING
      A.      The contractor shall clean the jobsite of excess materials; post-hole excavations shall be
              scattered uniformly away from posts.


                                               END SECTION




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Issuance #1




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Phase 2 Small Animal Hospital Renovation and Addition   DECORATIVE METAL FENCES AND GATES
Issuance #1




                                               SECTION 32 92 00

                                             TURF AND GRASSES

PART 1 GENERAL

1.01 SECTION INCLUDES

      A.      Seeding.

      B.      Sodding.

      C.      Erosion-control material(s).

1.02 RELATED SECTIONS

      A.      Section 31 10 00 - Site Clearing.

      B.      Section 31 20 00 Earth Moving

      C.      Section 31 05 13 Soils for Earthwork

      D.      Section 31 22 19 Finish Grading

1.03 DEFINITIONS

      A.      Duff Layer: The surface layer of native topsoil that is composed of mostly decayed leaves,
              twigs, and detritus.

      B.      Finish Grade: Elevation of finished surface of planting soil.

      C.      Manufactured Topsoil: Soil produced off-site by homogeneously blending mineral soils or
              sand with stabilized organic soil amendments to produce topsoil or planting soil.

      D.      Pesticide: A substance or mixture intended for preventing, destroying, repelling, or mitigating
              a pest. This includes insecticides, miticides, herbicides, fungicides, rodenticides, and mollus-
              cicides. It also includes substances or mixtures intended for use as a plant regulator, defoli-
              ant, or desiccant.

      E.      Pests: Living organisms that occur where they are not desired or that cause damage to
              plants, animals, or people. These include insects, mites, grubs, mollusks (snails and slugs),
              rodents (gophers, moles, and mice), unwanted plants (weeds), fungi, bacteria, and viruses.

      F.      Planting Soil: Standardized topsoil; existing, native surface topsoil; existing, in-place surface
              soil; imported topsoil; or a soil mixture best for plant growth. Amend planting soil as identified
              in Section 31 05 13 Soils For Earthwork.

      G.      Subgrade: Surface or elevation of subsoil remaining after excavation is complete, or top sur-
              face of a fill or backfill area before planting soil is placed.

      H.      Subsoil: All soil beneath the topsoil layer of the soil profile, and typified by the lack of organic
              matter and soil organisms.




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      I.      Surface Soil: Soil that is present at the top layer of the existing soil profile at the Project site.
              In undisturbed areas, the surface soil is typically topsoil, but in disturbed areas such as urban
              environments, the surface soil can be subsoil.


1.04 SUBMITTALS

      A.      See Section 01 33 23 – Submittals, for submittal procedures.

      B.      Product Data: For each type of product indicated.
              1. Pesticides and Herbicides: Include product label and manufacturer's application instruc-
                 tions specific to this Project.

      C.      Certification of Grass Seed: From seed vendor for each grass-seed monostand or mixture
              stating the botanical and common name, percentage by weight of each species and variety,
              and percentage of purity, germination, and weed seed. Include the year of production and
              date of packaging.
              1. Certification of each seed mixture for turf grass sod. Include identification of source and
                   name and telephone number of supplier.

      D.      Qualification Data: For qualified landscape Installer.

      E.      Product Certificates: For soil amendments and fertilizers, from manufacturer.

      F.      Material Test Reports: For existing in-place surface soil.

      G.      Maintenance Instructions: Recommended procedures to be established by Owner for main-
              tenance of turf and meadows during a calendar year. Submit before expiration of required
              initial maintenance periods.

1.05 QUALITY ASSURANCE

      A.      Installer Qualifications: A qualified landscape Installer whose work has resulted in successful
              turf and meadow establishment.
              1. Professional Membership: Installer shall be a member in good standing of either the Pro-
                   fessional Landcare Network or the American Nursery and Landscape Association.
              2. Experience: Two years' experience in turf installation in addition to requirements in Divi-
                   sion 01 Section "Quality Requirements."
              3. Installer's Field Supervision: Require Installer to maintain an experienced full-time super-
                   visor on Project site when work is in progress.
              4. Personnel Certifications: Installer's field supervisor shall have certification in one of the
                   following categories from the Professional Landcare Network:
                   a. Certified Landscape Technician.
                   b. Certified Turfgrass Professional, designated CTP.
                   c. Certified Turfgrass Professional of Cool Season Lawns, designated CTP-CSL.
              5. Maintenance Proximity: Not more than two hours' normal travel time from Installer's
                   place of business to Project site.
              6. Pesticide Applicator: State licensed, commercial.

      B.      Soil-Testing Laboratory Qualifications: An independent laboratory or university laboratory,
              recognized by the State Department of Agriculture, with the experience and capability to con-
              duct the testing indicated and that specializes in types of tests to be performed.




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       C.     Soil Analysis: For each unamended soil type, furnish soil analysis and a written report by a
              qualified soil-testing laboratory stating percentages of organic matter; gradation of sand, silt,
              and clay content; cat ion exchange capacity; sodium absorption ratio; deleterious material;
              pH; and mineral and plant-nutrient content of the soil.
              1. Testing methods and written recommendations shall comply with USDA's Handbook
                  No. 60.
              2. The soil-testing laboratory shall oversee soil sampling, with depth, location, and number
                  of samples to be taken per instructions from Architect. A minimum of three representa-
                  tive samples shall be taken from varied locations for each soil to be used or amended for
                  planting purposes.
              3. Report suitability of tested soil for turf growth.
                  a. Based on the test results, state recommendations for soil treatments and soil
                       amendments to be incorporated. State recommendations in weight per 1000 sq. ft.
                       or volume per cu. yd. for nitrogen, phosphorus, and potash nutrients and soil
                       amendments to be added to produce satisfactory planting soil suitable for healthy, vi-
                       able plants.
                  b. Report presence of problem salts, minerals, or heavy metals, including aluminum, ar-
                       senic, barium, cadmium, chromium, cobalt, lead, lithium, and vanadium. If such
                       problem materials are present, provide additional recommendations for corrective ac-
                       tion.

1.06    DELIVERY, STORAGE, AND HANDLING

       A.     Seed and Other Packaged Materials: Deliver packaged materials in original, unopened con-
              tainers showing weight, certified analysis, name and address of manufacturer, and indication
              of conformance with state and federal laws, as applicable.

       B.     Bulk Materials:
              1. Do not dump or store bulk materials near structures, utilities, walkways and pavements,
                  or on existing turf areas or plants.
              2. Provide erosion-control measures to prevent erosion or displacement of bulk materials,
                  discharge of soil-bearing water runoff, and airborne dust reaching adjacent properties,
                  water conveyance systems, or walkways.
              3. Accompany each delivery of bulk fertilizers, lime, and soil amendments with appropriate
                  certificates.

1.07 PROJECT CONDITIONS

       A.     Planting Restrictions: Plant during one of the following periods. Coordinate planting periods
              with initial maintenance periods to provide required maintenance from date of planting com-
              pletion.
              1. Spring Planting: April 15 - May 30.
              2. Fall Planting: August 15 - September 30.

       B.     Weather Limitations: Proceed with planting only when existing and forecasted weather con-
              ditions permit planting to be performed when beneficial and optimum results may be ob-
              tained. Apply products during favorable weather conditions according to manufacturer's writ-
              ten instructions.

1.08 MAINTENANCE SERVICE

       A.     Begin maintenance immediately after each area is seeded and continue until acceptable
              seeding is established, but not for less than two (2) years from date of Substantial Comple-
              tion.



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      B.      To include:
              1. Repair of eroded areas prior to acceptance.
              2. Maintenance of a uniform mulch cover until acceptance.

      C.      Until final acceptance and approval is received, reseed or overseed, using seed mix originally
              specified, all seeded areas to produce uniformity.

      D.      First and second year mowing maintenance - Mowing shall occur at a frequency to prevent
              weeds from setting seed and with a mowing height adjusted to maximize weed control and
              minimize damage to seeded species. For areas not accessible with mowing equipment, ar-
              eas shall be cut to above specified height with a string trimmer or equivalent.

      E.      During the warranty maintenance period, hand weed, cut and/ or use appropriate herbicide
              (by licensed applicator) a sufficient number of times each growing season to keep weeds
              from setting seed and to keep seeded areas looking neat. Herbicide treatment should target
              weedy perennial species on an as needed-basis. Coordinate weed control measures with
              Construction Manager.

1.09 WARRANTY

      A.      Provide guaranteed germination as specified for seed in paragraphs 2.1, 2.2, 2.3 and 2.4 this
              Section.
              1. Warranty period for Seeding: Two years from the date of Substantial Completion.

      B.      Provide seed emergence.

      C.      Reseed and remulch bare spots as specified in this Section for original seeding and mulch-
              ing; maintain these areas as specified until acceptance by Owner.
              1. At the end of the second full growing season, the seeding areas shall be established such
              that a full stand of the representative seeding mix is alive and in a healthy growing condition.

1.10 FINAL INSPECTION AND ACCEPTANCE:

      A.      Conditions for seeding acceptance:
              1. Guaranteed germination is achieved.
              2. Grass plants have emerged.
              3. Scattered bare spots do not exceed one (1) square foot in area.
              4. Scattered bare spots do not exceed three percent (3%) of total lawn areas.

      B.      Upon completion of the work and fulfillment of the requirements of this Section, notify the
              Owner in writing that the work is ready for final inspection.
              1. The final inspection of the seeded areas shall be at the end of the second full growing
                 season.
              2. Before final acceptance shall be issued, the terms of the warranty maintenance period
                 shall be met.
              3. At six-month intervals, from the time of initial acceptance, the Owner, Engineer, and Con-
                 tractor will inspect and evaluate the growth and success of the seeding. If, during these
                 intermediate inspections, it is determined that the seeding is more that 25% dead or in an
                 unhealthy or unsightly condition, the Contractor shall reseed the area immediately, or as
                 soon as is allowed during specified planting periods.

      C.      Request a definite date for final inspection.




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      D.      Notify the Owner five (5) days prior to the requested final inspection date.

      E.      Reseed and maintain all seeded areas which do not meet the requirements of this Section at
              the time of final inspection.

      F.      Replacement work (reseeding, maintenance, etc.) shall be as specified in this Section for
              original seeding.

      G.      Replacement work shall be reinspected before acceptance.

      H.      Furnish detailed written recommended maintenance program to the Owner with a copy to the
              Construction Manager, prior to final inspection of the seeding.

PART 2 PRODUCTS

2.01 SEED

      A.      Grass Seed: Fresh, clean, dry, new-crop seed complying with AOSA's "Journal of Seed
              Technology; Rules for Testing Seeds" for purity and germination tolerances.

      B.      Seed Species: Seed of grass species as follows, with not less than 95 percent germination,
              not less than 85 percent pure seed, and not more than 0.5 percent weed seed:
              1. Fawn Tall Fescue and Linn Perennial Rye.

2.02 FERTILIZERS

      A.      Bonemeal: Commercial, raw or steamed, finely ground; a minimum of 4 percent nitrogen and
              20 percent phosphoric acid.

      B.      Superphosphate: Commercial, phosphate mixture, soluble; a minimum of 20 percent avail-
              able phosphoric acid.

      C.      Commercial Fertilizer: Commercial-grade complete fertilizer of neutral character, consisting
              of fast- and slow-release nitrogen, 50 percent derived from natural organic sources of urea
              formaldehyde, phosphorous, and potassium in the following composition:
              1. Composition: 1 lb/1000 sq. ft. of actual nitrogen, 4 percent phosphorous, and 2 percent
                   potassium, by weight.
              2. Composition: Nitrogen, phosphorous, and potassium in amounts recommended in soil
                   reports from a qualified soil-testing laboratory.

      D.      Slow-Release Fertilizer: Granular or pelleted fertilizer consisting of 50 percent water-
              insoluble nitrogen, phosphorus, and potassium in the following composition:
              1. Composition: 20 percent nitrogen, 10 percent phosphorous, and 10 percent potassium,
                  by weight.
              2. Composition: Nitrogen, phosphorous, and potassium in amounts recommended in soil
                  reports from a qualified soil-testing laboratory.

2.03 PLANTING SOILS

              A. Planting Soil: ASTM D 5268 topsoil, with pH range of 5.5 to 7, a minimum of 6 percent
                 organic material content; free of stones 1 inch or larger in any dimension and other extra-
                 neous materials harmful to plant growth. Soil as identified on plan and Section 31 05 13
                 Soils For Earthwork.




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2.04 MULCHES

      A.      Straw Mulch: Provide air-dry, clean, mildew- and seed-free, salt hay or threshed straw of
              wheat, rye, oats, or barley.

      B.      Sphagnum Peat Mulch: Partially decomposed sphagnum peat moss, finely divided or of
              granular texture, and with a pH range of 3.4 to 4.8.

      C.      Muck Peat Mulch: Partially decomposed moss peat, native peat, or reed-sedge peat, finely
              divided or of granular texture, with a pH range of 6 to 7.5, and having a water-absorbing ca-
              pacity of 1100 to 2000 percent.

      D.      Compost Mulch: Well-composted, stable, and weed-free organic matter, pH range of 5.5 to
              8; moisture content 35 to 55 percent by weight; 100 percent passing through 1-inch sieve;
              soluble salt content of 2 to 5 decisiemens/m; not exceeding 0.5 percent inert contaminants
              and free of substances toxic to plantings; and as follows:
              1. Organic Matter Content: 50 to 60 percent of dry weight.
              2. Feedstock: Agricultural, food, or industrial residuals; biosolids; yard trimmings; or source-
                  separated or compostable mixed solid waste.

      E.      Fiber Mulch: Biodegradable, dyed-wood, cellulose-fiber mulch; nontoxic and free of plant-
              growth or germination inhibitors; with a maximum moisture content of 15 percent and a pH
              range of 4.5 to 6.5.

      F.      Nonasphaltic Tackifier: Colloidal tackifier recommended by fiber-mulch manufacturer for
              slurry application; nontoxic and free of plant-growth or germination inhibitors.

      G.      Asphalt Emulsion: ASTM D 977, Grade SS-1; nontoxic and free of plant-growth or germina-
              tion inhibitors.


2.05 PESTICIDES

      A.      General: Pesticide, registered and approved by EPA, acceptable to authorities having juris-
              diction, and of type recommended by manufacturer for each specific problem and as required
              for Project conditions and application. Do not use restricted pesticides unless authorized in
              writing by authorities having jurisdiction.

      B.      Pre-Emergent Herbicide (Selective and Non-Selective): Effective for controlling the germina-
              tion or growth of weeds within planted areas at the soil level directly below the mulch layer.

      C.      Post-Emergent Herbicide (Selective and Non-Selective): Effective for controlling weed
              growth that has already germinated.

2.06 EROSION-CONTROL MATERIALS

      A.      Erosion-Control Blankets: Biodegradable wood excelsior, straw, or coconut-fiber mat en-
              closed in a photodegradable plastic mesh. Include manufacturer's recommended steel wire
              staples, 6 inches long.

      B.      Erosion-Control Fiber Mesh: Biodegradable burlap or spun-coir mesh, a minimum of 0.92
              lb/sq. yd., with 50 to 65 percent open area. Include manufacturer's recommended steel wire
              staples, 6 inches long.




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PART 3 EXECUTION

3.01 EXAMINATION

      A.      Examine areas to be planted for compliance with requirements and other conditions affecting
              performance.
              1. Verify that no foreign or deleterious material or liquid such as paint, paint washout, con-
                  crete slurry, concrete layers or chunks, cement, plaster, oils, gasoline, diesel fuel, paint
                  thinner, turpentine, tar, roofing compound, or acid has been deposited in soil within a
                  planting area.
              2. Do not mix or place soils and soil amendments in frozen, wet, or muddy conditions.
              3. Suspend soil spreading, grading, and tilling operations during periods of excessive soil
                  moisture until the moisture content reaches acceptable levels to attain the required re-
                  sults.
              4. Uniformly moisten excessively dry soil that is not workable and which is too dusty.

      B.      Proceed with installation only after unsatisfactory conditions have been corrected.

      C.      If contamination by foreign or deleterious material or liquid is present in soil within a planting
              area, remove the soil and contamination as directed by Architect and replace with new plant-
              ing soil.

3.02 PREPARATION

      A.      Protect structures, utilities, sidewalks, pavements, and other facilities, trees, shrubs, and
              plantings from damage caused by planting operations.
              1. Protect adjacent and adjoining areas from hydro seeding and hydro mulching overspray.
              2. Protect grade stakes set by others until directed to remove them.

      B.      Install erosion-control measures to prevent erosion or displacement of soils and discharge of
              soil-bearing water runoff or airborne dust to adjacent properties and walkways.

3.03 TURF AREA PREPARATION

      A.      Limit turf subgrade preparation to areas to be planted.

      B.      Verify area has been constructed in accordance with Section 31 20 00, 3.11.
              1. Apply fertilizer.

      C.      Finish Grading: Grade planting areas to a smooth, uniform surface plane with loose, uni-
              formly fine texture. Grade to within plus or minus 1/2 inch of finish elevation. Roll and rake,
              remove ridges, and fill depressions to meet finish grades. Limit finish grading to areas that
              can be planted in the immediate future.

      D.      Moisten prepared area before planting if soil is dry. Water thoroughly and allow surface to
              dry before planting. Do not create muddy soil.

      E.      Before planting, obtain Architect's acceptance of finish grading; restore planting areas if
              eroded or otherwise disturbed after finish grading.

3.04 PREPARATION FOR EROSION-CONTROL MATERIALS

      A.      Prepare area as specified in "Turf Area Preparation" Article.




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      B.      For erosion-control mats, install planting soil in two lifts, with second lift equal to thickness of
              erosion-control mats. Install erosion-control mat and fasten as recommended by material
              manufacturer.

      C.      Fill cells of erosion-control mat with planting soil and compact before planting.

      D.      For erosion-control blanket or mesh, install from top of slope, working downward, and as rec-
              ommended by material manufacturer for site conditions. Fasten as recommended by mate-
              rial manufacturer.

      E.      Moisten prepared area before planting if surface is dry. Water thoroughly and allow surface
              to dry before planting. Do not create muddy soil.

3.05 SEEDING

      A.      Sow seed with spreader or seeding machine. Do not broadcast or drop seed when wind ve-
              locity exceeds 5 mph. Evenly distribute seed by sowing equal quantities in two directions at
              right angles to each other.
              1. Do not use wet seed or seed that is moldy or otherwise damaged.
              2. Do not seed against existing trees. Limit extent of seed to outside edge of planting sau-
                   cer.

      B.      Sow seed at rates indicated on plans.

      C.      Rake seed lightly into top 1/8 inch of soil, roll lightly, and water with fine spray.

      D.      During seeding, protect bioretention areas from construction traffic and over compaction.
              1. Repair rutting, over-compaction, clogging, or other damage to bioretention areas to re-
                  quired grades and tolerances at no cost to Owner.

      E.      Protect seeded areas with slopes exceeding 1:4 with erosion-control blankets and 1:6 with
              erosion-control fiber mesh installed and stapled according to manufacturer's written instruc-
              tions.

      F.      Protect seeded areas with erosion-control mats where shown on Drawings; install and anchor
              according to manufacturer's written instructions.

      G.      Protect seeded areas with slopes not exceeding 1:6 by spreading straw mulch. Spread uni-
              formly at a minimum rate of 2 tons/acre to form a continuous blanket 1-1/2 inches in loose
              thickness over seeded areas. Spread by hand, blower, or other suitable equipment.
              1. Anchor straw mulch by crimping into soil with suitable mechanical equipment.
              2. Bond straw mulch by spraying with asphalt emulsion at a rate of 10 to 13 gal./1000 sq. ft.
                  Take precautions to prevent damage or staining of structures or other plantings adjacent
                  to mulched areas. Immediately clean damaged or stained areas.

      H.      Protect seeded areas from hot, dry weather or drying winds by applying compost mulch
              within 24 hours after completing seeding operations. Soak areas, scatter mulch uniformly to
              a thickness of 3/16 inch, and roll surface smooth.




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3.06 SATISFACTORY TURF

      A.      Turf installations shall meet the following criteria as determined by Architect:
              1. Satisfactory Seeded Turf: At end of maintenance period, a healthy, uniform, close stand
                  of grass has been established, free of weeds and surface irregularities, with coverage
                  exceeding 90 percent over any 10 sq. ft. and bare spots not exceeding 5 by 5 inches.

      B.       Use specified materials to reestablish turf that does not comply with requirements and con-
               tinue maintenance until turf is satisfactory.


3.07 PESTICIDE APPLICATION

      A.      Apply pesticides and other chemical products and biological control agents in accordance
              with requirements of authorities having jurisdiction and manufacturer's written recommenda-
              tions. Coordinate applications with Owner's operations and others in proximity to the Work.
              Notify Owner before each application is performed.

      B.      Post-Emergent Herbicides (Selective and Non-Selective): Apply only as necessary to treat
              already-germinated weeds and in accordance with manufacturer's written recommendations.

      C.      Protect adjacent plant material not intended to receive pesticides or herbicides

3.08 CLEANUP AND PROTECTION

      A.      Promptly remove soil and debris created by turf work from paved areas. Clean wheels of ve-
              hicles before leaving site to avoid tracking soil onto roads, walks, or other paved areas.

      B.      Erect temporary fencing or barricades and warning signs as required to protect newly planted
              areas from traffic. Maintain fencing and barricades throughout initial maintenance period and
              remove after plantings are established.

      C.      Remove non-degradable erosion-control measures after grass establishment period.


                                        END OF SECTION 32 92 00




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                                               SECTION 32 93 00
                                                     PLANTS
PART 1 GENERAL
1.01 SECTION INCLUDES
       A.     Plant Materials.


1.02 RELATED SECTIONS
       A.     Section 32 92 00 – Turf and Grasses.
       B.     Section 31 20 00 - Earth Moving.
       C.     Section 31 05 13 Soils For Earthwork
       D.     Section 31 22 19 Finish Grading


1.03 DELIVERY, HANDLING AND TEMPORARY STORAGE
       A.     Install plant material on the day of delivery to the site; in the event this is not possible, protect
              that stock not planted.
       B.     Keep plant material that cannot be planted immediately after delivery in the shade, well
              protected with soil, wet moss or other acceptable material and well watered.
       C.     Do not bind plants with wire or rope at any time so as to damage the bark or break branches.
       D.     Deliver fertilizer to site in original, unopened containers, each bearing manufacturer's
              guaranteed analysis.
              Store packaged materials off ground and protect from moisture.


1.04 CODES, PERMITS AND FEES
       A.     Obtain any necessary permits for this Section of Work and pay any fees required for permits.
       B.     The entire installation shall fully comply with all local and state laws and ordinances, and with
              all established codes applicable thereto.


1.05   JOB CONDITIONS
       A.     Existing Utilities:
              1. Locate existing underground utilities in areas of work. If utilities are to remain in place,
                  provide adequate means of support and protection during this work.
              2. Underground utilities shown on the drawings have been taken from existing public
                  records, Owner's records available as-built drawings and are correct to the best of our
                  knowledge, provided for information only.
              3. Should uncharted, or incorrectly charted, piping or other utilities be encountered during
                  excavation, consult Utility Owner immediately for directions. Cooperate with Owner
                  and utility companies in keeping respective services and facilities in operation. Repair
                  damaged utilities caused by Contractor's negligence to the satisfaction of Utility Owner at
                  no cost to the Project Owner.




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              4. Do not interrupt existing utilities serving facilities occupied and used by Owner or others,
                 during occupied hours, except when permitted in writing by Landscape Architect and
                 then only after acceptable temporary utility services have been provided.
              5. Provide minimum of 48-hour notice to Owner and Landscape Architect and receive
                 written notice to proceed before interrupting any utility.

      B.      Protection of Persons and Property:
              1. Barricade open excavations occurring as part of this work and post with warning lights.
              2. Operate warning lights as recommended by authorities having jurisdiction.
              3. Protect structures, utilities, sidewalks, pavements, and other facilities from damage
                  caused by settlement, lateral movement, undermining, washout and other hazards
                  created by this work.
              4. Perform excavation within drip-line of large trees to remain by hand, and protect the root
                  system from damage or dry out to the greatest extent possible. Maintain moist condition
                  for root system and cover exposed roots with burlap. Paint root cuts of 1" diameter and
                  larger with emulsified asphalt tree paint.


1.06 INSPECTION AND APPROVAL
      A.      All materials described and specified herein are subject to inspection and approval by
              Owner's Representative.
      B.      Materials may be inspected by the Owner's Representative at source of supply or the
              Owner's Representative may require the Contractor to submit color slides and/or
              photographs which illustrate the specified plant material at the source of supply.
      C.      This inspection does not waive the right to reject any material after it has been delivered to
              the site and/or installed.


1.07 INITIAL INSPECTION AND ACCEPTANCE
      A.      Initial inspection of the planting to determine completion of contract work, exclusive of
              possible replacement of plants, will be made by the Owner's Representative upon completion
              of the work.
      B.      Initial inspection will not be conducted unless all items of work as outlined in 3. EXECUTION
              have been completed.
      C.      Five (5) days prior to the anticipated date of inspection submit written notice requesting
              inspection to Owner's Representative.
      D.      After inspection, the Contractor will be notified in writing, by the Owner, of initial acceptance
              of inspected work exclusive of the possible replacement of plants and correction of
              deficiencies in the requirements for completion of the work.
      E.      Maintain, as specified, areas not acceptable until corrections are completed and reinspection
              is conducted.
      F.      If a significant time delay (sixty to ninety days) is encountered, through no fault of the
              Landscape Contractor, inspection and initial acceptance of a major portion of the plantings
              may be granted.
      G.      All plants shall be alive and healthy at the time of initial acceptance.
      H.      Replacement of rejected plants before initial acceptance to meet the terms of initial
              acceptance shall not be considered a part of the guaranty and replacement requirement of
              this Specification.


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1.08 WARRANTY

      A.      Warranty Period: Warrrant all exterior planting material, for the warranty period
              indicated below, against defects including death, disease or infestation, and
              unsatisfactory growth, except for damage or loss of plant material caused by acts of
              God, or acts of vandalism.
              1. Warranty period for Herbaceous Plants: 2 years from the date of substantial completion.
      B.      Replacements within the Warranty Period:
              1. At six-month intervals, from the time of initial acceptance, the Owner, Engineer, and
                 Contractor will inspect and evaluate the growth and success of the plant material. If,
                 during these intermediate inspections, it is determined that the plant material is more
                 than 25 percent dead or in an unhealthy or unsightly condition, the contractor shall
                 remove and replace the plant material immediately.
              2. Remove dead plant material immediately. Replace immediately unless required to plant
                 in the succeeding planting season.
              3. Replacement plants and planting operations shall be in accordance with the original
                 specifications. Fully restore areas damaged by replacement operations to their original
                 and specified condition.
              4. The guarantee of all replacement plants shall extend for an additional period of one (1)
                 year from the date of their acceptance after replacement. In the event that a replacement
                 plant is not acceptable during or at the end of said extended guarantee, the Construction
                 Manager may elect subsequent replacement or credit for that item.
      C.      Warranty / Performance Standards:
              1. At the end of the Warranty Maintenance Period and at the time of final acceptance the
                 following performance standard shall be met:
                 a. 95% of the planted container-grown plants shall be alive and growing in a healthy
                      condition.


1.09 MAINTENANCE
      A.      Begin maintenance immediately after each area is seeded and planted and continue until
              final acceptance and approval by the Construction Manager at the end of the warranty
              maintenance period. Maintenance shall be performed by competent personnel supervised
              and employed by Contractor. The Contractor is solely responsible for all aspects of
              maintenance. The Owner will not be involved in maintenance activities until after the
              completion of warranty period. Begin maintenance immediately after each area is seeded
              and planted and continue until final acceptance and approval by the Construction Manager at
              the end of the warranty maintenance period.
              1. Herbaceous Plants: Maintain for the maintenance period by watering, weeding, and other
                   operations as required to establish healthy, viable plantings. Do not let weedy volunteer
                   species exceed 10% of total ground cover unless a different rate is agreed to in writing
                   prior to contract award.
                   a. During the warranty maintenance period, hand weed, cut and/or use
                       appropriate herbicide (by licensed applicator) a sufficient number of times
                       each growing season to keep weeds from setting seed and to keep
                       planted/seeded areas looking neat. Submit dated time sheets of required
                       maintenance operations to Construction Manager. Protect adjacent plant
                       material from damage when using herbicides.




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                      1) Hand pulling should include the removal of all aboveground and
                         belowground stems, roots, and flower masses prior to the development
                         of seeds. Care should be taken to disturb as little soil as possible during
                         hand pulling to avoid exposure of additional weed seed in the soil layer,
                         and protect adjacent emerging seedlings.


PART 2 PRODUCTS


2.01 PLANT MATERIALS
      A.      Plant Schedule: A list of plant materials is scheduled on the Drawing. In the event of any
              discrepancy between this schedule and the Plan Drawing showing the plants, the Plan
              Drawing shall govern.
      B.      Certification of inspection of plant materials required by Federal, State or other governmental
              agencies to accompany all shipments to be furnished to the Owner's Representative.
      C.      Nomenclature: The names of plants required under this Contract conform to those given in
              the "Standardized Plant Names", 1942 Edition, prepared by the American Joint Committee
              on Horticultural Nomenclature. Names of varieties not included therein conform generally
              with names accepted in the nursery trade.
      D.      Standards: All plant materials, grading, sizes, methods, etc., are to conform to the Standards
              of the American Association of Nurserymen, Inc., as contained in their current publication
              "American Standard for Nursery Stock", (ANSI Z60.1-2004). In the event there is a
              discrepancy between these standards and this Specification, the most restrictive requirement
              shall govern.
      E.      Labeling: Legibly tag all plants as to name and size.
      F.      Species and Variety: True to name as specified. Plants approved as true to name at time of
              initial acceptance which, during the guaranty period, exhibit characteristics indicating they are
              not true to name will be replaced at no cost to the Owner.
      G.      Availability: Before submitting his bid, the Contractor shall have investigated the sources of
              supply and satisfied himself that he can supply the listed plants in the size, variety and quality
              listed and specified. Failure to take this precaution will not relieve the Contractor from his
              responsibility for furnishing and installing all plant materials in strict accordance with
              the Contract Documents without additional cost to the Owner.
      H.      Quality:
              1. Growth habit typical for species and as indicated on the Plant Schedule.
              2. Sound, healthy, vigorous and free from insect pests, plant diseases and injuries.
              3. One sided plants or plants taken from tightly planted nursery rows will be rejected.
      I.      Size and Form:
              1. Equivalent or exceed measurements specified in the Plant Schedule.
      J.      Container Grown Plants:
              1. Container size as specified in Plant Schedule.
              2. In compliance with ANSI Z60.1-2004.


2.02 PLANTING SOIL
      A.      Refer to Section 31 05 13 Soils For Earthwork.




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2.03 FERTILIZER
       A.     Similar or equivalent to Milorganite (6-3-0).
       B.     Uniform in composition, dry and free flowing.
       C.     Fertilizer which becomes caked or otherwise damaged making it not suitable for use, will not
              be accepted.

2.04 MULCH
       A.     Shredded hardwood
       B.     Depth and locations as shown on drawings.
       C.     Furnish in bags or bulk.
       D.     Submit sample for approval by Owner's Representative.

2.05 WEED BARRIER
       A.     Filter fabric equivalent or similar to Soil-chek as manufactured by Brighton By-Products
              Company, Inc., New Brighton, PA., or 6-12-W Weed Barrier as manufactured by DeWitt
              Company, Polyprop Fabric Division, Sikeston, MO.
       B.     Material freely permeable to moisture transmittal and is a needle punched, non-woven
              polypropylene fabric.


2.06 EROSION CONTROL NETTING
       A.     See Civil plans


PART 3 EXECUTION


3.01 COMMENCEMENT DATE
       A.     At the earliest possible date site conditions permit.


3.02 PLANTING SEASON FOR BARE ROOT PLANTS
       A.     Commence as soon as weather and site conditions permit in early Spring.
       B.     Planting season to end on or before May 30.
       C.     Fall planting season: approximately September 15 to November 15.

3.03 PLANTING SEASON FOR CONTAINER GROWN PLANTS
       A.     April 1 to June 1 and August 15 to October 15.


3.04   PREPARATION
       A.     Stake out on the ground the locations of all plants and obtain approval of the Owner's
              Representative before excavation is begun.
       B.     Relocate incorrectly located plants at no expense to the Owner.



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3.05 EXCAVATION
      A.      Excavate the plant pit, centered at the location stake.
      B.      Excavate the plant pit large enough to provide for at least six inches (6") of planting soil
              backfill around and beneath the root system.
      C.      Where surface or subsurface conditions prevent digging a plant pit to specified dimensions,
              obtain approval from Owner's Representative to modify location of pit dimensions.

3.06 PLANTING
      A.      Bare Root Plants:
              1. Center the root structure in the plant pit; rest roots on six inches (6") of well tamped
                 planting soil.
              2. Holding the trunk of plant steady, lightly sprinkle planting soil over and around the roots.
              3. Periodically shake plant gently while backfilling to eliminate air pockets.
              4. When approximately two-thirds (2/3) of plant hole has been backfilled, fill hole with water
                 and allow soil to settle around roots.
              5. Complete backfilling; do not fill above original planted depth of plant.
              6. Mulch as shown on Detail.


3.07 FERTILIZING CONTAINER GROWN PLANTS
      A.      Vines and groundcover: One-eighth (1/8) pound per plant; place in bottom of plant pit.
      B.      Herbaceous plants: One-eighth (1/8) pound per plant.

3.08 EROSION CONTROL NETTING
      A.      Install in accordance with manufacturer's recommendations.
      B.      Install at the location shown on drawings.


3.09 MULCH
      A.      Install at consistent depth as shown on drawings.
      B.      Sub-grade surface of areas to receive mulch shall be sloped to drain, smooth and free of ruts
              and clods.

3.10 GRAVEL
      A.      Install at consistent depth as shown on drawings.
      B.      Sub-grade surface of areas to receive gravel shall be sloped to drain, smooth and free of ruts
              and clods.


3.11 WEED BARRIER
      A.      Install on sub-grade surface that is sloped to drain, as required, and is smooth and free of
              ruts and clods.




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      B.      Provide 4" overlap wherever edges join. Place material as close to plants as possible and
              pin with a T-pin.
      C.      Fit and stretch fabric to fit area and pin, as necessary, to keep in place.

3.12 CLEAN UP
      A.      Remove any soil, peat or similar material that has been brought onto paved areas by planting
              operations keeping those areas clean at all times.
      B.      Upon completion of the planting, dispose of all excess soil and stones resulting from the
              planting operation.
      C.      Remove all debris, resulting from planting operations, from the site.


3.13 MAINTENANCE
      A.      Begin immediately following installation of plants and continue until initial acceptance.
      B.      Include watering, weeding, cultivating, mulching, removal of dead material, resetting plants to
              proper grades or upright position and restoration of the planting saucer, and other necessary
              operations.
      C.      If any planting is done after lawn preparation, provide proper protection to lawn areas and
              repair any damage resulting from planting operation promptly at no cost to the Owner.
      D.      Maintenance after initial acceptance of the planting will be performed by the Owner.
      E.      Furnish detailed written recommended maintenance program to the Owner with a copy to
              Owner's Representatives, prior to initial acceptance of the various planting areas.
      F.      Maintenance performed by the Owner in accordance with recommended program will not
              affect the Landscape Contractor's obligation to guarantee and replace defective plants as
              herein described.


                                           END OF SECTION 32 93 00




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                                                  SECTION 33 05 26

                             LOCATE WIRE FOR ALL NON-ELECTRIC SYSTEMS

PART 1 - GENERAL

  1.01        SECTION INCLUDES

              A. Wire.
              B. Joints.
              C. Wire Ends.
              D. Anode Bag.

  1.02        DESCRIPTION OF WORK

              A. Construct locate wire for all non-electric systems.


PART 2 – PRODUCTS

  2.01        WIRE

              A. High strength steel cored copper coated AWG 12.
              B. 45 mil high density polyethylene insulation.
              C. Copperhead Industries Directional wire.
              D. Locate wire to be provided by owner (ISU Material Stores #7998.9675).

  2.02        JOINTS

              A. Nicotap Sleeve TI-064 (ISU Material Stores #7998.4500).
              B. Lawson 86502 heat shrink tube (ISU Material Stores #7998.6950).
              C. Owner will provide tapping sleeve, crimping tool, and heat shrink tube.
              D. Wire nuts or solder are not acceptable.

  2.03        ANODE BAG

              A. 17 pound anode bag.
              B. Bag provided by owner (ISU Material Stores #7998.0550).

  2.04        LOCATE WIRE BOX ASSEMBLY

              A. Electrical handybox with hinged opening. An 18 inch length of ¾ inch rigid conduit
                 extends out the bottom of the box.
              B. Grommet on end of conduit to avoid cutting wire.
              C. Box provided by owner. (ISU Material Stores #7998.1065).



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PART 3 – EXECUTION


  3.01        LOCATE WIRE
              A. Provide a locate wire as per section 2.01 on all direct buried non-electrical pipe.

              B. Tape the wire to the pipe with duct tape every 10 feet to assure that the wire is adjacent
                 the pipe.

  3.02        JOINTS
              A. Connecting two lengths of wire:

                  1. Strip ends of both wires.

                  2. Slide shrink wrap over one wire.

                  3. Insert ends of wire into each end of provided Nicotap fitting.

                  4. Crimp each end three times with provided crimping tool. No other tool to be used to
                     crimp Nicotap fitting.

                  5. Slide shrink wrap over joint so it covers all bare metal surfaces and heat shrink wrap
                     until it is tightly adhered to wire.

              B. BRANCH wire tap near (within 10 feet) end of wire:

                  1. Cut main wire to final length.

                  2. Slide shrink wrap over main wire down to location of branch tap.

                  3. Strip a 2 inch section of main wire. Do not strip all the way to end of wire, just the
                     location where the tap is to be made. Strip end of branch wire.

                  4. Place open end of Nicotap fitting over main wire. Crimp three times.

                  5. Insert end of branch wire into other end of Nicotap fitting. Crimp three times.

                  6. Hold branch wire flat against main wire, slide shrink wrap over joint so it covers all
                     bare metal surfaces and heat shrink wrap until it is tightly adhered to wire.

              C. BRANCH wire tap NOT near of wire:

                  1. Cut main wire. Install new branch as per Item B above.

                  2. Splice main wire back together using a separate Nicotap as in A above.

                  3. The Nicotap fittings are NOT intended to connect three separate pieces of wire.
                     Attempting to do so is fairly difficult and creates a poor joint. It is much faster to
                     make two separate joints as indicated in this procedure.

              D. Wire nuts or solder are not acceptable.




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  3.03        WIRE ENDS
              A. Building Entrances:

                  1. The locate wire shall end at the building wall and terminate in a locate wire box next
                     to building.

                  2. Set locate wire box in backfill next to building wall. Run main locate wire up conduit
                     into locate wire box and leave 12 inches coiled inside box.

                  3. Branch connection to an anode bag shall be made below locate wire box.

              B. Manholes:

                  1. The locate wire shall end at each manhole, and so requires a branch connection to
                     an anode bag at each manhole (2 anode bags per section of locate wire.) Each
                     locate wire shall have its own anode bag.

                  2. The main wire shall enter the manhole just under the rim, set in the mortar bed of any
                     adjusting rings.

                  3. A 12 inch long length of wire shall be extended into the manhole at each location.

              C. Direct Buried Valve Boxes:

                  1. Make a wire branch connection onto the locate wire as it passes by a direct buried
                     valve box. Run a single branch wire up the outside of the valve box and then extend
                     this wire 12 inches into the valve box through a contractor drilled ¼ inch hole.

                  2. Hole for locate wire shall be directly below the valve box lid where it is easily
                     accessible. Some valve boxes may be difficult to drill and require a cutting torch to
                     make an opening. Saw cut hole is not acceptable.

                  3. Assure that wire will not be pinched by the lid.

                  4. Note that an anode bag is not typically required at this location.

              D. Post Indicator Valve and Natural Gas Risers:

                  1. A wire branch connection shall be made onto the locate wire as it passes by a direct
                     buried valve box. Run a single branch wire up the outside of the valve box or riser

                  2. Attach locate wire box assembly to the pipe or riser with stainless steel strap.

                  3. Run locate wire branch line up through conduit of locate wire box, and leave 12
                     inches coiled in locate wire box.

              E. New Pipe Connection to Existing Main:

                  1. Case 1- Existing main has locate wire: Cut existing locate wire. Make branch
                     connection for new branch wire. Splice existing wire back together.

                  2. Case 2- Existing main has NO locate wire: Install anode bag at start of new wire
                     right next to existing main.




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  3.04        ANODE BAG
              A. Attach a 17 pound anode bag with a Nicotap sleeve to the locate wire at each end of the
                 main locate wire as indicated in the above sections. The anode bag provides cathodic
                 protection for the locate wire and an electrical ground for utility locating equipment.

              B. Locate the anode bag 1 foot below the horizontal plane of the locate wire.

              C. Backfill the anode bag hole with native material and soaked with 5 gallons of water
                 before remainder of trench is backfilled.

  3.05        QUALITY CONTROL
              A. The entire length of the locate wire including the splices shall be inspected by the Owner
                 prior to back filling.

              B. The construction inspector will coordinate a continuity verification of the installed locate
                 wire system, generally within one week after the installation.

              C. The continuity will be verified by utilizing the services of the University utility locator.

              D. The contractor is responsible to expose and repair any defects.


                                                  END OF SECTION




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                                                  SECTION 33 10 00

                                 DOMESTIC WATER DISTRIBUTION SYSTEM

PART 1 – GENERAL

1.01     SUMMARY
         A.       Pipe.

         B.       Fittings.

         C.       Pipeline Accessories.

         D.       Pipe installation.

         E.       Valves.

         F.       Fire hydrant assemblies.

         G.       Valve boxes.

         H.       Water Meters.

1.02     DESCRIPTION OF WORK
         A.       Construct water mains and building service pipes.

1.03     SUBMITTALS

         A.       Manufacturer's instructions for installation for all pipe and fittings utilized.

         B.       Construction sequencing.

         C.       Catalog cuts, samples, manufacturer's data and listing of applicable standards for
                  special, unique or proposed substitute materials if requested by the Engineer.

         D.       Joint restraint system.

         E.       Project Record Documents.

         F.       Upon requests the Contractor will provide Material Certifications to the Engineer.


1.04     DELIVERY, STORAGE AND HANDLING
         A.       Deliver only materials that fully conform to these specifications or for which submittals
                  have been provided to the Engineer and approved for use.

         B.       Store materials in a protected environment, on pallets or lagging.

         C.       Pipe and fittings contaminated with mud and surface water shall be removed from the site
                  and not used in construction unless thoroughly cleaned, inspected and approved by the
                  Engineer.




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         D.       Handle all materials so as to avoid damage. Replace any damaged materials. Remove
                  damaged materials from the site.

1.05     CONFLICTS

         A.       Expose potential conflicts such as utility lines and drainage structures in advance of
                  construction. Verify elevations and locations and verify clearance for proposed
                  construction.

         B.       Complete elements of work which can affect line and grade in advance of sanitary sewer
                  construction unless noted on plans.

         C.       Notify the Engineer of conflicts discovered or changes needed to accommodate unknown
                  conditions.


PART 2 – PRODUCTS

2.01     WATER MAIN PIPE

         A.       Ductile Iron Pipe 4” to 24”:
                  1.       Ductile iron pipe per ANSI/AWWA C 151/A21.51.
                  2.       Special Thickness Class 52.
                  3.       Joint Type: Mechanical joint per ANSI/AWWA C111/A21.11.
                  4.       Glands: Replace standard glands with set screw type locking retainer glands.
                           a.       Tyler Union Retainer Gland, Ebaa Iron 1100 Megalug or equal.
                           b.       Gaskets: Per ANSI/AWWA C111/A21.11.
                  5.       Cement-mortar lined, per ANSI/AWWA C104/A21.4 with asphaltic seal coat.
                  6.       External coating: asphaltic.
                  7.       Markings on Pipe:
                           Cast or metal-stamped on pipe (often on the end of the bell.):
                           a.       Name of manufacturer.
                           b.       Country of casting.
                           c.       Year produced.
                           d.        “DI” or “Ductile”
                           Marked on pipe by other means:
                           e.       Weight, thickness class, or nominal thickness.

         B.       Ductile Iron Pipe 30” and larger:
                  1.       Ductile iron pipe per ANSI/AWWA C 151/A21.51.
                  2.       Pressure Class 250.
                  3.       Joint Type: Push joint with locking joint.
                           a.       American Flex-Ring, Griffin Snap-Lok, Clow Super-Lock, or US Pipe HP-
                                    Lok.
                           c.       Only models using locking ring factory welded to pipe are acceptable.
                                    Field welds are not acceptable. Joints using teeth embedded in rubber
                                    rings are not acceptable.
                           b.       Gaskets: Per ANSI/AWWA C111/A21.11.
                  4.       Cement-mortar lined, per ANSI/AWWA C104/A21.4 with asphaltic seal coat.
                  5.       External coating: asphaltic.
                  6.       Markings on Pipe:
                           Cast or metal-stamped on pipe (often on the end of the bell.):
                           a.       Name of manufacturer.
                           b.       Country of casting.
                           c.       Year produced.
                           d.        “DI” or “Ductile”


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                            Marked on pipe by other means:
                            e.     Weight, thickness class, or nominal thickness.

         C.       Polyethylene Pipe 4” and larger:
                  1.      PE 3608 or 4710 HDPE as manufactured by CP Chem Performance Pipe.
                  2.      Minimum Thickness: DR 11.
                  3.      Pipe shall be ductile iron pipe size (DIPS), black with 3 equally spaced pairs of
                          blue stripes.
                  3.      Pipe shall meet AWWA C906.
                  4.      Joints shall be made with proper butt weld fusion joints or electrofusion
                          couplings. All joints to be made to manufacturers specifications.
                  5.      CP Chem Performance Pipe Driscoplex 4000.

         D.       Polyethylene Pipe 2” and 3”
                  1.      PE 3608 or 4710 HDPE as manufactured by CP Chem Performance Pipe.
                  2.      Minimum Thickness: DR 11.
                  3.      Pipe shall be iron pipe size (IPS), black.
                  3.      Pipe shall meet AWWA C901, ASTM D3035.
                  4.      Joints shall be made with proper butt weld fusion joints or electrofusion
                          couplings. All joints to be made to manufacturers specifications.
                  5.      CP Chem Performance Pipe Driscoplex 4100.

2.02     BOLTS FOR WATER MAIN PIPE AND FITTINGS
         A.       Bolts for chilled water mains for all mechanical and set screw joints shall be T bolts
                  meeting AWWA C111.

         B.       Bolts shall be Cor-ten with Ceramic filled baked on fluorocarbon resin coating. Uncoated
                  Cor-Ten steel bolts are not allowed.

         C.       NSS Industries Cor-Blue or approved equal


2.03     FITTINGS
         A.       For Ductile Iron Pipe- all sizes:
                  1.     Ductile iron fittings per ANSI/AWWA C110/A21.10 or ANSI/AWWA C153/A21.53
                         (Compact fittings).
                  2.     Pressure rating : 4-24” 350 psig, 30-36” 250 psig.
                  3.     Joint Type: Mechanical joint per ANSI/AWWA C111/A21.11 (note that all fittings
                         to be mechanical joint even on 30 and 36” systems).
                  4.     Glands: Replace standard glands with set screw type locking retainer glands.
                         a.        Tyler Union Retainer Gland, Ebaa Iron 1100 Megalug or equal.
                         b.        Gaskets: Per ANSI/AWWA C111/A21.11.
                  5.     Cement-mortar lined per ANSI/AWWA C 104/A21.4 with asphaltic seal coat.
                  6.     External coating: asphaltic.
                  7.     Markings on fittings: (to be cast on outside of fitting).
                         a.        Name of manufacturer.
                         b.        Country of casting.
                         c.        Pressure rating.
                         d.        AWWA standard number.
                         e.        “DI” or “Ductile”

         B.       Buttweld Fittings for Polyethylene Pipe 2” to 8”:
                  1.      Fittings to be molded butt weld fittings conforming to ASTM D2513, ASTM
                          D3261, and AWWA C906.

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                  2.        Fittings to be same resin as pipe being fused.
                  3.        Fittings to be pressure Class 150.

         C.       Buttweld Fittings for Polyethylene Pipe 10” and larger:
                  1.      Fittings to be factory fabricated segmented butt weld fittings conforming to ASTM
                          D2513 and AWWA C906.
                  2.      Fittings to be same resin as pipe being fused.
                  3.      Fittings to be pressure Class 150.

         D.       Electrofusion couplings for Polyethylene Pipe:
                  1.      Fittings to be Frialen DIPS electrofusion fittings as manufactured by Friatec, or
                          approved equal.
                  2.      Fittings to be same resin as pipe being fused.

2.04     SPECIAL FITTINGS
         A.       Flanges:
                  1.     Flanged Ductile Iron Pipe:
                         a. Where flanges are required on ductile pipe, use ductile pipe with a factory
                            installed flange.
                         b. Solid back threaded flange per AWWA C115to be factory installed.
                         c. Gaskets: Rubber or approved composition; 0.125-inch thick; full face.
                  2      Flange Adapter:
                         a. Only where specifically noted on drawings as a separate adapter, a flange
                            adapter may be used.
                         b. Manufacturer: Dresser Manufacturing Division, Bradford, Pennsylvania.
                         c. Model: Style 227 or approved equal for 3”-12”, Style 128 or approved equal for
                            14”-24”.

         B.       Solid Sleeve:
                  1.      Utilize Mechanical joint sleeves as per AWWA C-153 where a connection is to be
                          made to the existing piping. Used to allow connection into system AFTER
                          hydrostatic test and disinfection.
                  2.      Manufacturer: Tyler 5-644 or equal, short or long as required..

         C.       Field retrofit Restrained Joints:
                  1.       All joints are to be restrained joints unless specifically noted otherwise.
                  2.       Existing push joint pipes that need to be restrained may be cut out and replaced
                           or retrofit with a restraint kit.
                  3.       Restraint kit shall be set screw split rings connected by rods.
                  4.       Manufacturer: Ebaa Iron.
                  5.       Model: Series 1100HD or approved equal.
                  6.       To be used only where specifically indicated.

         D.       Polyethylene to Ductile connections:
                  1.      DIPS MJ Adapter meeting AWWA C906.
                  2.      Stainless Steel stiffener to be used on all pipes 6” and greater.
                  3.      Adpater to be same resin and SDR as pipe being fused to.
                  4.      Adapter shall consist of a buttweld joint to the PE pipe on one end and a raised
                          ring to engage the gland ring on the MJ joint of the ductile iron pipe on the other
                          end, providing a restrained joint.
                  5.      As manufactured by Performance Pipe or approved Equal
                  6.      This fitting to be used to connect PE pipe to MJ valves.




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Phase 2 - Small Animal Hospital Renovation and Addition         DOMESTIC WATER DISTRIBUTION SYSTEM
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2.05     VALVES

         A.       General:
                  1.     Valves shall be manufactured in the United States.
                  2.     Same size as pipeline in which it is installed, unless noted otherwise on
                         drawings.
                  3.     Manufacturer's name or initial and working pressure cast on valve body.
                  4.     Open when turned counter clockwise.
                  5.     Factory tested to twice the rated working pressure.
                  6.     Buried service: Mechanical joints.
                  7.     All valve operators to be supplied by valve supplier.

         B.       Gate Valves, Buried Service 2” to 12”
                  1.     Type: Non-rising stem, resilient seat.
                  2.     Pressure rating: 150 psi working pressure, minimum.
                  3.     Comply with: ANSI/AWWA C509.
                  4.     Body and Bonnet: Ductile Iron ASTM A536.
                  5.     Interior and Exterior finish: Epoxy coating conforming to AWWA C550.
                  6.     Ends: Mechanical Joint with set screw locking glands.
                  7.     Wedge: Iron wedge fully encapsulated with molded rubber; no exposed iron.
                  8.     Shaft seals: Double O-rings permanently lubricated between seals. Lubricant
                         certified for use in potable water.
                  9.     Exposed bolts and hex nuts: Type 304 stainless steel.
                  10.    Operator: 2-inch square nut.
                  11.    Manufacturer: Mueller A-2362, Clow Model 2639 F-6100 or approved equivalent.

         C.       Butterfly Valves, Buried Service 14” and larger:
                  1.       Type: High performance resilient seat.
                  2.       Pressure rating: 150 psi working pressure, minimum.
                  3.       Comply with: ANSI/AWWA C504.
                  4.       Body, Bonnet and Discs: Cast iron ASTM A126.
                  5.       Ends: Mechanical Joint with set screw locking glands..
                  6.       Seat and Disc: Disc to be epoxy coated. Seat to be fully rubber encapsulated
                           with stainless steel reinforcing ring. Shaft and disc to be offset.
                  7.       Shaft seals to be maintenance free type: Double O-rings permanently lubricated
                           between seals with lubricant certified for use in potable water or chevron type.
                  8.       Exposed bolts and hex nuts: Type 304 stainless steel (usually SPECIAL
                           ORDER.)
                  9.       Operator: 2-inch square nut on an underground rated gear operator.
                  10.      Interior and Exterior finish: Epoxy coating conforming to AWWA C550 (Usually
                           SPECIAL ORDER).
                  11.      Manufacturer: Mueller Lineseal III Fig 11.3, Clow 4500 or 1450, or approved
                           equivalent.

2.06     APPURTENANCES

         A.       Valve Box:

                  1.        Applicability: For all buried gate or butterfly valves.
                  2.        Type: screw extension.
                  3.        Material: Cast iron.
                  4.        Cover: Cast iron, labeled "WATER", logo minimum 2 inches high;.
                  5.        Wall thickness: 3/16-inch, minimum.
                  6.        Inside diameter: 5 1/4-inches, minimum.
                  7.        Length: Adequate to bring top to ground surface. 2 piece construction for depths
                            5-7 feet. Greater than 7 feet may require extension.


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                  8.        Factory finish: Asphalt coating.
                  9.        Manufacturer: Tyler 6850, or equal.

         B.       Post Indicator Valve Boxes (PIV)

                  1.        Post indicator for mounting to gate valve with 2" operating nut.
                  2.        Height of post to be field adjustable near grade.
                  3.        Indicator window shall read "Open" or "Shut" and shall be adjusted for the
                            number of turns required for the valve it is mounted on
                  4         Post shall be lockable with a padlock. Padlock to be furnished by Owner.
                  5.        Furnish with standard tamper switch.
                  6.        Manufacturer: Mueller Indicator Post A-20806 - or equal.

2.07     FIRE HYDRANT
         A.       Material: Conform to ANSI/AWWA C510 and C502, as modified herein.

         B.       Manufacturers:. Clow 2500.

         C.       Features:

                  1.      Break-away stem coupling.
                  2.      Operating nut: Pentagonal, 1 1/2 inch.
                  3.      Inlet nominal size: 6 inch.
                  4.      Inlet connection type: 6 inch Mechanical Joint with locking retaining glands.
                  5.      Hose nozzles: two 2-1/2 inch.
                  6.      Steamer nozzle: one 4 1/2 inch.
                  7.      Nozzle Threads: National Standard nozzle threads.
                  8.      Nominal bury length: Match water main depth, but not less than 5 feet.
                  9.      Foot valve size: 5 1/4 inch.
                  10.     Direction of opening: CCW.
         D.       Substitutions: None, unless approved in writing by Owner.

         E.       Bury length: Refer to Plans.

         F.       Painting:

                  1.        Shop coating; per ANSI/AWWA C502.
                  2.        Field coating above grade; Exterior coating, type and color selection by Owner.

         G.       Exposed Bolts And Hex Nuts: Stainless steel.

2.08     DISINFECTION AGENT – CHLORINE

         A.       Calcium Hypochlorite, per ANSI/AWWA B300.

         B.       Chlorine containers must have AWWA stamp.

2.09     WATER METER

         A.       Compound meter for cold water applications

         B.       Badger Compound Series Meter provided by owner.

2.10     WALL PENETRATION SEALS

         A.       Modular interlocking elastomertic mechanical seals.

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         B.       Manufacturers: Thunderline Link-Seal or equal.
         C.       Standard Service Applications:

                  1.        Temperature Range :-40 to +250 F
                  2.        Material : EPDM Rubber conforming to ASTM D2000
                  3.        Color: Black
                  4.        Bolts and nuts: Steel with Zinc Coating


PART 3 – EXECUTION

3.01     GENERAL PIPE AND VALVE INSTALLATION
         A.       Install only approved materials.

         B.       Protect pipe joints and valves from damage while handling and storing.

         C.       Use no deformed, defective, gouged, or otherwise damaged pipe or fittings.

         D.       Excavate and prepare trench as outlined in Utility Earthwork Specifications, Section 31
                  23 00 Utility Trench Excavation and Backfill.

         E.       Contractor shall expose existing pipe at the new pipe connection point sufficiently to
                  evaluate exact termination point of new pipe.

         F.       Prepare the trench bottom with sufficient exactness so that only minor movement of the
                  pipe will be necessary after installation.

         G.       Clean pipe interior prior to placement in the trench. Do not allow any foreign material to
                  enter pipe during installation.

         H.       Install pipe with fittings and valves to the lines and grades shown in the plans, with a
                  maximum allowable variation of 3 inches.

         I.       Provide uniform bearing along the full length of the pipe barrel. Provide bell holes.

         J.       Clean joint surfaces thoroughly and apply lubricant approved for use with potable water.

         K.       Make joints according to pipe manufacturer's recommendations and these specifications.

         L.       Limit joint deflections to one degree less than pipe manufacturer's recommended
                  maximum limit.

         M.       Tighten bolts in a joint evenly around the pipe.

         N.       Install remaining pipe bedding in accordance with Utility Earthwork Specifications,
                  Section 31 23 00 Utility Trench Excavation and Backfill.

         O.       Do not install pipe in water. Keep trench free of water. Refer to ANSI/AWWA C651 for
                  wet trench installation procedures, if such installation is approved by the Engineer.

         P.       Close ends of installed pipe with water main cap or plug and secure bolts on joints during
                  nights, non-working days, and during all rain events when pipe installation is not actively
                  occurring in a dewatered trench.

         Q.       Do not allow any water from the new pipeline to enter existing distribution system piping.


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         R.       Calcium hypochlorite granules shall be placed at the beginning of main and in each
                  section of pipe, in the following amounts (note that this exceeds AWWA C651
                  minimums). In HDPE, granules shall be placed prior to facing the pipe for fusion.

              Pipe diameter                               Amount of Calcium Hypochlorite granules
                   In.                               Beginning of main                 Per pipe length
                    4                                     0.5 oz                           0.02 oz
                    6                                     1.0 oz                           0.04 oz
                    8                                     2.0 oz                           0.08 oz
                   10                                     3.0 oz                           0.18 oz
                   12                                     4.0 oz                           0.16 oz
                   16                                     8.0 oz                           0.32 oz


         S.       Prior to testing, contractor shall install tapped MJ caps or MJ plugs on the pipe ends as
                  shown in the appropriate detail. The cap will require an MJ adpter for PE pipe. Fusion
                  welded PE caps are not acceptable. For lines smaller than 12”, connect 3/4” soft copper
                  piping to the tap and extend above finish grade. Terminate line with a ¾” ball valve
                  above grade for testing . On lines 12” diameter and larger, the tap and test line shall be
                  2” copper or threaded galvanized steel piping brought above grade with a 2” ball valve
                  above grade.

         T.       Owner shall fill line, test for chlorine residual, and conduct hydrostatic and bacteriologic
                  tests per AWWA C651 and section 3.8.

         U.       Owner shall remove caps and plugs and connect new pipe to existing pipe tap after
                  hydrostatic and bacteriologic tests have been passed unless otherwise indicated.

         V.       In addition to trench backfill, Contractor shall backfill area where connection to existing
                  piping is to be made. Contractor is only responsible for one backfill. Owner may choose
                  to have the Contractor backfill immediately after pipe installation, or after final connection
                  by Owner. Coordinate with Owner. If Contractor is directed to backfill immediately after
                  installation, Owner will be responsible for re-excavation and backfill for final Owner
                  installed connection.

         W.       Contractor to set tops of valve boxes to finish grade unless otherwise directed by the
                  Owner.

         X.       Contractor shall check the working order of all valves by opening and closing through
                  entire range.

3.02     ADDITIONAL REQUIREMENTS FOR DUCTILE IRON PIPE INSTALLATION

         A.       Install in accordance with AWWA C600.

         B.       Cut pipe perpendicular to pipe barrel. Do not damage cement lining. Bevel cut ends for
                  push-on joints according to AWWA C600.

3.03     ADDITIONAL REQUIREMENTS FOR POLYETHYLENE PIPE INSTALLATION

         A.       Fittings may be buttweld or electrofusion.

         B.       Follow all manufacturers instructions for chosen welding procedure.

         C.       Install pipe per manufacturer’s instructions.



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3.04     FIRE HYDRANT INSTALLATION

         A.       Fire hydrant shall be installed with a shut-off valve that is directly coupled to the hydrant
                  by using an anchor pipe with locking glands on the mechanical fittings. Concrete shall not
                  be used to restrain or support the hydrant.

         B.       Position auxiliary valve at least 15 inches (clearance) away from fire hydrant.

         C.       One cubic yard of 3/4" washed river rock shall be placed under the hydrant to allow
                  proper drainage of the hydrant barrel. Install layer of 6 mil poly sheeting over river rock
                  before backfill.

         D.       Separated excavation material shall be used to backfill around the hydrant.

         E.       Fire Hydrant Depth Setting:

                  1.        Height of fire hydrant nozzle to match standard detail.
                  2.        Use adjacent finish grade to determine setting depth. Nozzle height to match
                            detail. Adjust barrel length, or add or remove extensions as required.
                  3.        If finish grade is not to be obtained during the current project, consult with the
                            Engineer for proper setting dimension.

         F.       Coordinate installation with tracer wire installation.

         G.       Refer to Plans for location.

         H.       Orient fire hydrant nozzles as directed by the Engineer.

3.05     LOCATE WIRE SYSTEM

         A.       Install a Locate wire system as per Section 33 05 26.

3.06     STRUCTURE PENETRATIONS

         A.       Wall Sleeves:

                  1.        Install wall penetration seals where pipe passes through building wall.
                  2.        Wall penetration hole diameters shall conform to the manufacturer's tabulated
                            recommendations.
                  3.        See appropriate Detail on drawings.
                  4.        Install permanufacturer’s recommendation.

3.07     SERVICE TAPS AND CONNECTIONS

         A.       Owner shall provide service tap and connection as shown on the plans.

         B.       Owner shall connect to tap using solid sleeve and a short piece of pipe after all tests
                  have passed.

3.08     TESTING AND FLUSHING

         A.       After the installation is complete with tapped caps on each end, the Owner shall connect
                  to the riser from the tapped cap and fill the system with water.

         B.       The Owner shall purge air from the system, with the Contractor remedying any trapped
                  air bubbles.


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         C.       The Owner shall close the valve used to fill the line and the system.

         D.       The Owner shall isolate the pipe and perform a hydrostatic test of the system.

         E.       The contractor may witness the test, and the Owner will provide the Contractor with the
                  results.

         F.       The system shall be pressurized to 150 psig for a minimum of two hours. System
                  pressure shall drop no more than 5 psig during the 2 hour test while no water is being
                  added to the system.

         G.       After the hydrostatic test, the system shall sit idle for 24 hours.

         H.       The project inspector shall coordinate to have Utilities take a water sample at the furthest
                  location if the system from a contractor provided tap locations.

         I.       After 24 hours Utilities will test the water to check for a minimum free chlorine residual of
                  25 mg/L. If the chlorine residual passes, the Owner utilities department will flush the new
                  main through the tapped caps.

         J.       After the test for chlorine residual is passed and the line flushed, Utilities shall take two
                  samples for bacteriological testing, at least 24 hours apart. Samples cannot be taken
                  from hydrants or through hoses.

         K.       Utilities shall notify the project inspector when this is done. The results from the
                  bacteriological tests take 48 hours each to pass.

         L.       The new line shall not be connected to the system until the tests pass.

         M.       At least 5 working days should be anticipated for hydrostatic testing, chlorination, and
                  bacteriological testing.



                                                  END OF SECTION




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Phase 2 - Small Animal Hospital Renovation and Addition          DOMESTIC WATER DISTRIBUTION SYSTEM
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                                                SECTION 33 30 00
                                           SANITARY SEWER UTILITIES

1.01     SUMMARY

         A.       Reference is made to the Iowa Department of Transportation English Standard
                  Specifications for Highway and Bridge Construction and all Supplemental Specifications
                  by the term "Iowa DOT Specification Number" and /or "IM Number".

1.02     SUBMITTALS

         A.        Manufacturer's instructions for installation of pipe and appurtenances.

         B.        Construction sequence.

         C.       Catalog cuts, samples, manufacturer's data and listing of applicable standards for
                  special, unique or proposed substitute materials if requested by the Engineer.

         D.       All precast concrete structures.

         E.       Certification that materials being provided meet the requirements of these specifications
                  or that alternate materials or substitutions have received written approval of the Engineer.

         F.       Project Record Documents.

         G.       Upon requests the contractor will provide Material Certifications to the Engineer.

1.03     SUBSTITUTIONS

         A.       Use only materials conforming to these specifications unless permitted otherwise by the
                  Engineer.

         B.       Obtain written approval of the engineer for all substitutions prior to use.

1.04     DELIVERY, STORAGE AND HANDLING

         A.       Deliver only materials that fully conform to these specifications or for which submittals
                  have been provided to the Engineer and approved for use.

         B.       Store materials and handle to avoid damage. Replace any damaged materials. Remove
                  damaged materials from site.

1.05     CONFLICTS

         A.       Expose potential conflicts such as utility lines and drainage structures in advance of
                  construction. Verify elevations and locations and verify clearance for proposed
                  construction.

         B.       Complete elements of work which can affect line and grade in advance of sanitary and
                  storm sewer construction unless noted on plans.

         C.       Notify the Engineer of conflicts discovered or changes needed to accommodate unknown
                  conditions.




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1.06     SPECIAL REQUIREMENTS

         A.       Stop Work: Stop work and notify the Engineer immediately if contaminated soils,
                  historical artifacts or other environmental or historic items are encountered.

         B.       Conform to local, state and federal requirements.


PART 2 – PRODUCTS

2.01     SANITARY SEWERS 4" - 12": (Gravity)

         A.       Polyvinyl Chloride Pipe (PVC)

                  1.        Conform to ASTM D 3034, pipe stiffness per ASTM D 2412, minimum thickness
                            Solid Wall Pipe SDR 35.
                  2.        PVC plastic in accordance with ASTM D 1784, Cell Classification 12454 B.
                  3.        Integral Bell and spigot type rubber gasket push joint fittings conforming to ASTM
                            D 3212 and ASTM F 477.

2.02     FLEXIBLE COUPLINGS

         A.       Rubber Boot Connector.

                  1         Connector shall be a solid piece rubber connector with stainless steel band
                            clamps.
                  2         Connector shall be Fernco or approved equal.

2.03     LUBRICANT FOR JOINT GASKETS

         A.       Soap-based only.

         B.       DO NOT USE petroleum based lubricant.

2.04     STANDARD MANHOLES

         A.        Concrete Manhole sections

                  1.        Precast reinforced concrete manhole sections conforming to ASTM C478, 48"
                            diameter, 5" minimum wall thickness, one cage reinforcing, minimum 0.18 square
                            inches reinforcement per linear foot of pipe wall.
                  2.        Precast integral concrete manhole bottom section and base shall not be used
                            unless explicitly allowed on drawings.
                  3.        Joints: Flexible joint rubber ring gasket type, profile gasket or 0-ring gasket;
                            conform to ASTM C443.
                  4.        Steps: aluminum or copolymer encapsulated steel reinforcing bar spaced as per
                            detail drawing.
                  5.        Conform to standard drawings.

         B.       Pipe connections:

                  1.        Use knockouts or saw cut openings for piping connections. Precast sleeves not
                            to be used.
                  2.        Conform to standard drawings.



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         C.       Frame and cover castings:

                  1.        Machined bearing surfaces. Manhole shall not have anti-rocking lugs.
                  2.        Flat gasket seal for sanitary sewers.
                  3.        Solid lid for sanitary manholes.
                  4.        Note inset, recessed pick holes on solid lid, see standard detail for pick hole
                            locations.
                  5.        Manufacturer for casting with solid lid : Neenah Model R-1670-5216. No
                            substitution. FP&M # 6641.4500.

         D.       Concrete adjusting rings:

                  1.        Use precast concrete adjusting rings for any grade adjustment.
                  2.        No bricks or site poured adjusting rings shall be used.

PART 3 - EXECUTION

3.01     EXAMINATION

         A.       Verify measurements at site; make necessary field measurements to accurately
                  determine pipe make up lengths or closures.

         B.       Examine site conditions to insure that construction operation do not pose hazards to
                  adjacent structures or facilities.

3.02     LINE AND GRADE

         A.        Install pipe to line and grade shown on plans. Set field grades to invert of pipes.

         B.       Notify the Engineer immediately if discrepancies or irregularities are discovered in line or
                  grade shown by grade takes.

         C.       Make detailed measurements as required to construct work to line and grade established
                  by line and grade hubs.

         D.       Batter Boards:

                  1.        Set grade points at 25 foot intervals at convenient offset from centerline of pipe.
                  2.        Set batter boards as necessary to construct to design line and grade.
                  3.        Provide at least three batter boards at the pipe laying area during construction as
                            check on accuracy of grades.
                  4.        Check line and grade of each pipe length with grade rod and plumb bob.

         E.       Laser Beam:

                  1.        Set laser equipment to proper line and grade from line and grade hubs.
                  2.        Check line and grade of laser at 25 foot intervals for first 100 feet and then at 50
                            foot intervals for each setup.
                  3.        Check line and grade of each pipe length.

3.03     PIPE INSTALLATION

         A.       Provide trench excavation, pipe bedding and backfill as specified in Section 33 05 22
                  Utility Trench and Backfill. Note bedding requirement of Section 33 05 22.1.3 E for
                  sewers.


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         B.       Begin at lowest point in line. Lay groove or bell end pointing upstream unless specifically
                  noted otherwise.

         C.       Prepare trench bottom to design line and grade so that only minor movement of pipe is
                  necessary after installation. Use bedding as specified on detail drawing.

         D.       Inspect pipe for defects before carefully lowering into trench. Do not install damaged or
                  defective pipe.

         E.       Clean pipe interior and joints prior to lowering into trench. Keep pipe clean during
                  construction.

         F.       Do not lay pipe in water or on saturated soil or bedding, or allow water to rise in trench
                  around pipe, unless approved by the Engineer.

         G.       Lay pipe to design line and grade.

         H.       Provide uniform bearing for full pipe barrel length.

                  1.        Excavate bell holes as necessary for uniform support of pipe barrel on bedding
                            material.
                  2.        Do not block pipe above bedding unless controlled density fill, concrete bedding,
                            or concrete easement is to be used.

         I.        Assemble joints as specified by pipe manufacturer.

         J.       Install Fernco cap at exposed ends of pipe whenever pipe installation is not in progress.

         K.       Do not disturb installed pipe and bedding when using movable trench boxes and shields.
                  Block or anchor pipe as necessary to prevent joint displacement.

         L.       Saw cut ends of pipe at manholes and structures. Do not hammer cut or break pipe.

         M.       Provided manholes where indicated on plans and as specified under Manholes.

         N.       Correct misalignment, displacement or otherwise defective pipe by removing, relaying or
                  replacing pipe at Contractor's expense.

3.04     LOCATE WIRE SYSTEM

         A.        See Section 33 05 26 on Locate Wire System. All non-electric lines to have locate wires.

3.05     PIPE JOINTING

         A.       Joint Cleaning: Clean joint surfaces with wire brush to remove soil or foreign material
                  prior to jointing pipe

         B.        Assemble joints in accordance with pipe manufacturer's recommendations.

                  1.        Use equipment that does not apply damaging forces to pipe joints.
                  2.        Use bar and block or internal or external jointing devices or other devices as
                            recommended by pipe manufacturers.

         C.       Polyvinyl Chloride Pipe (PVC):

                  1.        Coat rubber gasket and joint with lubricant immediately prior to closing joint.

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         D.       Connections Between Dissimilar Pipes:

                  1.        Use Fernco couplings.
                  2.        Where adapters or couplings are not commercially available, the Engineer may
                            authorize use of a concrete `C' collar as per IDOT.

3.06     TOLERANCES

         A.       Horizontal and vertical alignment of each pipe length of gravity sewer lines shall not vary
                  from design lines and grade by more than 1 % of the inside diameter of the pipe or '1/4
                  inch, whichever is larger.

         B.       Tolerance allowed for gravity sewer lines only if design line and grade is sufficient to
                  prevent backslope when tolerance limits are reached.

         C.       Reverse slope on gravity pipe is prohibited. Remove and relay pipe to proper grade.

         D.       Horizontal and vertical alignment of force mains shall not vary from design line and grade
                  by more than 3 inches.

3.07     CONFLICTS

         A.       Provide temporary support for existing water, gas, telephone, power or other utilities or
                  service that cross trench.

                  1. Support rigid galvanized steel conduit when length of exposed conduit is greater than
                     8 feet.
                  2. Support PVC conduit when length of exposed conduit is greater than 4 feet

         B.       Compact backfill under existing utility crossing as specified in Utility Trench and Backfill.
                  or construct utility line supports where indicated on plans or as directed by the Engineer.

3.08     MANHOLE INSTALLATION

         A.        Subgrade Preparation:

                  1.        Undisturbed soil; Hand grade to accurate elevation.
                  2.        Disturbed soil; Machine compact to 95 percent of Standard Proctor Density and
                            hand grade to accurate elevation or install stabilization material as directed by
                            the Engineer.

         B.       Installation of Poured In Place Base:

                  1.        Bed base riser section in cement mortar.
                  2.        Assure proper vertical and horizontal alignment of base riser section.
                  3.        Provide smooth, semi-circular invert, same size as outlet pipe, through manhole;
                            make curve as large a radium as practical for changes in flow direction; all water
                            shall drain freely from manhole; slope floor toward invert.

         C.       Additional Risers: Install additional riser section as required. Lubricate O-rings with soap.

         D.       Repair any honeycomb areas or damaged areas as directed by the Engineer.

         E.       Backfill up to pipe grades. Connect and bed pipes using bedding material up to one foot
                  above top of pipes.

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         F.       Grout inside pipe/manhole joint.

         G.       Install manhole invert. Remove any projections and repair any voids to assure a
                  hydraulically smooth channel between pipe ends.

         H.       Install manhole adjustment rings as shown in the manhole detail.

         I.       Install manhole ring and cover. Adjust accurately to proper grade. Where manhole is to
                  be in a paved area, adjust slope to match finished surface.

3.09     ABANDONING MANHOLES

         A.       Remove top and walls of structure to a minimum of 10 feet below subgrade in paved
                  areas or 10 feet below finish grade in other areas.

         B.       Plug all pipes that are to be abandoned leaving structure using flowable mortar as per
                  Utility Trenching and Backfill..

         C.       Fill remaining structure using flowable mortar as per Section 330522 - Utility Trenching
                  and Backfill.

         D.       Place compacted earth fill over structure as required for embankment or compacted
                  backfill

3.10     TESTING AND INSPECTION

         A.       Scheduling.

                  1.        The Owner will complete the tests and will provide the project inspector with
                            results.
                  2.        The contractor can witness the tests.

         B.        Roundness testing

                  1.        The Owner shall test gravity lines for roundness by drawing a 7 1/2% deflected
                            mandrel through the pipe.
                  2         To be used on PVC and polyethylene pipes.

         C        Pressure Testing (for projects with over 200’ of new sewer piping)

                  1.        Owner shall conduct a low pressure air test per ASTM F1417.
                  2.        To be used on PVC and polyethylene pipes.
                  3.        Determine the test time required. A table of minimum test times for various pipe
                            sizes is shown below.
                  4         Owner shall plug all openings in the test section.
                  5.        If groundwater is present, air pressure shall be corrected by dividing water height
                            over pipe (ft) by 2.31 and adding this psi to test pressure.
                  6.        Add air until the internal pressure of the line is raised to 4 psig plus groundwater
                            correction. Maintain pressure for 2 minutes to allow temperature equalization.
                  7.        After pressure has stabilized between 3.5 and 4 psig, record pressure and begin
                            timed test.
                  8.        If the pressure drops more than 1.0 psig during the test time, the line has failed.
                            Contractor must resolve failure at their expense.
                  9.        Minimum Test Times


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                          Pipe Size (Inches)                               Seconds/100 ft
                                  4                                             20
                                  6                                             45
                                  8                                             75
                                  10                                           120
                                  12                                           170

         D.       Visual Inspection.

                  1.        The Owner will check the sewer piping for alignment and grade between
                            manholes or intake structures by means of lamping. If any portion of the sewer
                            system deviates from true line or grade, the Contractor shall be required to
                            correct at the Contractor’s expense.
                  2.        To be used on all pipes.
                  3.        Manhole and intake structures are to be visually examined for leaks, damage,
                            voids, porous areas, proper seals, and to verify that structure is proper size, to
                            grade and plumb.
                  4.        Contractor to repair or replace any unacceptable work at no additional cost to
                            Owner. Items that can be repaired in manholes are small visible leaks and tie
                            holes to patch.

         E.       Television Inspection.

                  1.        The Owner reserves the right to inspect the sewer lines by the use of closed
                            circuit internal television inspection..
                  2.        If defects are identified through the television inspection, both the inspection and
                            repair of defects shall be at the Contractor’s expense.
                  3.        If no defects are identified, Owner shall pay for televising.
                  4.        To be used on all pipes.

         F.       Water Flow Inspection.

                  1.        Water shall be supplied at the upstream structure and observed flowing into the
                            adjacent structure downstream. The Owner shall determine if the functionality of
                            the storm sewer is acceptable.

         G.       Water Head Test (For projects with under 200’ of sewer piping).

                  1.        Contractor shall provide a means for the owner to put 15’ head of water on the
                            new sewer pipe.
                  2.        Owner shall fill the sewer pipe with water up to 15’ above pipe invert and mark fill
                            level.
                  3.        Water shall not drop more than 6” in 2 hours. Pipe that fails this test shall be
                            inspected by excavation or TV inspection at Contractor’s expense to determine
                            cause of leak. Contractor shall repair leak as directed by owner, prior to a re-
                            test.

         H.       Trench Compaction

                  1.        Refer to Section 33 05 22 “Utility Excavation and Backfill.”




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Phase 2 - Small Animal Hospital Renovation and Addition                         SANITARY SEWER UTILITIES
Issuance #1




3.11     WASTE MANAGEMENT

         A.       Separate and dispose of waste in accordance with the Project’s Waste Management
                  Plan.



                                          END OF SECTION




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                                                  SECTION 33 40 00

                                          STORM DRAINAGE UTILITIES

1.01     SUMMARY

         A.       Utility Storm Sewers.

1.02     DESCRIPTION OF WORK

         A.        Construct storm sewers.

         B.       Reference is made to the Iowa Department of Transportation English Standard
                  Specifications for Highway and Bridge Construction and all Supplemental Specifications
                  by the term "Iowa DOT Specification Number" and /or "IM Number".

1.03      SUBMITTALS

         A.        Manufacturer's instructions for installation of pipe and appurtenances.

         B.        Construction sequence.

         C.       Catalog cuts, samples, manufacturer's data and listing of applicable standards for
                  special, unique or proposed substitute materials if requested by the Engineer.

         D.       All precast concrete structures.

         E.       Certification that materials being provided meet the requirements of these specifications
                  or that alternate materials or substitutions have received written approval of the Engineer.

         F.       Project Record Documents.

         G.       Upon requests the contractor will provide Material Certifications to the Engineer.

1.04     SUBSTITUTIONS

         A.       Use only materials conforming to these specifications unless permitted otherwise by the
                  Engineer.

         B.       Obtain written approval of the engineer for all substitutions prior to use.

1.05     DELIVERY, STORAGE AND HANDLING

         A.       Deliver only materials that fully conform to these specifications or for which submittals
                  have been provided to the Engineer and approved for use.

         B.       Store materials and handle to avoid damage. Replace any damaged materials. Remove
                  damaged materials from site.

         C.       Do not store plastic pipe, and fittings in direct sunlight




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1.06     CONFLICTS

         A.       Expose potential conflicts such as utility lines and drainage structures in advance of
                  construction. Verify elevations and locations and verify clearance for proposed
                  construction.

         B.       Complete elements of work which can affect line and grade in advance of sanitary and
                  storm sewer construction unless noted on plans.

         C.       Notify the Engineer of conflicts discovered or changes needed to accommodate unknown
                  conditions.

1.07     SPECIAL REQUIREMENTS

         A.       Stop Work: Stop work and notify the Engineer immediately if contaminated soils,
                  historical artifacts or other environmental or historic items are encountered.

         B.       Conform to local, state and federal requirements.


PART 2 - PRODUCTS

2.01     STORM SEWERS 4" - 12": (Gravity)

         A.       Polyvinyl Chloride Pipe (PVC)

                  1.        Conform to ASTM D 3034, pipe stiffness per ASTM D 2412, minimum thickness
                            Solid Wall Pipe SDR 35.

                  2.        PVC plastic in accordance with ASTM D 1784, Cell Classification 12454 B.

                  3.        Integral Bell and spigot type rubber gasket push joint fittings conforming to ASTM
                            D 3212 and ASTM F 477.

2.02     LARGE STORM SEWERS (Gravity)

         A        Reinforced Concrete Pipe (RCP) 12” to 21” diameter:

                  1.        Conform to ASTM C76.
                  2.        Class V, Wall C.
                  3.        All joints to be sealed with rubber gaskets conforming to ASTM C 443.
                  4.        Gasket to be P-4 Profile gasket..

         B        Reinforced Concrete Pipe (RCP) 24” diameter and larger:

                  1.        Conform to ASTM C76.
                  2.        Class and Wall thickness as indicated on drawings.
                  3.        All joints to be sealed with rubber gaskets conforming to ASTM C 443.
                  4.        Gasket to be P-4 Profile gasket.

         C        Polyvinyl Chloride Pipe (PVC) 12” to 24” diameter:

                  1.        To be used only for repairs of existing pipe runs as specifically directed by
                            Owner.
                  2.        15” to conform to ASTM D 3034, 18” -24” to conform to ASTM F679.


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                  3         Pipe stiffness per ASTM D 2412, minimum thickness Solid Wall Pipe SDR 35.
                  4.        PVC plastic in accordance with ASTM D 1784, Cell Classification 12454 B.
                  5.        Integral Bell and spigot type rubber gasket push joint fittings conforming to ASTM
                            D 3212 and ASTM F 477.

2.03       PE PIPE AND FITTINGS (SOLID AND PERFORATED)

         A.       Corrugated PE Drainage Pipe and Fittings NPS 4 to NPS 10 : AASHTO M 252M,
                  Type S, with smooth waterway for coupling joints. No sock shall be used with perforated
                  pipe.

                  1.        Silt tight Couplings: PE sleeve with ASTM D 1056, Type 2, Class A, Grade 2
                            gasket material that mates with tube and fittings.
                  2.        Soil tight Couplings: AASHTO M 252M, corrugated, matching tube and fittings.
                  3.        Manufacturers
                            a.     ADS Inc. (N-12 Pipe)

         B.       Corrugated PE Pipe and Fittings NPS 12 to NPS 60 : AASHTO M 294M, Type S, with
                  smooth waterway for coupling joints.

                  1.        Silt tight Couplings: PE sleeve with ASTM D 1056, Type 2, Class A, Grade 2
                            gasket material that mates with pipe and fittings.
                  2.        Soil tight Couplings: AASHTO M 294M, corrugated, matching pipe and fittings.
                  3.        Manufacturers
                            a. ADS Inc. (N-12 Pipe)

2.04     FLARED END SECTIONS

         A.       PVC Flared End Sections: PVC Flared End Sections shall be installed per manufacturer’s
                  recommendations.

2.05     FLEXIBLE COUPLINGS

         A.       Rubber Boot Connector.

                  1         Connector shall be a solid piece rubber connector with stainless steel band
                            clamps.

                  2         Connector shall be Fernco or approved equal.

2.06     LUBRICANT FOR JOINT GASKETS

         A.       Soap-based only.

         B.       DO NOT USE petroleum based lubricant.

2.07.    STANDARD MANHOLES

         A.        Concrete Manhole sections

                  1.        Precast reinforced concrete manhole sections conforming to ASTM C478, 48"
                            diameter, 5" minimum wall thickness, one cage reinforcing, minimum 0.18 square
                            inches reinforcement per linear foot of pipe wall.
                  2.        Precast integral concrete manhole bottom section and base shall not be used
                            unless explicitly allowed on drawings.


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                  3.        Joints: Flexible joint rubber ring gasket type, profile gasket or 0-ring gasket;
                            conform to ASTM C443.

                  4.        Steps: aluminum or copolymer encapsulated steel reinforcing bar spaced as per
                            detail drawing.
                  5.        Conform to standard drawings.

         B.       Pipe connections:

                  1.        Use knockouts or saw cut openings for piping connections. Precast sleeves not
                            to be used.
                  2.        Conform to standard drawings.

         C.       Frame and cover castings:

                  1.        Machined bearing surfaces. Manhole shall not have anti-rocking lugs.
                  2.        Flat gasket seal for sanitary sewers.
                  3.        Grated lid for area intakes, solid lid for sanitary manholes and non-intake storm
                            manholes.
                  4.        Note inset, recessed pick holes on solid lid, see standard detail for pick hole
                            locations.
                  5.        Manufacturer for casting with solid lid : Neenah Model R-1670-5216. No
                            substitution. FP&M # 6641.4500.
                  6.        Manufacturer for casting with grated lid : Neenah Model R-2500 or equal. FP&M
                            # 6641.4501.

         D.       Concrete adjusting rings:

                  1.        Use precast concrete adjusting rings for any grade adjustment.
                  2.        No bricks or site poured adjusting rings shall be used.

2.08.    STORM SEWER INTAKES

         A.       Curb Intake.

                  1.        Precast reinforced concrete manhole sections meeting current IDOT SW-507
                            specifications. SW-507 intakes are rectangular curb intakes with an open
                            concrete throat.
                  2.        Manhole bases shall have formed flow paths at least ½ the depth of the pipe with
                            no right angles. Remainder of base area shall slope into the trough. Bases may
                            be precast or shaped on site.
                  3.        Steps: aluminum or copolymer encapsulated steel reinforcing bar.
                  4.        Conform to standard drawings.
                  5         Casting to be solid lid with pick hole per IDOT SW-507 specifications.

         B.       Area Intake

                  1.        Use Standard ISU Manhole from Section 33 40 00.
                  2.        Use casting as indicated in Section 33 40 00.


         C.       Special Shallow intake: To be used only for in house installation or special projects.

                  1.        To be used only for intakes less than 4’ deep and specially designated.
                  2.        Modified IDOT RA-64


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                  3.        Precast reinforced concrete pipe sections - 30” diameter unless otherwise
                            specified. To meet IDOT RF-1 1500D pipe specifications. Maximum depth of 4
                            feet. There shall be no concrete ring around intake, and the outlet shall be at the
                            bottom of the manhole. This type shall only be used for intakes in grassy areas
                            with no pass through flow.
                  4.        Pipe sections to be installed bell end up.
                  5.        Casting to be bicycle safe grated lid sized to fit into 30” concrete pipe bell. 32 ¾”
                            diameter lid, no frame. Neenah Model R-4040-27G. No equal.

PART 3 – EXECUTION

3.01     EXAMINATION

         A.       Verify measurements at site; make necessary field measurements to accurately
                  determine pipe make up lengths or closures.

         B.       Examine site conditions to insure that construction operation do not pose hazards to
                  adjacent structures or facilities.

3.02     LINE AND GRADE

         A.        Install pipe to line and grade shown on plans. Set field grades to invert of pipes.

         B.       Notify the Engineer immediately if discrepancies or irregularities are discovered in line or
                  grade shown by grade takes.

         C.       Make detailed measurements as required to construct work to line and grade established
                  by line and grade hubs.

         D.       Batter Boards:

                  1.        Set grade points at 25 foot intervals at convenient offset from centerline of pipe.
                  2.        Set batter boards as necessary to construct to design line and grade.
                  3.        Provide at least three batter boards at the pipe laying area during construction as
                            check on accuracy of grades.
                  4.        Check line and grade of each pipe length with grade rod and plumb bob.

         E.       Laser Beam:

                  1.        Set laser equipment to proper line and grade from line and grade hubs.
                  2.        Check line and grade of laser at 25 foot intervals for first 100 feet and then at 50
                            foot intervals for each setup.
                  3.        Check line and grade of each pipe length.

3.03     PIPE INSTALLATION

         A.       Provide trench excavation, pipe bedding and backfill as specified in Section 33 05 22
                  Utility Trench and Backfill. Note bedding requirement of Section 33 05 22, 1.3 E for
                  sewers.

         B.       Begin at lowest point in line. Lay groove or bell end pointing upstream unless specifically
                  noted otherwise.

         C.       Prepare trench bottom to design line and grade so that only minor movement of pipe is
                  necessary after installation. Use bedding as specified on detail drawing.


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         D.       Inspect pipe for defects before carefully lowering into trench. Do not install damaged or
                  defective pipe.

         E.       Clean pipe interior and joints prior to lowering into trench. Keep pipe clean during
                  construction.

         F.       Do not lay pipe in water or on saturated soil or bedding, or allow water to rise in trench
                  around pipe, unless approved by the Engineer.

         G.       Lay pipe to design line and grade.

         H.       Provide uniform bearing for full pipe barrel length.

                  1.        Excavate bell holes as necessary for uniform support of pipe barrel on bedding
                            material.
                  2.        Do not block pipe above bedding unless controlled density fill, concrete bedding,
                            or concrete easement is to be used.

         I.       Assemble joints as specified by pipe manufacturer.

         J.       Install Fernco cap at exposed ends of pipe whenever pipe installation is not in progress.

         K.       Do not disturb installed pipe and bedding when using movable trench boxes and shields.
                  Block or anchor pipe as necessary to prevent joint displacement.

         L.       Saw cut ends of pipe at manholes and structures. Do not hammer cut or break pipe.

         M.       Provided manholes where indicated on plans and as specified under Manholes.

         N.       Correct misalignment, displacement or otherwise defective pipe by removing, relaying or
                  replacing pipe at Contractor's expense.

3.04     LOCATE WIRE SYSTEM

         A.       See Section 33 05 26 on Locate Wire System. All non-electric lines to have locate wires.

3.05     PIPE JOINTING

         A.       Joint Cleaning: Clean joint surfaces with wire brush to remove soil or foreign material
                  prior to jointing pipe

         B.        Assemble joints in accordance with pipe manufacturer's recommendations.

                  1.        Use bar and block or internal or external jointing devices or other devices as
                            recommended by pipe manufacturers.

         C.       Polyvinyl Chloride Pipe (PVC):

                  1.        Coat rubber gasket and joint with lubricant immediately prior to closing joint.

         D.       Connections Between Dissimilar Pipes:

                  1.        Use Fernco couplings.
                  2.        Where adapters or couplings are not commercially available, the Engineer may
                            authorize use of a concrete `C' collar as per IDOT.

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3.06          TOLERANCES

         A.       Horizontal and vertical alignment of each pipe length of gravity sewer lines shall not vary
                  from design lines and grade by more than 1 % of the inside diameter of the pipe or '1/4
                  inch, whichever is larger.

         B.       Tolerance allowed for gravity sewer lines only if design line and grade is sufficient to
                  prevent backslope when tolerance limits are reached.

         C.       Reverse slope on gravity pipe is prohibited. Remove and relay pipe to proper grade.

         D.       Horizontal and vertical alignment of force mains shall not vary from design line and grade
                  by more than 3 inches.

3.07          CONFLICTS

         A.       Provide temporary support for existing water, gas, telephone, power or other utilities or
                  service that cross trench.

                  1. Support rigid galvanized steel conduit when length of exposed conduit is greater than
                     8 feet.
                  2. Support PVC conduit when length of exposed conduit is greater than 4 feet

         B.       Compact backfill under existing utility crossing as specified in Utility Trench and Backfill.
                  or construct utility line supports where indicated on plans or as directed by the Engineer.

3.08     MANHOLE INSTALLATION

         A.        Subgrade Preparation:

                  1.        Undisturbed soil; Hand grade to accurate elevation.
                  2.        Disturbed soil; Machine compact to 95 percent of Standard Proctor Density and
                            hand grade to accurate elevation or install stabilization material as directed by
                            the Engineer.

         B.       Installation of Poured In Place Base:

                  1.        Bed base riser section in cement mortar.
                  2.        Assure proper vertical and horizontal alignment of base riser section.
                  3.        Provide smooth, semi-circular invert, same size as outlet pipe, through manhole;
                            make curve as large a radium as practical for changes in flow direction; all water
                            shall drain freely from manhole;
                  4.        Slope floor toward invert.

         C.       Grout inside pipe/manhole joint.

         D.       Additional Risers: Install additional riser section as required. Lubricate O-rings with soap.

         E.        Repair any honeycomb areas or damaged areas as directed by the Engineer.

         F.       Install manhole adjustment rings as shown in the manhole detail.


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         G.       Install locate wire in mortar bed between top two adjustments rings as indicated on
                  details.

         H.       Install manhole ring and cover. Adjust accurately to proper grade. Where manhole is to
                  be in a paved area, adjust slope to match finished surface.

3.09     ABANDONING MANHOLES

         A.       Remove top and walls of structure to a minimum of 10 feet below subgrade in paved
                  areas or 10 feet below finish grade in other areas.

         B.       Plug all pipes that are to be abandoned leaving structure using flowable mortar as per
                  Utility Trenching and Backfill.

         C.       Fill remaining structure using flowable mortar as per Section 02502 - Utility Trenching
                  and Backfill.

         D.       Place compacted earth fill over structure as required for embankment or compacted
                  backfill

3.10     TESTING AND INSPECTION

         A.       Scheduling.

                  1.        The Owner will complete the tests and will provide the project inspector with
                            results.
                  2.        The contractor can witness the tests.

         B.        Roundness testing

                  1.        The Owner shall test gravity lines for roundness by drawing a 7 1/2% deflected
                            mandrel through the pipe.
                  2         To be used on PVC and polyethylene pipes.

         C.       Visual Inspection.

                  1.        The Owner will check the sewer piping for alignment and grade between
                            manholes or intake structures by means of lamping. If any portion of the sewer
                            system deviates from true line or grade, the Contractor shall be required to
                            correct at the Contractor’s expense.
                  2.        To be used on all pipes.
                  3.        Manhole and intake structures are to be visually examined for leaks, damage,
                            voids, porous areas, proper seals, and to verify that structure is proper size, to
                            grade and plumb.
                  4.        Contractor to repair or replace any unacceptable work at no additional cost to
                            Owner. Items that can be repaired in manholes are small visible leaks and tie
                            holes to patch.

         D.       Television Inspection.

                  1.        The Owner reserves the right to inspect the sewer lines by the use of closed
                            circuit internal television inspection.
                  2.        If defects are identified through the television inspection, both the inspection and
                            repair of defects shall be at the Contractor’s expense.
                  3.        If no defects are identified, Owner shall pay for televising.

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                  4.        To be used on all pipes.

         E.       Water Flow Inspection.

                  1.        Water shall be supplied at the upstream structure and observed flowing into the
                            adjacent structure downstream. The Owner shall determine if the functionality of
                            the storm sewer is acceptable.

         F.       Trench Compaction

                  1.        Refer to Section 31 23 00 “Utility Excavation and Backfill.”

3.11       WASTE MANAGEMENT


         A.       Separate and dispose of waste in accordance with the Project’s Waste Management
                  Plan.



                                                  END OF SECTION




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