Irrigation Systems - DOC by IB9A1L8

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									MD ANDERSON Project No. XX-XXXX                                        MD ANDERSON PROJECT NAME
A/E Name                                                                           Issue Description
A/E Project No.                                                                     Month, 00, 0000

SECTION 32 80 00 - IRRIGATION SYSTEMS


PART 1 - GENERAL

1.01   RELATED DOCUMENTS

       A. Drawings and general provisions of the Contract, including General and Supplementary
          Conditions and Division 01 Specification Sections, apply to this Section.

       B. Specifications throughout all Divisions of the Project Manual are directly applicable to this
          Section, and this Section is directly applicable to them.

1.02   SUMMARY

       A. This Section specifies the requirements for providing the Irrigation System as indicated on the
          Drawings and/or electronic files such as .dwg, pdf, etc.

       B. Contractor shall provide Irrigation System as a complete system including but not limited to:
          heads, valves, valve boxes, control wire splice boxes, control wiring, electric controller, piping
          circuits, and all accessories, including electric power source coordination and installation.

1.03   QUALITY ASSURANCE

       A. Available Manufacturers - Subject to compliance with specified requirements, manufacturers
          offering products which may be incorporated in the work are included in the specifications or
          denoted on the Drawings, and/or electronic files such as .dwg, pdf, etc.

       B. Installation of Irrigation System shall be performed under the direction and supervision of a
          currently licensed State of Texas Irrigator with not less than 5 years of direct design and
          installation experience in this type of work.

       C. Reference Standards Applicable to this Section:

           1. ANSI: American National Standards Institute

               a. Z55.1: Gray Finishes for Industrial Apparatus and Equipment

           2. ASTM: American Society for Testing and Materials

               a. B88: Specifications for Seamless Copper water tube.

               b. D 1785: Specifications for Poly Vinyl Chloride (PVC) Plastic Pipe, Schedules 40, 80,
                  and 120.

               c. D 2241: Specification for Poly Vinyl Chloride (PVC) Pressure-Rated Pipe (SDR
                  Series)

               d. D 2466: Specification for Poly Vinyl Chloride (PVC) Plastic Pipe Fittings, Schedule 80

               e. D 2564: Specification for Solvent Cements for Poly Vinyl Chloride (PVC) Plastic Pipe
                  and Fittings

               f. F 690: Practice for Underground Installation of Thermoplastic Pressure Piping
                  Irrigation Systems

           3. AWWA: American Water Works Association

 The University of Texas                                                          IRRIGATION SYSTEMS
 MD ANDERSON Cancer Center                                                                    32 80 00
 MS042611                                                                                      1 OF 15
MD ANDERSON Project No. XX-XXXX                                       MD ANDERSON PROJECT NAME
A/E Name                                                                          Issue Description
A/E Project No.                                                                    Month, 00, 0000

               a. C 500: Gate Valves, 3 inches through 48 inches NPS, for Water and Sewage
                  Systems

               b. C 506: Backflow Prevention Devices, Reduced Pressure Principle and Double
                  Check Valve Types

           4. ICC: International Code Council

               a. IBC: International Building Code

               b. IPC: International Plumbing Code

           5. NEMA: National Electrical Manufacturer's Assoc.

               a. 250: Enclosures for Electrical Equipment (1000 Volts Maximum)

           6. NFPA:     National Fire Protection Association

               a. NFPA 70 (NEC): National Electric Code

           7. NSF:     National Sanitation Foundation

               a. No. 14 - Plastic Piping System Components and Related Materials

           8. Chapter 344 – Texas Water Code-Regulations governing irrigation

           9. Chapter 290 – Texas Water Code-Regulations governing backflow installation and
              inspections

           10. Chapter 37 Texas Water Code- Regulations governing irrigation licensing

           11. Chapter 1903 Texas Water Code – Regulations governing irrigation licensing.

       D. The contractor shall maintain an “As Built” file. This record or log shall include all changes
          and modifications to the original plan on a daily basis. Upon completion of the project, these
          changes contained in the “as built file” will be incorporated into the design, notes, etc on all
          of the designs, documents, etc, and will be provided to the Owner in the form of a completed
          as built design.

       E. This record or log must be maintained on the job site during normal business hours.

       F. The Contractor shall provide a completed “As Built” Drawing to the Owner at the completion
          of the project. This “As Built” Drawing shall be in the form of paper copy as well as a .DWG
          formatted CD.

1.04   SUBMITTALS

       A. SYSTEM DESIGN




 The University of Texas                                                        IRRIGATION SYSTEMS
 MD ANDERSON Cancer Center                                                                  32 80 00
 MS042611                                                                                    2 OF 15
MD ANDERSON Project No. XX-XXXX                                      MD ANDERSON PROJECT NAME
A/E Name                                                                         Issue Description
A/E Project No.                                                                   Month, 00, 0000

         1. The Irrigation System design shall be a complete Irrigation System including but not
            limited to: heads, valves, valve boxes, control wire splice boxes, control wiring, electric
            controller, piping circuits, and all accessories, including electric power source
            coordination and installation. This design shall be scaled to a 1:20 scale and “sealed” by
            either a Texas Licensed Irrigator or a Landscape Architect currently licensed in the State
            of Texas. This design shall be provided to MD Anderson, Grounds & Landscape
            Department. (For clarity purposes the term “Grounds and Landscape Department” shall
            be used to indicate the Owner.)       This design shall be provided on paper following
            generally accepted industry standards utilizing a title block, page numbers, page
            descriptions, and all other pertinent data relating to the Irrigation System. The design
            shall include the following:

         2. A hydraulic calculation for the worst case scenario irrigation head in the worst case
            irrigation zone shall be provided. This calculation shall provide the “actual head pressure”
            for this identified sprinkler head and shall be representative for the system.

         3. A hydraulic calculation showing the “design pressure” for the worst case scenario
            irrigation head in the worst case irrigation zone shall be provided.

         4. The licensed irrigator or Landscape Architect shall affix their seal over these hydraulic
            calculations.

         5. The manufacturer’s recommended pressure for each product used shall be noted on the
            design and hydraulic section.

         6. Location of Heads - Represent design location as accurately as possible. Make minor
            adjustments on site with approval of the irrigation designer or Landscape Architect as
            necessary to ensure consistent and even spacing where applicable. The goal for the
            design is 100% coverage, head to head spacing, and matched precipitation rate (MPR)
            application. Set all heads minimum 4” from back of curb and 4" from edge of concrete
            walls.

         7. The design shall utilize a “center fed” valve configuration and progressive pipe sizing of
            all irrigation lines. If appropriate, the use of a looped main is preferred. When a looped
            main is used, there shall be independent isolation valves at each leg of the looped main.

         8. The Irrigation System design shall comply with a maximum velocity of 5 linear feet per
            second through the discharge piping of the Irrigation System.

         9. The system shall have the landscape beds and turf on separate zones. Rotors and spray
            shall also be on different zones. If drip is used, it shall utilize pressure compensation,
            pressure regulation, and pressure filtration.

         10. The design shall include a sheet(s) titled “Typical Exploded Views”. This sheet shall
             show detail of specific installation applications. All major component utilized on the
             project shall have a “Typical Exploded View”

         11. A statement on the irrigation designer or Landscape Architect’s letterhead shall be
             included that indicates the irrigation design provided to the Owner is in 100% compliance
             with all prevailing city codes, ordinances, and the TCEQ standards, rules, and
             regulations. In addition, the document will contain the seal of either the licensed irrigator
             or the Landscape Architect.




The University of Texas                                                         IRRIGATION SYSTEMS
MD ANDERSON Cancer Center                                                                   32 80 00
MS042611                                                                                     3 OF 15
MD ANDERSON Project No. XX-XXXX                                       MD ANDERSON PROJECT NAME
A/E Name                                                                          Issue Description
A/E Project No.                                                                    Month, 00, 0000

           12. Submit an ET (Evapotranspiration) based schedule indicating length of time each valve is
               to be open to produce a given amount of precipitation for the ET value of July. In
               addition, submit the recommended monthly adjustment rates in percentages for the ET of
               the other eleven months. Include any schedules deemed appropriate for any “watering
               windows” that may be imposed by the Authority Having Jurisdiction (AHJ) and/or
               requested by the Owner.

       B. Product Data

           1. Submit manufacturer's technical data, specifications, installation instructions and all shop
              drawings of the sprinkler heads, automatic valves, controllers, backflow preventers,
              connections, details, and related items to the Grounds and Landscape Department.

           2. Submit the manufacturer’s operation instructions for all applicable irrigation components.

           3. Submit maintenance instructions on all items requiring manufacturer's standard detail
              submittal.

       C. Spares and Special Tools

           1. Provide Owner with 2 spare sprinkler heads of each size and type. In addition, see
              Section 2.17B.

       D. Water Tap Connections

           1. All fees, permits, and costs associated with the installation of the landscape irrigation
              water meter(s) shall be the responsibility of the Contractor unless otherwise directed by
              the Owner. The Owner will be responsible for any deposits dictated by the AHJ.

       E. Water

           1. Potable water to be supplied by Owner. Contractor shall make provisions for all
              connections required.

       F. Permits and Inspections

           1. Copies of all required permits and inspections and their associated fees shall be part of
              this contract and are the responsibility of the Contractor. A copy of all inspections shall
              be forwarded to the University of Texas, MD Anderson Grounds and Landscape
              Department.

1.05   PRODUCT DELIVERY AND HANDLING

       A. Materials, where appropriate, shall be delivered in manufacturer's unopened packaging
          labeled to indicate manufacturer's name and product identification. Insure that packaging
          and labeling remain intact until installation. Materials shall be stored protected from the
          elements, including direct sunlight.

       B. Pipes shall be handled so as to prevent being damaged and to maintain their straightness.
          Pipe ends shall be wrapped. Pipes shall be stored on beds the full length of the pipes.
          Damaged or dented pipes or fittings shall not be used.

       C. At no time will pipe joints other than swing joints; be accepted at lengths that are less than 20
          feet in length.




 The University of Texas                                                         IRRIGATION SYSTEMS
 MD ANDERSON Cancer Center                                                                   32 80 00
 MS042611                                                                                     4 OF 15
MD ANDERSON Project No. XX-XXXX                                         MD ANDERSON PROJECT NAME
A/E Name                                                                            Issue Description
A/E Project No.                                                                      Month, 00, 0000

1.06   DEFINITIONS

       A. Irrigation Main - Irrigation main is the piping from the water source(s) to control valves.
          Irrigation main is that pipe which is on the pressure side of irrigation control valves. This
          definition shall include looped mains and sub-looped mains.

       B. Irrigation Lateral Lines - Irrigation lateral line is the piping from the control valves to the
          irrigation heads. Lateral line is that pipe which is on the non-pressure side of irrigation control
          valves.

PART 2 - PRODUCTS

2.01   PIPES

       A. Markings - Thermoplastic pipes shall be marked in accordance with ASTM D 1785 and ASTM
          D 2241 as applicable and shall bear the NSF mark in accordance with NSF 14.

       B. Irrigation Main Pipe - ASTM D 2231, PVC, 1120 or 1220, Schedule 40. or Class 200.

       C. Irrigation Lateral Line Pipe

           1. Pipes 3/4 inch diameter and larger: ASTM D 2231, PVC, 1120 or 1220, SDR 21.0, 200
              PSI

           2. Pipes 1/2 inch diameter: ASTM D 2241, PVC, 1120 or 1220, SDR 13.5, 315 PSI

       D. Copper Tubing - ASTM B 88, Type K

2.02   FITTINGS FOR SOLVENT WELDED JOINTS

       A. Schedule 40: ASTM D 2466

       B. Schedule 80: ASTM D 2467

2.03   SOLVENT CEMENT FOR SOLVENT WELDED JOINTS

       A. IPS Weld-On PVC Cement: IPS Corporation, 455 West Victoria Street, Compton, Ca 90220;
          1-800-421-2677.

           1. Weld-On 700 for PVC pipe up to 4” and /or Weld-On 710 for PVC pipe up to 2”.

           2. In the event PVC pipe is greater than 4” then a Weld-On 704 series “medium” body shall
              be used.

       B. IPS Weld-On Primer: IPS Corporation, 455 West Victoria Street, Compton, Ca 90220; 1-800-
          421-2677.

           1. Weld-On P-68 or P-70 primer shall be used for surface preparation for all PVC pipe and
              fittings prior to cement applications.

2.04   FITTINGS FOR THREADED JOINTS

       A. ASTM D 2466, PVC, Schedule 80.

2.05   SEALANT FOR THREADED JOINTS UNDER CONSTANT PRESSURE

       A. No liquid Teflon or “pipe dope” shall be used on any threaded electric irrigation control valve.


 The University of Texas                                                          IRRIGATION SYSTEMS
 MD ANDERSON Cancer Center                                                                    32 80 00
 MS042611                                                                                      5 OF 15
MD ANDERSON Project No. XX-XXXX                                       MD ANDERSON PROJECT NAME
A/E Name                                                                          Issue Description
A/E Project No.                                                                    Month, 00, 0000

       B. A high quality MIL-SPEC (MIL-T-27730) Teflon tape shall be used for threaded electric
          irrigation control valves.

       C. All other types of threaded joints under constant pressure may use RECTOR SEAL LIQUID
          TEFLON by Rector Seal Corp., 2830 Produce Row, Houston, Texas 77023, (713) 928-6423,
          or approved equal.

2.06   SLEEVES UNDER PAVING FOR CONTROL WIRE AND IRRIGATION LINES

       A. ASTM D 2466, PVC, Schedule 40, sized as shown on Drawings.

       B. In the event the sleeve is not shown on plan or an additional sleeve is to be installed, the
          sleeve shall be at a minimum two (2) pipe sizes larger than the pipe that is to be routed
          through the sleeve.

       C. For sleeves that are to be used specifically for control wires only, the sleeve shall be a 1-1/2”
          sleeve

       D. All sleeves shall extend a minimum of 12” beyond the obstacle that was sleeved.

       E. All sleeves shall be marked and located on the “as built plan” by one of the methods listed
          below:

           1. A minimum of two measurements from two known and fixed positions that terminate at
              the end of the sleeve.

           2. A GPS (Global Positioning System) fix in degrees, minutes, and seconds for the
              longitude and latitude location of the end of the sleeve.

       F. All sleeves shall have an identification marker installed in the concrete at the point where the
          sleeve is located. These markers shall be Berntsen Survey markers as provided by Berntsen
          International Inc., P.O. Box Madison, WI 53708-8670. Telephone number: 800-356-7388

           1. The markers shall be a 3 ½” Aluminum domed concrete marker, part number C-35-D as
              per Berntsen International Inc.

           2. The markers shall have at the minimum, the following information stamped on them: MD
              Anderson…….Irrigation Sleeve……..Sleeve Size in inches

           3. Marker layout shall be approved by MD Anderson, and Grounds and Landscape
              Department prior to placing final order for the markers.

           4. The markers shall be installed as per the manufacturer’s specifications.

2.07   IRRIGATION SPRINKLER HEADS

       A. All rotor and spray sprinkler heads and all landscape irrigation drip line shall be provided by
          Rain Bird, 6991 E. South point Road, Tucson, As, 85706. Telephone 520-741-6100 unless
          specifically authorized by MD Anderson, Grounds and Landscape Department.

       B. Spray Heads

           1. Spray heads shall be Rain Bird 1800 series sprinkler heads with the height as indicated
              on the design or design legend. Under no conditions will an 1802 series sprinkler head
              be installed.

           2. The nozzles shall be from the “MPR” series unless otherwise indicated on the design.

 The University of Texas                                                         IRRIGATION SYSTEMS
 MD ANDERSON Cancer Center                                                                   32 80 00
 MS042611                                                                                     6 OF 15
MD ANDERSON Project No. XX-XXXX                                       MD ANDERSON PROJECT NAME
A/E Name                                                                          Issue Description
A/E Project No.                                                                    Month, 00, 0000

          3. All 1800 series sprinkler heads shall have filters installed.

          4. SAM-PRS (Seal-A-Matic check valve and in-stem pressure regulation) sprinkler heads
             shall be installed on all projects where the turf area is adjoined by a pedestrian walk path.
             They are not required in areas other than low drainage or areas that are specifically
             called for in the design. All other areas will use the standard 1800’s as specified.

          5. If adjustments of radius are required on a specific design that reduces the radius of a
             given nozzle by more than 25%, then a Rain Bird PCS (Pressure Compensating Screen)
             with the appropriate color shall be installed.

          6. All sprinklers shall be connected to irrigation lateral lines by “swing joints”. These swing
             joints shall be constructed via flexible PVC with a street elbow on one end and a coupler
             on the other end. These constructed swing joints shall be solvent welded with “hot glue”
             and shall be constructed at least 24 hours prior to installation.

          7. The nozzles on pop-up spray head body shall be as shown on Drawings and shall be
             capable of covering the radius as designated on Drawings.

      C. Rotor Heads

          1. Rotor heads shall be from the Rain Bird product line. When the site conditions permit,
             Rain Bird 5000 series rotor heads with MPR nozzles shall be used. When site conditions
             dictate larger diameter rotors, the designer shall utilize Matched Precipitation Rate design
             concepts in the nozzle selection.

      D. Drip Irrigation

          1. Drip irrigation products shall be from the Rain Bird product line.

          2. All use of drip irrigation that is incorporated into the design shall utilize the following
             items:

              a. All drip applications shall utilize “Pressure Compensation” type products and a uniform
                 regulated pressure.

              b. All drip applications shall utilize a pressure regulator incorporated into the valve
                 configuration.

              c. All drip applications shall have air/vacuum relief valves and flush flow valves installed
                 as per manufactures specifications.

              d. All drip applications shall incorporate a Rain Bird Automatic Filter kit with each section
                 of drip. The drain line from this filter shall be routed to either a drain approved by the
                 Owner, or to an area where it can be discharged via an impact type head with a large
                 nozzle. Under no circumstances shall the drain line be “day lighted”. The stainless
                 steel mesh screen shall be a 150 micron mesh. The valve configuration shall be sized
                 according to the manufacturer’s specifications.

          3. When site conditions permit, utilize the Rain Bird Landscape Drip line. The spacing
             standards shall be:

              a. 12” spacing – sandy soil conditions

              b. 18” spacing – loam soil conditions



The University of Texas                                                           IRRIGATION SYSTEMS
MD ANDERSON Cancer Center                                                                     32 80 00
MS042611                                                                                       7 OF 15
MD ANDERSON Project No. XX-XXXX                                     MD ANDERSON PROJECT NAME
A/E Name                                                                        Issue Description
A/E Project No.                                                                  Month, 00, 0000

               c. 24” spacing – clay soil conditions

               d. Design preference is for use of uniform rows, centers fed zones, and maximum
                  spacing not exceeding the manufacturer’s specifications.

           4. The drip shall be designed and installed as per the manufacturer’s recommendations.

2.08   ELECTRIC REMOTE CONTROL VALVES

       A. Remote control irrigation zone valves shall be manufacutred by Rain Bird, 6991 E. Southpoint
          Road, Tucson, Az, 85706. Telephone 520-741-6100. These valves will be Rain Bird PEB
          Normally Closed (N.C.) series valves with the size shown on the design.

       B. A Normally Open (N.O.) master valve shall be used with the RainMaster DX2 controller. This
          master valve shall be as per RainMaster specification.

2.09    REMOTE CONTROL VALVE TAGS

       A. Remote control valve tags shall be plastic tags with plastic wire to attach numbered tag to
          valve.

2.10   VALVE BOX

       A. Valve boxes shall be heavy duty plastic 17 inch by 11-3/4 inch by 12 inch depth, black with
          black cover. Valve box shall be non-hinged, bolt type by Carson Industries, Inc., 1925 Street,
          LaVerne, CA 91750, (213) 732-6265, or approved equal.

2.11   CONTROL WIRE SPLICE BOXES

       A. Control wire splice boxes shall be heavy duty plastic 10 inch diameter by 10-1/4 inch deep,
          black with black cover, No. 910-12B, by Carson Industries, Inc. or approved equal.

2.12   GRAVEL BACKFILL

       A. Gravel backfill for valve boxes and control wire splice boxes shall be 3/8 inch diameter pea
          gravel.

2.13   ELECTRIC CONTROLLER(S)

       A. Controllers shall be RainMaster DX2 Evolution by RainMaster Irrigation Systems, 3910-B
          Royal Avenue, Simi Valley, California 93063 (805)527-4498

           1. The DX2 Evolution controller shall be used on all projects unless otherwise specified by
              MD Anderson, Grounds and Landscape Department.

           2. The DX2 Controllers shall be housed in wall mounted Stainless Steel cabinets provided
              by RainMaster unless otherwise specified.

           3. In areas where a wall mount controller is not feasible a Stainless Steel Pedestal mount
              controller will be used.

           4. All DX2 controllers shall have the lighting protection kit installed and shall be grounded
              and installed as per manufacturer’s specifications.

           5. Coordinate with the Owner as to the communication source for the connectivity to the
              Central Control system.


 The University of Texas                                                       IRRIGATION SYSTEMS
 MD ANDERSON Cancer Center                                                                 32 80 00
 MS042611                                                                                   8 OF 15
MD ANDERSON Project No. XX-XXXX                                          MD ANDERSON PROJECT NAME
A/E Name                                                                             Issue Description
A/E Project No.                                                                       Month, 00, 0000

               a. Once the communications source is determined, the appropriate communications
                  equipment shall be provided as specified under the “communications” specifications.

           6. The number of zones per each controller shall be determined by the irrigation designer or
              Landscape Architect based on site conditions, water sources, watering windows, and
              input from the Owner. All controllers specified shall have a capacity to add an additional
              two zones of irrigation to the number of zones needed without exceeding the controller’s
              capacity.

           7. Install the appropriate sized flow sensor as per Rainmaster installation specifications.

           8. A master valve shall be used in conjunction with the DX2 controller.      The master valve
              shall be a normally open (N.O.) valve as specified by RainMaster.

       B. Equipment Associated with RainMaster Central Control

           1. Master Valve

               a. A master valve shall be installed on all Irrigation Systems that utilize a DX2 Controller
                  unless otherwise specified by the Owner. The master valve shall be as specified by
                  RainMaster.

           2. Flow Sensor

               a. The flow sensor shall be a Rainmaster flow sensor sized as per the RainMaster
                  specifications for the main line pipe size and flow.

               b. A DX-Flow sensing circuit board will be required for flow sensors

               c. Each flow sensor will require EV-CAB-SEN flow sensing cable.             The maximum
                  allowable distance is 2000’ linear feet.

           3. Communications

               a. The appropriate type of communications equipment, including cards, wire, and
                  devices shall be specified to correspond with each controller that is used. The
                  Contractor shall coordinate with the Owner as to the connectivity of each device and
                  the existing Central Control software.

           4. Rain Switch

               a. A wireless rain switch by Hunter shall be installed as per manufacturer’s specifications
                  utilizing the normally open (N.O.) lead. A conventional hard wire switch will be used
                  when wireless is not compatible. Coordinate with the RainMaster distributor to obtain
                  the required interface kit- “DXCID-KIT”.

2.14   IRRIGATION CONTROL WIRE

       A. Wire: Solid copper wire, NEC type UF, UL listed for direct burial in ground. Minimum size:
          No. 14 AWG. No. 12 UF for runs over 1000 LF.

       B. The wires for all irrigation control valves shall be red in color.

       C. The common wires for all irrigation control valves shall be white in color.




 The University of Texas                                                         IRRIGATION SYSTEMS
 MD ANDERSON Cancer Center                                                                   32 80 00
 MS042611                                                                                     9 OF 15
MD ANDERSON Project No. XX-XXXX                                      MD ANDERSON PROJECT NAME
A/E Name                                                                         Issue Description
A/E Project No.                                                                   Month, 00, 0000

       D. Splicing Material shall be King Wire Connectors, Tan in color, by King Innovation, 3801 Lloyd
          King Drive, St. Charles, Mo 63304. A new King wire connector shall be used for every
          electrical connection

       E. An extra “transient” or spare wire shall be installed. This “transient” wire shall be yellow in
          color and will be labeled as spare in the controller.

2.15   BACKFLOW PREVENTER

       A. Backflow Preventers shall be bronze and copper, pressure vacuum breaker (PVB) assembly
          Febco model 765 or reduced pressure device (RPZ) model 825 YA by Febco Sales, Inc.
          (CMB Industries), P.O. Box 8070, Fresno, CA 93747, (209) 252-0791, or approved equal.
          Size as per Drawings.

       B. The backflow devices shall be installed in accordance with the manufacturer, TCEQ, and
          local codes and standards.

       C. The backflow device(s) shall be installed in an enclosure by StrongBox, V.I.T. Products, Inc.,
          800.729-1314.

           1. The enclosure shall be the “Smooth Touch Vandal Resistant Backflow Enclosure” model
              sized as per the backflow device. It shall be powder coated the standard dark green
              color.

           2. Each enclosure shall include a “PolarBearier” insulated blanket sized to fit the backflow
              device.

           3. Each enclosure shall be installed on Contractor built enclosure pad. The holes for the
              irrigation lines shall be large enough in diameter so as to accommodate foam insulation
              wrap around the irrigation pipe so as to protect against freeze and chafing. There shall
              be a drainage area so as to alleviate any standing water inside the enclosure.

               a. The pad shall be adequately anchored and shall have the concrete sleeved where the
                  irrigation lines protrude through the concrete.

               b. The pad shall have pea gravel no larger than 3/8” diameter installed in the Contractor
                  installed drainage hole in the bottom of the pad.

               c. The pad shall have a mechanism installed that will allow the enclosure pad to lock the
                  enclosure to the pad.

               d. The Owner will provide padlocks to the Contractor. The Contractor shall ensure all
                  enclosures are locked.

               e. The pad shall be installed in locations as per the manufacturer’s specifications in a
                  location approved by M D Anderson, Grounds and Landscape Department.

2.16   GATE VALVES

       A. Gate Valves shall comply with AWWA C-500. Valves up to 3 inch size shall be 125 pound,
          bronze body, bronze-mounted, non-rising stem with solid wedge gates. The size shall
          correspond to the main line they are attached to.




 The University of Texas                                                       IRRIGATION SYSTEMS
 MD ANDERSON Cancer Center                                                                  32 80 00
 MS042611                                                                                  10 OF 15
MD ANDERSON Project No. XX-XXXX                                     MD ANDERSON PROJECT NAME
A/E Name                                                                        Issue Description
A/E Project No.                                                                  Month, 00, 0000

2.17   QUICK COUPLING VALVES

       A. Quick coupling valves shall have heavy duty brass construction, durable thermoplastic rubber
          cover, stainless steel internal valve spring, two-piece body design. These valves shall be
          sized as 1”.

       B. Provide four valve keys with 3/4 inch swivel hose ells.

       C. The Quick Coupling valves shall be installed as per the “typical exploded view” found on the
          detail sheets. The 1” size shall supersede any sizing that may be shown on an “exploded
          view”.

       D. Coordinate location of the Quick Coupling valves with M D Anderson, Grounds and
          Landscape Department.

PART 3 - EXECUTION

3.01   TRENCHING AND BACKFILLING

       A. General - Contractor shall comply with Division 31 of these Specifications. Excavate straight
          and true with bottom uniformly sloped to low points. Protect existing lawns and plantings.
          Remove and replant as necessary to complete installation. Replace damaged lawn areas
          and plants with new products to restore to existing installation's original condition.

       B. Minimum Cover - Provide 18 inch minimum cover over top of installed irrigation main piping.
          Provide 12 inch minimum cover over top of installed irrigation lateral line piping. Provide 2
          inches of earth between parallels and wire. Parallels shall be laid side-by-side, not stacked.

       C. Backfill - Backfill with clean material from excavation after obtaining Landscape Architect's
          approval. Remove organic material, as well as rocks and debris larger than 1 inch in
          diameter. Place acceptable backfill in 6 inch lifts and water jet all trenches.

       D. Existing Lawns - Where trenching is required across existing lawns, (or in event of changes
          or repairs after new lawn has been established), uniformly cut strips of sod 6 inches wider
          than trench. Remove sod in rolls of suitable size for handling and keep moistened until
          replanted.

           1. Backfill trench to within 6 inches of finished grade and compact.       Continue fill with
              acceptable topsoil and compact to bring sod even with existing lawn.

           2. Replant sod within 2 days after removal, roll and water generously.

           3. Resod and restore to original condition all sod areas not in healthy condition equal to
              adjoining lawns 30 days after replanting.

3.02    INSTALLATION

       A. General - Unless otherwise indicated, Contractor shall comply with requirements of the
          governing International Plumbing Code and Chapter 344 of the Texas Water Code. Verify all
          applicable irrigation codes.

       B. Pipes

           1. Piping Mains and Laterals - Lay out sprinkler mainlines and perform line adjustments and
              site modifications to laterals prior to excavation. Lay pipe on solid subbase, uniformly
              sloped without humps or depressions.


 The University of Texas                                                       IRRIGATION SYSTEMS
 MD ANDERSON Cancer Center                                                                  32 80 00
 MS042611                                                                                  11 OF 15
MD ANDERSON Project No. XX-XXXX                                      MD ANDERSON PROJECT NAME
A/E Name                                                                         Issue Description
A/E Project No.                                                                   Month, 00, 0000

         2. PVC Pipe Assembly

             a. Cut PVC pipe, square and de-burr. Use PVC pipe cutter when possible. Clean pipe
                and fittings using primer as recommended by the PVC pipe manufacturer. Use purple
                tinted primer to aid in visual inspection.

             b. Apply a thin even flow coat of PVC solvent cement to the pipe first, then the inside of
                the fitting. Utilize the appropriate size applicator and the correct temperature range of
                solvent weld material for the size of the pipe. Cure joints as recommended by the
                manufacturer and keep pipe and fitting out of service during curing period. Construct
                watertight joints equal or greater in strength than the pipe. Do not tap pipe at fittings.

         3. Install plastic pipe in dry weather, when temperature is above 40 degrees F. and in
            accordance with manufacturer's written instructions. Allow joints to cure at least 24 hours
            at temperature above 40 degrees F. before testing.

         4. Plastic pipe shall be snaked in the trenches in a manner to provide for expansion and
            contraction as recommended by pipe manufacturer.

      C. Sleeves Under Paving - The majority of sleeves under paving are existing as shown on
         Drawings. Where boring is required for new sleeves (refer to Drawings), it shall be a "wet
         bore." Install sleeves 12" beyond edge of pavement. Perform trench and backfill in
         accordance with these specifications.

      D. Irrigation Heads

         1. Flush irrigation lines with full head of water and install heads after hydrostatic test is
            completed.

         2. Install heads at manufacturer's recommended heights. Activate the zone valve and flush
            out the heads.

         3. Locate part-circle heads to maintain a minimum distance of 4 inches from walls and 4
            inches from other boundaries, unless otherwise indicated.

         4. Check for uniformity of coverage and pattern correctness. Adjust for 100% coverage
            where required.

         5. Install nozzles as indicated on the design.

         6. Adjust arcs and radius at the stated manufacturer’s pressure. Adjust the flow control
            valve until this pressure is obtained at the last head on each zone.

      E. Electric Remote Control Valves

         1. Adjust automatic control valves to provide flow rate at rated operating pressure required
            for each irrigation section.

         2. Install valves in valve boxes, arranged for easy adjustment and removal. Locate valves
            to ensure ease of access for maintenance such that no physical interference with other
            elements of the project exists.

         3. Install a 3’ expansion coil at each valve.




The University of Texas                                                         IRRIGATION SYSTEMS
MD ANDERSON Cancer Center                                                                    32 80 00
MS042611                                                                                    12 OF 15
MD ANDERSON Project No. XX-XXXX                                       MD ANDERSON PROJECT NAME
A/E Name                                                                          Issue Description
A/E Project No.                                                                    Month, 00, 0000

      F. Remote Control Valve Tags - One Remote Control Valve Tag shall be attached to stem of
         each electric remote control valve. Tags shall be numbered sequentially. Numbers shall
         correspond to station numbers and controller numbers. Provide tags and corresponding
         numbers for wires pulled for future valves.

      G. Valve Boxes - Install valve boxes to cover electric remote control valves. Top of valve box
         shall be flush with finished grade. Bury minimum 4 bricks under base of each box as support.

      H. Control Wire Splice Boxes - Install control wire splice box to cover any splice in control wire.
         Top of valve box shall be flush with finished grade. Bury minimum 4 bricks under base of
         each box as support. Install control wire splice box to cover wires pulled for future valves.

      I.   Gravel Backfill - Backfill valve boxes and control wire splice boxes with gravel, minimum 6
           inch depth.

      J.   Electric Controller

           1. Controllers shall be fully grounded as per the manufacturer’s specifications.

           2. Connect remote control valves to controller in clockwise sequence to correspond with
              stations 1, 2, 3, successively.

           3. Provide M D Anderson, Grounds and Landscape Department with a size reduced copy of
              the irrigation plan.

           4. Provide two keys to Owner. Keys to be matched with existing controller key locking
              mechanisms.

           5. Power to Controller & Locations: Locations shown on plan for controllers is approximate.
              Final location shall be determined on site by Owner. Contractor shall supply 120 VAC to
              controller from adjacent existing power sources. Follow local governing codes in
              electrical work.

           6. Take an ohm reading on all irrigation electric control valves and spare wiring prior to
              connection to the controller. Note the ohms readings on the “As Built Drawing”

      K. Irrigation Control Wires

           1. Provide 24 volt system for control of automatic circuit-section valves of underground
              Irrigation System. Provide unit capacity to suit number of circuits indicated.

           2. Install control wires with irrigation mains and laterals in common trench where possible.
              Lay control wires neatly together to side of pipe. Provide 3’ expansion coils at valves,
              corners, bores and snake wire in trench to allow for contraction. Tape wires in bundles at
              10 foot intervals. Line splices will be allowed on runs of 500 Ft. or more. Splices shall be
              made and placed in control wire splice boxes.

           3. Common ground wire shall be white. No other wires shall be white.

           4. Supply one extra wire, for each direction of run, to valve which is located the greatest
              distance from the controller. Extra wire shall be yellow and labeled as spare in the
              controller.

           5. Color of wire from controller to control valve shall be consistent to each valve. Red shall
              be used for the zone valves.



The University of Texas                                                         IRRIGATION SYSTEMS
MD ANDERSON Cancer Center                                                                    32 80 00
MS042611                                                                                    13 OF 15
MD ANDERSON Project No. XX-XXXX                                       MD ANDERSON PROJECT NAME
A/E Name                                                                          Issue Description
A/E Project No.                                                                    Month, 00, 0000

           6. Provide 12 inch long expansion loop within 3 feet of each wire connection and splice on
              runs of wire 100 feet or longer.

       L. Backflow Preventers

           1. Make required connection to water supply according to local codes and manufacturer's
              written instructions.

           2. Install pressure type backflow devices at required grade in accordance with the local
              Plumbing Code. Exposed mainline and mainline risers above PVC pipe main elevation
              shall be copper. Install a brass union in the riser on the upstream and downstream of the
              device.

           3. Install the “StrongBox” and insulation blanket as per manufacturer’s recommendations.

           4. Provide an isolation valve (gate valve) prior to the PVB. Install a valve box as per
              specifications over the valve. Locate the valve on the as built drawings utilizing one of
              the following methods.

               a. A minimum of two measurements from two known and fixed positions that terminate
                  at the end of the sleeve.

               b. A GPS (Global Positioning System) fix in degrees, minutes, and seconds for the
                  longitude and latitude location of device.

           5. Have the PVB tested as per Chapter 290 of the Texas Water Code. Provide the Owner
              a copy of this inspection.

       M. The Contractor shall maintain an “As Built” file. This record or log shall include all changes
          and modifications to the original plan on a daily basis. Upon completion of the project, these
          changes contained in the “as built file” will be noted on all of the designs, documents, etc, and
          will be provided to the Owner in the form of a completed as built design.

3.03    TESTING

       A. General - Notify Landscape Architect 48 hours in advance when testing will be conducted.
          Conduct tests in presence of Landscape Architect and a representative of M D Anderson,
          Grounds and Landscape Department.

       B. Hydrostatic Test - Test irrigation main line, before backfilling trenches, to a hydrostatic
          pressure of not less than 100 psi for 1 hour. Piping may be tested in sections to expedite
          work. Remove and repair or replace piping and connections which do not pass hydrostatic
          testing. System shall not lose more than 1-1/2 gallons of water in 1 hour.

       C. Shut off mainline at backflow preventer during non working hours until Contractor has
          demonstrated the mainline is stable.

       D. Operational Testing - Perform operational testing after hydrostatic testing is completed,
          backfill is in place, and irrigation heads are adjusted to final position.

           1. Demonstrate to Landscape Architect that system meets coverage requirements, is as
              specified and indicated, and that automatic controls function properly.

           2. Coverage requirements are based on operation of one circuit at a time.




 The University of Texas                                                         IRRIGATION SYSTEMS
 MD ANDERSON Cancer Center                                                                    32 80 00
 MS042611                                                                                    14 OF 15
MD ANDERSON Project No. XX-XXXX                                     MD ANDERSON PROJECT NAME
A/E Name                                                                        Issue Description
A/E Project No.                                                                  Month, 00, 0000

           3. After completion of grading, sodding, and rolling of grass areas, carefully adjust lawn
              sprinkler heads so they will be flush with or not more than 1/2 inch above finished grade.
              Set shrub sprinkler heads not more than 1/2 inch above top of mulch.

3.04    MAINTENANCE

       A. Contractor shall coordinate with the Owner on the implementation of the initial ET based
          irrigation schedule.

       B. Contractor shall correctly maintain the Irrigation System during the installation process and
          throughout the landscaping maintenance service period as specified in Section 32 91 20 -
          Exterior Landscape Maintenance.

       C. Contractor shall provide "As Built" Drawings for new work, showing dimensioned location of
          valves, meters, vacuum breakers, controllers, and mainline. Contractor shall request
          reproducible mylars form the Landscape Architect in preparation of "As Built" Drawings.


                                     END OF SECTION 32 80 00




 The University of Texas                                                       IRRIGATION SYSTEMS
 MD ANDERSON Cancer Center                                                                  32 80 00
 MS042611                                                                                  15 OF 15

								
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