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					INDEFINITE QUANTITY TERM CONTRACT                                                 REVISED July 03
University of Maryland College Park


                                        SECTION 15050

                    BASIC MECHANICAL MATERIALS AND METHODS

PART 1 – GENERAL

1.1    SECTION INCLUDES

 A.    Basic material and equipment required for the piping work as indicated on the drawings
       and specified in Division 15.

 B.    Other requirements applicable to more than one section of Division 15.

 C.    Identification of mechanical systems and equipment.

1.2    RELATED SECTIONS

 A.    Warranties and Bonds: Section 01740

 B.    Operation and Maintenance Manuals: Section 01770

 C.    Paints and Coatings: Section 09900

1.3    DEFINITIONS

 A.    Correction period: UMCP General Conditions, “Guarantees,” a period of 2 years after a
       date fixed by the Owner and Contractor during which the Contractor shall re-execute,
       correct, repair, or remove and replace with proper work, without cost to the University,
       and work found not to be as guaranteed by the Section “Prosecution and progress of the
       Work.”

 B.    DN: Dimension Nominale, nominal pipe size in millimeters, in accordance with the metric
       system for construction, Systeme Internationale (SI).

 C.    NPS: Nominal pipe size in inches, in accordance with standard U.S. designations for
       manufactured pipe. Pipe sizes do not change when projects are designed and built in
       metric units; each size has a consistent name (nominal dimension) in each system.

1.4    DESIGN REQUIREMENTS

 A.    The drawings and system performances have been designed based on using the
       particular manufacturer’s products specified and scheduled on the drawings.

 B.    Products of other manufacturers that are listed under the article “Acceptable
       Manufacturers”, or permitted as “equal,” are permitted provided:

       1.    Product shall meet the specifications.

       2.    Contractor shall make, without addition to the contract sum, all adjustments for
             deviations so that the final installation is complete and functions as the design
             basis product is intended.

 C.    Do not propose products with dimensions or other characteristics different from the
       design basis product that render their use impractical, or cause functional fit, access, or
       connection problems.


Basic Mechanical Materials and Methods                                                     15050-1
INDEFINITE QUANTITY TERM CONTRACT                                                 REVISED July 03
University of Maryland College Park


 D.    The contract drawings are generally diagrammatic and do not indicate all fittings or
       offsets in pipe, all access panels, or other specialties required.

       1.    Install pipe exposed to view parallel with the lines of the building and as close to
             walls, columns, and ceilings as may be practical, maintaining proper clearances for
             access at all parts requiring servicing.

       2.    Install pipe a sufficient distance from other work to permit a clearance of not less
             than 0.5 inch (15 mm) between its finished covering and adjacent work.
       3.    No pipe shall be run below the head of a window or door.

       4.    Pull boxes and other appurtenances which require operation or maintenance shall
             be easily accessible. Do not cut or form handholes for operation or maintenance of
             appliances through walls or ceilings.

1.5    SUBMITTALS

 A.    Comply with Section 01330.

 B.    Shop drawings:

       1.    Showing proposed expansion design.

       2.    Schedule of welding and brazing procedures proposed for each piping system
             included in the project.

 C.    Certifications: Proof of operator and testing agency personnel qualifications as required
       for welding and brazing in the article “Quality Assurance” below.

 D.    Test reports: Field test results for each piping system as specified in Part 3 below.

1.6    QUALITY ASSURANCE

 A.    Provide materials and perform work in accordance with the plumbing, mechanical,
       electrical, building, fire, health and safety, and other applicable codes and regulations of
       the state, county or city in which the work is performed.

 B.    Welding procedures and operator qualifications for structural welding: AWS D1.1,
       Structural Welding Code Steel, electric arc process.

 C.    Welding, brazing, and soldering procedures and operator qualifications for building
       systems piping:

       1.    AWS D10.9, Qualification of Welding Procedures and Welders for Piping and
             Tubing.

       2.    ASME B31.9, Building Services Piping.

       3.    Copper Development Association “Copper Tube Handbook.”

       4.    Safe Drinking Water Act.

 D.    Welding and brazing procedures, operator qualifications, testing procedures, and
       personnel qualifications for steam piping systems operating above 250 degrees F (120
       degrees C) or above 15 psig (100 kPa), and water piping systems operating above 250


Basic Mechanical Materials and Methods                                                      15050-2
INDEFINITE QUANTITY TERM CONTRACT                                                 REVISED July 03
University of Maryland College Park

       degrees F (120 degrees C) or above 160 psig (1100 kPa), and for welding pressure
       vessels:

       1.    ASME Boiler and Pressure Vessel Code (BPVC):

             a.    Section II Part C, Welding Rods, Electrodes, and Filler Metals.
             b.    Section V, Nondestructive Examination.
             c.    Section IX, Qualification Standard for Welding and Brazing Procedures,
                   Welders, Brazers, and Welding and Brazing Operators.

       2.    ASME B31.1, Power Piping.

 E.    Qualifications of independent testing laboratory personnel:

       1.    Welding inspectors: AWS QC1, Certification of Welding Inspectors.

       2.    Nondestructive evaluation personnel: American Society for Nondestructive Testing
             Recommended Practice.

 F.    Electrical control panels, equipment, materials and devices provided or installed as work
       of Division 15 shall bear UL label or, if UL label is not available, the item shall be tested
       and labeled by a nationally recognized testing agency, acceptable to authorities having
       jurisdiction, and in accordance with NFPA 70 (NEC). Provide testing, if required, without
       addition to the contract sum.

PART 2 – PRODUCTS

2.1    MATERIALS

 A.    General piping techniques, testing, identification, painting, and operating instructions
       specified in this section apply to products specified in other sections of Division 15.

 B.    Bituminous protective coating: Coal-tar based, self-priming on steel, applied in a wet film
       thickness at least 20 mils (0.5 mm) per coat; equal to 46H-413 “Hi-Build Tneme-Tar”
       manufactured by Tnemec Company, Inc.

 C.    Rust-inhibitive paint: Alkyd based, equal to Benjamin Moore “Retardo” 163, white or
       yellow, applied in a wet film thickness of at least 2.9 mils (0.07 mm).

 D.    Weldolets and threadolets: Fittings designed for installing branches on piping, with either
       welded or threaded a connection to branch; conforming to ASTM A 234.

 E.    Solder: Free of lead, antimony, and zinc. No solder containing lead is permitted.

       1.    Tin 95.5 percent, copper 4 percent, and silver 0.5 percent; equal to “Silvabrite 100”
             manufactured by Engelhard Corporation.

       2.    Tin, copper, bismuth, and silver; equal to “Oatey Silver” manufactured by Oatey.

 F.    Flux: Meeting requirements of NSF 61.

 G.    Pipe jointing compound:

       1.    Polytetrafluoroethylene (PTFE) pipe thread tape, “Teflon.”

2.2    IDENTIFICATION DEVICES AND MATERIALS


Basic Mechanical Materials and Methods                                                      15050-3
INDEFINITE QUANTITY TERM CONTRACT                                                REVISED July 03
University of Maryland College Park


 A.    Stenciling materials:

       1.    Stencils: Manufactured standard stencils prepared for required applications,
             conforming to ANSI A13.1 for color and size of legend letters, including arrows
             showing direction of flow.

       2.    Paint: Exterior type enamel, colors conforming to ANSI A13.1, or black.

 B.    Equipment identification tags:

       1.    Laminated plastic with white core and black outer layers, which, when engraved,
             will produce white letters and numerals on a black background.

       2.    Tags installed on curved surfaces shall be aluminum or brass.

 C.    Valve tags: Brass, 1.5 inch (40 mm) in diameter with black-filled numbers not less than
       0.25 inch (6 mm) high, complete with brass attachment chains.

 D.    Ceiling identification tags: Laminated plastic with engraved black letters on white
       background, minimum 0.5 inch (15 mm) wide and length as required for 0.375 inch (10
       mm) high letters for name of concealed device and number.

PART 3 – EXECUTION

3.1    INSTALLATION OF PRODUCTS AND EQUIPMENT

 A.    Manufacturer’s instructions: Except as modified by drawings or specifications, install
       products and equipment in accordance with manufacturer’s instructions and
       recommendations applicable to the project conditions.

       1.    Immediately notify Engineer and/or University Representative if a difference or
             discrepancy is found between manufacturer’s instructions and the drawings or
             specifications.

3.2    PIPE INSTALLATION

 A.    Remove burrs resulting from cutting pipe or from any other operation.

 B.    Threaded connections:

       1.    Cut threads full and clean.

       2.    Apply specified pipe jointing compound or tape on male threads only.

       3.    Where piping is installed in crawl spaces, cover exposed threads with either
             bituminous protective coating or rust-inhibitive paint. Apply after joints have been
             assembled and tested.

 C.    Thoroughly clean pipe and fittings before they are installed, and keep them clean until the
       acceptance of the completed work. Cap or plug the ends of the lines so as to prevent
       earth and other debris from entering during construction.

 D.    Provide for expansion and contraction of piping and connections so that no strain or
       breakage will occur. Provide anchors and guides of approved design where shown on
       drawings and where necessary to allow for proper expansion and contraction. At the


Basic Mechanical Materials and Methods                                                    15050-4
INDEFINITE QUANTITY TERM CONTRACT                                                REVISED July 03
University of Maryland College Park

       time of installation, expansion loops shall be cold sprung to one-half of the calculated
       expansion.

 E.    Provide for draining all parts of water piping systems and apparatus by installing a valved
       hose connection at every low point.

 F.    Black steel piping NPS 2.5 (DN 65) and larger shall be welded; NPS 2 (DN 50) and
       smaller shall be threaded, except as required otherwise in a particular section.

 G.    Do not weld galvanized piping.

 H.    Use welding fittings, tees, wyes, reducers, eccentric reducers, and caps as required.
       Branches at leas two nominal pipe sizes less than the main may be made with
       “Weldolets” or “Thredolets” installed with full size opening in larger pipe and in
       accordance with manufacturer’s printed instructions. Flanges shall be welded neck or
       slip-on pattern of class to suit the valves or equipment connections. Flanges shall have
       machine bolts with hex nuts and washers.

 I.    Each connection from risers to equipment shall contain at least three elbows or
       expansion joints. Connections shall be so arranged that movement in piping due to
       expansion and contraction will not be transmitted to the equipment.

 J.    Install unions and flanges in the piping at each item of equipment, control valve, and
       appliance, so as to provide easy removal of the equipment, valve, or appliance, and to
       provide for easy removal of coils.

 K.    Pitch water piping so that air in the system can be properly vented. Provide stop valves
       where necessary to isolate parts of system for repairs without draining the entire system.

3.3    COPPER TUBING FOR WATER INSTALLATION

 A.    Solder joints for copper tubing: Clean ends of tubing and inside of fitting ends thoroughly
       with emery cloth before applying flux.

 B.    Make flare joints in copper tubing with proper size flaring tool and in accordance with
       manufacturer’s recommendations.

 C.    Provide isolation fittings between copper and steel piping to prevent electrolysis.

 D.    Cut pipe with a tubing cutter or fine-tooth saw. Cuts made with a saw shall be true and
       square, and the end shall be filed smooth with a fine-tooth file. Remove all marks and
       burrs with sandpaper.

3.4    INTERFACE WITH OTHER PRODUCTS

 A.    Where it is necessary to run pipes through walls, provide finished, permanent, waterproof
       installation complete with inserts, sleeves, supports or hangers, seals, and other
       appurtenances as required. Do not pierce, cut, or notch any footing or other structural
       member.

 B.    Waterproofing and dampproofing of the building shall be unharmed by the installation of
       the work. Where pipe has to pierce waterproofing or dampproofing, including outside
       walls, the penetration shall be made watertight. Waterproofing damaged or destroyed
       shall be repaired or replaced with new waterproofing.

3.5    IDENTIFICATION


Basic Mechanical Materials and Methods                                                       15050-5
INDEFINITE QUANTITY TERM CONTRACT                                                REVISED July 03
University of Maryland College Park


 A.    General: Do not apply identification until insulation and finish painting work is complete.

 B.    Equipment:

       1.    Stencil equipment with minimum two-inch (50-mm) high letters or provide
             identification tags. Clearly identify function, equipment served, and area served.

       2.    Firmly fasten each identification tag to its appropriate piece of equipment with drive
             screws, sheet metal screws, or rivets. Do not interfere with operation of, or
             damage the item being marked.

 C.    Piping:

       1.    Mark by stenciling.

       2.    Mark to identify service with arrows showing direction of flow. Apply markings near
             building walls where pipes enter or leave an accessible space and in intermediate
             locations so that markings are no more than 30 feet (9 m) apart. They shall be
             readily visible to a person standing on the floor.

       3.    Fully identify all piping installed as work of the project.

       4.    Mark pipe with letters of height and with colors as required by OSHA and
             conforming to ANSI A13.1.

       5.    Identify every thermometer, gauge, and control device.

       6.    Provide valve tags for all valves except stop valves on individual fixtures or
             equipment where their function is obvious, or where the fixture or equipment is
             immediately adjacent. Numbers shall correspond to those shown on the Valve
             Chart. Attach tags to valve shaft.

 D.    Stencil ductwork after insulation is applied, with minimum two-inch (50 mm) high letters,
       clearly identifying service (supply, return, exhaust) and showing direction of flow with
       arrows. Mark ducts near the building walls where they enter or leave a space, and at
       intervals of not more than 30 feet (9 m). Identification shall be visible to a person
       standing on the floor.

 E.    Ceiling identification tags: Provide on the access door or, in suspended ceilings, on the
       ceiling support adjacent to the unit.

       1.    Valves: Identify with the same number shown on the valve tag.

       2.    Terminal units above ceilings: Identify with unit description and number.

3.6    PIPING TESTS

 A.    Notify Owner at least one day prior to the actual test.

 B.    Test before pipes are concealed or insulated. Test the piping in sections as the work
       progresses, so as not to delay progress of the building construction. Furnish pumps and
       gauges required for testing.

 C.    Conduct piping tests before connecting equipment that would be subject to damage from
       the test pressure. Replace piping or fittings found defective with new material.


Basic Mechanical Materials and Methods                                                     15050-6
INDEFINITE QUANTITY TERM CONTRACT                                                  REVISED July 03
University of Maryland College Park


 D.    Bracing and supporting: Adequately brace and support piping during the test, so that no
       movement, displacement, or damage results from the application of the test pressure.

 E.    Interior sanitary and storm drainage piping:

       1.    Before connection of the plumbing fixtures and before connection to the sewer, cap
             or plug the entire sanitary, condensate, and storm drainage piping systems of the
             building.

       2.    Test following the methods of testing required by the National Standard Plumbing
             Code, and no less than the duration and pressures required in the Schedule of
             Piping Systems Tests.

       3.    Where pipes are in trenches, leave the trenches open until the completion of the
             test.

 F.    To test steam piping systems operating above 250 degrees F (120 degrees C) or above
       15 psig (100 kPa), and water piping systems operating above 250 degrees F (120
       degrees C) or above 160 psig (1100 kPa), employ a qualified commercial inspection and
       testing laboratory to conduct visual and nondestructive tests of welds in accordance with
       the applicable requirements of the article “Quality Assurance” in Part 1 above.

 G.    Test exterior gravity sanitary and storm sewer piping by the exfiltration method. Backfill
       over sewers to a minimum depth of two feet of cover prior to tests. Plug the lower
       manhole, filling the section between manholes with water and measuring the drop in
       water level in the upper manhole. Furnish water for testing, and maintain it at levels
       directed the Engineer, for a period of at least 24 hours. Repair or replace all visible leaks
       and all defects to meet the maximum allowable leakage shown in the Sewer Piping Test
       Schedule at the end of this section.

 H.    Test the piping systems for not less than four hours to fulfill the conditions in the Piping
       Systems Test Schedule at the end of this section.

 I.    Documentation of tests: Prepare a test report for each portion of piping tested, identified
       by service, material, location, and pipe size. Include these items:

       1.    Date of test.

       2.    Starting and completion times.

       3.    Initial test pressure.

       4.    Final test pressure.

       5.    Problems or leaks detected.

       6.    Corrective actions taken.

       7.    Record of successful completion of testing.

       8.    Name, title, and signature of person conducting test.

3.7    CLEANING AND PAINTING

 A.    Cleaning: Clean all piping and equipment. Where items are to be painted, clean ready


Basic Mechanical Materials and Methods                                                       15050-7
INDEFINITE QUANTITY TERM CONTRACT                                                REVISED July 03
University of Maryland College Park

       for painting.

 B.    Painting: Coordinate painting with requirements of Division 9. Paint the items identified
       below to be painted. Use paint materials and systems specified in Division 9.

 C.    Items to be painted:

       1.    Items identified below to have protective coating.

       2.    Items furnished with manufacturer’s prime coat.

       3.    Mechanical rooms (including boiler, chiller, and air handling unit rooms):
             a.  Uninsulated steel: Piping, pumps, tanks, and vessels.
             b.  Hangers and supports.
             c.  Motors.

       4.    Piping and ductwork exposed in finished spaces, insulated and uninsulated.

       5.    Inside ducts behind registers, grilles, and diffusers.

 D.    Items not to be painted: Copper, stainless steel, and equipment furnished with
       manufacturer’s finish.

 E.    Protective coating: Piping, fittings, and hangers installed in crawl spaces shall be
       protected by one of the following:

       1.    Galvanized.

       2.    Coated with one priming and one finishing coat of bituminous protective coating.

       3.    Painted with one priming and one finishing coat of rust-inhibitive paint.

 F.    Paint systems in mechanical rooms: Paint piping using colors in accordance with ANSI
       A13.1.

       1.    Galvanized steel: One coat of primer recommended for galvanized surfaces and
             one coat of glossy alkyd enamel.

       2.    Ferrous metal: One coat of primer recommended for ferrous metal and one coat of
             glossy alkyd enamel.

       3.    Items protected with bituminous coating or rust-inhibitive primer: Finish coat of
             compatible glossy enamel.

 G.    Paint systems for exposed piping and ductwork: Primer compatible with the substrate,
       whether steel, galvanized steel, insulation jacket, or other material; one coat or two, if
       required to cover, to match adjacent surfaces in color and texture.

 H.    Painting inside ducts behind registers, grilles, and diffusers: Matte black, compatible with
       substrate and suitable for the temperatures at which the duct will operate, extending from
       the duct opening to a depth such that no unpainted surface will be visible to a person
       standing on the floor or adjacent balconies.

3.8    OPERATING INSTRUCTIONS (DEMONSTRATION)

 A.    Furnish the necessary technicians, skilled workers, and helpers to operate all the


Basic Mechanical Materials and Methods                                                        15050-8
INDEFINITE QUANTITY TERM CONTRACT                                                REVISED July 03
University of Maryland College Park

        mechanical systems and equipment of the entire project for two 4-hour days.

  B.    Where specified in technical sections, provide longer periods required for specialized
        equipment.

  C.    Instruct the Owner or designated personnel in operation, maintenance, lubrication, and
        adjustment of all systems and equipment.

  D.    The operating and Maintenance Manual shall be available at the time of the instructions,
        for use by instructors and Owner personnel.

3.9     SCHEDULES

  A.    Sewer Piping Test Schedule:

          Dia. Of Sewer                    Leakage
           in (mm)                  Gal/100 ft./24 hrs (L/M/24 hrs)

            6 (150)                         76 (9.4)
            8 (200)                         95 (11.8)
            10 (250)                        114 (14.1)
            12 (300)                        133 (16.5)

  B.    Piping Systems Test Schedule:

                    SYSTEM                               TEST          ALLOWABLE        MEDIUM
                                                      PRESSURE            DROP
                                                       PSIG (kPa)
Domestic water service and exterior water piping     150 (1030)       None             Water

Domestic water, cold & hot, and recirculated          125 (860)       None             Water
Heating water                                         125 (860)       None             Water
Chilled water                                        125 (860)        None             Water
Air conditioning condensate drain                     4.3 (30)        None             Water
Sanitary waste                                       4.3 (30)         None             Water
Steam – 25 psi (172 kPa) system                      125 (860)        None             Water
Steam – 125 psi (860 kPa) system                     200 (1370)       None             Water
Steam condensate return                               125 (860)       None             Water
Compressed air                                       150 (1030)       None             *Nitrogen
* If pressure drops, locate leaks with soap and water solution


                                           END OF SECTION




Basic Mechanical Materials and Methods                                                    15050-9
INDEFINITE QUANTITY TERM CONTRACT                                                                     REVISED July 03
University Of Maryland College Park


                                                 SECTION 15053

                                                     MOTORS


PART 1 GENERAL

  1.1         SECTION INCLUDES

         A.      Unless otherwise specified in a particular section or required for a particular application, motors
                 shall conform to the following requirements, whether factory-installed or field-installed.

         B.      Variable frequency drives.

  1.2         REFERENCES

         A.      NEMA MG 1: Motors and Generators

         B.      NEMA MG 10: Energy Management Guide for Selection and Use of Polyphase Motors.

         C.      NEMA MG 11: Energy Management Guide for Selection and Use of Single-Phase Motors.

         D.      UL 508: Industrial Control Equipment.

  1.3         DEFINITIONS

         A.      Energy efficient motor: Motor meeting the nominal and minimum efficiency levels listed for its
                 horsepower and speed in Table 12-10 of NEMA MG 1.

         B.      Nominal efficiency: Efficiency as defined in Table 12-8, Efficiency Levels, in NEMA MG 1, and
                 identified on the motor nameplate.

  1.4         SUBMITTALS

         A.      General: Comply with Section 01330.

         B.      Product data:
                 1.      Motors and drives not provided with equipment: Show nameplate data and ratings;
                         characteristics; mounting arrangements; size and location of winding termination lugs,
                         conduit entry, and grounding lugs, and coatings.
                 2.      Motor capacitors

         C.      Wiring diagrams required for the proper installation of mechanical equipment.

         D.      Submit product data which verifies compliance with ASHRAE 90.1 or provide certified
                 performance ratings by a qualified independent testing agency.

         E.      Certifications:
                 1.       Actual motor power factor for each motor, certified test results for each motor proposed
                          for use on this project.
                 2.       Field test showing corrected power factor, if required.




Motors                                                                                                      15053 - 1
INDEFINITE QUANTITY TERM CONTRACT                                                                      REVISED July 03
University Of Maryland College Park


                 3.       Motors controlled by variable frequency controllers: Certification that motor meets
                          specified requirements.
                 4.       Certified report of factory start-up test of each variable frequency drive, copy of report
                          maintained on file by the manufacturer.

         F.      Warranty for variable frequency drive, executed and signed at the time of putting the controller in
                 service.

  1.5         QUALITY ASSURANCE

         A.      Actual motor power factor shall be tested and certified by an independent testing laboratory.

         B.      Where power factor is field tested as required in “Power Factor” in Part 2 below, specialist
                 performing tests shall be acceptable to the local authorities having jurisdiction.

         C.      UL label and local testing (if required): As specified in Section 15050, Basic Mechanical
                 Materials and Methods.

         D.      HVAC equipment shall meet the energy performance requirements of ASHRAE 90.1

  1.6         QUALIFICATIONS OF VARIABLE FREQUENCY DRIVE INSTALLER

         A.      Authorized, and staff factory Trained, by manufacturer.

         B.      Maintains in the Baltimore/Washington, DC, metropolitan area a service center with staff factory
                 trained by manufacturer.

         C.      Offers 24-hour, seven-day emergency service.

         D.      Maintains locally an adequate stock of manufacturer’s genuine or approved parts to service this
                 equipment.

  1.7         REGULATORY REQUIREMENTS

         A.      Motors shall conform to the requirements of NEMA MG1 and applicable portions of the National
                 Electric Code (NEC, NFPA 70).

  1.8         WARRANTY

         A.      In addition to the general project warranty, provide for the variable frequency drive (VFD) a
                 special project warranty from the supplier, covering replacement parts, and labor, for two years
                 from the date of startup.


PART 2 PRODUCTS

  2.1         ACCEPTABLE MANUFACTURERS

         A.      Motors




Motors                                                                                                      15053 - 2
INDEFINITE QUANTITY TERM CONTRACT                                                                    REVISED July 03
University Of Maryland College Park


                 Baldor Electric Co.
                 Magne Tek
                 Marathon
                 Reliance
                 Siemens
                 Toshiba International

         B.      Motor capacitors
                 General Electric
                 Sprauge
                 Westinghouse

         C.      Variable frequency drives
                 ABB Power Distribution ACH-400
                 Graham VLT-6000
                 York AB-V

  2.2         BASIC MOTOR REQUIREMENTS

         A.      Capacity: Each motor shall have sufficient capacity and torque to start, accelerate, and operate the
                 machine it drives without exceeding the motor nameplate rating at the speed specified, or at any
                 speed and load which may be obtained by the drive actually furnished.

         B.      Starting: Each automatically controlled motor shall be capable of starting as frequently as the
                 control sequence may demand. Motors not automatically controlled shall be capable of making no
                 fewer than 4 starts per hour.

         C.      Loads: Belt-connected motors shall be equipped with shafts and bearings designed to withstand
                 both the normal connected loads of the drive furnished, and momentary loads imposed during
                 acceleration.

         D.      Ratings: Motors shall be rated for continuous duty at 100 percent of rated capacity, and
                 temperature rise shall be based on ambient temperature of 40 degrees C.

         E.      Phase: Unless otherwise indicated, motors one-half horsepower and larger shall be polyphase and
                 motor smaller than one-half horsepower shall be single-phase motors.

         F.      Two-speed motors shall be dual winding type.

         G.      Motor construction:
                 1.      Motors for fans, air handling units, and pumps, unless specified otherwise in the
                         equipment section, shall be open drip-proof NEMA design B construction.
                 2.      Motors for cooling towers, and, where indicated or specified, motors mounted outdoors,
                         shall be totally enclosed, fan-cooled (TEFC) extra severe-duty. Motors outdoors inside
                         weather-tight enclosures may be open drip-proof type.

         H.      Efficiency: The term “energy efficient” is defined in the article “Definitions” in Part 1 above.
                 1.       Single-phase motors, alternating-current fractional horsepower, rated 1/20 to 1
                          horsepower, 250 volts or less: NEMA MG 11, types and efficiencies selected for their
                          applications.
                 2.       Polyphase motors, medium alternating-current, squirrel-cage, 1 to 500 horsepower, 600
                          volts or less: NEMA MG 10, energy-efficient types selected for their application.




Motors                                                                                                      15053 - 3
INDEFINITE QUANTITY TERM CONTRACT                                                                    REVISED July 03
University Of Maryland College Park


                          Nominal full-load efficiencies shall meet or exceed ratings of Table 12-10 of NEMA MG
                          1.
                 3.       Motors for packaged hermetic and semi-hermetic refrigeration compressors need not
                          comply with these efficiency requirements but they shall comply with the requirements
                          indicated for power factor and power consumption.

  2.3         SINGLE-PHASE MOTORS

         A.      Permanent split-capacitor or split-phase type.

         B.      Bearings: Sealed, prelubricated ball-bearing type.

  2.4         POLYPHASE MOTORS

         A.      NEMA MG1 Design B.

         B.      Stator: Copper windings.

         C.      Rotor: Squirrel cage.

         D.      Bearings: Doubly shielded, prelubricated ball bearings suitable for radial and thrust loading of
                 connected equipment.

         E.      Temperature rise shall not exceed insulation rating.

         F.      Insulation: Class F.

         G.      Motors used with inrush controllers: Match wiring requirements for indicated controller with
                 required motor leads brought to motor terminal box to suit control method.

         H.      Horsepower/frame relationship: NEMA Standard for T frame motors.

         I.      Motor frame and endshields: Cast iron

         J.      Conduit box: Either steel or aluminum, diagonally split and rotatable in 90-degree increments,
                 with grounding provision.

         K.      Finishes:
                 1.       External hardware: Plated to resist corrosion.
                 2.       External paint: Industrial enamel.

         L.      Nameplates: Stainless steel or aluminum, and stamped in accordance with NEMA MG1.
                 Nameplate information shall include the nominal efficiency value in accordance with NEMA
                 MG1 and the manufacturer’s minimum guaranteed efficiency value.

  2.5         TOTALLY ENCLOSED FAN-COOLED (TEFC) MOTORS

         A.      Polyphase motors with the following additional requirements:
                 1.      TEFC construction for severe environment.
                 2.      Ventilating fans: Made of corrosion-resistant, non-sparking material.
                 3.      Conduit box: Heavy-wall cast construction, gasketed with a lead gasket between box and
                         motor frame.




Motors                                                                                                     15053 - 4
INDEFINITE QUANTITY TERM CONTRACT                                                                    REVISED July 03
University Of Maryland College Park


                 4.       Motor shaft shall be provided with an external slinger on the drive end.
                 5.       Rotor and stator air-gap surfaces coated to prevent corrosion.
                 6.       Finish: At least two coats of catalyzed epoxy enamel.

  2.6         MOTORS CONTROLLED BY VARIABLE FREQUENCY DRIVES

         A.      Specifically constructed and warranted by the manufacturer to meet the voltage requirements of
                 NEMA MG 1, Part 31.4.4.2.

         B.      Temperature rise: Match rating for Class B insulation.

         C.      Insulation: Class B or F (TEFC), or Class F (ODP).

  2.7         POWER FACTOR

         A.      Power factor for three-phase motors 10 HP and larger shall be not less than 90 percent at full rated
                 load. Test, certify, and submit certified reports for each motor as required in “Submittals” and
                 “Quality Assurance” in Part 1 above.
                 1.       Should the Contractor propose to provide motors with less than 90 percent power factor,
                          provide power-factor-correcting, automatically discharging type motor capacitors. The
                          corrected power factor of the motor-capacitor combination shall be equal to or greater
                          than 90 percent. Submit certified test results.
                 2.       Motor capacitor: Designed for installation at the load side of motor starters; insulated,
                          impregnated component unit completely enclosed in a grounded steel case with welded
                          and ground seams. Where installed on outdoor equipment, case shall be weatherproof.
                          Provide each unit with a flexible cable for connection to the starter or motor terminals.
                          The capacitor shall be suitable for use in areas with ambient temperatures ranging from
                          minus 10 degrees F to 115 degrees F.

  2.8         MOTOR DRIVES

         A.      Motors for belt-driven units shall have adjustable variably pitched cast-iron sheaves to allow a 10
                 percent increase or reduction in speed for units less than 30 HP and fixed sheaves for units 30 HP
                 and larger. Belts shall be sized for minimum 150 percent BHP. Provide OSHA- and MOSHA-
                 approved type belt guards. Include one change in drive sheave for each unit if necessary to obtain
                 required air quantities and static pressure.

  2.9         VARIABLE FREQUENCY DRIVES (ADJUSTABLE FREQUENCY DRIVES)

         A.      Adjustable-frequency alternating-current motor drive consisting of a diode-bridge rectifier and a
                 pulse-width modulated (PWM) invertor for use on a standard NEMA Design B induction motor.
                 The drive shall be designed specifically for variable torque HVAC applications.
                 1.      The variable frequency drive (VFD) shall be solid state, with a pulse-width modulated
                         (PWM) sine-coded output waveform. The VFD shall be enclosed in a NEMA 1
                         enclosure completely assembled and tested by the manufacturer. The VFD shall employ
                         a full wave rectifier to prevent input line notching, built-in ac line reactor or dc link
                         reactor, and insulated-gate bipolar transistors (IGBTs) as output power switching devices.
                         Audible noise from motor and VFD shall not be increased more than two dB, over motor
                         running alone, at one meter, above across-the-line power.
                 2.      Listed and labeled as a complete unit under UL 508 C.
                 3.      Input 460 VAC +/-10%, 3-phase, 48-63 Hz.
                 4.      Output O - Input Voltage, 3-phase, 0 to 60 Hz.




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INDEFINITE QUANTITY TERM CONTRACT                                                                REVISED July 03
University Of Maryland College Park


              5.       Environmental operating conditions: 0 to 40 degrees C, 0 to 3300 feet above sea level,
                       less than 95 percent humidity, non-condensing.

         B.   The VFD shall include the following features, all factory mounted and wired within the VFD
              enclosure:
              1.      The same customer interface, including digital display, keypad and customer
                      connections. The keypad is to be used for local control (start/stop, forward/reverse, and
                      speed adjust), for setting all parameters, and for stepping through the display and menus.
              2.      Printer circuit boards shall be completely tested and burned-in before being assembled
                      into the completed VFD. The VFD shall then be subjected to a preliminary functional
                      test, eight hour burn-in, and computerized final test. The burn-in shall be at least 104
                      degrees F (40 degrees C), at full rated load. Drive input power shall be continuously
                      cycled for maximum stress and thermal variation.
              3.      Control of harmonics: 3 percent input reactor, ac line or dc link type.
              4.      A minimum carrier frequency of 3 kHz, field adjustable up to 8 kHz without the need to
                      derate the drive when frequency is increased.
              5.      Three-phase EMI/RFI filter capable of filtering out unwanted radio frequency
                      interference (RFI) in the range of 10 kHZ to 30 MHZ.
                      a.        Manufacturer’s option: If the drive does not contain a factory-mounted RFI
                                filter, manufacturer shall submit with product data required in Part 1 above a
                                written guarantee that if RFI should occur, the manufacturer will provide
                                engineering analysis and correct the problem to the Owner’s satisfaction,
                                including providing RFI filters if required, at no addition to the contract sum.
              6.      Prewired 3-position Hand-Off-Auto switch or keypad.
              7.      Three programmable preset speeds.
              8.      Two independently adjustable accel and decal ramps, times adjustable from 1 to 360
                      seconds.
              9.      PI setpoint controller, allowing a pressure or flow signal to be connected to the VFD,
                      using the microprocessor in the VFD for the closed loop control.
              10.     Two programmable analog inputs shall accept a current or voltage signal for speed
                      reference or for PI controller. Analog inputs shall include a filter programmable from
                      0.01 to 10 seconds to remove any oscillation in the input signal. The minimum and
                      maximum values (gain and offset) shall be adjustable within the range of 0-20 mA and 0-
                      10 Volts.
              11.     Six programmable digital inputs for maximum flexibility in interfacing with energy
                      management systems, including run, stop, fault, and three preset speeds.
              12.     Two programmable analog outputs proportional to motor speed, output voltage, or output
                      current.
              13.     Two programmable digital relay outputs for “run” and “fault” status. The relays shall be
                      rated for maximum switching current 8 amps at 24 Vdc and 0.4 amps at 250 Vac;
                      Maximum voltage 300 Vdc and 250 Vac; Continuous current rating 2 amps rms
              14.     Provide a separate terminal strip for connection of freeze, fire, and smoke contacts, and
                      external start commands. All external interlocks and start/stop contacts shall remain fully
                      functional whether the drive is in Hand, Auto or Bypass.
              15.     Bypass consisting of manual transfer with service switch to line power via contractors.
                      Bypass shall be UL listed, and drive and bypass shall be combination tested for at least
                      22 KAIC series rating. Include motor thermal overload and use or circuit-breaker
                      protection while in bypass operation. A three-position selector switch to control the
                      bypass contactor and the drive output contactor is to be mounted on the enclosure door.
                      When in the “normal” mode, the bypass contactor is open and the drive output contactor
                      is closed. In the “test” position both contactors are open, and in the “bypass” position,
                      the drive output contactor is open, and the bypass contactor is closed. The drive output




Motors                                                                                                15053 - 6
INDEFINITE QUANTITY TERM CONTRACT                                                                REVISED July 03
University Of Maryland College Park


                       contactor shall also be open when a stop command is given, isolating the motor from the
                       drive. Start/stop signals and safety interlocks will work in drive and bypass modes.

         C.   The VFD shall include the following functions, all either pre-programmed or field programmed
              with the Owner’s requirements by a factory trained representative:
              1.       The ability to automatically restart after an overcurrent, overvoltage, undervoltage, or
                       loss of input signal protective trip.
              2.       Capability of starting into a rotating load (forward or reverse) and accelerating or
                       decelerating to setpoint without safety tripping or component damage (flying start).
              3.       Equipped with an automatic extended power loss ride-through circuit which will utilize
                       the inertia of the load to keep the drive powered. Minimum power loss ride-through shall
                       be one-cycle, based on full load and no inertia.
              4.       The VFD shall run at a programmable preset speed if the input reference (4-20mA or 2-
                       10V) is lost.
              5.       Three programmable critical-frequency lockout ranges to prevent the VFD from
                       continuously operating at an unstable sped.
              6.       The VFD shall ramp or coast to a stop, as selected by the user.

         D.   The VFD shall include the following electrical protection and safety devices, all factory mounted
              and wired within the VFD enclosure.
              1.      The VFD shall have the following protection circuits. In the case of a protective trip, the
                      drive shall stop, and announce the fault condition.
                      a.        Overcurrent trip 200 percent of the VFD’s variable torque current rating.
                      b.        Overvoltage trip 130 percent of the VFD’s rated voltage.
                      c.        Undervoltage trip 60 percent of the VFD’s rated voltage.
                      d.        Overtemperature +70 degrees C.
                      e.        Ground fault.
                      f.        Adaptable electronic motor overload (I2t): The electronic motor overload
                                protection shall protect the motor based on speed, load curve, and external fan
                                parameter. Circuits which protect the motor only at full speed are unacceptable.
              2.      The VFD shall employ three current limit circuits to provide trip-free operation;
                      a.        The slow current regulation limit circuits shall be adjustable from 50 percent to
                                110 percent of the VFD’s variable torque current rating. This adjustment shall
                                be made via the keypad, and shall be displayed in actual amps, and not as
                                percent of full load.
                      b.        The rapid current regulation limit shall be fixed at 140 percent of the VFD’s
                                variable torque current rating.
                      c.        The current switch-off limit shall be fixed at 150 percent of the VFD’s variable
                                torque current rating.
                      d.        The overload rating of the drive shall be 110 percent of its variable torque
                                current rating for 1 minute every 10 minutes, and 115 percent of its variable
                                torque current rating for 2 seconds every 10 seconds.
              3.      Fuses shall be 200 KAIC current-limiting type in the drive enclosures.
              4.      Magnetic circuit breaker, interlocked with the door, which will disconnect all input power
                      from the drive and all internally mounted options. The disconnect handle shall be
                      through-the-door type, and be padlockable in the Off position.
              5.      A Class 20 bimetallic thermal motor overload relay shall be provided to protect the motor
                      in bypass.
              6.      The terminal strip shall be isolated from the line and ground.




Motors                                                                                                15053 - 7
INDEFINITE QUANTITY TERM CONTRACT                                                                      REVISED July 03
University Of Maryland College Park


PART 3 EXECUTION

  3.1         INSTALLATION

         A.      Mount direct-connected motors securely and in accurate alignment. The drive shall be free from
                 both angular and parallel misalignment when both motor and driven machine are operating at
                 normal temperatures.

         B.      Provide each belt-connected motor with a securely mounted adjustable base to permit installation
                 and adjustment of belts.

         C.      Mount capacitors shipped separately beside motor connection box as required. Connect in
                 accordance with the requirements of Division 16, Electrical.
                 1.      Test units at full rated load after the installation of the motor capacitors, and submit
                         reports.

         D.      Provide additional drive and belt changes where required to meet requirements of testing and
                 balancing specified in Section 15590, Testing, Adjusting and Balancing.

  3.2         INSTALLING VARIABLE FREQUENCY DRIVE

         A.      Install drives in locations shown on drawings.

         B.      Install wiring between drive and motor in ferrous metal conduit, with separate conduits for power
                 input, power output, and controls.
                 1.       Minimum separation between conduits: 3 inches.

         C.      Service engineers trained and authorized by the variable-frequency drive manufacturer at the
                 service center shall provide start-up service, including physical inspection of drive and connected
                 wiring and final adjustments to meet specified performance requirements.

  3.3         OPERATING INSTRUCTIONS

         A.      As specified in Section 15050, provide operating instructions.

         B.      Provide at least four consecutive hours of additional instruction time for the variable frequency
                 drive.



                                                  END OF SECTION




Motors                                                                                                      15053 - 8
INDEFINITE QUANTITY TERM CONTRACT                                                REVISED July 03
University of Maryland College Park


                                      SECTION 15060

                               HANGERS AND SUPPORTS



PART 1 GENERAL

1.1   SUMMARY

      A.    Section Includes:
      1.    Pipe hangers and supports.
      2.    Hanger rods.
      3.    Inserts.
      4.    Flashing.
      5.    Equipment curbs.
      6.    Sleeves.
      7.    Mechanical sleeve seals.
      8.    Formed steel channel.
      9.    Firestopping relating to mechanical work.
      10.   Firestopping accessories.
      11.   Equipment bases and supports.

1.2   REFERENCES

      A.    American Society of Mechanical Engineers:
      1.    ASME B31.1 - Power Piping.
      2.    ASME B31.5 - Refrigeration Piping.
      3.    ASME B31.9 - Building Services Piping.

      B.    American Society for Testing and Materials:
      1.    ASTM E84 - Test Method for Surface Burning Characteristics of Building Materials.
      2.    ASTM E119 - Method for Fire Tests of Building Construction and Materials.
      3.    ASTM E814 - Test Method of Fire Tests of Through Penetration Firestops.
      4.    ASTM F708 - Standard Practice for Design and Installation of Rigid Pipe Hangers.

      C.    American Welding Society:
      1.    AWS D1.1 - Structural Welding Code - Steel.

      D.    Factory Mutual System:
      1.    FM - Approval Guide, A Guide to Equipment, Materials & Services Approved By
            Factory Mutual Research For Property Conservation.

      E.    Manufacturers Standardization Society of the Valve and Fittings Industry:
      1.    MSS SP 58 - Pipe Hangers and Supports - Materials, Design and Manufacturer.
      2.    MSS SP 69 - Pipe Hangers and Supports - Selection and Application.
      3.    MSS SP 89 - Pipe Hangers and Supports - Fabrication and Installation Practices.

      F.    Underwriters Laboratories Inc.:



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                                                                                        15060 - 1
INDEFINITE QUANTITY TERM CONTRACT                                                  REVISED July 03
University of Maryland College Park


      1.    UL 263 - Fire Tests of Building Construction and Materials.
      2.    UL 723 - Tests for Surface Burning Characteristics of Building Materials.
      3.    UL 1479 - Fire Tests of Through-Penetration Firestops.
      4.    UL - Fire Resistance Directory.

      G.    Warnock Hersey:
      1.    WH - Certification Listings.

1.3   DEFINITIONS

      A.    Firestopping (Through-Penetration Protection System): Sealing or stuffing material or
            assembly placed in spaces between and penetrations through building materials to arrest
            movement of fire, smoke, heat, and hot gases through fire rated construction.

1.4   SYSTEM DESCRIPTION


      A.    Firestopping Materials: to achieve fire ratings as noted on Drawings for adjacent
            construction, but not less than 1 hour fire rating.

      B.    Surface Burning: UL 723 with maximum flame spread / smoke developed rating of
            25/450.

      C.    Firestop interruptions to fire rated assemblies, materials, and components.

1.5   PERFORMANCE REQUIREMENTS

      A.    Firestopping: Provide certificate of compliance from authority having jurisdiction
            indicating approval of materials used.

1.6   SUBMITTALS

      A.    Section 01330 - Submittal Procedures: Submittal procedures.

      B.    Shop Drawings: Indicate system layout with location including critical dimensions,
            sizes, and pipe hanger and support locations and detail of trapeze hangers.

      C.    Product Data:
      1.    Hangers and Supports: Submit manufacturers catalog data including load capacity.
      2.    Firestopping: Submit data on product characteristics, performance and limitation
            criteria.

      D.    Firestopping Schedule: Submit schedule of opening locations and sizes, penetrating
            items, and required listed design numbers to seal openings to maintain fire resistance
            rating of adjacent assembly.

      E.    Design Data: Indicate load carrying capacity of trapeze, multiple pipe, and riser support
            hangers. Indicate calculations used to determine load carrying capacity of trapeze,
            multiple pipe, and riser support hangers.



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                                                                                          15060 - 2
INDEFINITE QUANTITY TERM CONTRACT                                                  REVISED July 03
University of Maryland College Park


       F.    Manufacturer's Installation Instructions:
       1.    Hangers and Supports: Submit special procedures and assembly of components.
       2.    Firestopping: Submit preparation and installation instructions.

       G.    Manufacturer's Certificate: Certify products meet or exceed specified requirements.

1.7    QUALITY ASSURANCE.

       A.    Perform Work in accordance with AWS D1.1 for welding hanger and support
             attachments to building structure.

       B.    Maintain one copy copies of each document on site.

1.8    QUALIFICATIONS

       A.    Manufacturer: Company specializing in manufacturing Products specified in this section
             with minimum five years documented experience.

       B.    Installer: Company specializing in performing Work of this section with minimum 5
             years experience.

1.9    PRE-INSTALLATION MEETINGS

       A.    Section 01300 - Administrative Requirements: Pre-installation meeting.

       B.    Convene minimum one week prior to commencing work of this section.

1.10   DELIVERY, STORAGE, AND HANDLING

       A.    Section 01600 - Product Requirements: Requirements for transporting, handling,
             storing, and protecting products.

       B.    Accept materials on site in original factory packaging, labeled with manufacturer's
             identification.

       C.    Protect from weather and construction traffic, dirt, water, chemical, and mechanical
             damage, by storing in original packaging.

1.11   ENVIRONMENTAL REQUIREMENTS

       A.    Product Requirements: Environmental conditions affecting products on site.

       B.    Do not apply firestopping materials when temperature of substrate material and ambient
             air is below 60 degrees F.

       C.    Maintain this minimum temperature before, during, and for minimum 3 days after
             installation of firestopping materials.

       D.    Provide ventilation in areas to receive solvent cured materials.



                                                                                Hangers and Supports
                                                                                           15060 - 3
INDEFINITE QUANTITY TERM CONTRACT                                                   REVISED July 03
University of Maryland College Park


1.12   FIELD MEASUREMENTS

       A.    Verify field measurements prior to fabrication.

1.13   WARRANTY

       A.    Section 01700 - Execution Requirements: Product warranties and product bonds.

       B.    Furnish five year manufacturer warranty for pipe hangers and supports.


PART 2 PRODUCTS

2.1    PIPE HANGERS AND SUPPORTS

       A.    Manufacturers:
       1.    Carpenter & Paterson Inc
       2.    Glope Pipe Hanger Products Inc.
       3.    Michigan Hanger Co.]

       B.    Plumbing Piping - DWV:
       1.    Conform to MSS SP58.
       2.    Hangers for Pipe Sizes 1/2 to 1-1/2 inch: Malleable iron adjustable swivel, split ring.
       3.    Hangers for Pipe Sizes 2 inches and Larger: Carbon steel, adjustable, clevis.
       4.    Multiple or Trapeze Hangers: Steel channels with welded spacers and hanger rods.
       5.    Wall Support for Pipe Sizes 3 inches and Smaller: Cast iron hook.
       6.    Wall Support for Pipe Sizes 4 inches and Larger: Welded steel bracket and wrought
             steel clamp.
       7.    Vertical Support: Steel riser clamp.
       8.    Floor Support: Cast iron adjustable pipe saddle, lock nut, nipple, floor flange, and
             concrete pier or steel support.
       9.    Copper Pipe Support: Copper-plated, carbon-steel adjustable, ring.

       C.    Plumbing Piping - Water:
       1.    Conform to MSS SP69.
       2.    Hangers for Pipe Sizes 1/2 to 1-1/2 inch: Malleable iron, adjustable swivel, split ring.
       3.    Hangers for Cold Pipe Sizes 2 inches and Larger: Carbon steel, adjustable, clevis.
       4.    Hangers for Hot Pipe Sizes 2 to 4 inches: Carbon steel, adjustable, clevis.
       5.    Hangers for Hot Pipe Sizes 6 inches and Larger: Adjustable steel yoke, cast iron roll,
             double hanger.
       6.    Multiple or Trapeze Hangers: Steel channels with welded spacers and hanger rods.
       7.    Multiple or Trapeze Hangers for Hot Pipe Sizes 6 inches and Larger: Steel channels
             with welded spacers and hanger rods, cast iron roll.
       8.    Wall Support for Pipe Sizes 3 inches and Smaller: Cast iron hook.
       9.    Wall Support for Pipe Sizes 4 inches and Larger: Welded steel bracket and wrought
             steel clamp.
       10.   Wall Support for Hot Pipe Sizes 6 inches and Larger: Welded steel bracket and wrought
             steel clamp with adjustable steel yoke and cast iron roll.
       11.   Vertical Support: Steel riser clamp.


                                                                                 Hangers and Supports
                                                                                            15060 - 4
INDEFINITE QUANTITY TERM CONTRACT                                                    REVISED July 03
University of Maryland College Park


      12.   Floor Support for Cold Pipe: Cast iron adjustable pipe saddle, lock nut, nipple, floor
            flange, and concrete pier or steel support.
      13.   Floor Support for Hot Pipe Sizes 4 inches and Smaller: Cast iron adjustable pipe saddle,
            lock nut, nipple, floor flange, and concrete pier or steel support.
      14.   Floor Support for Hot Pipe Sizes 6 inches and Larger: Adjustable cast iron roll and
            stand, steel screws, and concrete pier or steel support.
      15.   Copper Pipe Support: Copper-plated, Carbon-steel ring.

      D.    Hydronic Piping:
      1.    Conform to MSS SP69.
      2.    Hangers for Pipe Sizes 1/2 to 1-1/2 inch: Carbon steel, adjustable swivel, split ring.

      E.    Steam and Steam Condensate Piping:
      1.    Conform to MSS SP69.
      2.    Hangers for Pipe Sizes 1/2 to 1-1/2 inch Carbon steel, adjustable swivel, split ring.

      F.    Refrigerant Piping:
      1.    Conform to MSS SP69.
      2.    Hangers for Pipe Sizes 1/2 to 1-1/2 inch: Malleable iron, adjustable swivel, split ring.
      3.    Hangers for Pipe Sizes 2 inches and Larger: Carbon steel, adjustable, clevis.
      4.    Multiple or Trapeze Hangers: Steel channels with welded spacers and hanger rods.
      5.    Wall Support for Pipe Sizes 3 inches and Smaller: Cast iron hook.
      6.    Wall Support for Pipe Sizes 4 inches and Larger: Welded steel bracket and wrought
            steel clamp.
      7.    Vertical Support: Steel riser clamp.
      8.    Floor Support: Cast iron adjustable pipe saddle, lock nut, nipple, floor flange, and
            concrete pier or steel support.
      9.    Copper Pipe Support: Copper-plated carbon-steel ring.

2.2   ACCESSORIES

      A.    Hanger Rods: Mild steel threaded both ends, threaded on one end, or continuous
            threaded.

2.3   INSERTS

      A.    Inserts: Malleable iron case of galvanized steel shell and expander plug for threaded
            connection with lateral adjustment, top slot for reinforcing rods, lugs for attaching to
            forms; size inserts to suit threaded hanger rods.

2.4   FLASHING

      A.    Caps: Steel, 22 gage minimum; 16 gage at fire resistant elements.

2.5   EQUIPMENT CURBS

      A.    Any roof penetration or modification shall be submitted to University Project Manager
            for approval prior to commencing work.




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                                                                                            15060 - 5
INDEFINITE QUANTITY TERM CONTRACT                                                   REVISED July 03
University of Maryland College Park


      B.    Fabrication: Welded 18 gage galvanized steel shell and base, mitered 3 inch cant,
            variable step to match roof insulation, 1-1/2 inch thick insulation, factory installed wood
            nailer.

2.6   SLEEVES

      A.    Sleeves for Pipes Through Non-fire Rated Floors: 18 gage thick galvanized steel.

      B.    Sleeves for Round Ductwork: Galvanized steel.

      C.    Sleeves for Rectangular Ductwork: Galvanized steel.

      D.    Sealant: Acrylic

2.7   MECHANICAL SLEEVE SEALS

      A.    Manufacturers:
      1.    Thunderline Link-Seal, Inc.

      B.    Product Description: Modular mechanical type, consisting of interlocking synthetic
            rubber links shaped to continuously fill annular space between object and sleeve,
            connected with bolts and pressure plates causing rubber sealing elements to expand
            when tightened, providing watertight seal and electrical insulation.

2.8   FORMED STEEL CHANNEL

      A.    Manufacturers:
      1.    Allied Tube & Conduit Corp. Model
      2.    B-Line Systems Model .
      3.    Midland Ross Corporation, Electrical Products Division Model

2.9   FIRESTOPPING

      A.    Manufacturers:
      1.    Dow Corning Corp. Model.
      2.    Fire Trak Corp. Model
      3.    Hilti Corp. Model
      4.    International Protective Coating Corp

      B.    Product Description: Different types of products by multiple manufacturers are
            acceptable as required to meet specified system description and performance
            requirements; provide only one type for each similar application.
      1.    Silicone Firestopping Elastomeric Firestopping: Single component silicone elastomeric
            compound and compatible silicone sealant.
      2.    Foam Firestopping Compounds: Single component foam compound.
      3.    Formulated Firestopping Compound of Incombustible Fibers: Formulated compound
            mixed with incombustible non-asbestos fibers.
      4.    Fiber Stuffing and Sealant Firestopping: Composite of mineral fiber stuffing insulation
            with silicone elastomer for smoke stopping.



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                                                                                           15060 - 6
INDEFINITE QUANTITY TERM CONTRACT                                                      REVISED July 03
University of Maryland College Park


       5.    Mechanical Firestopping Device with Fillers: Mechanical device with incombustible
             fillers and silicone elastomer, covered with sheet stainless steel jacket, joined with
             collars, penetration sealed with flanged stops.
       6.    Intumescent Firestopping: Intumescent putty compound which expands on exposure to
             surface heat gain.
       7.    Firestop Pillows: Formed mineral fiber pillows.

       C.    Color: Black

2.10   FIRESTOPPING ACCESSORIES

       A.    Primer: Type recommended by firestopping manufacturer for specific substrate surfaces
             and suitable for required fire ratings.

       B.    Dam Material: Permanent:
       1.    Mineral fiberboard.
       2.    Mineral fiber matting.
       3.    Sheet metal.

       C.    Installation Accessories: Provide clips, collars, fasteners, temporary stops or dams, and
             other devices required to position and retain materials in place.

       D.    General:
       1.    Furnish UL listed products.
       2.    Select products with rating not less than rating of wall or floor being penetrated.

       E.    Non-Rated Surfaces:
       1.    Stamped steel, chrome plated, hinged, split ring escutcheons or floor plates or ceiling
             plates for covering openings in occupied areas where piping is exposed.
       2.    For exterior wall openings below grade, furnish mechanical sealing device to
             continuously fill annular space between piping and cored opening or water-stop type
             wall sleeve.


PART 3 EXECUTION

3.1    EXAMINATION

       A.    Section 01300 - Administrative Requirements: Verification of existing conditions before
             starting work.

       B.    Verify openings are ready to receive sleeves.

       C.    Verify openings are ready to receive firestopping.

3.2    PREPARATION

       A.    Clean substrate surfaces of dirt, dust, grease, oil, loose material, or other matter affecting
             bond of firestopping material.



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                                                                                              15060 - 7
INDEFINITE QUANTITY TERM CONTRACT                                                    REVISED July 03
University of Maryland College Park


      B.    Remove incompatible materials affecting bond.

      C.    Obtain permission from Architect/Engineer before using powder-actuated anchors.

      D.    Do not drill or cut structural members.



3.3   INSTALLATION - INSERTS

      A.    Install inserts for placement in concrete forms.

      B.    Install inserts for suspending hangers from reinforced concrete slabs and sides of
            reinforced concrete beams.

      C.    Provide hooked rod to concrete reinforcement section for inserts carrying pipe 4 inches
            and larger.

      D.    Where concrete slabs form finished ceiling, locate inserts flush with slab surface.

      E.    Where inserts are omitted, drill through concrete slab from below and provide through-
            bolt with recessed square steel plate and nut flush with top of recessed into and grouted
            flush with.

3.4   INSTALLATION - PIPE HANGERS AND SUPPORTS

      A.    Install in accordance with MSS SP 69.

      B.    Support horizontal piping as scheduled.

      C.    Install hangers with minimum 1/2 inch space between finished covering and adjacent
            work.

      D.    Place hangers within 12 inches of each horizontal elbow.

      E.    Use hangers with 1-1/2 inch minimum vertical adjustment.

      F.    Support horizontal cast iron pipe adjacent to each hub, with 5 feet maximum spacing
            between hangers.

      G.    Support vertical piping at every floor. Support vertical cast iron pipe at each floor at
            hub.

      H.    Where piping is installed in parallel and at same elevation, provide multiple pipe or
            trapeze hangers.

      I.    Support riser piping independently of connected horizontal piping.

      J.    Provide copper plated hangers and supports for copper piping.



                                                                                  Hangers and Supports
                                                                                             15060 - 8
INDEFINITE QUANTITY TERM CONTRACT                                                   REVISED July 03
University of Maryland College Park


      K.    Design hangers for pipe movement without disengagement of supported pipe.

      L.    Prime coat exposed steel hangers and supports (refer to Section 09900). Hangers and
            supports located in crawl spaces, pipe shafts, and suspended ceiling spaces are not
            considered exposed.

      M.    Provide clearance in hangers and from structure and other equipment for installation of
            insulation. Refer to Section 15080.

3.5   INSTALLATION - EQUIPMENT BASES AND SUPPORTS

      A.    Provide housekeeping pads of concrete, minimum 3-1/2 inches thick and extending 6
            inches beyond supported equipment. Refer to Section.

      B.    Using templates furnished with equipment, install anchor bolts, and accessories for
            mounting and anchoring equipment.

      C.    Construct supports of steel members. Brace and fasten with flanges bolted to structure.

      D.    Provide rigid anchors for pipes after vibration isolation components are installed. Refer
            to Section 15070.

3.6   INSTALLATION - FLASHING

      A.    Provide flexible flashing and metal Counterflashing where piping and ductwork
            penetrate weather or waterproofed walls, floors, and roofs. Refer to Section 03300.

      B.    Flash vent and soil pipes projecting 3 inches minimum above finished roof surface with
            lead worked 1 inch minimum into hub, 8 inches minimum clear on sides with 24 x 24
            inches sheet size. For pipes through outside walls, turn flanges back into wall and caulk,
            metal counter-flash, and seal.

      C.    Flash floor drains in floors with topping over finished areas with lead, 10 inches clear on
            sides with minimum 36 x 36 inch sheet size. Fasten flashing to drain clamp device.

      D.    Provide acoustical lead flashing around ducts and pipes penetrating equipment rooms for
            sound control.

      E.    Adjust storm collars tight to pipe with bolts; caulk around top edge. Use storm collars
            above roof jacks. Screw vertical flange section to face of curb.

3.7   INSTALLATION - SLEEVES

      A.    Exterior watertight entries: Seal with mechanical sleeve seals.

      B.    Set sleeves in position in forms. Provide reinforcing around sleeves.

      C.    Size sleeves large enough to allow for movement due to expansion and contraction.
            Provide for continuous insulation wrapping.



                                                                                Hangers and Supports
                                                                                           15060 - 9
INDEFINITE QUANTITY TERM CONTRACT                                                  REVISED July 03
University of Maryland College Park


      D.    Extend sleeves through floors 1 inch above finished floor level. Caulk sleeves.

      E.    Where piping or ductwork penetrates floor, ceiling, or wall, close off space between
            pipe or duct and adjacent work with firestopping insulation and caulk. Provide close
            fitting metal collar or escutcheon covers at both sides of penetration.

      F.    Install chrome plated steel escutcheons at finished surfaces.

3.8   INSTALLATION - FIRESTOPPING

      A.    Install material at fire rated construction perimeters and openings containing penetrating
            sleeves, piping, ductwork, and other items, requiring firestopping.

      B.    Apply primer where recommended by manufacturer for type of firestopping material
            and substrate involved, and as required for compliance with required fire ratings.

      C.    Apply firestopping material in sufficient thickness to achieve required fire and smoke
            rating,to uniform density and texture.

      D.    Fire Rated Surface:
      1.    Seal opening at floor, wall, partition, ceiling, and roof as follows:
                    a.     Install sleeve through opening and extending beyond minimum of 1 inch
                           on both sides of building element.
                    b.     Size sleeve allowing minimum of 1 inch (25 mm) void between sleeve
                           and building element.
                    c.     Pack void with backing material.
                    d.     Seal ends of sleeve with UL listed fire resistive silicone compound to
                           meet fire rating of structure penetrated.
      2.    Where cable tray, bus, cable bus, conduit penetrates fire rated surface, install
            firestopping product in accordance with manufacturer's instructions.

      E.    Non-Rated Surfaces:
      1.    Seal opening through non-fire rated wall, partition floor, ceiling, and roof opening as
            follows:
                    a.       Install sleeve through opening and extending beyond minimum of 1 inch
                             on both sides of building element.
                    b.       Size sleeve allowing minimum of 1 inch void between sleeve and
                             building element.
                    c.       Install type of firestopping material recommended by manufacturer.
      2.    Install escutcheons where conduit, penetrates non-fire rated surfaces in occupied spaces.
            Occupied spaces include rooms with finished ceilings and where penetration occurs
            below finished ceiling.
      3.    Exterior wall openings below grade: Assemble rubber links of mechanical sealing
            device to size of piping and tighten in place, in accordance with manufacturer's
            instructions.
      4.    Interior partitions: Seal pipe penetrations at clean rooms, laboratories, computer rooms,
            telecommunication rooms, data rooms. Apply sealant to both sides of penetration to
            completely fill annular space between sleeve and conduit.



                                                                                Hangers and Supports
                                                                                          15060 - 10
INDEFINITE QUANTITY TERM CONTRACT                                                       REVISED July 03
University of Maryland College Park


3.9    FIELD QUALITY CONTROL

       A.         Section 01400 Quality Requirements and Section 01700 Execution Requirements: Field
                  inspecting, testing, adjusting, and balancing.

       B.         Inspect installed firestopping for compliance with specifications and submitted schedule.

3.10   CLEANING

       A.         Section 01700 - Execution Requirements: Requirements for cleaning.

       B.         Clean adjacent surfaces of firestopping materials.

3.11   PROTECTION OF FINISHED WORK

       A.         Section 01700 - Execution Requirements: Requirements for protecting finished Work.

       B.         Protect adjacent surfaces from damage by material installation.

3.12   SCHEDULES

PIPE HANGER SPACING



                                                          HANGER
                                                          ROD
       PIPE SIZE         MAX. HANGER SPACING              DIAMETER

       Inches                    Feet (m)                 Inches (mm)

       1/2                       7 (2.1)                  3/8 (9)
       3/4                       7 (2.1)                  3/8 (9)
       1                         7 (2.1)                  3/8 (9)
       1-1/4                     7 (2.1)                  3/8 (9)
       1-1/2                     9 (2.7)                  3/8 (9)
       2                         10 (3)                   3/8 (9)
       2-1/2                     11 (3.4)                 1/2 (13)
       3                         12 (3.7)                 1/2 (13)
       4                         14 (4.3)                 5/8 (15)
       5                         16 (4.9)                 5/8 (15)
       6                         17 (5.2)                 3/4 (19)
       8                         19 (5.8)                 3/4 (19)
       10                        22 (6.1)                 7/8 (22)
       12                        23 (7)                   7/8 (22)
       14 (350)                  25                       1 (25)
       16 (400)                  27                       1 (25)
       18 (450)                  28                       1 (25)
       20 (500)                  30                       1-1/4 (32)


                                                                                    Hangers and Supports
                                                                                              15060 - 11
INDEFINITE QUANTITY TERM CONTRACT                       REVISED July 03
University of Maryland College Park


     24 (600)             32            1-1/4 (32)
     PVC (All Sizes)      6             3/8 (9)
     C.I. Bell and
     Spigot (or No-Hub)   5             5/8 (15)
     And at Joints


                               END OF SECTION




                                                     Hangers and Supports
                                                               15060 - 12
INDEFINITE QUANTITY TERM CONTRACT                                              REVISED July 03
University of Maryland College Park


                   SECTION 15070 – VIBRATION CONTROL SUPPORTS

PART 1 – GENERAL

1.1    SECTION INCLUDES

 A.    Vibration control supports for mechanical equipment.

1.2    RELATED SECTIONS

 A.    Hangers and supports: Section 15060.

 B.    Flexible pipe connections: Piping specialties.

 C.    Flexible duct connections: Duct accessories.

1.3    SUBMITTALS

 A.    General: Comply with Section 01330

 B.    Product data: For each type of vibration control support included in the work.

 C.    Shop drawings: Custom-fabricated supports.

PART 2 – PRODUCTS

2.1    ACCEPTABLE MANUFACTURERS

 A.    Mason Industries units are the basis for design. The following listed manufacturers also
       provide units of acceptable quality. If units by any of these manufacturers should be
       proposed, verify that they meet requirements specified in “Product Substitutions” in
       Section 01631.

 B.    Manufacturers:

       Amber/Booth Company, Inc.
       Mason Industries
       Korfund Dynamics Corporation
       Vibration Eliminator Company, Inc.
       Consolidated Kenetics Corporation
       Vibration Mountings and Controls, Inc.

2.2    VIBRATION CONTROL SUPPORTS

 A.    Provide engineered supports for equipment. The units shall prevent the transmission of
       vibration and mechanically transmitted sound to the building structure.

       1.    Select units in accordance with the weight distribution of the equipment, so as to
             produce reasonably uniform deflection. Deflections shall be as specified.

       2.    Units installed on exterior shall be galvanized.

 B.    Spring Isolation, Interior: Equal to Mason Industries ND, double-deflection neoprene
       type. All metal surfaces shall be covered with neoprene and have friction pads both top



Vibration Control Supports                                                              15070 – 1
INDEFINITE QUANTITY TERM CONTRACT                                                REVISED July 03
University of Maryland College Park

       and bottom. Provide bolt holes for mounting. Provide steel rails where necessary to
       compensate for equipment overhang.

 C.    Spring Isolation, Exterior: Equal to Mason Industries SLRW, galvanized spring type with
       neoprene pad top and bottom and with a housing that includes vertical resilient limit stops
       to prevent spring from extending when weight is removed. The housing shall serve as
       blocking during erection and the shims shall be removed after spring adjustment.

       1.    Obtain data from the manufacturer of the supported equipment, and select springs
             individually to provide equal deflection with uneven point loading of the equipment.

 D.    Open Spring Isolation: Equal to Mason Industries Type 30N hangers, combination spring
       and minimum 0.3-inch (8-mm) deflection neoprene in series.

       1.    Neoprene element: Molded with a rod isolation bushing that passes through the
             hanger box.

       2.    Spring diameters and hanger box lower hole sizes: Large enough to permit the
             hanger rod to swing through a 30-degree arc before contacting the edges of the
             hole.

       3.    Springs shall have a minimum additional travel to solid equal to 50 percent of rated
             deflection.

 E.    Inertia Bases: Equal to Mason Industries K, rectangular structural beam or channel
       concrete forms for floating foundations.

       1.    Bases for split-case pumps shall be large enough to provide support for suction
             and discharge base ells.

       2.    Base depth need not exceed 12 inches (305 mm) unless specifically recommended
             by the base manufacturer for mass or rigidity. In general, base depth shall be a
             minimum of 8 percent of the longest dimension of the base, but not less than 6
             inches (152 mm).

       3.    Forms shall include minimum concrete reinforcement consisting of half-inch bars or
             angles welded in place on 6-inch (152-mm) centers running both ways in a layer
             1.5 inch (38 mm) above the bottom, or additional steel as is required by the
             structural conditions.

       4.    Forms shall be furnished with drilled steel members with sleeves welded below the
             holes to receive equipment anchor bolts where the anchor bolts fall in concrete
             locations.

       5.    Height-saving brackets shall maintain a 1-inch (25-mm) clearance below the base.

 F.    Rubber Mount: Fifty-durometer neoprene waffle pads made from identical rubber grids
       molded back to back. The interconnections form suction pockets for gripping smooth
       steel as well as rough surfaces. The square waffle pattern is laid out on 0.5-inch (13-
       mm) centers to facilitate cutting pads to size in the field without the need for measuring.

 G.    Closed Spring Mount: Equal to Mason Industries WB, horizontal thrust restraint,
       consisting of a spring element in series with a neoprene pad as described in Specification
       B with the same deflection specified for the mountings or hangers.




Vibration Control Supports                                                               15070 – 1
INDEFINITE QUANTITY TERM CONTRACT                                                REVISED July 03
University of Maryland College Park

       1.    Spring element: Contained within a steel frame and designed so it can be preset
             for thrust at the factory and adjusted in the field to allow for a maximum of 0.25 inch
             (6 mm)) movement at start and stop.

       2.    Furnish the assembly with one rod and angle brackets for attachment to both the
             equipment and ductwork or the equipment and the structure.

       3.    Horizontal restraints: Attached at the centerline of thrust and symmetrically on
             either side of the unit.

PART 3 – EXECUTION

3.1    INSTALLATION, GENERAL

 A.    Adjust vibration control supports as recommended by manufacturer to eliminate
       transmission of vibration to building structure or other systems.

 B.    Replace springs that become permanently deformed with new springs.

 C.    Provide 0.25-inch structural plate sized as required between isolator and equipment.

3.2    FAN VIBRATION CONTROL

 A.    On floors above grade: Provide Specification C mounting and with static deflection as
       scheduled below:

                  Fan RPM                         Minimum Static Deflection

                  500 and over                             1.75
                  375 to 499                               2.50
                  300 to 374                               2.75
                  225 to 299                               3.75
                  175 to 224                               4.75

 B.    Suspended from structure: Provide open spring hanger, selected for weight, with
       minimum 1.0 inch static deflection.

 C.    On slab on grade: Provide mounting with minimum 0.35 inch static deflection, and steel
       base with integral motor slide rails.

       1.    Arrangement 9 fans and utility sets: Specification G base may be omitted.

3.3    AIR-HANDLING UNIT VIBRATION CONTROL

 A.    Isolators for air handling units may be provided as part of the unit (internal isolation) as
       specified in the section, Air Handling Units with Coils, but shall meet the requirements of
       this section.

 B.    On floors above grade: Provide spring isolation mounting, having at least 1.75 inch static
       deflection, required to properly support unit and its accessories as recommended by the
       air-handling unit manufacturer.

       1.    Unit with fan section isolated from coil and filter section:

             a.      Provide spring isolation mounting under fan and motor only, bolted to
                     equipment support (housekeeping pad).



Vibration Control Supports                                                                15070 – 1
INDEFINITE QUANTITY TERM CONTRACT                                              REVISED July 03
University of Maryland College Park


             b.    Provide closed spring mounts on each side between fan and coil section to
                   control fan section thrust upon fan start-up.

 C.    Suspended from structure: Provide spring isolation hanger, selected for weight, with
       minimum 1.0 inch static deflection.

 D.    On slab on grade: Provide spring mounting with at least 0.35 inch (89 mm) static
       deflection.

3.4    COMPRESSOR VIBRATION CONTROL

 A.    Compressor units for automatic temperature control (ATC) system or other use, except
       refrigeration, on floor slab on earth. Rubber mount neoprene pads.

3.5    PUMP VIBRATION CONTROL

 A.    Pumps mounted on floors above grade: Closed spring isolation base with springs with at
       least 1.75 inch (45 mm) static deflection.

 B.    Pumps mounted on floor slab on earth: Install without isolation base.

3.6    VIBRATION CONTROLS ON PIPING

 A.    Floor-mounted piping to pump: Spring vibration isolator consistent with mounting of
       nearest isolated equipment.

 B.    Piping: Provide open spring vibration control supports in first three hangers at both the
       suction and discharge of pumps, chillers, compressors, and condensing units, and for the
       first three hangers on water and steam pipes connected to air handling units. The static
       deflection shall be the same as specified for the mountings under the connected
       equipment.

       1.    If piping is connected to equipment mounted on slab on grade and hangs from
             structure under occupied spaces, the first three hangers shall have at least 0.75
             inch (19 mm) deflection for pipe sizes up to and including NPS 3 (DN 80), 1.5 inch
             (38 mm) deflection for pipe sizes up to and including NPS 6 (DN 150) and 2.5 inch
             (64 mm) deflection thereafter.

       2.    Other hangers and mounts shall have a minimum spring deflection of 0.75 inch.

       3.    Locate vibration control supports in hanger rods as close to the overhead supports
             as practical. On supports with double rods, use two vibration control supports.

                                          END OF SECTION




Vibration Control Supports                                                            15070 – 1
INDEFINITE QUANTITY TERM CONTRACT                                                         REVISED July 03
University of Maryland College Park


                                             SECTION 15075

                                  MECHANICAL IDENTIFICATION


PART 1 GENERAL

1.1    SUMMARY

        A.      Section Includes:
               1.      Nameplates.
               2.      Tags.
               3.      Stencils.
               4.      Pipe markers.
               5.      Ceiling tacks.
               6.      Labels.
               7.      Lockout devices.

       B.      Related Sections:
               1.      Section 09900 - Paints and Coatings: Execution requirements for painting
                       specified by this section.
               2.      Section 15120 – Piping Specialties.

1.2    REFERENCES

        A.      American Society of Mechanical Engineers:
               1.     ASME A13.1 - Scheme for the Identification of Piping Systems.

        B.      National Fire Protection Association:
               1.     NFPA 99 - Standard for Health Care Facilities.

1.3    SUBMITTALS

        A.       Section 01330 Submittals.

        B.      Product Data: Submit manufacturers catalog literature for each product required.

        C.      Shop Drawings: Submit list of wording, symbols, letter size, and color coding for
                mechanical identification and valve chart and schedule, including valve tag number,
                location, function, and valve manufacturer's name and model number.

        D.      Samples: Submit two sizes of each product used on project.

        E.      Manufacturer's Installation Instructions: Indicate installation instructions, special
                procedures, and installation.

        F.      Manufacturer's Certificate: Certify products meet or exceed specified requirements.




Mechanical Identification                                                                          15075 - 1
INDEFINITE QUANTITY TERM CONTRACT                                                     REVISED July 03
University of Maryland College Park


1.4    CLOSEOUT SUBMITTALS

        A.      Execution Requirements: Closeout procedures.

        B.      Project Record Documents: Record actual locations of tagged valves; include valve tag
                numbers.

1.5    QUALITY ASSURANCE

        A.      Conform to NFPA 99 requirements for labeling and identification of medical gas piping
                systems and accessories.

        B.      Conform to ASME A13.1 for color scheme for identification of piping systems and
                accessories

        C.      Maintain one copy of each document on site.

1.6    QUALIFICATIONS

        A.      Manufacturer: Company specializing in manufacturing products specified in this section
                with minimum three years experience.

        B.      Installer: Company specializing in performing Work of this section with minimum three
                years experience.

1.7    FIELD MEASUREMENTS

        A.      Verify field measurements prior to fabrication.

1.8    EXTRA MATERIALS

        A.       Execution Requirements: Spare parts and maintenance products.

        B.      Furnish two containers of spray-on adhesive.


PART 2 PRODUCTS

2.1    NAMEPLATES

        A.      Manufacturers:
               1.    Craftmark Identification Systems.
               2.    Safety Sign Co. Model .
               3.    Seton Identification Products Model .


        B.      Product Description: Laminated three-layer plastic with engraved black letters on light
                contrasting background color.




Mechanical Identification                                                                      15075 - 2
INDEFINITE QUANTITY TERM CONTRACT                                                      REVISED July 03
University of Maryland College Park


2.2    TAGS

               1.      Laminated three-layer plastic with engraved black letters on light contrasting
                       background color. Tag size minimum 1-1/2 inches diameter.

               2.      Brass with stamped letters; tag size minimum 1-1/2 inches diameter.

        B.      Information Tags:
               1.     Clear plastic with printed "Danger," "Caution," or "Warning" and message; size
                      3-1/4 x 5-5/8 inches with grommet and self-locking nylon ties.

        C.      Tag Chart: Typewritten letter size list of applied tags and location in anodized aluminum
                frame.

2.3    STENCILS

        A.      Stencils: With clean cut symbols and letters of following size:
               1.      Up to 2 inches Outside Diameter of Insulation or Pipe: 1/2 inch high letters.
               2.      2-1/2 to 6 inches Outside Diameter of Insulation or Pipe: 1-inch high letters.
               3.      Over 6 inches Outside Diameter of Insulation or Pipe:1-3/4 inches high letters.
               4.      Ductwork and Equipment: 1-3/4 inches high letters.

        B.      Stencil Paint: semi-gloss enamel, colors and lettering size conforming to ASME A13.1.

2.4    PIPE MARKERS

        A.      Color and Lettering: Conform to ASME A13.1.

        B.      Plastic Pipe Markers:

               1.      Factory fabricated, flexible, semi-rigid plastic, preformed to fit around pipe or
                       pipe covering. Larger sizes may have maximum sheet size with spring fastener.

        C.      Plastic Tape Pipe Markers:

               1.      Flexible, vinyl film tape with pressure sensitive adhesive backing and printed
                       markings.

        D.      Plastic Underground Pipe Markers:

               1.      Bright colored continuously printed plastic ribbon tape, minimum 6 inches wide
                       by 4 mil thick, manufactured for direct burial service.

2.5    CEILING TACKS

        A.      Description: Steel with 3/4 inch diameter color-coded head.

        B.      Color code as follows:
               1.      HVAC equipment: Yellow.




Mechanical Identification                                                                       15075 - 3
INDEFINITE QUANTITY TERM CONTRACT                                                         REVISED July 03
University of Maryland College Park


               2.      Fire dampers/smoke dampers: Red.
               3.      Plumbing valves: Green.
               4.      Heating/cooling valves: Blue.

2.6    LABELS

        A.      Description: Laminated Mylar], size 1.9 x 0.75 inches , adhesive backed with printed
                identification.

2.7    LOCKOUT DEVICES

        A.      Lockout Hasps:

               1.      Anodized aluminum hasp with erasable label surface; size minimum 7-1/4 x 3
                       inches

        B.      Valve Lockout Devices:

               1.      Steel device preventing access to valve operator, accepting lock shackle.


PART 3 EXECUTION

3.1    PREPARATION

        A.      Degrease and clean surfaces to receive adhesive for identification materials.

        B.      Prepare surfaces for stencil painting.

3.2    INSTALLATION

        A.      Apply stencil painting in accordance with painting Section

        B.      Install identifying devices after completion of coverings and painting.

        C.      Install plastic nameplates with corrosive-resistant mechanical fasteners, or adhesive.

        D.      Install labels with sufficient adhesive for permanent adhesion and seal with clear
                lacquer. For unfinished canvas covering, apply paint primer before applying labels.

        E.      Install tags using corrosion resistant chain. Number tags consecutively by location.

        F.      Install underground plastic pipe markers 6 to 8 inches below finished grade, directly
                above buried pipe.

        G.      Identify air handling units, pumps, heat transfer equipment, tanks, and water treatment
                devices with plastic nameplates Identify in-line pumps and other small devices with
                tags.




Mechanical Identification                                                                        15075 - 4
INDEFINITE QUANTITY TERM CONTRACT                                                       REVISED July 03
University of Maryland College Park


        H.      Identify control panels and major control components outside panels with plastic
                nameplates.

        I.      Identify valves in main and branch piping with tags.

        J.      Identify air terminal units and radiator valves with numbered tags.

        K.      Tag automatic controls, instruments, and relays. Key to control schematic.

        L.      Identify piping, concealed or exposed, with plastic tape pipe markers. Use tags on piping
                3/4 inch diameter and smaller. Identify service, flow direction, and pressure. Install in
                clear view and align with axis of piping. Locate identification not to exceed 20 feet on
                straight runs including risers and drops, adjacent to each valve and tee, at each side of
                penetration of structure or enclosure, and at each obstruction.

        M.      Identify ductwork with stenciled painting. Identify with air handling unit identification
                number and area served. Locate identification at air handling unit, at each side of
                penetration of structure or enclosure, and at each obstruction.

        N.      Provide ceiling tacks to locate valves or dampers above T-bar type panel ceilings.
                Locate in corner of panel closest to equipment.




                                          END OF SECTION




Mechanical Identification                                                                        15075 - 5
INDEFINITE QUANTITY TERM CONTRACT                                              REVISED July 03
University of Maryland, College Park

                        SECTION 15080 – MECHANICAL INSULATION

PART 1 – GENERAL

1.1    SECTION INCLUDES

 A.    Definitions and general requirements applicable to the insulation systems specified in
       “Related Sections.”

1.2    RELATED SECTIONS

 A.    Pipe insulation: Section 15081.

 B.    Duct insulation: Section 15082.

 C.    Equipment insulation: Section 15083.

 D.    Firestop System: Section 01841

 E.    Paints and Coatings: Section 09900

 F.    Mechanical Identification: Section 15075

 G.    Hangers and Supports: Section 15060

1.3    DEFINITIONS

 A.    Ceiling space: The space between the ceiling and the floor of an air-conditioned space
       above.

 B.    Roof space: The space between the ceiling and the roof, where building insulation is
       located at the roof level, or the space between the ceiling and the floor of a non-air
       conditioned space above.

 C.    Attic space: The space between the ceiling and the roof, where building insulation is
       located at the ceiling level.

 D.    Air-conditioned areas or spaces: Areas or spaces where the occupied room temperature
       is maintained between 65 and 80 degrees F (18.3 and 26.7 degrees C).

 E.    Concealed insulation shall include work:

       1.    Above ceilings.

       2.    In crawl spaces and tunnels.

       3.    Where furred in and in pipe chases.

 F.    Exposed insulation shall include work:

       1.    In all rooms and areas.

       2.    In mechanical equipment rooms or spaces.

       3.    In storage rooms.




Mechanical Insulation                                                                  15080 - 1
INDEFINITE QUANTITY TERM CONTRACT                                               REVISED July 03
University of Maryland, College Park

1.4    QUALITY ASSURANCE

 A.    Perform work in strict accordance with the building, fire and safety codes of the state,
       county or city in which the work is performed.

 B.    Insulation, including fittings and butt strips, jackets, facings, and accessories such as
       adhesives, mastics, cements, tapes and cloth, shall have a fire and smoke hazard rating
       and label as tested by ASTM E 84, NFPA 255, and UL 73, not exceeding Flame Spread
       25, Fuel Contributed 50, Smoke Developed 50.

 C.    All insulation and accessories shall be free of asbestos.

1.5    DELIVERY, STORAGE, AND HANDLING

 A.    Deliver insulation and accessory products in manufacturers’ wrapping or cartons,
       identified on the exterior and bearing labels showing conformance to flame and smoke
       rating requirements.

PART 2 – PRODUCTS

2.1    MATERIALS

 A.    Refer to sections listed in “Related Sections”.

PART 3 – EXECUTION

Not Used.

                                       END OF SECTION




Mechanical Insulation                                                                   15080 - 2
INDEFINITE QUANTITY TERM CONTRACT                                              REVISED July 03
University of Maryland College Park

                             SECTION 15081 – PIPE INSULATION

PART 1 – GENERAL

1.1    SECTION INCLUDES

 A.    Pipe insulation for the piping systems listed in the schedule at the end of this section.

 B.    Work of this section includes:

       1.    Insulation for new piping installed under this contract.

       2.    Patching existing insulation where removed to make connections to existing piping.

       3.    Patching existing insulation damaged during demolition and construction.

1.2    RELATED SECTIONS

 A.    Mechanical Insulation requirements: Section 15080.

 B.    Paints and Coatings: Section 09900.

 C.    Pipe Hangers and Supports: Section 15060.

1.3    SUBMITTALS

 A.    General: Comply with Section 01330.

 B.    Schedule of products: Each type of insulation and accessory, with manufacturer’s name
       and material name and number. Identify locations for use, thickness of material, type of
       jacket, vapor barrier, and method of application.

 C.    Product data: Sufficient to show that the product meets the specified requirements for
       materials, composition, and performance.

 D.    Samples required only upon request.

1.4    QUALITY CONTROL SUBMITTALS

 A.    Manufacturer’s instructions: Recommended accessory materials and products;
       installation instructions

1.5    QUALITY ASSURANCE

 A.    Meet requirements specified in Section 15080.

 B.    Installers shall be mechanics skilled in this trade.

1.6    DELIVERY, STORAGE, AND HANDLING

 A.    Meet requirements specified in Section 15080.

PART 2 – PRODUCTS

2.1    ACCEPTABLE MANUFACTURERS


Pipe Insulation                                                                           15081 - 1
INDEFINITE QUANTITY TERM CONTRACT                                             REVISED July 03
University of Maryland College Park

 A.    The listed manufacturers and particular products are intended to set a standard for
       materials, composition, and performance. Products of other manufacturers may be
       proposed as permitted by the provisions of the article “Product Substitutions” in Section
       01631.

 B.    Fiberglass insulation:

       Owens-Corning Fiberglass.
       Knauf Fiber Glass GmbH.
       Johns Manville

 C.    Coatings, adhesives, and fabrics:

       Foster Products Corporation, an H.B. Fuller Company.
       Childers Products Company.
       Manville Building Materials Group.
       Rock Wool Manufacturing Company.

2.2    FIBERGLASS PIPE INSULATION

 A.    Fiberglass: Nominal four lb density, K value of 0.22 at 75 degrees F mean temperature.
       Operating temperature -20 to 500 degrees F.

 B.    All-service jacket (ASJ): Factory-applied, fire-retardant, vapor-barrier foil/scrim/kraft
       jacket. All-service jacket with self-sealing lap (ASJ-SSL) is acceptable as Contractor’s
       option.

       1.    Tape: Matching jacket, pressure-sensitive.

 C.    Fittings and valves: One-piece molded polyvinyl-chloride fitting covers with factory-precut
       fiberglass inserts.

2.3    ADHESIVES

 A.    Joints, fittings, and general application:

       1.    Fiberglass insulation: Foster “Spark-Fas” 85-20.

       2.    Flexible elastomeric insulation: Armstrong 520.

 B.    Lagging adhesive: Polyvinyl acetate adhesive, equal to Foster “Lagfas” 81-42W.

2.4    MASTICS AND COATINGS:

 A.    Bituminous mastic: Fed. Spec. SS-C-153, Type I.

 B.    Insulating and finishing cement: Mineral fiber cement with a hydraulic-setting binder,
       conforming to ASTM C 449.

 C.    Vapor barrier coating:

       1.    On fiberglass insulation: Foster “Vapor-Fas” 30-15.

 D.    Finish coating for fiberglass insulation or lagging: Washable, abrasion-resistant, coating
       equal to Foster “Sealfas” 30-36.


Pipe Insulation                                                                         15081 - 2
INDEFINITE QUANTITY TERM CONTRACT                                             REVISED July 03
University of Maryland College Park

2.5    LAGGING AND REINFORCING TEXTILES

 A.    Canvas: Eight ounces/sq. yd., fire retardant treated.

 B.    Glass cloth and tape: MIL-C-20079. Tape: Type II, Class 3, 4.5 ounce/sq. yd. Cloth:
       Type I, Class 1, untreated.

2.6    FASTENERS

 A.    Aluminum bands: 0.75 inches wide and 0.020 inches thick.

 B.    Staples: Outward clinching type, Type 304 or 316 stainless steel.

 C.    Pins: Serrated shaft, Type 304 or 316 stainless steel.

2.7    PROTECTIVE PIPE JACKETS

 A.    Aluminum: Smooth aluminum 0.016-inch-thick, lined with a bonded moisture barrier,
       equal to Childers “Aluminum Roll Jacketing.”

       1.    Aluminum straps: Same alloy as jacket.

       2.    Elbows: Childers “Univers-Ell Jacs”.

       3.    Tees: Childers “Tee-Jacs.”

       4.    Fitting covers: Manufacturer’s factory-fabricated aluminum covers suitable to size
             of fitting and thickness of insulation.

 B.    Canvas: Finished with lagging coating, uniform, smooth, and ready for painting.

PART 3 – EXECUTION

3.1    INSTALLATION, GENERAL

 A.    Install in accordance with the Minimum Thickness Schedule at the end of this section, as
       modified by specifications for each location and type.

 B.    Fiberglass insulation: Apply insulation to a neat and smooth finish. Comply with
       manufacturers’ recommendations and installation instructions. Butt all joints tightly and
       apply a brush coat of joint adhesive to all laps and joint strips. Seal of fasten laps in
       jacketing as specified for location, pulling jacketing tight and smooth.

 C.    Flexible elastomeric insulation: Apply by slipping seamless sections of tubing over the
       end of the piping, wherever possible. Use slit tubing only as necessary. Seal joints and
       slit seams with joint adhesive.

       1.    Fittings and valves: Field fabricated from insulation same thickness as on the
             piping. Use manufacturer’s miter tubes and boxes and templates.

 D.    Tape and seal all terminations of insulation.

 E.    Staple, tape, or seal plastic pipe fitting covers by methods recommended by
       manufacturer.




Pipe Insulation                                                                         15081 - 3
INDEFINITE QUANTITY TERM CONTRACT                                              REVISED July 03
University of Maryland College Park
 F.    Coordination with pipe hangers and supports:

       1.    For the systems listed below, insulation shall be continuous through hanger. Install
             pipe covering protection shield with thickness of structural insulation insert equal,
             under load, to that of adjoining insulation. Shield and saddle support are specified
             in Section 15060, Hangers and Supports.

             Domestic cold water
             Chilled water

       2.    For the systems listed below, insulation may be continuous through hanger,
             installed as above, or hanger may be sized for pipe. Butt insulation at hangers and
             make smooth joints fitting around the hanger.

             Domestic hot water
             Recirculated hot water
             Steam
             Steam condensate return
             Heating water

       3.    For all insulated piping exterior of building heated space, insulation shall be
             continuous through hangers or supports.

3.2    INSTALLING INSULATION AT PENETRATIONS

 A.    Where the following insulated piping systems pass through sleeves or openings in
       partitions and floors, the insulation shall be continuous through the sleeves and openings.
       See Firestopping specifications, for coordinating insulation and fire protection sealing.

       Chilled water
       Domestic cold water

 B.    Where the following piping systems pass through sleeves and openings in floors and fire
       rated walls, the fire-barrier sealant system shall be completed, as specified in Section
       07841 Firestop Systems, prior to application of the insulation.

       Domestic hot water
       Domestic recirculated water
       Heating water
       Steam
       Steam condensate return

3.3    INSTALLING CANVAS JACKET

 A.    Locations:

       1.    All pipe insulation in mechanical rooms.

       2.    Canvas jacket is not required where aluminum jacket is required.

3.4    INSTALLING ALUMINUM JACKET

 A.    Locations: All insulated pipe specified for weather protection.

 B.    Secure jacket with aluminum bands on 12-inch (305-mm) centers and at circumferential
       joints.


Pipe Insulation                                                                          15081 - 4
INDEFINITE QUANTITY TERM CONTRACT                                               REVISED July 03
University of Maryland College Park

 C.    Place longitudinal joints to face a wall and overhead joints to face the ceiling

3.5    INSTALLING HEATING PIPING INSULATION

 A.    Piping systems:

       Steam
       Steam condensate return
       Heating water

 B.    Insulation: Fiberglass pipe insulation with jacket, in accordance with Minimum Thickness
       Schedule. Staple or seal ASJ laps at Contractor’s option.

 C.    Fittings and valves: Cover with prefabricated fitting covers.

 D.    Do not cover unions and flanges, except at steam pressure stations cover with same
       thickness as piping.

3.6    INSTALLING CHILLED WATER PIPING INSULATION

 A.    Piping systems: Insulate supply and return with fiberglass insulation in accordance with
       Minimum Thickness Schedule. Seal ASJ lap to form vapor barrier.

 B.    At all valves, flanges, and fittings, and at intervals of not more than 21 feet (6400 mm) on
       continuous runs of pipe, make a joint in insulation. Finish and seal ends with vapor
       barrier on both sides of joint.

 C.    Fittings, valves, and flange: Cover with prefabricated fitting covers.

 D.    Casings and headers of cooling coils: Fiberglass of thickness equal to that of adjoining
       pipe insulation, finished with vapor-barrier jacket.

 E.    Insulation on strainers: Removable without damage.

3.7    INSTALLING PLUMBING PIPING INSULATION

 A.    Insulation: Fiberglass, thickness in accordance with Minimum Thickness Schedule.

 B.    Fittings, valves and flanges: Cover with prefabricated fitting covers.

 C.    Seal or finish to maintain vapor barrier on the following systems:

       Aboveground domestic cold water
       Air-conditioning unit condensate drains
       Vertical and horizontal storm water piping

 D.    Seal or staple ASJ as contractor’s option: Aboveground tempered, recirculating and
       domestic hot water.

3.8    INSTALLING EXTERIOR PIPING INSULATION

 A.    Locations: Piping systems exterior of building heated space.

       Heating water
       Chilled water


Pipe Insulation                                                                           15081 - 5
INDEFINITE QUANTITY TERM CONTRACT                                                REVISED July 03
University of Maryland College Park
        Domestic hot water
        Domestic recirculated hot water

        1.      Where indicated on the drawings, install electric heat cable before applying
                insulation.

  B.    Insulation: As specified for the same system interior, minimum thickness 2 inches (50
        mm), or 0.5 inches (13 mm) thicker than scheduled for interior insulation on similar
        system, whichever is greater.

  C.    Start insulation 30 inches (760 mm) below grade, 30 inches (760 mm) below roof or 30
        inches (760 mm) inside exterior wall. Secure insulation with aluminum bands on 12-inch
        (305-mm) centers.

  D.    Where insulated piping is exposed to weather, apply the following protective jackets:

        1.      Over fiberglass insulation:

                a.    Aluminum jacket: Apply with an overlap of 4 inches (100 mm) on longitudinal
                      and cross-joint seams. Direction of overlap shall prevent entrance of water,
                      with longitudinal joint in horizontal piping 45 degrees down from horizontal.
                      Install jacket tight to insulation and secure in place with aluminum straps at
                      all joints and on minimum 12-inch (305-mm) centers. Coat seams with
                      mastic approved by jacket manufacturer.

3.9     SCHEDULES

  A.    Minimum Thickness Schedule: Thicknesses scheduled are for aboveground, interior
        piping. See “Installing Exterior Piping Installation” for additional thicknesses required.

                                MINIMUM THICKNESS SCHEDULE
                                      PIPE SIZES (NPS)
  Piping System         Fluid Temp.   Connections   1&  1-1/4 to           2-1/2 to   5&6       8 and
      Types                Range      Up to 1-1/4  less    2                  4                 larger
                        (Degrees F)

Steam up to 24 psi        201-250             1.0        1.5       1.5        2.0      2.0       2.0
Steam 25 to 60 psi        251-305             1.5        2.0       2.5        2.5      3.0       3.0
Steam 61 psi and          306 and             1.5        2.5       2.5        3.0      3.5       3.5
above                      above
Steam condensate            ANY               1.0        1.0       1.0        1.5      1.5       2.0
return
Pumped                      ANY               ---        1.0       1.0        1.5      1.5       2.0
condensate
Heating water             120-200             1.0        1.5       1.5        1.5      1.5       2.0
Chilled water              40-55              0.5        1.5       1.5        1.5      1.5       1.5
Domestic water             56-180                        1.0       1.0        1.0      1.0       1.0
Storm water                  ---              ---        1.0       1.0        1.0      1.0       1.0


                                          END OF SECTION




Pipe Insulation                                                                              15081 - 6
INDEFINITE QUANTITY TERM CONTRACT                                              REVISED July 03
University of Maryland College Park
                             SECTION 15082 – DUCT INSULATION

PART 1 – GENERAL

1.1     SECTION INCLUDES

  A.    Insulation applied to ducts.

  B.    Work of this section includes:

        1.    Insulation for new ductwork installed under this contract.

        2.    Patching existing insulation where removed to make connections to existing
              ductwork.

        3.    Patching existing insulation damaged during demolition and construction.

1.2     RELATED SECTIONS

  A.    Paints and Coatings: Section 09900.

  B.    Definitions of concealed, exposed, and other terms: Section 15080.

1.3     SUBMITTALS

  A.    General: Comply with Section 01330.

  B.    Material list: Each type of insulation and accessory, with manufacturer’s name and
        material name and number. Identify locations for use, thickness of material, type of
        jacket, vapor barrier, and method of application.

  C.    Product data: Sufficient to show that the product meets the specified requirements for
        materials, composition, and performance.

  D.    Samples required only upon request.

1.4     QUALITY ASSURANCE

  A.    Meet requirements specified in Section 15080.

  B.    Installer qualifications: Firm with at least 5 years successful installation experience with
        mechanical insulation. Work shall be performed by mechanics skilled in this trade.

1.5     DELIVERY, STORAGE, AND HANDLING

  A.    Meet requirements specified in Section 15080.

PART 2 – PRODUCTS

2.1     ACCEPTABLE MANUFACTURERS

  A.    The listed manufacturers and particular products are intended to set a standard for
        materials, composition, and performance. Products of other manufacturers may be
        proposed as permitted by the provisions of the article “Product Substitutions” in Section
        01631.




Duct Insulation                                                                             15082 - 1
INDEFINITE QUANTITY TERM CONTRACT                                             REVISED July 03
University of Maryland College Park
  B.    Insulation and accessories:

        Armstrong World Industries.
        Certain-Teed Corporation.
        Foster Products Corporation, an H.B. Fuller Company.
        Knauf Fiber Glass Gmbh.
        Owens-Corning Fiberglass.
        Schuller Mechanical Insulations.

2.2     MATERIALS

  A.    Flexible fiberglass insulation: ASTM C 553, Type I, Class B-3, K-factor of 0.27 at 75
        degrees F mean temperature, of thicknesses specified in Part 3 below, nominal density at
        least 1 lb per cubic foot, with vapor-barrier jacket of reinforced kraft and aluminum foil.

  B.    Rigid fiberglass insulation: ASTM C 612, Class 2, nominal density at least 6 lbs per cubic
        foot, with K-factor of 0.22 at 75 degrees F mean temperature, of thicknesses specified in
        Part 3 below, with factory-applied jacket composed of a reinforced white kraft and
        aluminum-foil laminate with the white kraft facing out, equal to Certain Teed Products
        Corp. IB 600-ASJ.

  C.    Canvas: Eight ounces/sq.yd., fire-retardant treated. Provide washable, abrasion-
        resistant finish coating equal to Foster “Sealfas” 30-36.

  D.    Adhesives for duct insulation inside buildings: Recommended by insulation manufacturer
        for the application, equal to Foster Products 85-20.

  E.    Mechanical fasteners: Perforated, 2 by 2 inches by 0.023-inch (0.6-mm)- thick, zinc-
        coated steel with one-inch wide by 0.023-inch thick diamond-notched tongue or No.11
        gauge wire nail, complete with locking plates, holding plates, fiber washers, or speed
        washers as required. Provide neoprene-rubber base adhesive, Type 3. Adhesive and
        fastener shall be equal to the products of Stic-Klip Manufacturing Co.

  F.    Glass cloth and tape: MIL-C-20079. Tape: Type II, Class 3, 4.5 ounces/sq. yd. Cloth:
        Type I, Class 1, untreated.

  G.    Self-adhesive tape: Manufacturer’s standard tape of material matching insulation jacket,
        with peelable backing and pressure-sensitive adhesive.

PART 3 – EXECUTION

3.1     INSTALLATION

  A.    Apply insulation in a neat and workmanlike manner and in accordance with
        manufacturer’s printed instructions. Butt joints tightly and apply a brush coat of adhesive
        to laps and joint strips. Seal laps, pulling jacketing tight and smooth. Tape joints with
        self-adhesive tape matching the service jacket.

  B.    Tape and seal terminations of insulation to prevent “dusting”.

3.2     INSULATION INSIDE BUILDINGS

  A.    Concealed ducts: Flexible fiberglass insulation. Adhere with adhesive in sufficient
        quantities to prevent sagging. On ducts more than 30 inches wide, secure insulation on
        the underside with mechanical fasteners on 18 inch maximum centers. Butt insulation
        with facing overlapping at least 2 inches and sealed with vapor-barrier adhesive.


Duct Insulation                                                                           15082 - 2
INDEFINITE QUANTITY TERM CONTRACT                                                REVISED July 03
University of Maryland College Park
        Adhesive must cover full 2-inch overlap to form an airtight seal. Seal breaks and
        punctures with vapor-barrier tape and same type of adhesive.

  B.    Exposed ducts: Rigid fiberglass insulation, fastened with mechanical fasteners.
        Fasteners shall be spaced 12 to 18 inches on center with a minimum of two rows per side
        of duct. Secure insulation in place with washers firmly embedded in insulation.

        1.    Install corner beads on external corners.

        2.    Seal joints. Apply canvas jacket. Cover with two coats of finish coating, ready for
              painting. Fastener caps shall match the jacket.

  C.    For curved surfaces, such as exposed elbows, score or cut insulating board in narrow
        strips as necessary for snug and neat fit.

3.3     INSULATION THICKNESS

  A.    Outdoor air ducts: 1.5 inches. Where necessary to conceal the standing seams and
        reinforcing angles on exposed ducts, 2 inches.

  B.    Exhaust and pressure relief air ducts to roof ventilators or to exterior openings: 1.5
        inches, starting at connection to roof curb or opening and running back to ATC dampers
        but not less than 10 feet.

  C.    Exhaust ducts from air-conditioned areas, in roof or attic space: 1.5 inches.

  D.    Ductwork which transmits combination cooled and heated air or untempered ventilating
        air shall be insulated as specified below for cooling systems.

  E.    Cooling Systems:

        1.    Supply air ducts: 1.5 inches. Where necessary to conceal the standing seams and
              reinforcing angles on exposed ducts, 2 inches.

              Exceptions:

              a.    Lined or unlined supply ducts in attic spaces: 2 inches.

              b.    Supply ducts, where exposed in areas they serve, shall not be insulated.

        2.    Return air ducts: 1.5 inches. Where necessary to conceal standing seams and
              reinforcing angles on exposed ducts, 2 inches.

              Exceptions:

              a.    Return ducts in attic spaces: 2 inches.

              b.    Return ducts in ceiling spaces of air-conditioned areas shall not be insulated.
                    Note that insulation is required for return ducts in roof spaces.

              c.    Return ducts exposed in areas they serve shall not be insulated.

              d.    Return ducts in return-air ceiling plenums shall not be insulated.

        3.    Transfer ducts shall be insulated as specified for return ducts.




Duct Insulation                                                                          15082 - 3
INDEFINITE QUANTITY TERM CONTRACT                                                REVISED July 03
University of Maryland College Park
  F.    Heating systems:

        1.    Supply air ducts: 1.5 inches. Where necessary to conceal the standing seams and
              reinforcing angles on exposed ducts, 2 inches.

              Exceptions:

              a.    Supply ducts in attic spaces: 2 inches.

              b.    Supply ducts exposed in areas they serve shall not be insulated.

        2.    Return ducts shall not be insulated.

              Exceptions:

              a.    Return ducts in attic spaces: 2 inches.

        3.    Transfer ducts shall be insulated as specified for return ducts.

  G.    Casings and headers of reheat coils shall be insulated with the same thickness as
        adjacent ductwork.

                                       END OF SECTION




Duct Insulation                                                                          15082 - 4
INDEFINITE QUANTITY TERM CONTRACT                                                     REVISED July 03
University of Maryland College Park

                           SECTION 15083 – EQUIPMENT INSULATION

PART 1 – GENERAL

1.1    SECTION INCLUDES

  A.   Equipment insulation as scheduled at end of section.

  B.   Work of this section includes:

       1.    Insulation for new equipment installed under this contract.

       2.    Patching existing insulation where removed to make connections to existing equipment.

       3.    Patching existing insulation damaged during demolition and construction.

1.2    RELATED SECTIONS

  A.   Definitions and general insulation requirements: Section 15080.

1.3    SUBMITTALS

  A.   General: Comply with Section 01330.

  B.   Material list: Each type of insulation and accessory, with manufacturer’s name and material name
       and number. Identify locations for use, thickness of material, type of jacket, vapor barrier, and
       method of application.

  C.   Samples required only upon request.

  D.   Manufacturer’s installation instructions and system recommendations.

1.4    QUALITY ASSURANCE

  A.   Meet requirements specified in Section 15080.

  B.   Installer qualifications: Firm with at least 5 years successful installation experience with
       mechanical insulation. Work shall be performed by mechanics skilled in this trade.

1.5    DELIVERY, STORAGE, AND HANDLING

  A.   Meet requirements specified in Section 15080.

PART 2 – PRODUCTS

2.1    ACCEPTABLE MANUFACTURERS

  A.   The listed manufacturers and particular products are intended to set a standard for materials,
       composition, and performance. Products of other manufacturers may be proposed as permitted by
       the provisions of the article “Product Substitutions” in Section 01631.

  B.   Insulation and accessories:

       Armstrong World Industries
       Certain-Teed Corporation.


Equipment Insulation                                                                             15083 - 1
INDEFINITE QUANTITY TERM CONTRACT                                                    REVISED July 03
University of Maryland College Park
       Foster Products Corporation, an H.B. Fuller Company.
       Knauf Fiber Glass GmbH.
       Owens-Corning Fiberglass.
       Schuller Mechanical Insulations

2.2    EQUIPMENT INSULATION

  A.   Insulation types refer to the Equipment Insulation Schedule at the end of the section. Thicknesses
       are scheduled.

  B.   Type A, insulation for heated surfaces up to 400 degrees F, flat and curved 24 inches or more in
       diameter: ASTM C 612, Class 1 rigid fiberglass equipment insulation, K factor 0.26 at 75 degrees
       F mean temperature, density 10 lbs per cubic foot. For surfaces less than 24 inches diameter, and
       pump casings, use segmented sections.

  C.   Type B, insulation for cooled surfaces: Flexible elastomeric insulation, ASTM C 534, Type II,
       with vapor barrier facing.

  D.   Insulating and finishing cement: Mineral fiber cement with a hydraulic-setting binder, conforming
       to ASTM C 449.

  E.   Insulation compounds: Provide adhesives, cements, sealers, mastics, and protective finishes
       recommended by manufacturers of insulation for each particular application.

  F.   Insulation accessories: Provide staples, bands, wire, wire mesh, tape, corner angles, anchors, and
       stud pins recommended by manufacturer of insulation for each particular application.

  G.   Jacket material: Pre-sized glass cloth, not less than 7.8 ounces per sq.yd.

PART 3 – EXECUTION

3.1    INSTALLATION, GENERAL

  A.   Insulate equipment as specified, except equipment with factory-applied insulation. Follow
       manufacturer’s instructions.

  B.   Provide removable insulation sections to cover parts of equipment which must be opened or
       removed periodically for maintenance, such as vessel covers, fasteners, flanges, pump casings and
       strainers, frames, and accessories. On large vessels, provide additional external support.

       1.    On hot equipment, insulate equipment surface, leaving flanges, bolts, and other accessories
             exposed.

       2.    On cold equipment, or equipment used for both heating and cooling, insulate flanges and
             accessories, and make insulation separately removable.

  C.   Maintain the integrity of vapor barriers.

  D.   Do not insulate boiler manholes, handholes, cleanouts, ASME stamp, or manufacturer’s
       nameplate. Bevel edges at interruptions.

  E.   On breechings, install insulation on standoffs, with required air space.

3.2    INSTALLATION ON COLD SURFACES

  A.   Type in accordance with Equipment Insulation Schedule.


Equipment Insulation                                                                           15083 - 2
INDEFINITE QUANTITY TERM CONTRACT                                                        REVISED July 03
University of Maryland College Park

  B.       Cut, score, or miter insulation to fit contours of equipment. Secure with a full coating of adhesive.
           Provide weld pins or stick clips with washers spaced 18 inches apart. Stagger joints between
           layers.

  C.       Fill voids with small pieces of insulation applied with adhesive on all sides to maintain complete
           vapor barrier. Seal joints, breaks, and punctures in facing.

  D.       Insulation on chilled water pumps: For each pump, construct an insulated box assembly with
           removable cover, or access panels.

           1.       Size: To surround pump housing, drive shaft, and piping, including suction diffuser, and
                    allowing clearance for draining and adjustment of pump shaft seal.

           2.       Construction: 18-gauge galvanized steel; formed with edge returns so that insulation is not
                    exposed; provided with openings for drive shaft and pipes; no part resting on pump.

           3.       Access: Design box for disassembly or access. Provide fasteners such as clips or cam
                    latches, so that access is possible without the use of tools.

           4.       Insulation: Secured to inside of box with pins and adhesive.

3.3        INSTALLATION ON HOT SURFACES

  A.       Type in accordance with Equipment Insulation Schedule.

  B.       Cut, score, or miter insulation to fit contour of equipment and secure with 0.5 by 0.015 inch
           galvanized steel bands on 12-inch centers. Use weld pins or stick clips with washers for flat
           surfaces, spaced 18 inches apart. Stagger joints where possible and fill voids with insulating
           cement. Apply wire mesh over entire surface of equipment and corner beads to all outside corners
           and edges.

3.4        INSTALLING FINISHED SURFACE

  A.       Apply a coat of insulating cement to smooth out surface. When cement is dry, apply a coating of
           lagging adhesive. Embed a layer of glass cloth, overlapping all seams 2 inches, and finish with a
           second coat of same adhesive.

3.5        EQUIPMENT INSULATION SCHEDULE


                EQUIPMENT                        INSULATION TYPE                   THICKNESS (INCHES)
                Heat exchangers                            A                                 1.5
                 Air separators                            A                                 1.5
         Steam condensate tanks                            A                                 1.5
       Heating water expansion tank                        A                                 1.5
       Chilled water expansion tank                        B                          2 layers each 0.75

                                                END OF SECTION




Equipment Insulation                                                                                15083 - 3
INDEFINITE QUANTITY TERM CONTRACT                                                      REVISED July 03
University Of Maryland College Park


                                         SECTION 15105

                                       PIPES AND TUBES


PART 1 GENERAL

1.1   SUMMARY

      A.     Section Includes: Pipe and pipe fittings for the following systems:
             1.      Heating water piping, buried.
             2.      Heating water piping, above ground.
             3.      Glycol piping, buried.
             4.      Glycol piping, above ground.
             5.      Chilled water piping, buried.
             6.      Chilled water piping, above ground.
             7.      Condenser water piping, buried.
             8.      Condenser water piping, above ground.
             9.      Radiant heating piping.
             10.     Equipment drains and over flows.
             11.     Engine exhaust.
             12.     Low pressure steam piping.
             13.     Low pressure steam condensate piping.
             14.     Medium and high pressure steam piping.
             15.     Medium and high pressure steam condensate piping.
             16.     Refrigerant piping.
             17.     Unions, flanges, and couplings.

      B.     Related Sections:
             1.      Section 07841- Firestopping: Product requirements for firestopping for
                     placement by this section.
             2.      Section 08311- Access Doors and Panels: Product requirements for access doors
                     for placement by this section.
             3.      Section 09900 - Paints and Coatings: Product and execution requirements for
                     painting specified by this section.
             4.      Section 15060 - Hangers and Supports: Product requirements for pipe hangers
                     and supports [and firestopping] for placement by this section.
             5.      Section 15070 - Mechanical Sound, Vibration, and Seismic Control: Product
                     requirements for vibration isolation for placement by this section.
             6.      Section 15080 - Mechanical Insulation: Product requirements for piping
                     insulation for placement by this section.
             7.      Section 15110 - Valves: Product requirements for valves for placement by this
                     section.
             8.      Section 15120 - Piping Specialties: Product requirements for piping specialties
                     for placement by this section.
             9.      Section 15122- Piping Expansion Compensation: Product requirements for
                     piping expansion compensation devices for placement by this section.




                                                                                     Pipes and Tubes
                                                                                            15105 - 1
INDEFINITE QUANTITY TERM CONTRACT                                                   REVISED July 03
University Of Maryland College Park


1.2   REFERENCES

      A.     American Society of Mechanical Engineers:
             1.     ASME B16.3 - Malleable Iron Threaded Fittings.
             2.     ASME B16.18 - Cast Copper Alloy Solder Joint Pressure Fittings.
             3.     ASME B16.22 - Wrought Copper and Copper Alloy Solder Joint Pressure
                    Fittings.
             4.     ASME B16.26 - Cast Copper Alloy Fittings for Flared Copper Tubes.
             5.     ASME B31.1 - Power Piping.
             6.     ASME B31.5 - Refrigeration Piping.
             7.     ASME B31.9 - Building Services Piping.
             8.     ASME Section IX - Boiler and Pressure Vessel Code - Welding and Brazing
                    Qualifications.

      B.     American Society for Testing and Materials:
             1.     ASTM A53 - Standard Specification for Pipe, Steel, Black and Hot-Dipped,
                    Zinc-Coated, Welded and Seamless.
             2.     ASTM A234/A234M - Standard Specification for Piping Fittings of Wrought
                    Carbon Steel and Alloy Steel for Moderate and High Temperature Service.
             3.     ASTM B32 - Standard Specification for Solder Metal.
             4.     ASTM B88 - Standard Specification for Seamless Copper Water Tube.
             5.     ASTM B280 - Standard Specification for Seamless Copper Tube for Air
                    Conditioning and Refrigeration Field Service.
             6.     ASTM D1785 - Standard Specification for Poly (Vinyl Chloride) (PVC) Plastic
                    Pipe, Schedules 40, 80, and 120.
             7.     ASTM D2235 - Standard Specification for Solvent Cement for Acrylonitrile-
                    Butadiene-Styrene (ABS) Plastic Pipe and Fittings.
             8.     ASTM D2241 - Standard Specification for Poly (Vinyl Chloride) (PVC)
                    Pressure-Rated Pipe (SDR Series).
             9.     ASTM D2310 - Standard Classification for Machine-Made "Fiberglass" (Glass-
                    Fiber-Reinforced Thermosetting-Resin) Pipe.
             10.    ASTM D2466 - Standard Specification for Poly (Vinyl Chloride) (PVC) Plastic
                    Pipe Fittings, Schedule 40.
             11.    ASTM D2467 - Standard Specification for Poly (Vinyl Chloride) (PVC) Plastic
                    Pipe Fittings, Schedule 80.
             12.    ASTM D2680 - Standard Specification for Acrylonitrile-Butadiene-Styrene
                    (ABS) and Poly (Vinyl Chloride) (PVC) Composite Sewer Piping.
             13.    ASTM D2683 - Standard Specification for Socket-Type Polyethylene Fittings for
                    Outside Diameter-Controlled Polyethylene Pipe and Tubing.
             14.    ASTM D2751 - Standard Specification for Acrylonitrile-Butadiene-Styrene
                    (ABS) Sewer Pipe and Fittings.
             15.    ASTM D2855 - Standard Practice for Making Solvent-Cemented Joints with
                    Poly (Vinyl Chloride) (PVC) Pipe and Fittings.
             16.    ASTM D3309 - Standard Specification for Polybutylene (PB) Plastic Hot- and
                    Cold-Water Distribution Systems.
             17.    ASTM F477 - Standard Specification for Elastomeric Seals (Gaskets) for Joining
                    Plastic Pipe.




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INDEFINITE QUANTITY TERM CONTRACT                                                        REVISED July 03
University Of Maryland College Park


             18.     ASTM F845 - Standard Specification for Plastic Insert Fittings for Polybutylene
                     (PB) Tubing.
             19.     ASTM F876 - Standard Specification for Crosslinked Polyethylene (PEX)
                     Tubing.
             20.     ASTM F877 - Standard Specification for Crosslinked Polyethylene (PEX) Plastic
                     Hot-and Cold-Water Distribution Systems.

      C.     American Welding Society:
             1.     AWS A5.8 - Specification for Filler Metals for Brazing and Braze Welding.
             2.     AWS D1.1 - Structural Welding Code - Steel.

      D.     American Water Works Association:
             1.     AWWA C105 - American National Standard for Polyethylene Encasement for
                    Ductile-Iron Pipe Systems.
             2.     AWWA C110 - American National Standard for Ductile-Iron and Grey-Iron
                    Fittings, 3 in. through 48 in. (75 mm through 1200 mm), for Water and Other
                    Liquids.
             3.     AWWA C111 - American National Standard for Rubber-Gasket Joints for
                    Ductile-Iron Pressure Pipe and Fittings.
             4.     AWWA C151 - American National Standard for Ductile-Iron Pipe, Centrifugally
                    Cast, for Water.

1.3   SYSTEM DESCRIPTION

      A.     Where more than one piping system material is specified, provide compatible system
             components and joints. Provide flanges, union, and couplings at locations requiring
             servicing.

      B.     Provide unions, flanges, and couplings downstream of valves and at equipment or
             apparatus connections.

      C.     Provide non-conducting dielectric connections whenever jointing dissimilar metals in
             open systems.

      D.     Do not use direct welded or threaded connections to valves, equipment or other
             apparatus.

1.4   SUBMITTALS

      A.     Section 01330 - Submittal Procedures: Submittal procedures.

      B.     Shop Drawings: Indicate layout of piping systems, including equipment, critical
             dimensions, and sizes. Indicate schematic layout of refrigeration system, including
             equipment, critical dimensions, and sizes.

      C.     Product Data: Submit data on pipe materials and fittings. Submit manufacturers catalog
             information.




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INDEFINITE QUANTITY TERM CONTRACT                                                        REVISED July 03
University Of Maryland College Park


      D.     Design Data: Indicate pipe sizes. Indicate pipe sizing methods. Indicate calculations used.
             Submit sizing methods/calculations.

      E.     Test Reports: Indicate results of refrigerant leak test and acid test.

      F.     Welders’ Certificate: Include welders’ certification of compliance with[ASME Section
             IX.

1.5   QUALITY ASSURANCE

      A.     Perform Work in accordance with ASME B31.1 and ASME B31.9 code for installation
             of piping systems and ASME Section IX for welding materials and procedures.

      B.     Maintain one copy of each document on site.

1.6   QUALIFICATIONS

      A.     Manufacturer: Company specializing in manufacturing products specified in this section
             with minimum three years experience.

      B.     Installer: Company specializing in performing Work of this section with minimum three
             years experience.

      C.     Design piping systems under direct supervision of Professional Engineer experienced in
             design of this Work.

1.7   PRE-INSTALLATION MEETINGS

      A.     Section 01300 - Administrative Requirements: Pre-installation meeting.

      B.     Convene minimum one week prior to commencing work of this section.

1.8   DELIVERY, STORAGE, AND HANDLING

      A.     Section 01600 - Product Requirements: Product storage and handling requirements.

      B.     Furnish temporary end caps and closures on piping and fittings. Maintain in place until
             installation.

      C.     Protect piping from entry of foreign materials by temporary covers, completing sections
             of the work, and isolating parts of completed system Protect

      D.     Maintain charge of refrigeration components until installation in piping system.

1.9   ENVIRONMENTAL REQUIREMENTS

      A.     Section 01600 - Product Requirements.

      B.     Do not install underground piping when bedding is wet or frozen.



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INDEFINITE QUANTITY TERM CONTRACT                                                        REVISED July 03
University Of Maryland College Park


1.10   FIELD MEASUREMENTS

       A.    Verify field measurements prior to fabrication.

1.11   COORDINATION

       A.    Section 01300 - Administrative Requirements: Requirements for coordination.

       B.    Coordinate installation of buried piping with trenching.

1.12   MAINTENANCE MATERIALS

       A.    Section 01700 - Execution Requirements: Spare parts and maintenance products.

       B.    Furnish two refrigeration oil test kits each containing everything required for conducting
             one test.


PART 2 PRODUCTS

2.1    HEATING WATER AND GLYCOL PIPING, BURIED

       A.    Steel Pipe: ASTM A53, Schedule 40, with AWWA C105 polyethylene jacket, or double
             layer, half-lapped 10 mil (0.25 mm) polyethylene tape].
             1.       Fittings: ASTM A234/A234M, forged steel welding type with double layer, half-
                      lapped 10 mil (0.25 mm) polyethylene tape.
             2.       Joints: Threaded for pipe 2 inch (50 mm) and smaller; welded for pipe 2-1/2
                      inches (65 mm) and larger.

       B.    Copper Tubing: ASTM B88M, Type K, annealed.
             1.     Fittings: ASME B16.22, wrought copper.
             2.     Joints: Solder, lead free, ASTM B32, 95-5 tin-antimony, or tin and silver, with
                    melting range 430 to 535 degrees F (220 to 280 degrees C).
             3.     Casing: Closed glass cell insulation.
             4.     HEATING WATER AND GLYCOL PIPING, ABOVE GROUND

       C.    Steel Pipe: ASTM A53, Schedule 40, [0.375 inch (10 mm) wall for sizes 12 inch (300
             mm) and larger,] black.
             1.      Fittings: ASME B16.3, malleable iron or ASTM A234/A234M, forged steel
                     welding type fittings.
             2.      Joints: Threaded, or welded.

       D.    Copper Tubing: [ASTM B88] [ASTM B88M], L, hard drawn.
             1.     Fittings: ASME B16.18, cast brass, or ASME B16.22 solder wrought copper.

             2.      Tee Connections: Mechanically extracted collars with notched and dimpled
                     branch tube.
             3.      Joints: Solder, lead free, ASTM B32, 95-5 tin-antimony, or tin and silver, with
                     melting range 430 to 535 degrees F (220 to 280 degrees C).



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INDEFINITE QUANTITY TERM CONTRACT                                                       REVISED July 03
University Of Maryland College Park


2.2   CHILLED WATER PIPING, BURIED

      A.     Steel Pipe: ASTM A53, Schedule 40, black with AWWA C105 polyethylene jacket, or
             double layer, half-lapped 10 mil (0.25 mm) polyethylene tape.
             1.      Fittings: ASTM A234/A234M forged steel welding type with double layer, half-
                     lapped 10 mil (0.25 mm) polyethylene tape.
             2.      Joints: Threaded for pipe 2 inch (50 mm) and smaller; welded for pipe 2-1/2
                     inches (65 mm) and larger.

      B.     Copper Tubing: [ASTM B88] [ASTM B88M], Type L annealed.
             1.     Fittings: ASME B16.22, wrought copper.
             2.     Joints: Solder, lead free, ASTM B32, 95-5 tin-antimony, or tin and silver, with
                    melting range 430 to 535 degrees F (220 to 280 degrees C).][Braze, AWS A5.8
                    BCuP silver/phosphorus/copper alloy with melting range 1190 - 1480 degrees F
                    (640 - 805 degrees C).]
             3.     Casing: Closed glass cell insulation.

      C.     Ductile Iron Pipe: AWWA C151.
             1.      Fittings: AWWA C110, ductile iron and standard thickness.
             2.      Joints: AWWA C111, rubber gasket with 3/4 inch (19 mm) diameter rods.

      D.     PVC Pipe: ASTM D1785, Schedule 40, [and Schedule 80 for sizes 8 inch (200 mm) and
             larger,] or ASTM D2241, SDR 21 or 26.
             1.       Fittings: ASTM D2466, or ASTM D2467, PVC.
             2.       Joints: ASTM D2855, solvent weld.

      E.     FRP Pipe: ASTM D2310, fiberglass reinforced thermosetting resin plastic.
             1.     Fittings: Fiberglass reinforced epoxy.
             2.     Joints: Hub-and-spigot with rubber gasket.CHILLED WATER PIPING, ABOVE
                    GROUND

      F.     Steel Pipe: ASTM A53, Schedule 40, [0.375 inch (10 mm) wall for sizes 12 inch (300
             mm) and larger,] black.
             1.      Fittings: ASME B16.3, malleable iron or ASTM A234/A234M, forged steel
                     welding type.
             2.      Joints: Threaded or welded.

      G.     Copper Tubing: [ASTM B88] [ASTM B88M], Type L, hard drawn.

      H.     Fittings: ASME B16.18, cast brass, or ASME B16.22, solder wrought copper.



             1.     Tee Connections: Mechanically extracted collars with notched and dimpled
                    branch tube.
             2.     Joints: [Solder, lead free, [ASTM B32,] 95-5 tin-antimony, or tin and silver, with
                    melting range 430 to 535 degrees F (220 to 280 degrees C).] [Braze, AWS A5.8
                    BCuP silver/phosphorus/copper alloy with melting range 1190 - 1480 degrees F
                    (640 - 805 degrees C).]


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INDEFINITE QUANTITY TERM CONTRACT                                                     REVISED July 03
University Of Maryland College Park


      I.     PVC Pipe: ASTM D1785, Schedule 40, [and Schedule 80 for sizes 8 inch (200 mm) and
             larger,] or ASTM D2241, SDR 21 or 26.
             1.       Fittings: ASTM D2466 or ASTM D2467, PVC.
             2.       Joints: ASTM D2855, solvent weld.

      J.     FRP Pipe: ASTM D2310, fiberglass reinforced thermosetting resin plastic.
             1.     Fittings: Fiberglass reinforced epoxy.
             2.     Joints: [Hub-and-spigot with rubber gasket.] [Non-threaded, union or flanged
                    coupling.]

2.3   CONDENSER WATER PIPING, BURIED

      A.     Steel Pipe: ASTM A53, Schedule 40, mm) black with AWWA C105 polyethylene
             jacket, or double layer, half-lapped 10 mil (0.25 mm) polyethylene tape.
             1.       Fittings: ASTM A234/A234M forged steel welding type with double layer, half-
                      lapped 10 mil (0.25 mm) polyethylene tape.
             2.       Joints: Threaded for pipe 2 inch (50 mm) and smaller; welded for pipe 2-1/2
                      inches (65 mm) and larger.

      B.     Copper Tubing: ASTM B88ASTM B88M, Type K, annealed.
             1.     Fittings: ASME B16.22, wrought copper.
             2.     Joints: Solder, lead free, ASTM B32, 95-5 tin-antimony, or tin and silver, with
                    melting range 430 to 535 degrees F (220 to 280 degrees C). Braze, AWS A5.8
                    BCuP silver/phosphorus/copper alloy with melting range 1190 - 1480 degrees F
                    (640 - 805 degrees C).

      C.     Ductile Iron Pipe: AWWA C151.
             1.      Fittings: AWWA C110, ductile iron, standard thickness.
             2.      Joints: AWWA C111, rubber gasket with 3/4 inch (19 mm) diameter rods.

      D.     PVC Pipe: ASTM D1785, Schedule 40, [and Schedule 80 for sizes 8 inch (200 mm) and
             larger,] or ASTM D2241, SDR 21 or 26.
             1.       Fittings: ASTM D2466 or ASTM D2467, PVC.
             2.       Joints: ASTM D2855, solvent weld.

      E.     FRP Pipe: ASTM D2310, fiberglass reinforced thermosetting resin plastic.
             1.     Fittings: Fiberglass reinforced epoxy.
             2.     Joints: Hub-and-spigot with rubber gasket.or threaded, union or flanged
                    coupling.]

2.4   CONDENSER WATER PIPING, ABOVE GROUND

      A.     Steel Pipe: ASTM A53, Schedule 40, black.

      B.     Fittings: ASME B16.3, malleable iron or ASTM A234/A234M, forged steel welding
             type.
             1.       Joints: Threaded or welded.

      C.     Copper Tubing: [ASTM B88] [ASTM B88M], Type L hard drawn.


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INDEFINITE QUANTITY TERM CONTRACT                                                       REVISED July 03
University Of Maryland College Park


             1.      Fittings: ASME B16.18, cast brass, or ASME B16.22 solder wrought copper.
             2.      Tee Connections: Mechanically extracted collars with notched and dimpled
                     branch tube.
             3.      Joints: Solder, lead free, ASTM B32, 95-5 tin-antimony, or tin and silver, with
                     melting range 430 to 535 degrees F (220 to 280 degrees C).Braze, AWS A5.8
                     BCuP silver/phosphorus/copper alloy with melting range 1190 - 1480 degrees F
                     (640 - 805 degrees C).

      D.     PVC Pipe: ASTM D1785, Schedule 40, and Schedule 80 for sizes 8 inch (200 mm) and
             larger, or ASTM D2241, SDR 21 or 26.
             1.       Fittings: ASTM D2466 or ASTM D2467, PVC.
             2.       Joints: ASTM D2855, solvent weld.

      E.     FRP Pipe: ASTM D2310, fiberglass reinforced thermosetting resin plastic.
             1.     Fittings: Fiberglass reinforced epoxy.
             2.     Joints: Hub-and-spigot with rubber gasket. Non-threaded, union or flanged
                    coupling.

2.5   RADIANT HEATING PIPING

      A.     Copper Tubing: [ASTM B88] [ASTM B88M], Type L annealed.
             1.     Fittings: ASME B16.22, wrought copper.
             2.     Joints: Solder, lead free, ASTM B32, 95-5 tin-antimony, or tin and silver, with
                    melting range 430 to 535 degrees F (220 to 280 degrees C). Braze, AWS A5.8
                    BCuP silver/phosphorus/copper alloy with melting range 1190 - 1480 degrees F
                    (640 - 805 degrees C).

      B.     Polybutylene Pipe: ASTM D3309, 100 psig (690 kPa) at 180 degrees F (82 degrees C)
             and 200 psig (1380 kPa) at 73 degrees F (23 degrees C), gray color.
             1.     Fittings: ASTM F845 PB, or brass or copper.
             2.     Joints: Mechanical compression fittings or insert

      C.     Polyethylene Pipe: ASTM F876 and ASTM F877, cross-linked polyethylene, 100 psig
             (690 kPa) operating pressure at 180 degrees F (82 degrees C).
             1.     Fittings: Brass and copper.
             2.     Joints: Mechanical compression fittings.


2.6   EQUIPMENT DRAINS AND OVERFLOWS

      A.     Steel Pipe: ASTM A53, Schedule 40 galvanized.
             1.      Fittings: Galvanized cast iron, or ASME B16.3 malleable iron.
             2.      Joints: Threaded, or grooved mechanical couplings.

      B.     Copper Tubing: [ASTM B88] [ASTM B88M], Type L, hard drawn.
             1.     Fittings: ASME B16.18, cast brass, or ASME B16.22 solder wrought copper.
             2.     Joints: Solder, lead free, ASTM B32, 95-5 tin-antimony, or tin and silver, with
                    melting range 430 to 535 degrees F (220 to 280 degrees C).




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INDEFINITE QUANTITY TERM CONTRACT                                                      REVISED July 03
University Of Maryland College Park


       C.    PVC Pipe: ASTM D1785, Schedule 40, and Schedule 80 for sizes 8 inch (200 mm) and
             larger,] or ASTM D2241, SDR 21 or 26.
             1.       Fittings: ASTM D2466 or ASTM D2467, PVC.
             2.       Joints: ASTM D2855, solvent weld.

       D.    ABS Pipe: ASTM D2680 or ASTM D2751.
             1.    Fittings: ASTM D2751.
             2.    Joints: ASTM D2235, solvent weld.

2.7    ENGINE EXHAUST

       A.    Steel Pipe: ASTM A53, Schedule 40, [0.375 inch (10 mm) wall for sizes 12 inch (300
             mm) and larger,] black.
             1.      Fittings: ASME B16.3, malleable iron or ASTM A234/A234M, forged steel
                     welding type.
             2.      Joints: Threaded for pipe 2 inch (50 mm) and smaller; welded for pipe 2-1/2
                     inches (65 mm) and larger.

2.8    LOW PRESSURE STEAM PIPING, BURIED - 15 PSIG (103 kPa) MAXIMUM

2.9    LOW PRESSURE STEAM PIPING, ABOVE GROUND (15 PSIG (103 kPa) MAXIMUM)

       A.    Steel Pipe: ASTM A53, Schedule 40, black
             1.      Fittings: ASME B16.3 malleable iron Class 125
             2.      Joints: Threaded, or welded.

       B.    Copper Tubing: [ASTM B88] [ASTM B88M], Type L, hard drawn.
             1.     Fittings: ASME B16.18, cast brass, or ASME B16.22 wrought copper.
             2.     Joints: Solder, lead free, ASTM B32, 95-5 tin-antimony, or tin and silver, with
                    melting range 430 - 535 degrees F (220 to 280 degrees C).Braze, AWS A5.8,
                    BCuP silver/phosphorus/copper alloy with melting range 1190 to 1480 degrees F
                    (640-805 degrees C).
             3.     LOW PRESSURE STEAM CONDENSATE PIPING, BURIED

2.10   LOW PRESSURE STEAM CONDENSATE PIPING, ABOVE GROUND

       A.    Steel Pipe: ASTM A53, Schedule 80, black.
             1.      Fittings: ASME B16.3 malleable iron Class 125
             2.      Joints: Threaded, or welded.

       B.    Copper Tubing: [ASTM B88] [ASTM B88M], Type L, hard drawn.
             1.     Fittings: ASME B16.18, cast brass, or ASME B16.22 wrought copper.
             2.     Joints: Solder, lead free, ASTM B32, 95-5 tin-antimony, or tin and silver, with
                    melting range 430 - 535 degrees F (220 to 280 degrees C).Braze, AWS A5.8,
                    BCuP silver/phosphorus/copper alloy with melting range 1190 to 1480 F (640-
                    805 degrees C).




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INDEFINITE QUANTITY TERM CONTRACT                                                       REVISED July 03
University Of Maryland College Park


2.11   MEDIUM AND HIGH PRESSURE STEAM PIPING, BURIED - 150 PSIG (1034 kPa)
       MAXIMUM

2.12   MEDIUM AND HIGH PRESSURE STEAM PIPING, ABOVE GROUND - (150 PSIG (1034
       kPa) MAXIMUM)

       A.    Steel Pipe: ASTM A53, Schedule 80, black.
             1.      Fittings: ASME B16.3 malleable iron Class 250
             2.      Joints: Threaded or welded.

       B.    Copper Tubing: [ASTM B88] [ASTM B88M], Type L, hard drawn.
             1.     Fittings: ASME B16.18, cast brass, or ASME B16.22 wrought copper fittings.
             2.     Joints: Solder, lead free, ASTM B32, 95-5 tin-antimony, or tin and silver, with
                    melting range 430 - 535 degrees F (220 to 280 degrees C). Braze, AWS A5.8,
                    BCuP silver/phosphorus/copper alloy with melting range 1190 to 1480 degrees F
                    (640-805 degrees C).]

2.13   MEDIUM AND HIGH PRESSURE STEAM CONDENSATE PIPING, BURIED

2.14   MEDIUM AND HIGH PRESSURE STEAM CONDENSATE PIPING, ABOVE GROUND

       A.    Steel Pipe: ASTM A53, Schedule 80, black.
             1.      Fittings: ASME B16.3 malleable iron Class 125
             2.      Joints: Threaded, or welded.

       B.    Copper Tubing: [ASTM B88] [ASTM B88M], Type L, hard drawn.
             1.     Fittings: ASME B16.18, cast brass, or ASME B16.22 wrought copper.
             2.     Joints: [Solder, lead free, [ASTM B32,] 95-5 tin-antimony, or tin and silver, with
                    melting range 430 - 535 degrees F (220 to 280 degrees C).] [Braze, AWS A5.8,
                    BCuP silver/phosphorus/copper alloy with melting range 1190 to 1480 degrees F
                    (640-805 degrees C).]

2.15   REFRIGERANT PIPING

       A.    Copper Tubing: ASTM B280, Type ACR hard drawn [or annealed].
             1.     Fittings: ASME B16.22 wrought copper.
             2.     Joints: Braze, AWS A5.8 BCuP silver/phosphorus/copper alloy with melting
                    range 1190 to 1480 degrees F (640 to 805 degrees C).

       B.    Copper Tubing to 7/8 inch (22 mm) OD: [ASTM B88] [ASTM B88M], Type K,
             annealed.
             1.     Fittings: ASME B16.26 cast copper.
             2.     Joints: Flared.


2.16   UNIONS, FLANGES, AND COUPLINGS

       A.    Unions for Pipe 2 inches (50 mm) and Smaller:
             1.     Ferrous Piping: 150 psig (1034 kPa) malleable iron, threaded.



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INDEFINITE QUANTITY TERM CONTRACT                                                         REVISED July 03
University Of Maryland College Park


             2.      Copper Pipe: Bronze, soldered joints.

      B.     Flanges for Pipe 2-1/2 inches (65 mm) and Larger:
             1.      Ferrous Piping: 150 psig (1034 kPa) forged steel, slip-on.
             2.      Copper Piping: Bronze.
             3.      Gaskets: 1/16 inch (1.6 mm) thick preformed neoprene.

      C.     Grooved and Shouldered Pipe End Couplings:
             1.     Housing Clamps: Malleable iron [galvanized] to engage and lock designed to
                    permit some angular deflection, contraction, and expansion.
             2.     Sealing Gasket: C-shape elastomer composition

      D.     Dielectric Connections: Union with galvanized or plated steel threaded end, copper solder
             end, water impervious isolation barrier.


PART 3 EXECUTION

3.1   EXAMINATION

      A.     Section 01300 - Administrative Requirements: Verification of existing conditions before
             starting work.

      B.     Verify trenches are ready to receive piping.

3.2   PREPARATION

      A.     Ream pipe and tube ends. Remove burrs.

      B.     Remove scale and dirt on inside and outside before assembly.

      C.     Prepare piping connections to equipment with flanges or unions.

      D.     Keep open ends of pipe free from scale and dirt. Protect open ends with temporary plugs
             or caps.

3.3   INSTALLATION

      A.     Install glycol, condenser water, and engine exhaust piping in accordance with ASME
             B31.9.[Install heating water and chilled water piping in accordance with ASME B31.9.
             Install steam supply and steam condensate return piping in accordance with ASME B31.1
             ASME B31.9. Install refrigerant in accordance with ASME B31.5.

      B.     Route piping parallel to building structure and maintain gradient.

      C.     Install piping to conserve building space, and not interfere with use of space.

      D.     Group piping whenever practical at common elevations.




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INDEFINITE QUANTITY TERM CONTRACT                                                          REVISED July 03
University Of Maryland College Park


      E.     Sleeve pipe passing through partitions, walls and floors. Refer to Section 15060.

      F.     Install piping to allow for expansion and contraction without stressing pipe, joints, or
             connected equipment. Refer to Section 15180.

      G.     Provide access where valves and fittings are not accessible. Coordinate size and location
             of access doors with Section 08311.

      H.     Slope piping and arrange systems to drain at low points. Use eccentric reducers to
             maintain top of pipe level.
             1.      Slope steam piping one inch in 40 feet (0.25 percent) in direction of flow. Use
                     eccentric reducers to maintain bottom of pipe level.
             2.      Slope steam condensate piping one inch in 40 feet (0.25 percent). Provide drip
                     trap assembly at low points and before control valves. Run condensate lines from
                     trap to nearest condensate receiver. Provide loop vents over trapped sections.

      I.     Arrange refrigeration piping to return oil to compressor. Provide traps and loops in
             piping, and where necessary provide double risers. Slope horizontal piping 0.40 percent
             in direction of flow.

      J.     Flood refrigerant piping system with nitrogen when brazing.

      K.     Where pipe support members are welded to structural building framing, scrape, brush
             clean, and apply one coat of zinc rich primer to welds.

      L.     Prepare unfinished pipe, fittings and supports ready for finish painting. Refer to Section
             09900.

      M.     Insulate piping and equipment; refer to Sections 15080 and 15081.

      N.     Install valves in accordance with Section 15110.

      O.     Install piping specialties in accordance with Section 15120.

      P.     Follow ASHRAE 15 procedures for charging and purging of systems and for disposal of
             refrigerant.

3.4   FIELD QUALITY CONTROL

      A.     Section [01400 - Quality Requirements: Testing and Inspection Services] [01700 -
             Execution Requirements: Testing, adjusting, and balancing].

      B.     Test refrigeration system in accordance with ASME B31.5.

      C.     Pressure test system with dry nitrogen to 200 psig (1470 kPa). [Perform final tests at 27
             inches (92 kPa) vacuum and 200 psig (1470) kPa) with electronic leak detector. Test to
             no leakage.




                                                                                         Pipes and Tubes
                                                                                              15105 - 12
INDEFINITE QUANTITY TERM CONTRACT                       REVISED July 03
University Of Maryland College Park


                                      END OF SECTION




                                                       Pipes and Tubes
                                                            15105 - 13
INDEFINITE QUANTITY TERM CONTRACT                                                       REVISED July 03
University of Maryland College Park

                                      SECTION 15110 – VALVES

PART 1 – GENERAL

1.1      SECTION INCLUDES

  A.     Valves for various piping systems.

1.2      RELATED SECTIONS

  A.     Piping installation and testing: Section 15050.

  B.     Piping systems: Section 15180.

  C.     Valves: Section 15120.

1.3      SUBMITTALS

  A.     General: Comply with Section 01330.

  B.     Product data: For each type of valve. Include body material, valve design, pressure and
         temperature classification, end connection details, seating materials, trim material and
         arrangement, dimensions and required clearances, and installation instructions.

  C.     Maintenance data: For inclusion in operation and maintenance manual specified in and Section
         01770. Include manufacturer’s instructions for adjusting, servicing, disassembling, and repairing.

  D.     Valve charts: Furnish valve charts typed on 8.5 by 11-inch (216 by 279-mm) bond paper,
         showing locations of all manual and automatic control valves, and flow meters. Include:

         1.    Number

         2.    Location

         3.    Service

         4.    Function

         5.    Area served

  E.     Valve numbering system shall be approved by the Owner prior to final submittal. Place one copy
         of approved chart in a plastic envelope and mount on wall where directed. Provide another copy
         for each of the Operating and Maintenance Manuals.

PART 2 – PRODUCTS

2.1      ACCEPTABLE MANUFACTURERS

  A.     Valves shall be the products of one of the listed manufacturers, meeting specified requirements.
         Named models are included to indicate materials and charatcteristics.

  B.     Gate and globe valves

         Stockham Valve & Fittings
         Walworth Co.
         Jenkins Bros.


Valves                                                                                              15110 - 1
INDEFINITE QUANTITY TERM CONTRACT                                                     REVISED July 03
University of Maryland College Park

         Crane Co.
         Lunkenheimer Co.
         Hammond Valve Co.
         Milwaukee Valve Co.

  C.     Ball valves

         Walworth Co.
         Stockham Valve & Fittings
         Milwaukee Valve Co.
         Watts Regulator Co.

  D.     Butterfly valves

         Centerline – Mark Controls Corporation
         Dezurik, A Unit of General Signal
         Walworth Inc.
         Milwaukee Valve Co.

  E.     Check valves

         Combination Pump and Valve Co.
         Mueller Steam Specialty
         Milwaukee Valve Co.

  F.     Balancing valves

         Ball or butterfly: See above.

  G.     Backwater valves

         Zurn, Inc.
         Josam Manufacturing Co.
         Jay R. Smith
         Jenkins Bros., a corporation
         Ames Company, Inc.

  H.     Hose connections

         Zurn, Inc.
         Josam Manufacturing Co.
         Crane Co.

2.2      VALVES

  A.     General: Model numbers are provided below to set a standard for materials, quality of
         construction, and performance. Provide named products, or equal products by acceptable
         manufacturers listed above.

  B.     Gate valves:

         1.    Valves NPS 2 and smaller; Class 125, bronze construction; rising stem, solid wedge,
               threaded or soldered ends.

         2.    Valves NPS 2.5 and larger; Class 125, IBBM, 0S & Y, solid wedge, bolted bonnet, flanged
               ends.


Valves                                                                                        15110 - 2
INDEFINITE QUANTITY TERM CONTRACT                                                       REVISED July 03
University of Maryland College Park


 C.      Ball valves:

         1.    Valves NPS 2.5 (DN 65) and smaller: Class 150 SWP, bronze, two-piece body,
               conventional port, TFE seats and seals, stainless-steel ball and stem. Extension handle for
               use in insulated piping. Threaded or soldered ends. Where used for balancing, provide
               memory stop.

         2.    Valves NPS 3 (DN 80) and larger: Class 150 SWP, carbon steel body, one-piece flanged
               construction, conventional port, stainless-steel ball and stem, TFE seat and packing.
               Extension handle for use in insulated piping.

 D.      Butterfly valves, NPS 2.5 (DN 65) and larger: Bubble-tight shutoff in both directions at 200 psi,
         and maintains bubble-tight rating when flange on one side is removed (dead-end service); Class
         150 suitable for use with ASME B 16.5 Class 125 and 150 flanges; ASTM A 126 cast-iron lug
         body, stainless-steel stem; field-replaceable EPDM sleeve and stem seals, capable of withstanding
         225 degrees F (107 degrees C).

         1.    Disk type: Aluminum bronze.

         2.    Operator:

               a.       NPS 6 (DN 150) and smaller: Ten-position leverlock handle.

               b.       NPS 8 (DN 200) and larger: Gear operator. Provide chain wheel where shown on
                        drawings.

         3.    Provide extension handle where required in insulated piping.

         4.    Where used for balancing, provide memory stop.

 E.      Globe valves:

         1.    Valves NPS 2 (DN 50) and smaller: Class 125, bronze, Teflon seat disk, screw-in bonnet,
               threaded or soldered ends.

         2.    Valves NPS 2.5 (DN 65) and larger: Class 125, cast-iron disk, bolted bonnet, flanged ends.

         3.    Angle-type valves NPS 2 (DN 50) and smaller: Class 125, bronze, Teflon seat disk, screw-
               in bonnet, threaded ends.

         4.    Angle-type valves NPS 2.5 (DN 65) through NPS 8 (DN 200): Class 125, IBBM, bronze or
               bronze-faced disk, bolted bonnet, flanged ends.

 F.      Center-guided, spring-loaded silent-action type check valves:

         1.    Valves NPS 2 (DN 50) and smaller: Class 125, bronze body, Teflon disk, Teflon seat ring,
               stainless-steel stem and spring, threaded or soldered ends.

         2.    Valves NPS 2.5 (DN 65) and larger: Class 125, cast-iron body, bronze trim, stainless-steel
               spring, wafer style.

 G.      Swing check valves:

         1.    Valves NPS 2 (DN 50) and smaller: Class 125, bronze, PTFE seat, renewable disks, Y
               pattern, horizontal swing, threaded or soldered ends.


Valves                                                                                           15110 - 3
INDEFINITE QUANTITY TERM CONTRACT                                                          REVISED July 03
University of Maryland College Park


         2     Valves NPS 2.5 (DN 65) and larger: Class 125, IBBM, bolted bonnet, renewable seat and
               disk, horizontal swing, flanged ends.

  H.     Balancing valves: Ball or butterfly valves with memory stops, for locations listed in Part 3 below.

2.3      HOSE CONNECTIONS

  A.     Hose connections, general: Every hose connection shall be provided with an ASSE 1052
         backflow prevention device with two check valves, field testable, with outlet check valve capable
         of withstanding backpressure up to 125 psi (862 kPa).

         1.    Where backflow prevention device is not integral with the hydrant or bibb, but added on,
               provide a hose connection backflow preventer equal to Woodford 37HD2, for freezing and
               non-freezing conditions, brass and stainless steel.

               a.     Bushing: Threaded, designed to prevent the attachment of a hose if the check valve
                      device should be removed with O ring.

               b.     Stop collar and stop screw: Stainless-steel, preventing unauthorized removal of the
                      check valve device.

  B.     Hose bibbs: Compression type, with bronze body, stem, and bonnet, chrome-finished where
         exposed and rough brass where concealed, Class 125 WOG non-shock. Connection suitable for
         NPS ¾ (DN 20) hose. Include integral vacuum breaker (if valve is disassembled, hose cannot be
         attached).

         1.    Mounted on wall with concealed connection: Ball sillcock.

         2.    Connecting to exposed pipe: Back valve 458-Hammond or ball valve.

2.4      CHAINWHEEL ACTUATORS

  A.     Manufacturers:

         Babbitt Steam Specialty Co.
         Roto Hammer Industries, Inc.

  B.     Description: Valve actuation assembly with sprocket rim, brackets, and chain.

         1.    Sprocket rim with chain guides: Ductile iron or cast iron, of type and size required for
               valve. Include zinc coating.

         2.    Brackets: Type, number, size, and fasteners required to mount actuator on valve.

         3.    Chain: Hot-dip, galvanized steel of size required to fit sprocket rim.

PART 3 – EXECUTION

3.1      INSTALLATION, GENERAL

  A.     Install valves to be readily accessible for operation and maintenance, and with ample clearance for
         turning handles or operators.

  B.     For valves in inaccessible locations, provide access doors as specified in a related section.




Valves                                                                                              15110 - 4
INDEFINITE QUANTITY TERM CONTRACT                                                        REVISED July 03
University of Maryland College Park

  C.     Identify valves as specified in Section 15050, Basic Mechanical Materials and Methods.

         1.    Provide tags for all valves except stop valves on individual fixtures or equipment where
               their function is obvious, or where the fixture or equipment is immediately adjacent.
               Numbers shall correspond to those shown on the Valve Chart. Attach tags to valve shaft.

         2.    Provide ceiling identification tags where valves are above an accessible suspended ceiling.
               Number shall correspond to tag number.

  D.     Install chainwheel operators on valves NPS 4 (DN 100) and larger and more than 6 feet above
         floor. Extend chains to 6 feet above finished floor elevation.

3.2      INSTALLING SHUTOFF AND BALANCING VALVES

  A.     Install shutoff and balancing valves where indicated. Generally, install balancing valves in return
         lines of heating and cooling coils and elements, and shutoff valves in supply lines.

  B.     Shutoff valves for water piping shall be as follows:

         1.    Sizes NPS 2 (DN 50) and smaller: Gate or ball valves.

         2.    Sizes NPS 2.5 (DN 65) and larger: Butterfly type, complete with memory stop.

  C.     Shutoff valves for steam and steam condensate return shall be gate valves in all sizes.

  D.     Balancing valves:

         1.    Valves NPS 2 (DN 50) and smaller: Ball type, complete with memory stop.

         2.    Valves NPS 2.5 (DN 65) and larger: Butterfly type, complete with memory stop.

3.3      INSTALLING GLOBE AND CHECK VALVES

  A.     Provide globe valves where indicated.

  B.     Provide angle globe valves on steam boilers between boiler steam connection and steam header.
         Where valves are over 7 feet above floor, provide chain operators to within 6 inches of floor.

  C.     Provide center-guided, spring-loaded silent-action type check valves in pumped lines, lines subject
         to pump pressure, and vertical lines.

  D.     Provide swing-type check valves in gravity lines or horizontal domestic water lines.

3.4      INSTALLING HOSE CONNECTIONS

  A.     Drain valves: Provide interior hose bibs, NPS ¾ (DN 20) or size indicated on the drawings, at
         every low point of a water system, and where indicated.


                                             END OF SECTION




Valves                                                                                             15110 - 5
INDEFINITE QUANTITY TERM CONTRACT                                             REVISED July 03
University of Maryland College Park

                           SECTION 15120 - PIPING SPECIALTIES

PART 1 – GENERAL

1.1    SECTION INCLUDES

 A.    Specialties for piping systems.

1.2    RELATED SECTIONS

 A.    Piping: Sections 15180 and 15181.

1.3    SUBMITTALS

 A.    General: Comply with Section 01330.

 B.    Product data: For each specialty included in the work. Include rated capacities of
       selected equipment and manufacturer’s installation instructions where applicable.
       Indicate materials, finishes, dimensions, required clearances, methods of assembly of
       components; and piping and wiring connections.

PART 2 – PRODUCTS

2.1    ACCEPTABLE MANUFACTURERS

 A.    Flexible connections, 2.5 through 12 inches:

       Amber/Booth
       Flexonics
       Mason Industries, Inc.
       Garlock Mechanical Packing Division
       Dunlop, Inc.

 B.    Gaskets:

       Garlock Mechanical Packing Division
       Manville

 C.    Unions:

       Epco Sales, Inc.
       Lochinvar Water Heater Corporation
       Victaulic Company of America
       Fernco
       Dart Union Company

 D.    Water strainers:

       Mueller Steam Specialty
       Spirax Sarco Inc.
       Tate Andale, Inc. “Guardian”
       Watts Regulator Company

 E.    Backflow preventers:

       Hersey Products, represented by Mueller Company, A Grinnell Company


Piping Specialties                                                                   15120 - 1
INDEFINITE QUANTITY TERM CONTRACT                       REVISED July 03
University of Maryland College Park

       Febco Division of CMB Industries
       Wilkins
       Watts Regulator Company

 F.    High-capacity automatic air vents:

       Hoffman Controls Corporation
       Amtrol Inc.
       Spirax Sarco Inc.
       Taco, Inc.

 G.    Automatic air vents:

       ITT Bell and Gossett
       Hoffman Controls Corporation
       Taco Inc.
       Spirax Sarco Inc.

 H.    Manual air vents:

       Taco, Inc.
       ITT Bell and Gossett

 I.    Multipurpose valves:

       Taco Inc.
       ITT Bell and Gossett
       Armstrong Machine Works Inc.
       Wheatley

 J.    Water solenoid valve:

       Automatic Switch Company (ASCO)

 K.    Water pressure reducing valves:

       Spence Engineering Company Inc.
       Watts Regulator Company

 L.    Steam traps:

       Armstrong Machine Works, Inc.
       Spirax Sarco Inc.
       Illinois Specialties, Nicholson Steamtrap Inc.

 M.    Steam vacuum breakers:

       MEPCO Steam Specialties
       Watts Regulator Company
       Spirax Sarco Inc.
       Hoffman Controls Corporation

 N.    Steam strainers:

       Spirax Sarco Inc.
       MEPCO Steam Specialties


Piping Specialties                                            15120 - 2
INDEFINITE QUANTITY TERM CONTRACT                                              REVISED July 03
University of Maryland College Park

       Mueller Steam Specialty
       Watts Regulator Company
       Clark-Reliance

 O.    Steam flexible connectors:

       Flexonics Inc.
       Dunlop Inc.
       Garlock Mechanical Packing Division

 P.    Steam automatic air vents:

       Armstrong International
       Barnes and Jones
       ITT Hoffman
       Spirax Sarco

 Q.    Steam pressure-reducing valves:

       Spence Engineering Company Inc.

 R.    Chemical feeders:

       Neptune Chemical Pump Company
       Vulcan Laboratories Inc.

2.2    FLEXIBLE CONNECTIONS, WATER

 A.    Flexible connections NPS 2 (DN 50) and smaller: Equal to Flexonics Series PCS,
       stainless steel with threaded ends in steel pipe and Series PCB, bronze with solder ends
       in copper pipe.

 B.    Flexible connections NPS 2.5 through 12 (DN 65 through 300): Equal to Mason
       Industries, Inc. Type MFNC. Units shall have 150 psi flanged ends with multi-layered tire
       cord fabric and neoprene body, and shall be complete with two 0.625-inch diameter
       control rods set in isolating rubber. Angular deflection shall be 15 degrees and minimum
       bursting pressure shall be 800 psi. Allowable movements shall be in accordance with the
       following:

PIPE SIZE            LENGTH FACE       AXIAL               AXIAL                TRANSVERSE
NPS (DN)             TO FACE           COMPRESSION         ELONGATION           MOVEMENT
                     INCHES            INCHES              INCHES               INCHES
2.5 (65)             4.0               0.5                 0.375                0.375
3-8 (80-200)         6.0               0.75                0.5                  0.5

2.3    GASKETS AND UNIONS

 A.    Gaskets for flanged joints: Cross-laminated long fiber composition suitable for service,
       temperature, pressure and liquid with which they come in contact.

 B.    Unions NPS 2.5 (DN 65) and smaller: Malleable iron, equal to Dart Union Company for
       200 psi. working pressure with ground bronze seats, or soldered type brass unions of
       equal quality.

 C.    Dielectric unions:



Piping Specialties                                                                     15120 - 3
INDEFINITE QUANTITY TERM CONTRACT                                               REVISED July 03
University of Maryland College Park


       1.    General: Completely isolate dissimilar metals so that electric current is below 1
             percent of the galvanic current which would exist with metal-to-metal contact.
             Gaskets approved for the medium carried by the piping system.

       2.    Piping NPS 2.5 (DN 65) and smaller: Equal to unions manufactured by Epco
             Sales, Inc. rated at 250 psi in accordance with ASTM F 492.

       3.    Piping NPS 3 (DN 80) and larger: Equal to Epco “Model X,” (companions), half
             flange unions, between steel body flanges and copper pipe. Include bolt insulators,
             and dielectric gaskets, bolts, and nuts.

2.4    WATER SPECIALTIES

 A.    Basket-type water strainers: Cast iron, flanged, equal to Mueller No. 165, and meeting
       working pressure ratings published by Mueller. Basket: Bronze screen with 1/8-inch
       perforations.

 B.    Y-type strainers:

       1.    Equal to Spirax Sarco Model AT threaded or Model AF flanged.

       2.    For use in copper piping: Spirax Sarco Model BT threaded or Model BF flanged.

       3.    Screens in Y-type strainers: Bronze or monel having maximum 0.045-inch (12-
             mm) perforations.

 C.    Backflow preventer for domestic water service: ASSE 1013, reduced-pressure-principle
       type, equal to Hersey FRP-II or 6 CM, complete with strainer, dual check valves, relief
       valves assembly, tri-cocks, and stop valves. Where installed for fire suppression service,
       assembly shall be UL and FM approved for fire service.

 D.    High-capacity automatic air vents: For releasing air from hot or cold water lines. Float-
       operated type with minimum 7 cfm capacity.

       1.    Materials: Cast-iron body and cover; stainless-steel valve pin and seat, and float;
             gasket conforming to ASTM D 1170; high strength steel cap screws.

       2.    Operating limits: Maximum pressure 250 psig; maximum temperature 300 degrees
             F (149 degrees C); hydrostatic pressure to 350 psig.

 E.    Automatic air vents: Water vents designed for use on high pressure hot or cold water
       mains. Includes safety drain connection for discharging moisture entrained in the vented
       air. Tapped at top for 1/8-inch IPS (DN 6) built-in check valve.

       1.    Materials: Cast brass body.

       2.    Operating limits: Maximum operating pressure 150 psi; hydrostatic pressure to 450
             psi.

 F.    Manual air vents: 150 psig (1035 kPa) working pressure, 212 degrees F maximum
       operating temperature.

 G.    Multipurpose valves: Combination check, gate, and balancing valve designed for use on
       pump discharge lines, size noted on drawings. Single body is suitable for horizontal or




Piping Specialties                                                                      15120 - 4
INDEFINITE QUANTITY TERM CONTRACT                                                REVISED July 03
University of Maryland College Park

       vertical mounting. Includes adjustable memory stop and valve metering connections.
       There is no stem packing.

       1.    Materials: Cast iron body, bronze gland, stainless-steel stem sleeve, cast-iron non-
             lubricated plug, brass clapper, brass seat with elastomeric O-ring seal.

       2.    Operation: Dual O-ring seat provides leakproof closure. Gland is removable to
             replace O rings. O-ring on seat may be replaced without removing the valve from
             the line. Clapper is separately removable for service. Full open to full close is
             accomplished with one-quarter turn.

 H.    Water solenoid valves: Normally closed type, PTFE seal, 120-V coil, equal to Automatic
       Switch Co., ASCO 8210 in sizes up to NPS 3 (DN 80).

 I.    Pressure relief valves: ASME rated, NB approved, automatic reseating type conforming
       to ANSI Z21.22.

       1.    Provide straight pressure type where installed in pipe lines and for protection of
             coils and cold water vessels.

       2.    Provide combination pressure and temperature type where installed for hot water
             tanks and vessels.

 J.    Water pressure-reducing valves NPS 2 (DN 50) and smaller: Equal to Spence Model D-
       36, high-capacity, directly operated, designed for variable flow rate while maintaining
       close regulation of the reduced pressure. Construction: Single-seated, opening in the
       direction of flow, with a soft disc; cast bronze with threaded ends suitable for maximum
       inlet conditions of 300 psi at 160 degrees F. Provide proper spring for range indicated on
       the drawings. Valve shall meet ASSE Standard 1003 and MIL-V-18146.

 K.    Water pressure-reducing valves NPS 2.5 (DN 65) and larger: Equal to Spence Type D-
       34, single seated, packless for dead-end service, flanged, ANSI B16.1 Class 125, sizes
       as shown on the drawings. The valves shall prevent pressure fluctuations without the
       use of surge chambers or other cushioning devices. Delivery pressure shall be
       adjustable within a minimum range of 20 psi.

2.5    STEAM SPECIALTIES

 A.    Steam traps: Equal to Spirax Sarco float and thermostatic, Type FT, NPS 1.25 (DN 32)
       size for header drips, NPS 1 (DN 25) minimum size for main drips, and otherwise as
       indicated and to provide 2.5 times the condensing rate of the equipment drained. For
       small elements such as convectors and finned tube radiation, provide Spirax Sarco
       thermostatic Type TB-25. Provide stainless-steel seats and pins in all traps.

 B.    Thermodynamic traps: Stainless-steel body and screw-in cap; maximum operating
       pressure of 600 psig, stainless-steel disc and seat; threaded ends.

 C.    Vacuum breakers, Watts 36-A.

 D.    Strainers in steam lines: Y type, semi-steel bodies, equal to Spirax Sarco Model IT
       threaded and Model IF-125 flanged. Screens: Bronze or monel metal having 0.045-inch
       perforations for steam duty.

 E.    Flexible connections for steam piping: Equal to Flexonics Series PCS or “Guintoflex: by
       Dunlop, with flanged ends.




Piping Specialties                                                                      15120 - 5
INDEFINITE QUANTITY TERM CONTRACT                                               REVISED July 03
University of Maryland College Park

 F.    Steam automatic air vents: Float type, equal to Hoffman No. 75 for mains and No. 74 for
       small elements.

 G.    Steam pressure-reducing valves shall be pilot operated, equal to Spence Model ED,
       sized to limit the inlet velocity to 9000 feet per minute.

2.6    CHEMICAL FEEDERS

 A.    Five gallon capacity, cast-iron or welded-steel body, rated for pressure of 200 psi,
       complete with capped filling opening, connections, inlet, outlet and drain valves, and
       accessories, as detailed on the drawings.

PART 3 – EXECUTION

3.1    INSTALLATION, GENERAL

 A.    Plastic piping specialties are not permitted in HVAC system ceiling plenums or shafts
       used to convey building HVAC air distribution.

3.2    INSTALLING FLEXIBLE CONNECTIONS

 A.    Make connections to base-mounted heating and chilled water pumps and to air-handling
       units with flexible connections, unless coils in air-handling units are otherwise isolated.
       Flexible connections may also be used in connections to other equipment to provide for
       proper alignment of piping with connection flange on equipment. Piping on house side of
       flexible connections shall be securely anchored.

3.3    INSTALLING GASKETS AND UNIONS

 A.    Gaskets shall be installed in accordance with manufacturer’s recommendations.

 B.    Pipe connections to fixtures, control valves, equipment and appliances shall be provided
       with unions or flanges so that the units may be disconnected and replaced without
       damage to the pipe.

 C.    Provide dielectric unions between copper and steel piping NPS 0.5 through 2.5 (DN 15
       through 65).

 D.    Provide dielectric half-flange unions between copper and steel in piping NPS 3 (DN 80)
       and larger.

3.4    INSTALLING WATER SPECIALTIES

 A.    Provide specialties for each piping system and for heat transfer elements, as indicated.

 B.    Install valves, Y-type strainers, balancing fittings, vacuum breakers, and appurtenances
       for unit heaters, heating and cooling coils, and heating and cooling elements.

 C.    Strainers at domestic service entrance shall be basket type.

 D.    Automatic fill for the hydronic systems shall be as diagrammed on the drawings. The
       pressure-reducing valves and pressure-relief valves shall be line size and adjusted to the
       pressures indicated on the drawings.

 E.    In hydronic systems, provide automatic air vents where indicated and at each high point
       in piping. Provide 0.375-inch (DN 10) copper tubing from each automatic vent to


Piping Specialties                                                                      15120 - 6
INDEFINITE QUANTITY TERM CONTRACT                                                REVISED July 03
University of Maryland College Park

       discharge into main relief lines which discharge into nearest service tank or floor drain.
       Provide high-capacity type near expansion tank or air separation tank and where
       indicated.

 F.    Instead of the multipurpose valve, the Contractor may provide a non-slam (spring-type)
       check valve and a balancing valve with memory stop as specified in Section 15110,
       Valves.

 G.    Provide backflow preventers Y strainers.

 H.    Install relief valves for water heaters and other devices where required by governing
       codes. Relief valve discharge shall be piped as indicated or to the nearest floor drain or
       to within six inches of the floor beside unit.

 I.    Install pressure-reducing valve in water service at pint of entry into building arranged as
       indicated. Provide pressure gauge on each side of the pressure-reducing valve.

3.5    INSTALLING STEAM SPECIALTIES

 A.    Provide steam specialties for steam piping and heat transfer elements indicated. Install
       steam drips and traps wherever condensate can collect.

 B.    Install valves, strainers, traps, vacuum breakers, and appurtenances for mains, chillers,
       heat exchangers, air-handling units, unit heaters, hot water generator, steam heating
       coils, and heating elements.

 C.    Provide vacuum breakers on fast condensing equipment such as heat exchangers, hot
       water generators, unit heaters and steam coils.

 D.    Provide each steam strainer with a ball or plug blowoff valve.

 E.    Each steam heating element, whether equipped with automatic control valves or not,
       shall have a hand-operated valve in supply connection and shall have thermostatic trap in
       return connection. For larger heating elements and coils, the valves shall be gate type,
       and the traps shall be float and thermostatic type. Automatic air vents on steam
       elements shall be installed with air vent higher than top of element.

 F.    Install steam pressure-reducing stations as indicated on the drawings, complete with
       shutoff valves, pressure gauges, and globe valve bypass, and as indicated.

3.6    INSTALLING CHEMICAL FEEDERS

 A.    Install on steel angle supports, complete with connections and accessories, as shown on
       the drawings. Assure that cap is in place and operable.

                                        END OF SECTION




Piping Specialties                                                                       15120 - 7
INDEFINITE QUANTITY TERM CONTRACT                                                          REVISED July 03
University Of Maryland College Park


                                            SECTION 15122

                                        EXPANSION SYSTEM


PART 1 GENERAL

  1.1        SECTION INCLUDES

        A.      Precharged diaphragm-type expansion tank and tangential or coalescing air separator
                with vent.

        B.      Line-supported precharged diaphragm type expansion tank with air separator and vent.

  1.2        RELATED SECTIONS

        A.      Piping: Sections 15180 and 15140.

        B.      Supports: Section 15060.

  1.3        SUBMITTALS

        A.      General: Comply with Section 01330.

        B.      Product data: Each type of expansion system or tank, including each relief and air
                separation device and all accessories.


PART 2 PRODUCTS

  2.1        ACCEPTABLE MANUFACTURERS

        A.      General: Model names and number are provided in the articles below to set a standard for
                materials, quality of construction, options and details, and performance. Provide named
                products, or equal products by acceptable manufacturers listed in paragraph B.

        B.      Manufacturers:

                Adamson Company, Inc.
                Amtrol, Inc.
                ITT Bell and Gossett
                Spirotherm
                Taco, Inc.

  2.2        DIAPHRAGM-TYPE EXPANSION TANK

        A.      Pressurized diaphragm-type tank, Taco CA or CAX model number scheduled on the
                drawings, containing impermeable diaphragm which separates the air cushion from the




Expansion System                                                                                15122 - 1
INDEFINITE QUANTITY TERM CONTRACT                                                           REVISED July 03
University Of Maryland College Park


                system water. Operating temperature: 240 degrees F (110 degrees C) maximum.
                Precharge to system operating pressure.

        B.      Shell: Welded steel, constructed, tested and stamped in accordance with ASME BPV for
                Unfired Pressure Vessels for a working pressure of 125 psi (860 kPa). Lined with
                protective coating.

        C.      Diaphragm: Butyl rubber, flexible but not stretchable under working conditions,
                removable for inspection.

        D.      Size and capacity: Shown on the drawings.

        E.      Supports: For horizontal or vertical support on concrete equipment foundation, as
                diagrammed on the drawings.

  2.3        EXPANSION TANK FOR POTABLE WATER

        A.      Pressurized diaphragm type tank, Taco PAX model number scheduled on the drawings,
                containing impermeable diaphragm which separates the air cushion from the system
                water. Operating temperature: 240 degrees F. maximum. Precharge to manufacturer’s
                standard pressure.

        B.      Shell: Welded steel, constructed, tested and stamped in accordance with ASME BPV for
                Unfired Pressure Vessels for a working pressure of 125 psi. Lined with protective
                coating.

        C.      Diaphragm: Butyl rubber, flexible but not stretchable under working conditions,
                removable for inspection.

        D.      FDA approval: Wetted components FDA-approved materials.

        E.      Size and capacity: Shown on the drawings.

        F.      Supports: For horizontal or vertical support on concrete equipment foundation, as
                diagrammed on the drawings.

  2.4        AIR SEPARATOR

        A.      Air separator: Amtrol, Bell & Gossett, or Taco tangential type or Spirotherm VSR
                coalescing type, designed to eliminate free and entrained air from the system, capable of
                removing no less than 97.5 percent of the entrained air in the continuously circulating
                system.

        B.      Construction: Welded black steel, ASME constructed and labeled for 125 psig (860 kPa)
                working pressure.
                1.     Connections: Threaded NPS 2 (DN 50) and smaller; flanged NPS 2.5 (DN 65)
                       and larger.
                2.     Air-removing element:
                       a.      Tangential type: Perforated stainless-steel air collector tube.




Expansion System                                                                                  15122 - 2
INDEFINITE QUANTITY TERM CONTRACT                                                            REVISED July 03
University Of Maryland College Park


                        b.      Coalescing type: Copper tube and coalescing medium.

        C.      Capacities: Flow, maximum velocity, and maximum pressure drop are scheduled on the
                drawings.

        D.      Size: As required to achieve the specified air removal at the scheduled capacities.

  2.5        LINE-SUPPORTED EXPANSION TANK

        A.      Expansion tank: Taco “Taco-Trol” line supported, pressurized diaphragm type tank,
                containing impermeable diaphragm which separates the air cushion from the system
                water. Operating temperature: 240 degrees F maximum. Precharge to system operating
                pressure.

  2.6        AIR SEPARATOR

        A.      Air separator: Taco “Air Scoop” or Amtrol “Air Purger” cast iron, with tappings for
                connection to expansion tank and air vent, which continuously separates entrained air
                from system water.

  2.7        AUTOMATIC AIR VENT

        A.      As specified in Section 15120, Piping Specialties. Float type vent, size and capacity
                recommended by manufacturer for tank and system.


PART 3 EXECUTION

  3.1        INSTALLING EXPANSION TANKS

        A.      Follow manufacturer’s instructions and recommendations.

        B.      Install piping, air separation apparatus, and vents as diagrammed on drawings.

        C.      Install supports as shown on drawings.

  3.2        INSTALLING AIR SEPARATOR

        A.      Suspend from overhead hanger. Install air line between separator and the expansion tank
                as diagrammed on drawings. Make automatic fill connection from cold water main to
                system, as shown on diagrams, into the air line between the tanks.

  3.3        CLEANING

        A.      Remove and clean air separator air-removing element after 24 hours operation, and after
                30 days operation.




Expansion System                                                                                 15122 - 3
INDEFINITE QUANTITY TERM CONTRACT                                                REVISED July 03
University Of Maryland College Park


  3.4        OPERATING INSTRUCTIONS

        A.      As specified in Section 15050, provide operating instructions.




                                          END OF SECTION




Expansion System                                                                    15122 - 4
INDEFINITE QUANTITY TERM CONTRACT                                                      REVISED July 03
University Of Maryland College Park


                                        SECTION 15125

                           PIPING EXPANSION COMPENSATION


PART 1 GENERAL

1.1   SUMMARY

      A.     Section Includes:
             1.      Flexible pipe connectors.
             2.      Expansion joints.
             3.      Expansion compensators.
             4.      Pipe alignment guides.
             5.      Swivel joints.
             6.      Pipe anchors.

      B.     Related Sections:
             1.      Section 13910 - Basic Fire Suppression Materials and Methods: Product and
                     installation requirements for piping used in fire protection systems.
             2.      Section 15060 - Hangers and Supports: Product and installation requirements for
                     piping hangers and supports.
             3.      Section 15070 - Mechanical Sound, Vibration, Seismic Control: Product and
                     installation requirements for vibration isolators used in piping systems.
             4.      Section 15140 - Domestic Water Piping: Product and installation requirements
                     for piping used in domestic water systems.
             5.      Section 15180 - Heating and Cooling Piping: Product and installation
                     requirements for piping used in heating and cooling systems.

1.2   REFERENCES

      A.     American Society of Mechanical Engineers:
             1.     ASME B31.1 - Power Piping.
             2.     ASME B31.5 - Refrigeration Piping.
             3.     ASME B31.9 - Building Services Piping.
             4.     ASME Section IX - Boiler and Pressure Vessel Code - Welding and Brazing
                    Qualifications.

      B.     American Welding Society:
             1.     AWS D1.1 - Structural Welding Code - Steel.

1.3   DESIGN REQUIREMENTS


      A.     Provide structural work and equipment required for expansion and contraction of piping.
             Verify anchors, guides, and expansion joints provide and adequately protect system.

      B.     Expansion Compensation Design Criteria:
             1.     Installation Temperature: 50 degrees F .



                                                                     Piping Expansion Compensation
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INDEFINITE QUANTITY TERM CONTRACT                                                        REVISED July 03
University Of Maryland College Park


             2.      Hot Water Heating System Temperature: 210 degrees F.
             3.      Domestic Hot Water: 140 degrees F .
             4.      Steam Heating System Temperature: 250 degrees F.
             5.      Steam Heating System Operating Pressure: 15 psig .


1.4   SUBMITTALS

      A.     Section 01330 - Submittal Procedures: Requirements for submittals.

      B.     Shop Drawings: Indicate layout of piping systems, including flexible connectors,
             expansion joints, expansion compensators, loops, offsets and swing joints. Submit shop
             drawings sealed by a registered professional engineer. Include shop drawing information
             for piping expansion compensation in shop drawings for piping system specified in
             Section

      C.     Product Data:
             1.      Flexible Pipe Connectors: Indicate maximum temperature and pressure rating,
                     face-to-face length, live length, hose wall thickness, hose convolutions per foot
                     and per assembly, fundamental frequency of assembly, braid structure, and total
                     number of wires in braid.
             2.      Expansion Joints: Indicate maximum temperature and pressure rating, and
                     maximum expansion compensation.

      D.     Design Data: Indicate criteria and show calculations. Submit sizing methods calculations
             sealed by a registered professional engineer.

      E.     Manufacturer's Installation Instructions: Submit special procedures.

      F.     Manufacturer's Certificate: Certify products meet or exceed specified requirements.

      G.     Welders’ Certificate: Include welders’ certification of compliance with ASME Section
             IX.

      H.     Manufacturer’s Field Reports: Indicate results of inspection by manufacturer’s
             representative.

1.5   CLOSEOUT SUBMITTALS

      A.     Section 01700 - Execution Requirements: Closeout procedures.

      B.     Project Record Documents: Record actual locations of flexible pipe connectors,
             expansion joints, anchors, and guides.

      C.     Operation and Maintenance Data: Submit adjustment instructions.




                                                                      Piping Expansion Compensation
                                                                                          15125 - 2
INDEFINITE QUANTITY TERM CONTRACT                                                       REVISED July 03
University Of Maryland College Park


1.6    QUALITY ASSURANCE

       A.    Perform Work in accordance with ASME B31.1 code for installation of piping systems
             and ASME Section IX for welding materials and procedures

       B.    Maintain one copy of each document on site.

1.7    QUALIFICATIONS

       A.    Manufacturer: Company specializing in manufacturing products specified in this section
             with minimum three years experience.

       B.    Installer: Company specializing in performing Work of this section with minimum three
             years experience.

1.8    PRE-INSTALLATION MEETINGS

       A.    Section 01300 - Administrative Requirements: Pre-installation meeting.

1.9    DELIVERY, STORAGE, AND HANDLING

       A.    Section 01600 - Product Requirements: Product storage and handling requirements.

       B.    Accept expansion joints on site in factory packing with shipping bars and positioning
             devices intact. Inspect for damage.

       C.    Protect equipment from exposure by leaving factory coverings, pipe end protection, and
             packaging in place until installation.

1.10   WARRANTY

       A.    Section 01700 - Execution Requirements: Product warranties and product bonds.

       B.    Furnish five year manufacturer warranty for leak free performance of packed expansion
             joints.

1.11   EXTRA MATERIALS

       A.    Section 01700 - Execution Requirements: Spare parts and maintenance products..


PART 2 PRODUCTS

2.1    FLEXIBLE PIPE CONNECTORS

       A.    Steel Piping:
             1.      Inner Hose: Stainless Steel].
             2.      Exterior Sleeve: Double braided stainless steel.
             3.      Pressure Rating: 125 psig and 250 degrees F



                                                                        Piping Expansion Compensation
                                                                                            15125 - 3
INDEFINITE QUANTITY TERM CONTRACT                                                       REVISED July 03
University Of Maryland College Park


             4.      Joint: As specified for pipe joints.
             5.      Size: Use pipe-sized units.
             6.      Maximum offset: 1 inch on each side of installed center line.

      B.     Copper Piping:
             1.     Inner Hose: Bronze
             2.     Exterior Sleeve: Braided bronze.
             3.     Pressure Rating: 125 psig and 250 degrees F.
             4.     Joint: As specified for pipe joints.
             5.     Size: Use pipe sized units
             6.     Maximum offset: 1 inch

2.2   EXPANSION JOINTS

      A.     Stainless Steel Bellows Type:
             1.      Pressure Rating: 125 psig 250 degrees F.
             2.      Maximum Compression: 1-3/4 inc .
             3.      Maximum Extension: 1/4 inch.
             4.      Joint: [As specified for pipe joints.
             5.      Size: Use pipe sized units
             6.      Application: Steel piping 3 inch and smaller.

      B.     External Ring Controlled Stainless Steel Bellows Type:
             1.      Pressure Rating: 125 psig and 250 degrees F .
             2.      Maximum Compression: 15/16 inch.
             3.      Maximum Extension: 5/16 inch
             4.      Maximum Offset: 5/16 inch.
             5.      Joint: Flanged
             6.      Size: Use pipe sized units
             7.      Accessories: Internal flow liner.
             8.      Application: Steel piping 3 inch and larger.

      C.     Double Sphere, Flexible Compensators:
             1.     Body: Teflon Neoprene and nylon].
             2.     Working Pressure: 125psi
             3.     Maximum Temperature: 250 degrees F.
             4.     Maximum Compression: 1 inch.
             5.     Maximum Elongation: 1/2 inch.
             6.     Maximum Offset: 1/2 inch.
             7.     Maximum Angular Movement: 15 degrees.
             8.     Joint: Galvanized flanges.
             9.     Size: Use pipe sized units
             10.    Accessories: Control rods.
             11.    Application: Steel piping 2 inch and larger.

      D.     Two-ply Bronze Bellows Type:
             1.     Construction: Bronze with anti-torque device, limit stops, internal guides.
             2.     Pressure Rating: 125 psig 250 degrees F .
             3.     Maximum Compression: 1-3/4 inch .


                                                                      Piping Expansion Compensation
                                                                                          15125 - 4
INDEFINITE QUANTITY TERM CONTRACT                                                         REVISED July 03
University Of Maryland College Park


             4.      Maximum Extension: 1/4 inch .
             5.      Joint: As specified for pipe joints.
             6.      Size:Use pipe sized units
             7.      Application: Copper piping.

      E.     Low Pressure Compensators with two-ply Bronze Bellows:
             1.     Working Pressure:[75 psig .
             2.     Maximum Temperatures: 250 degrees F.
             3.     Maximum Compression: 1/2 inch.
             4.     Maximum Extension: 5/32 inch.
             5.     Joint: Soldered.
             6.     Size: Use pipe sized units
             7.     Application: Copper or steel piping 2 inch and smaller.

      F.     Copper with Packed Sliding Sleeve:
             1.     Maximum Temperature: 250 degrees F.
             2.     Joint: As specified for pipe joints.
             3.     Size: Use pipe sized units
             4.     Copper or steel piping 2 inches and larger.
             5.     Application: Copper or steel piping 2 inch and larger.

2.3   ACCESSORIES

      A.     Pipe Alignment Guides: Two piece welded steel with enamel paint, bolted, with spider to
             fit standard pipe, frame with four mounting holes, clearance for minimum 1 inch (25 mm)
             thick insulation, minimum 3 inch (75 mm) travel.


PART 3 EXECUTION

3.1   INSTALLATION

      A.     Install Work in accordance with [ASME B31.1] [ASME B31.5] [ASME B31.9].

      B.     Install flexible pipe connectors on pipes connected to equipment supported by vibration
             isolation. Refer to Section 15070. Provide line size flexible connectors.

      C.     Install flexible connectors at right angles to displacement. Install one end immediately
             adjacent to isolated equipment and anchor other end. Install in horizontal plane unless
             indicated otherwise.

      D.     Rigidly anchor pipe to building structure. Provide pipe guides to direct movement only
             along axis of pipe. Erect piping so strain and weight is not on cast connections or
             apparatus.

      E.     Provide support and anchors for controlling expansion and contraction of piping. Provide
             loops, pipe offsets, and swing joints, or expansion joints [where required] [as indicated on
             Drawings]. Refer to Section 15060 for pipe hanger installation requirements.




                                                                       Piping Expansion Compensation
                                                                                           15125 - 5
INDEFINITE QUANTITY TERM CONTRACT                                                       REVISED July 03
University Of Maryland College Park


      F.     Provide grooved piping systems with minimum one joint per inch (25 mm) pipe diameter
             instead of flexible connector supported by vibration isolation. Grooved piping systems
             need not be anchored.

      G.     Provide expansion loops as indicated on Drawings.

3.2   MANUFACTURER'S FIELD SERVICES

      A.     Section 01400 - Quality Requirements: Manufacturers’ field services.

      B.     Furnish inspection services by flexible pipe manufacturer's representative for final
             installation and certify installation is in accordance with manufacturer's recommendations
             and connectors are performing satisfactorily.


                                       END OF SECTION




                                                                      Piping Expansion Compensation
                                                                                          15125 - 6
INDEFINITE QUANTITY TERM CONTRACT                                                                   REVISED July 03
University Of Maryland College Park


                                                SECTION 15130

                                                    PUMPS


PART 1 GENERAL

 1.1        SUMMARY

       A.      Section Includes:
                1.       In-line circulators.
                2.       Vertical in-line pumps.
                3.       Base mounted pumps.

       B.      Related Sections:
                1.      Section 15070 - Mechanical Sound, Vibration, and Seismic Control: Product
                        requirements for vibrations isolators installed with pumps.
                2.      Section 15120 - Piping Specialties: Product and execution requirements for piping
                        specialties installed in hydronic systems adjacent to pumps.
                3.      Section 15140 - Domestic Water Piping: Pumps for use in domestic water systems.
                4.      Section 15150 - Sanitary Waste and Vent Piping: Sewage ejectors for use with sanitary
                        systems.
                5.      Section 15180 - Heating and Cooling Piping: Execution requirements for connection to
                        pumps specified by this section.
                6.      Division 16 - Wiring Connections: Execution requirements for electrical connections to
                        pumps specified by this section.
                7.      Division 16 - Motors: Product requirements for motors for placement by this section.

 1.2        REFERENCES

       A.      American Society of Mechanical Engineers:
                1.     ASME Section VIII - Boiler and Pressure Vessel Code - Pressure Vessels.

       B.      Underwriters Laboratories Inc.:
                1.      UL 778 - Motor Operated Water Pumps.

 1.3        PERFORMANCE REQUIREMENTS

       A.      Provide pumps to operate at system fluid temperatures [indicated on Drawings] without vapor
               binding and cavitation, are non-overloading in parallel or individual operation, and operate within
               25 percent of midpoint of published maximum efficiency curve.

 1.4        SUBMITTALS

       A.      Section 01330 - Submittal Procedures: Submittal procedures.

       B.      Product Data: Submit certified pump curves showing performance characteristics with pump and
               system operating point plotted. Include NPSH curve when applicable. Include electrical
               characteristics and connection requirements. Submit also, manufacturer model number, dimensions,
               service sizes, and finishes.




Pumps                                                                                                    15130 - 1
INDEFINITE QUANTITY TERM CONTRACT                                                                     REVISED July 03
University Of Maryland College Park


        C.      Manufacturer's Installation Instructions: Submit application, selection, and hookup configuration
                with pipe and accessory elevations. Submit hanging and support requirements and
                recommendations.

        D.      Manufacturer's Certificate: Certify products meet or exceed specified requirements.

 1.5         CLOSEOUT SUBMITTALS

        A.      Section 01700 - Execution Requirements: Closeout procedures.

        B.      Operation and Maintenance Data: Submit installation instructions, servicing requirements,
                assembly views, lubrication instructions, and replacement parts list.

        C.      Maintain one copy of each document on site.

 1.6         QUALIFICATIONS

        A.      Manufacturer: Company specializing in manufacturing products specified in this section with
                minimum three years experience ,and with service facilities within 100 miles of Project.

        B.      Installer: Company specializing in performing Work of this section with minimum three years
                experience approved by manufacturer.

 1.7         DELIVERY, STORAGE, AND HANDLING

        A.      Section 01600 - Product Requirements: Product storage and handling requirements.

        B.      Protect systems from entry of foreign materials by temporary covers, completing sections of the
                work, and isolating parts of completed system.

 1.8         FIELD MEASUREMENTS

        A.      Verify field measurements prior to fabrication.

 1.9         WARRANTY

        A.      Section 01700 - Execution Requirements: Product warranties and product bonds.

        B.      Furnish five year manufacturer warranty for pumps.

 1.10        EXTRA MATERIALS

        A.      Section 01700 - Execution Requirements: Spare parts and maintenance products.

        B.      Furnish one set of mechanical seals for each pump.




Pumps                                                                                                    15130 - 2
INDEFINITE QUANTITY TERM CONTRACT                                                                      REVISED July 03
University Of Maryland College Park


PART 2 PRODUCTS

 2.1        IN-LINE CIRCULATORS

       A.      Type: Horizontal shaft, single stage, direct connected, with resiliently mounted motor for in-line
               mounting, oil lubricated, for 125 psig maximum working pressure.

       B.      Casing: Cast iron, with flanged pump connections.

       C.      Impeller: Stamped brass or cast bronze, keyed to shaft.

       D.      Bearings: Two, oil lubricated bronze sleeves.

       E.      Shaft: Alloy with bronze sleeve, integral thrust collar.

       F.      Seal: Carbon rotating against stationary ceramic seat, 225 degrees F maximum continuous
               operating temperature.

       G.      Drive: Flexible coupling.

        H.      Electrical Characteristics and Components:
                1.       Motors: In accordance with Division 16. 1750 rpm unless indicated otherwise.
                2.       Wiring Terminations: Furnish terminal lugs to match branch circuit conductor quantities,
                         sizes, and materials indicated. Enclose terminal lugs in terminal box sized to NFPA 70.

 2.2        VERTICAL IN-LINE PUMPS

       A.      Type: Vertical, single stage, close coupled, split casing, for in-line mounting, for 175 psig
               working pressure.

       B.      Casing: Cast iron, with suction and discharge gage port, casing wear ring, seal flush connection,
               drain plug, flanged suction and discharge.

       C.      Impeller: Bronze, fully enclosed, keyed directly to motor shaft or extension.

       D.      Shaft: Carbon steel with stainless steel impeller cap screw or nut and bronze sleeve.

       E.      Shaft Sleeve: Aluminum bronze.

       F.      Seal: Packing gland with minimum four rings graphite impregnated packing and lantern ring, 230
               degrees F maximum continuous operating temperature.

       G.      Electrical Characteristics and Components:

                1.       Motors: In accordance with Division 16. 1750 rpm unless specified otherwise.
                2.       Wiring Terminations: Furnish terminal lugs to match branch circuit conductor quantities,
                         sizes, and materials indicated. Enclose terminal lugs in terminal box sized to NFPA 70.

 2.3        BASE MOUNTED PUMPS

       A.      Type: Horizontal shaft, single stage, direct connected, radial or horizontal split casing, for 125 psig
               maximum working pressure.




Pumps                                                                                                       15130 - 3
INDEFINITE QUANTITY TERM CONTRACT                                                                    REVISED July 03
University Of Maryland College Park


       B.       Casing: Cast iron, with suction and discharge gage ports, renewable bronze casing wearing rings,
                seal flush connection, drain plug, flanged suction and discharge.

       C.       Impeller: Bronze, fully enclosed, keyed to shaft.

       D.       Bearings: Permanently lubricated roller or ball bearings.

       E.       Shaft: Alloy steel with copper, bronze, or stainless steel shaft sleeve.

        F.       Seal: Carbon rotating against stationary ceramic seat, 225 maximum continuous operating
                 temperature.

       G.       Drive: Flexible coupling with coupling guard.

       H.       Baseplate: Cast iron or fabricated steel with integral drain rim.

       I.       Electrical Characteristics and Components:
                 1.        Motors: In accordance with Division 16. 1750 rpm unless specified otherwise.
                 2.        Wiring Terminations: Furnish terminal lugs to match branch circuit conductor quantities,
                           sizes, and materials indicated. Enclose terminal lugs in terminal box sized to NFPA 70.


PART 3 EXECUTION

 3.1         INSTALLATION

       A.       Provide pumps to operate at specified system fluid temperatures without vapor binding and
                cavitation, are non-overloading in parallel or individual operation, and operate within 25 percent of
                midpoint of published maximum efficiency curve.

       B.       Install long radius reducing elbows or reducers between pump and piping. Support piping adjacent
                to pump so no weight is carried on pump casings. For close coupled or base mounted pumps, install
                supports under elbows on pump suction and discharge line sizes 4 inches (102 mm) and over.

       C.       Install pumps on vibration isolators. Refer to Section 15070.

       D.       Install flexible connectors at or near pumps, compressors, motorized equipment where piping
                configuration does not absorb vibration. Refer to Section 15120.

       E.       Provide line sized shut-off valve and strainer on pump suction, and line sized soft seat check valve,
                balancing valve, and shut-off valve combination pump discharge valve on pump discharge. Refer to
                Section 15120.

       F.       Decrease from line size with long radius reducing elbows or reducers. Support piping adjacent to
                pump so no weight is carried on pump casings. Provide supports under elbows on pump suction and
                discharge line sizes 4 inches (100 mm) and larger.

       G.       Provide air cock and drain connection on horizontal pump casings.

       H.       Provide drains for bases and seals.

       I.       Check, align, and certify alignment of base mounted pumps prior to start-up.




Pumps                                                                                                      15130 - 4
INDEFINITE QUANTITY TERM CONTRACT                                                                     REVISED July 03
University Of Maryland College Park


       J.      Install close coupled and base mounted pumps on concrete housekeeping base, with anchor bolts,
               set and level, and grout in place. Refer to Section 03300.

       K.      Lubricate pumps before start-up.

       L.      Provide side-stream filtration system for heating water, chilled water, glycol, brine systems. Install
               across pump with flow from pump discharge to pump suction from pump taps.

 3.2        FIELD QUALITY CONTROL

       A.      Section 01400 - Quality Requirements: Testing and Inspection Services 01700 - Execution
               Requirements: Testing, adjusting, and balancing.

       B.      Inspect for alignment of base mounted pumps.




                                               END OF SECTION




Pumps                                                                                                      15130 - 5
INDEFINITE QUANTITY TERM CONTRACT                                                        REVISED July 03
University Of Maryland College Park


                                             SECTION 15140

                                       DOMESTIC WATER PIPING


PART 1 GENERAL

  1.1        SECTION INCLUDES

        A.      Domestic cold water.

        B.      Domestic hot water.

        C.      Recirculated hot water.

  1.2        RELATED SECTIONS

        A.      Piping materials and methods: Section 15050

  1.3        DEFINITIONS

        A.      Domestic water system: Potable water system for general human use, including hot and
                cold water supply and return.

  1.4        SUBMITTALS

        A.      General: Comply with Section 01330.

        B.      Product data: Each type of pipe and fitting included in the project.

        C.      Certifications: Disinfection test report.

  1.5        QUALITY ASSURANCE

        A.      Potable water system components, including pipe and joining materials, shall comply
                with NSF 61.


PART 2 PRODUCTS

  2.1        ACCEPTABLE SUPPLIERS

        A.      Disinfection of domestic water system:
                Betts
                Ecolab
                Nalco




Domestic Water Piping                                                                         15140 - 1
INDEFINITE QUANTITY TERM CONTRACT                                                          REVISED July 03
University Of Maryland College Park


  2.2        ABOVEGROUND PIPE AND FITTINGS

        A.      Pipe:
                1.      Copper tubing, ASTM B 88, Type L, hard drawn, plain end, or roll grooved; cut
                        grooved not permitted.

        B.      Fittings:
                1.       For plain-end copper pipe: Solder joint, cast brass, ASME B16.18, or wrought
                         copper, ASME B16.22.
                2.       For grooved pipe, copper:
                         a.      Couplings, gasket, and fittings capable of withstanding a constant
                                 temperature of 230 degrees F (110 degrees C), and 175 psi (1207 kPa)
                                 working pressure.
                         b.      Reducing couplings not permitted; use reducing fittings at changes in
                                 pipe size.
                         c.      Gaskets: EPDM.
                         d.      Copper: Equal to Victaulic Style 606, designed to fit copper tube,
                                 coupling housing fastened with two bolts and nuts.

        C.      Flanges:
                1.      For copper pipe: Bronze, solder type, ASME B16.24, Class 150.

        D.      Unions:
                1.      For copper pipe: Cast bronze or wrought copper with solder ends, ASME B16.18
                        or B16.22.

        E.      Dielectric pipe fittings shall comply with section 15120.

        F.      Elbows in piping NPS 4 (DN 100) and larger shall be long radius type.


PART 3 EXECUTION

  3.1        INSTALLATION

        A.      Install domestic water piping as shown on the drawings and in accordance with the
                provisions of Section 15050, Basic Materials and Methods.

        B.      Install aboveground piping in accordance with the Schedule or Pipe Systems, Sizes, and
                Materials at the end of this section.

        C.      Provide hose connections with vacuum breakers at low points of domestic water system
                for drainage.

        D.      Provide dielectric unions between ferrous and copper piping.




Domestic Water Piping                                                                          15140 - 2
INDEFINITE QUANTITY TERM CONTRACT                                                            REVISED July 03
University Of Maryland College Park


  3.2        CLEANING AND TESTING PIPING SYSTEMS

        A.      When a domestic water loop is completed, and before strainer baskets are installed,
                pressure test at the pressure shown in Piping Test Table in Section 15050, and thoroughly
                flush. Water piping connections for flushing shall be same size as piping being flushed
                or one size smaller. When a major section of the building is completed, repeat the same
                procedure, except that water pipe connections for flushing shall be limited to 1.5 inch.
                Then install strainer baskets and conduct a preliminary operation test.

  3.3        DISINFECTION OF DOMESTIC WATER SYSTEM

        A.      Disinfect the entire domestic water system installed under this contract, cold, hot and
                return piping, before using. Unless prescribed otherwise by the county or state health
                department, the method of disinfecting shall be as follows:
                1.      Through a NPS 0.75 (DN 20) hose connection in the main entering the building,
                        pump in sufficient sodium hypochlorite to produce a free available chlorine
                        residual of not less than 200 ppm. Provide plumbing connections and power for
                        service organization for pumping chlorine into the system.
                2.      Proceed upstream from the point of chlorine application, opening each faucet and
                        tap until chlorine is detected. Close each faucet and tap when chlorine is evident.
                3.      When chlorinated water has been brought to every faucet and tap with a
                        minimum concentration of 200 ppm chlorine, retain this water in the system for
                        at least three hours, but no more than 3.5 hours.
                4.      At the end of the retention period, no less than 100 ppm of chlorine shall be
                        present at the extreme end of the system.
                5.      Open all faucets and taps and flush all lines until the chlorine residual in the
                        water is less than one ppm.
                6.      Obtain a representative water sample from the system for analysis by a
                        recognized bacteriological laboratory.
                7.      If the sample tested for coliform organisms is negative, the service organization
                        shall submit a letter and laboratory report to the Contractor, certifying successful
                        completion of the sterilization. Submit report.
                8.      If any samples tested indicate the presence of coliform organisms, the entire
                        sterilization procedure shall be repeated.
                9.      Close main sprinkler valves or branch sprinkler valves prior to disinfection of
                        system. Open valves when disinfection is complete.

  3.4        SCHEDULE OF PIPE SYSTEMS, SIZES AND MATERIALS

                                       Pipe Types Listed Below
                          System           1             2
                        Cold water         X
                        Hot water          X             X
                        Hot water
                                           X               X
                        return

                1.      Four inches and smaller, copper Type L.
                2.      Five inches and larger, copper Type L.




Domestic Water Piping                                                                             15140 - 3
INDEFINITE QUANTITY TERM CONTRACT                                                                       REVISED July 03
University Of Maryland College Park


                                                 SECTION 15155

                                      SANITARY AND STORM PIPING


PART 1 GENERAL

  1.1        SECTION INCLUDES

        A.       Sanitary Piping, interior.

        B.       Air-conditioning condensate drain.

        C.       Storm piping.

  1.2        RELATED SECTIONS

        A.       Piping installation and testing: Section 15050.

  1.3        SUBMITTALS

        A.       General: Comply with Section 01330.

        B.       Product data: Each specified material and product.


PART 2 PRODUCTS

  2.1        PIPING AND FITTINGS, TYPES

        A.       Install each type of pipe and fittings in locations required or permitted in Part 3, including the Pipe
                 Installation Schedule at the end of the section.

        B.       Type A: Cast-iron hub and spigot pipe and fittings, ASTM A 74 service class, with lead and
                 oakum joints.

        C.       Type B: Cast-iron hub and spigot pipe and fittings, ASTM A 74 service class, with lifetime
                 neoprene gasket joint equal to Control’s “Multi-Tite,” Tyler’s “Ty-seal,” Alabama’s “All-tite,” or
                 Buffalo’s “Dual Tite.”

        D.       Type D: Copper tubing Type DWV, ASTM B 306, with wrought copper drainage fittings, ANSI
                 B16.29; or cast-brass fittings, ANSI B16.23.
                 1.      For air-conditioning condensate piping smaller than NPS 1-1/4, (DN 30) copper Type L
                         or M is permitted. Fittings: Solder joint, cast brass ANSI B16.18, or wrought copper
                         ANSI B16.22.




Sanitary and Storm Piping                                                                                    15155 - 1
INDEFINITE QUANTITY TERM CONTRACT                                                                      REVISED July 03
University Of Maryland College Park


PART 3 EXECUTION

  3.1        PREPARATION

        A.      Connect piping to manholes and stubs as shown on the drawings. Check elevations of these
                connection points before installing new work.

  3.2        INSTALLATION, GENERAL

        A.      Use suitable tools and appliances for the safe and convenient handling and laying of pipe.
                Examine each section of pipe for defects. Do not lay any piece that is known to be defective. If
                any defective piece should be discovered after having been laid, remove and replace it at no
                change to the contract price.

        B.      Install piping in accordance with the Pipe Installation Schedule at the end of this section, as
                indicated on the drawings, and in accordance with Section 15050, Basic Mechanical Materials and
                Methods. Materials and work shall conform to local plumbing codes and health department
                regulations.

        C.      Thoroughly clean all pipe and fittings before installing them, and keep them clean until the
                acceptance of the completed work. Cap or plug ends of lines to prevent debris from entering
                during construction.

        D.      Threaded joints: In accordance with requirements of Section 15050, Basic Mechanical Materials
                and Methods. Where sanitary piping is above food storage, preparation, and serving areas, use
                litharge and glycerin pipe compound.

        E.      Joints in cast-iron pipe: Oakum and molten lead, thoroughly caulked and made gas- and
                watertight. Fill joint with lead to a depth of at least 1 inch, and make it flush with the hub of the
                pipe.

        F.      Make changes in direction of sanitary and storm water piping with approved sanitary fittings, Y
                branches, 1/8 or 1/16 bends.

        G.      In soil, waste, and vent stacks where branches occur that are smaller than stacks, provide properly
                sized reducing fittings.

        H.      Seal air-conditioning condensate drain where it passes through outside wall and provide
                splashblock if required.

  3.3        CONNECTING TO EXISTING PIPING

        A.      Clean the inside of existing piping at connections to a new piping, using water blasting device.

        B.      Blasting device: Flexible high pressure hose with self-propelling nozzle which blasts to front,
                sides, and rear (propulsion).

        C.      Operation: Blasting device is operated with water at 15,000 psi (107 kPa). The piping system
                being cleaned is not pressurized.

        D.      Clean from the connection point to at least 5 feet (1.5 m) outside the exterior building wall.




Sanitary and Storm Piping                                                                                   15155 - 2
INDEFINITE QUANTITY TERM CONTRACT                                                      REVISED July 03
University Of Maryland College Park


  3.4     SCHEDULES




                       SANITARY AND STORM PIPE INSTALLATION SCHEDULE
                      Contractor has option where more than one x appears on a line

                                               MATERIAL TYPE
                                      USE                     A        B          D
        ALL OF       Sanitary, below slab on earth            X        X              THE ABOVE
                                                                                      SUBJECT TO
                     Storm, below slab on earth               X        X              LOCAL
                     Storm, interior exposed                  X                       PLUMBING
                                                                                      CODE AND
                     Air condition, condensate                                    X   HEALTH
                                                                                      DEPARTMENT
                 REQUIREMENTS.



                                      MATERIAL TYPES (Refer to Part 2 Products)


                 A – Cast iron hub & spigot, lead joint
                 B – Cast iron hub & spigot, rubber joint
                 D – Copper DWV


                                               END OF SECTION




Sanitary and Storm Piping                                                                 15155 - 3
INDEFINITE QUANTITY TERM CONTRACT                                                          REVISED July 03
University Of Maryland College Park


                                            SECTION 15180

                                  HEATING AND COOLING PIPING


PART 1 GENERAL

 1.1     SECTION INCLUDES

       A.       Steam and steam condensate return.

       B.       Heating water supply and return.

       C.       Chilled water supply and return.

       D.       Condenser water supply and return.

 1.2     RELATED SECTIONS

       A.       Piping materials, installation, and testing: Section 15050.

       B.       Pipe cleaning and water treatment: Section 15189.

 1.3     SUBMITTALS

       A.       General: Comply with Section 01330.

       B.       Product data: Each specified material and product.


PART 2 PRODUCTS

 2.1     PIPE

       A.       Black steel, threaded or plain end: Schedule 40 or 80, ASTM A 53.

       B.       Copper tubing ASTM B 88, Type K hard or soft drawn, plain end.

 2.2     FITTINGS

       A.       For steel piping: Cast iron, Class 125, ASME B16.1 and 16.4; malleable iron, Class 150,
                ASME B16.3.
                1.      NPS 2 (DN 50) and smaller, threaded.
                2.      NPS 2.5 (DN 65) and larger, flanged.

       B.       Fitting for plain end copper pipe: Solder joint, cast brass, ASME B16.18; or wrought
                copper, ASME B16.22.

       C.       Welding fittings: Steel, 150 psi (1030 kPa), ANSI B16.9, products of Tube Turn, Ladish,
                Taylor Forge, Bonney, or Vogt.



Heating and Cooling Piping                                                                     15180 - 1
INDEFINITE QUANTITY TERM CONTRACT                                                           REVISED July 03
University Of Maryland College Park


       D.       Companion flanges: 150-lb., welding neck or slip-on type, ANSI B16.5.

       E.       Dielectric pipe fittings shall comply with Section 15120.

       F.       Threaded joints:
                1.     For heating and cooling water systems: Compound recommended by
                       manufacturer for use at the temperature and pressure of the system, or “Teflon”
                       pipe thread tape, specified in Section 15050, Basic Mechanical Materials and
                       Methods.
                2.     For steam: “Teflon” tape, heavy duty, extra density, recommended for use at the
                       pressure of the system, UL listed.

       G.       Elbows in piping NPS 4 (DN 100) and larger shall be long radius type.


PART 3 EXECUTION

 3.1        INSTALLATION

       A.       Install piping as indicated on the drawings and in accordance with provisions of Section
                15050 and the piping installation schedule at the end of the section.

       B.       Install automatic control valves, pressure and flow switches and insertion wells furnished
                under automatic temperature controls sections, as indicated on the drawings, and in
                accordance with manufacturer’s instructions.

       C.       Provide dielectric unions between steel and copper pipe

 3.2        INSTALLING STEAM SYSTEMS

       A.       Steam supply mains shall sloped down a minimum of 1 inch in 40 feet (1:480) in
                direction of flow when steam and condensate flow in the same direction. Slope down
                shall be 1 inch in 10 feet (1:120) in direction of condensate flow when steam and
                condensate flow in opposite directions.
                1.       The system shall be entirely free from water hammer and water pockets.
                2.       Use eccentric reducers for reductions, at nearest branch tee.
                3.       Take branches to risers off top of main with tees and 45-degree elbows.

       B.       Steam condensate return lines shall slope in the direction of flow a minimum of 1 inch in
                40 feet (1:480). Take branches to risers off top or side of main.

       C.       Steam horizontal connections to risers shall be sloped toward mains a minimum of 1 inch
                in 5 feet (1:60).

 3.3        CLEANING AND TREATMENT

       A.       Clean piping and provide water treatment as specified in Section 15189, Water
                Treatment.




Heating and Cooling Piping                                                                       15180 - 2
INDEFINITE QUANTITY TERM CONTRACT                                                        REVISED July 03
University Of Maryland College Park


 3.4     SCHEDULES




                    HEATING AND COOLING PIPE INSTALLATION SCHEDULE                             A.

                    Contractor has option where more than one x appears on a line
                                            A    B     C    D     E    F    G     H       I
          Steam 25 psi system               X    X
          Steam 125 psi system              X    X
          Steam condensate return                                                         X
          Heating water                     X    X                    X
          Chilled water                     X    X                    X
          Relief vent                       X    X

                  Schedule 40 black steel, welded; NPS 2.5 (DN 65) and larger pipe sizes with welded
                  or flanged fittings.

               B. Schedule 40 black steel, threaded; NPS 2 (DN 50) and smaller with threaded fittings,
                  except water over 125 psi (860 kPa) and steam over 90 psi (620 kPa) shall be
                  Schedule 80.

               F. Copper tubing; NPS 2 (DN 50) and smaller pipe sizes with cast or wrought fittings.

               I. Schedule 80 black steel; NPS 2 (DN 50) and smaller pipe sizes with threaded fittings;
                  NPS 2.5 (DN 65) and larger pipe sizes with welded or flanged fittings.




Heating and Cooling Piping                                                                    15180 - 3
INDEFINITE QUANTITY TERM CONTRACT                                                             REVISED July 03
University Of Maryland College Park


                                             SECTION 15501

                                            GENERAL HVAC


PART 1 GENERAL

  1.1        SECTION INCLUDES

        A.      Service for heating, ventilating, and air conditioning equipment required for the work as
                indicated on the drawings.

  1.2        RELATED SECTIONS

        A.      Operating manuals: Section 01770.

        B.      General project warranty: General Conditions.

        C.      Fans: Section 15830.

  1.3        DESIGN REQUIREMENTS

        A.      The products specified, scheduled, and shown on drawings are the basis of the design of
                this project.

        B.      For requirements affecting use of optional manufacturers, or substitutions, see Section
                01631, Product Requirements, and Section 15050, Basic Mechanical Materials and
                Methods.

  1.4        SUBMITTALS

        A.      General: Comply with Section 01330.

        B.      Shop drawings:
                1.     Refrigeration service organization: Name and address of proposed agency.
                2.     Proposed service or test agreement of each type included in the project, showing
                       conformance to specifications. Include detailed list of work to be performed at
                       each visit.

        C.      Certifications:
                1.      Qualifications of refrigeration installation and service agency.
                2.      Each installation and service organization: A list of at least ten projects, similar
                        to this project in type, size, and components, which have been operating
                        satisfactorily for at least two heating and cooling seasons.
                3.      Include evidence of each requirements specified in article 1.41, “Qualifications,”
                        below.




General HVAC                                                                                        15501-1
INDEFINITE QUANTITY TERM CONTRACT                                                            REVISED July 03
University Of Maryland College Park


  1.5        QUALITY ASSURANCE

        A.      Perform work in accordance with the plumbing, electrical, building, fire and safety codes
                of the state, county or city in which the work is performed.

        B.      UL label and local testing (if required): As specified in Section 15050, Basic Mechanical
                Materials and Methods.

        C.      HVAC equipments shall meet the energy performance requirements of ASHRAE 90.1
                Energy Efficient Design of New Buildings Except Low-rise Residential Buildings.

  1.6        QUALIFICATIONS OF EACH SERVICE AND MAINTENANCE AGENCY

        A.      Regularly engaged in performing installation, startup, and service work for equipment
                and systems of the types included in this project.

        B.      Located in the Baltimore/Washington, DC, metropolitan area.

        C.      Staff factory-trained by the manufacturer of the equipment included in this project.

        D.      Provides emergency service on call 24 hours a day.

        E.      Maintains an adequate stock of manufacturer’s genuine or approved parts to service this
                equipment.

        F.      Has service contracts available, which can meet requirements specified for the equipment
                and systems of this project.


PART 2 PRODUCTS


Not used.


PART 3 EXECUTION

  3.1        EXECUTION

        A.      Furnish and install and in most cases factory-wire motor starters specified under each
                technical section in this division. Furnish and install under Division 16 magnetic starters
                not specifically specified with equipment. Unless specified otherwise, automatic control
                devices for equipment are furnished with the equipment.

        B.      Unless explicitly specified otherwise, mount and completely wire under Division 16 all
                starters and automatic control devices, except those which are factory-mounted on
                equipment.




General HVAC                                                                                       15501-2
INDEFINITE QUANTITY TERM CONTRACT                                                            REVISED July 03
University Of Maryland College Park


        C.      Unless specified otherwise, motor disconnects, manual starters, pushbutton stations, and
                pilot lights are specified in Division 16, Electrical. Equipment specified in Division 15
                shall be suitable for operation in conjunction therewith.

        D.      Unless specified otherwise in a particular section, electric motors shall comply with the
                requirements of Section 15053.

  3.2        IDENTIFICATION

        A.      Identify equipment as required in Section 15050, Basic Mechanical Materials and
                Methods.

        B.      Thermometers, gauges, and control devices shall be identified.

  3.3        TESTING MECHANICAL EQUIPMENT

        A.      Check and adjust all heating and cooling equipment installed.

        B.      Operate heating and cooling equipment and check controls including high and low limit
                controls.

        C.      Mechanical equipment shall be proven to function properly by actual operation prior to
                final acceptance.

  3.4        EQUIPMENT LUBRICATION

        A.      Bearings of equipment shall be provided with adequate facilities for lubrication. Oiling
                devices shall be accessible. Lubricate bearings upon completion of work prior to startup
                of the equipment. Lubricants shall be as specified by equipment manufacturers.



                                            END OF SECTION




General HVAC                                                                                       15501-3
INDEFINITE QUANTITY TERM CONTRACT                                                                 REVISED July 03
University Of Maryland College Park

                                      SECTION 15810 – DUCTS

PART 1 – GENERAL

1.1       SECTION INCLUDES

      A. HVAC supply, return and exhaust metal ductwork and plenums in pressure classes from
         minus 2 to plus 10 inches wg (minus 500 to plus 2490 Pa).

      B. Sealants.

      C. Duct leakage testing.

1.2       RELATED WORK SPECIFIED ELSEWHERE

      A. Firestop Systems: Section 07841

      B. Insulation: Section 15082

      C. Louvers: Section 15854

       D. Testing, Adjusting and Balancing: Section 15950

1.3       REFERENCES

      A. SMACNA HVAC DCS: SMACNA HVAC Dust Construction Standards, Metal and
         Flexible.

      B. SMACNA RIDCS: SMACNA Round Industrial Duct Construction Standards.

      C. SMACNA: HVAC Air Duct Leakage Test Manual.

      D. ASHRAE Handbook: Fundamentals.

      E. ASTM D 1330: Rubber Sheet Gaskets.

      F. ACGIH-01: American Conference of Governmental Industrial Hygienists, Industrial
         Ventilation: A Manual of Recommended Practice.

      G. UL 181: Factory-Made Air Ducts and Air Connectors.

1.4       DEFINITIONS

      A. Seam: Joining of two longitudinal (parallel to the direction of airflow) edges of duct
         surface material. All other duct surface connections are joints.

      B. Joints: Traverse joints (perpendicular to the direction of airflow); brand and subbranch
         intersection; duct collar tap-ins; louver and air terminal connections to ducts; access door
         and access panel frames and jambs; duct, plenum, and casing abutments to building
         structures.

1.5       SYSTEM PERFORMANCE REQUIREMENTS

      A. The duct system design, as indicated, has been used to select and size air moving and
         distribution equipment and other components of the air system. Do not change the layout
         or configuration of the duct system except as specifically approved in writing.


DUCTS                                                                                                    15810 – 1
INDEFINITE QUANTITY TERM CONTRACT                                                              REVISED July 03
University Of Maryland College Park

         Accompany requests for modifications with calculations showing that the proposed
         design will provide original design results without increasing the system total pressure.

1.6      SUBMITTALS

      A. General: Comply with Section 01330.

      B. Shop Drawings:

         1. Schedule of duct systems with applicable pressure classes and leakage classes.
         2. Fabrication, assembly, and installation for each duct system: Indicate duct
            dimensions, sheet metal thickness, reinforcement spacing, and seam and joint
            construction; and components and attachments to other work.

         3. Calculations when required as specified in the article “System Performance
            Requirements” above.

         4. Schedule of sealing methods for each type of seam and joint.

      C. Product data:

         1. Hangers and supports.

         2. Manufactured ducts and fittings.

         3. Joint and sealing materials.

         4. Manufacturer’s installation instructions.

      D. Test reports: Air Duct Leakage Test Summary: Submit data on forms as indicated in the
         SMACNA HVAC Duct Leakage Test Manual. (See sample form at end of section.)

1.7      QUALITY ASSURANCE

      A. Specified and scheduled duct construction exceeds SMACNA requirements. Comply
         with specifications and schedules, and for materials or methods not specified or
         scheduled, comply with SMACNA HVAC DCS and RIDCS.

      B. Comply with NFPA 90A and 90B.

PART 2 – PRODUCTS

2.1      ACCEPTABLE MANUFACTURERS

      A. Manufactured ducts and fittings:

         United McGill Corp., Sheet Metal Division
         LaPine Metal Products
         Semco Mfg. Inc.
         Eastern Sheet Metal
         Hamlin Sheet Metal

      B. Manufactured joint connectors:

         Ductmate Industries




DUCTS                                                                                                 15810 – 2
INDEFINITE QUANTITY TERM CONTRACT                                                              REVISED July 03
University Of Maryland College Park

          Ward Duct Connector Industries

      C. Products of other manufacturers may be proposed as permitted by the provisions of the
         article “Product Substitutions” in Section 01630.

2.2       MATERIALS

      A. Galvanized steel sheets: Lock-forming quality, ASTM A 653/A 653 M, coating designation
         G90 (Z275).

      B. Aluminum sheets: ASTM B 209, alloy 3003, temper H14.

          1. Ducts exposed to view: Standard one-side bright finish.
          2. Concealed ducts: Mill finish.

      C. Reinforcement shapes and plates: Galvanized steel where installed on galvanized sheet
         steel ducts; carbon steel on carbon steel ducts and compatible materials on copper,
         aluminum, and stainless steel ducts.

      D. Tie rods: Galvanized steel, minimum diameter 0.25 inch (6mm) for ducts up to 36 inches
         (900 mm); 0.375 inch over 36 inches (900 mm).

      E. Vapor barrier: Polyethylene sheet, 6 mils (0.15 mm) thick, conforming to Federal
         Specification UU-P-147 for permeability.

2.3       JOINT AND SEAL MATERIALS

      A. Flexible joint material for connection to vibrating equipment: Specified in section, Duct
         Accessories.

      B. Duct joint and seam sealants: UL classified, fire-resistive, conforming to NFPA 90A and
         90B, high pressure type (up to 10 inches (2490 Pa) SMACNA pressure class) equal to
         the following products:

          1. Indoor application: Hardcast “Iron Grip” (IG- 601) brush-on water-based vinyl acrylic
             sealing mastic.
          2. Outdoor application:

                  a. Hardcast “Versa-Grip” (VG-102) brush-on indoor/outdoor water-based
                     polyester/synthetic resin sealant with UV inhibitors.
                  b. Hardcast “Aluma-Grip” (AFT-701) pressure sensitive sealant on a roll. Two
                     mil (0.05-mm) aluminum foil backing, peel-off release liner, 33-mil (0.8-mm)
                     modified elastomeric butyl sealant (100 percent solids). To be used outdoors
                     only.

          3. Silicone sealant (clear): Dow Corning 795, ASTM 920, Type S, Grade NS, Class 25,
             single component, indoor/outdoor application, UV resistive.

2.4       HANGERS AND SUPPORTS

      A. Hangers: Galvanized sheet steel, or round, galvanized steel, threaded rod.

          1. Hangers installed in corrosive atmospheres: Electro-galvanized, all-thread rod; or
             hot-dipped-galvanized rods with threads painted with zinc-rich paint after installation.
          2. Straps and rod sizes: Conform to SMACNA HVAC DCS fro sheet steel width and
             gauge and steel rod diameters.


DUCTS                                                                                                   15810 – 3
INDEFINITE QUANTITY TERM CONTRACT                                                            REVISED July 03
University Of Maryland College Park


      B. Duct attachments: Sheet metal screws, blind rivets, or self tapping metal screws;
         compatible with duct materials.

2.5       FABRICATION

      A. Verify field measurements and resolve conflicts, before beginning to fabricate ductwork,
         as specified in Part 3 below.

2.6       DUCT CONSTRUCTION

      A. Construct ductwork using the Duct Construction Schedule on the drawings. Schedule
         includes duct system pressure class requirements, minimum sheet metal gauges,
         leakage allowances, and maximum reinforcement spacing. These requirements exceed
         the requirements of SMACNA HVAC DCS.

      B. Construct ductwork of galvanized steel, except where another material is noted on
         drawings or specified.

      C. Construct gravity duct systems (nonfan-powered), such as pressure relief and transfer, in
         accordance with SMACNA HVAC DCS minimum of one inch pressure class unless
         otherwise scheduled.

      D. Crossbreak or bead ducts of dimensions of 12 inches (305 mm) and over in pressure
         classes under 2 inches (500 Pa).

      E. Plenums, casings, and access doors: Construct in accordance with SMACNA HVAC
         DCS.

          1. Casings and plenums for negative pressures greater than 3 inches wg (747 Pa):
             Construct in accordance with SMACNA RIDCS.
          2. Where casings and plenums are on the suctions side of fans, and negative pressure
             which exceeds their construction class may occur, provide safety relief panels or
             dampers as indicated on drawings.

      F. Joint connections shall be constructed in accordance with SMACNA HVAC DCS, or with
         a manufactured duct connection system equal to Ductmate Industries “Ductmate,”
         selected to assure compliance with leakage factors indicated on the drawings.

      G. Engineered duct systems using metal gauges or reinforcing less than required in the
         schedules on the drawings are not acceptable.

      H. Where not otherwise specified, scheduled, or detailed, construct ductwork in accordance
         with SMACNA HVAC DCS.

PART 3 – EXECUTION

3.1       INSTALLATION, GENERAL

      A. Before fabricating ductwork, make field measurements and coordinate layout of ductwork
         shown on the drawings with building components and work of other trades. Resolve
         conflicts and obtain written approval for deviations before fabrication.

      B. Provide duct systems complete with built-in accessories as specified herein, in other
         sections of the specifications, as indicated on the drawings, and, where not otherwise
         indicated, in accordance with SMACNA HVAC DCS.


DUCTS                                                                                                15810 – 4
INDEFINITE QUANTITY TERM CONTRACT                                                                REVISED July 03
University Of Maryland College Park


3.2       INSTALLING METAL DUCTWORK

      A. Provide ductwork shown on drawings and specified herein.

      B. Ductwork shall not penetrate rated partitions where fire or smoke dampers are indicated
         on the drawings. Connect ductwork only after the damper installation is complete and
         accepted, as specified in Section 15820, Duct Accessories.

      C. Connecting duct to louver: Provide angles or damper collars as required. Slope duct
         down toward louver. Blank off any part of louver not required to be open, with double pan
         panels constructed of the same material as the connecting duct, 15 inches (38 mm) thick
         and insulated with 1.5 inches (38 mm) of fiberglass insulation. Seal connection.

      D. Install metal ductwork neat in appearance. Interior surfaces shall b smooth and free of
         obstructions. Duct lines shall be true and smooth. Where ducts pass through openings
         in partitions, ceilings and floors, fit them with trim angles to close joint between duct and
         construction.

      E. Support ductwork on metal straps or rods in accordance with SNACNA HVAC DCS and
         as specified. Comply with manufacturers’ load ratings and application data for each type
         of support and fastener.

          1. Connections to substrate:

              a. Bar joists: Suspend from top chord or panel points.
              b. Concrete: Inserts or fasteners specified in section, Hangers, Supports, and
                 Anchors. Install inserts before placing concrete.
              c. Structural Steel: Beam clamps.
              d. Do not support ductwork from gypsum roof deck supports or metal deck.

          2. Ducts 54 inches (1372 mm) wide and under: Strap hangers shall extend down sides
             of ducts and attach to underside with at least two sheet metal screws per strap.
             Straps shall be made of the same metal as the ducts they are attached to.

          3. Ducts over 54 inches (1372 mm) wide: Support on trapeze hangers formed of
             structural angle irons and hanger rods in accordance with SMACNA HVAC DCS.

          4. Round ducts: Support on rods or galvanized straps, and bands, as shown in
             SMACNA HVAC DCS and in accordance with manufacturer’s recommendations.

          5. Support horizontal ducts within 2 feet (610 mm) of each elbow and within 4 feet (1220
             mm) of each intersection, in addition to spacing required by SMACNA.

          6. Support vertical ducts at a maximum interval of 16 feet (4.9 m) and at each floor.

      F. Except in systems within minimum velocity standards, contractor has the option to
         eliminate reducing transitions and extend ductwork full size, providing space is available
         and conflict with work of other trades does not occur.

      G. Make bends and turns in ductwork using offsets and curved or square elbows as
         indicated on the drawings. Provide full radius of elbows (centerline radius equals 1.5
         times duct width). Provide turning vanes in square elbows, as specified in Section
         15820, Duct Accessories. Make 90-degree brand duct connections using 45-degree
         entry fittings where indicated.




DUCTS                                                                                                    15810 – 5
INDEFINITE QUANTITY TERM CONTRACT                                                                REVISED July 03
University Of Maryland College Park

      H. Provide for and install in ductwork all automatic control systems dampers, thermometers,
         coils, sound attenuators, duct accessories and similar equipment furnished under this or
         other sections of the specifications. Where ATC dampers with frames and other
         accessories are mounted in ductwork, the ducts shall connect to the accessory frame in
         manner to provide 100 percent free area for air passage. Seal duct connections to
         frames with gaskets or duct sealant. Secure connections with pop rivets or sheet metal
         screws spaced no more than 3 inches (75 mm) on centers around both sides of entire
         frame. Provide angle iron or channel frames as required for mounting ATC dampers and
         manual dampers over weatherproof louvers for air intakes and exhaust.

      I.   Generally, it is intended that all horizontal ductwork be a minimum of 10 inches (255 mm)
           above suspended ceiling (where applicable) to allow for removal of ceiling panels and
           ceiling-mounted light fixtures and devices.

      J.   Large ductwork in mechanical equipment rooms, such as outside air, return air, and
           exhaust air duct connections to fans, air handling units, plenums, and appurtenances,
           shall be sufficiently braced with angle irons to prevent vibration and duct damage, and to
           reduce noise level.

      K. Flashing of ducts through outside walls shall be as detailed on the drawings.

      L. Where noted on the drawings provide sheet metal drain troughs under piping.

3.3        SEALING DUCTWORK

      A. Ducts shall be sealed so that they meet leakage factors scheduled on the drawings.

      B. Prior to sealing, ductwork shall be clean and dry, free of oil or grease.

      C. Apply sealant in accordance with the manufacturer’s recommendations.

      D. Product application:

           1. Galvanized steel: Brush-on or pressure sensitive sealant, as applicable.
           2. Aluminum: Silicone sealant.
           3. Stainless steel: Not applicable.

      E. Allow time for sealant to dry or cure, in accordance with manufacturer’s
         recommendations, before leak testing.

3.4        IDENTIFICATION

      A. Mark ductwork in accordance with requirements for identification specified in Section
         15050, Basic Mechanical Materials and Methods.

3.5        AIR DUCT LEAKAGE TESTS – IF REQUIRED

      A. Leakage test procedures shall be in accordance with SMACNA Leakage Test Manual.

      B. After installation and prior to insulating, test the ductwork for air leakage. Duct s to be
         tested, test pressures, and leakage factors (maximum volume of leakage per 100 sq ft
         (9.3 sq m) of duct surface area) shall be as scheduled on the drawings.

      C. Conduct tests before any equipment is connected that would be subject to damage from
         the test pressure. Provide temporary blank-offs or caps.




DUCTS                                                                                                   15810 – 6
INDEFINITE QUANTITY TERM CONTRACT                                                                REVISED July 03
University Of Maryland College Park

      D. Notify parties whose presence is necessary for the test; and in all cases, the Engineer
         and testing and balancing subcontractor at least two normal work days prior to the actual
         test.

      E. While system is under test pressure, survey joint for audible leaks. Mark leakage points,
         shut down blower, and make repairs. Retest after duct sealant has dried or cured.

      F. If test duct sections exceed the allotted leakage levels, locate sources of leakage, make
         repairs and repeat test procedures until acceptable leakage levels are demonstrated.

      G. During the installation, continuously examine ductwork to ascertain that it is sealed
         properly.

3.6       CLEANING

      A. Where ducts will be exposed and therefore are required to be painted, remove labels
         used for construction and clean surfaces ready for painting.


                                        END OF SECTION
                                  Leakage test form follows Section




DUCTS                                                                                                   15810 – 7
INDEFINITE QUANTITY TERM CONTRACT                                                           REVISED July 03
University Of Maryland College Park



PROJECT NAME _________________________________________________PROJECT NO.________                                                        PAGE ______OF _______
                                                   AIR DUCT LEAKAGE TEST SUMMARY
AIR SYSTEM ___________________________               LEAKAGE CLASS (GL) __________
FAN CFM (Q) ___________________________              SPECIFIED TEST PRESSURE (Pt) __________
                                                DUCT CONSTRUCTION PRESSURE CLASS (Pc)_________


                        DESIGN DATA                                                             FIELD TEST DATA RECORD

                                 ALLOWABLE LEAKAGE                         DIAMETER           PRESSURE "W.G.

                   SURFACE
                                FACTOR                                                                  ACROSS                     PERFORMED            WITNESSED      ACTUAL
   SUBJECT DUCT    AREA IN                   CFM (TEST SECTION)   ORIFICE        TUBE          DUCT                   DATE
                               CFM/100 FT2                                                              ORIFICE                    8Y                   BY             CFM
                   FT2
 TOTAL SYSTEM                                                       ****              ***        **         *****       ****             ****                ****

 TEST SECTION(S)




                                                                                                                    SMACNA HVAC Air Duct Leakage Test Manual-1st Ed.
DUCTS                                                                                                 15810 – 8
INDEFINITE QUANTITY TERM CONTRACT     REVISED July 03
University Of Maryland College Park




DUCTS                                        15810 – 9
INDEFINITE QUANTITY TERM CONTRACT                                                       REVISED July 03
University Of Maryland College Park

                              SECTION 15820 – DUCT ACCESSORIES

PART 1 – GENERAL

1.1        SECTION INCLUDES

      A. Products and devices installed in ducts.

      B. Flexible joint fabric.

      C. Bird screen.

      D. Volume extractors.

      E. Instrument test holes.

      F. Air turning vanes.

      G. Spin-in or dovetail fittings.

      H. Duct access doors.

      I.   Dampers.

      J.   Fire dampers.

      K. Duct clamps.

1.2        RELATED SECTIONS

      A. Louvers – Section 15854

      B. Duct-mounted Detectors – Section 13851

      C. Diffusers, Registers and Grilles – Section 15851

1.3        REFERENCES

      A. ANSI/AMCA 210: Laboratory Methods of Testing Fans for Rating.

      B. ASTM E 477: Test for Measurement of Acoustical and Airflow Performance of Duct Liner
         Materials and Prefabricated Silencers.

      C. NFPA 90A: Installation of Air Conditioning and Ventilating System.

      D. NFPA 90B: Installation of Warm Air Heating and Air Conditioning Systems.

      E. SMACNA-05: Fire, Smoke, and Radiation Damper Installation Guide for HVAC Systems.

      F. SMACNA HVAC DCS: HVAC Duct Construction Standards, Metal and Flexible.

      G. UL 555: Fire Dampers.

1.4        SUBMITTALS




DUCT ACCESSORIES                                                                                15820 - 1
INDEFINITE QUANTITY TERM CONTRACT                                                                 REVISED July 03
University Of Maryland College Park

      A. General: Comply with Section 01330.

      B. Product data: Each type of duct accessory included in project.

          1. Include manufacturer’s written installation instructions for each type of fire damper.

      C. Shop drawings: Detail equipment assemblies and indicate dimensions, loadings, required
         clearances, method of assembly, components, locations, and size of each field
         connection. Detail these accessories:

          1. Special fittings and manual and automatic volume damper installations.
          2. Fire damper installations, including sleeves and duct access doors and panels.

      D. Certifications: Certified test data for dynamic insertion loss; sound power levels; airflow
         performance data, and static-pressure loss.

1.5       QUALITY ASSURANCE

      A. Work of this section shall comply with NFPA 90A and 90B, and SMACNA HVAC DCS.

1.6       EXTRA MATERIALS

      A. Provide one spare link for every four fire dampers installed in the project, with a minimum
         of two of each type.

      B. Deliver and store spare links in the cabinet for spare automatic sprinklers, or as directed
         by the Owner.

PART 2 – PRODUCTS

2.1       ACCEPTABLE MANUFACTURERS

      A. Manufacturer’s names and specific products are described in the articles below to set a
         standard for materials, quality of construction, options and details, and performance.
         Provide named products, or equal products by other named manufacturers.

2.2       MATERIALS

      A. Ducts: As specified in Section 15810.

      B. Flexible joint fabric: Woven glass fabric with coating, complying with UL 214 for fire
         retardance and NFPA 90A for use in duct systems.

          1. For use indoors: Equal to Ventfabrics “Ventglas,” coated with polychloroprene
             (DuPont “Neoprene”), 30 ounces per square yard.

          2. For use outdoors: Equal to Ventfabrics “Ventlon,” coated with DuPont weather-,
             sunlight- and ozone-resistant “Hypalon,” 26 ounces per square yard.

      C. Bird screen: ASTM E 437, general industrial-use wire cloth, Grade C, medium light or
         heavier, nominal 0.5-inch (13-mm) mesh and 0,063-inch (1.6-mm) wire diameter,
         aluminum or stainless steel.

          1. Frame: Removable, rewirable, of same material and finish as the duct or accessory
             to which it is installed.



DUCT ACCESSORIES                                                                                         15820 - 2
INDEFINITE QUANTITY TERM CONTRACT                                                               REVISED July 03
University Of Maryland College Park

2.3       MANUFACTURED UNITS

      A. Volume extractors: Equal to hart & Cooley “Vetrol” Type AVLR, with equal to Young
         Regulator Co. No. 429 FD end bearing and No. 443-B 3/8-inch operator; or Type VLK,
         with worm-driven mechanism accessible thought face of diffuser or grille with and 18-
         inch-long removable key operator.

      B. Instrument test hole for ductwork balancing stations: Equal to Ventfabrics “Ventlock” No.
         699 or 699-2 as required for insulation thickness, with gasket for base, and threaded cap.

      C. Air turning vanes: Double vane type, constructed in accordance with SMACNA HVAC
         DCS, from the same material as the duct.

      D. Spin-in or dovetail fittings in accordance with SMACNA NVAC DCS are acceptable for a
         round take-off connection from a rectangular duct, provided they meet the duct pressure
         classification.

2.4       DUCT ACCESS DOORS

      A. SMACNA standard construction, Air Balance, Inc., Model FSA-100 or equal by Ruskin,
         Inc., Airstream Products Company, Inc., or Commercial Accoustics. Access doors to fire
         protection devices shall comply with NFPA 90A. Access doors shall be minimum size 16
         inches (4096mm) by 16inches (406 mm), or 16 inches (406 mm) by maximum duct size.

      B. Construction: Door and frame fabricated of 22 gauge galvanized steel.

      C. Door: hinged with continuous piano hinge; continuous foam gasket around door
         perimeter; two cam latches. Insulated doors shall be double pan construction, one inch
         (25 mm) thick with one inch (25mm) thick minimum 3.5 pound (56 kg per cubic meter)
         density fiberglass insulation cut full to require forcing into the pan.

      D. As and option, provide round access doors equal to the Ventfabrics “Ventlok Twist-In”
         doors, complete with safety holding cable, 12 inches (305 mm) diameter.

2.5       DAMPERS

      A. Where aluminum duct is required by the specifications, dampers shall be all aluminum
         construction.

      B. Manual volume dampers:

          1. 13 inches (330 mm) and larger in height: Balanced multi-louver, opposed-blade type
             with maximum blade width of 6 inches (155 mm), equal to Ruskin MD 35/OB with
             PTFE-filled non-corrosive bearings and 0.375-inch (9.5-mm) control shaft; and with
             Young Regulator Co. Model No. 443B-3/8 damper regulators.

          2. 12 inches (305 mm) or less in height; Fabricated from 16 gauge metal with hemmed
             edges, 0.375-inch (9.5-mm) square rod, Young Regulator Co. Model No. 443B-3/8
             regulator and Model No. 429 FD end bearing.

      C. Pressure relief or static pressure-control counterbalanced backdraft dampers: Equal to
         Ruskin Type CBS-4 fabricated with steel channel frame with 0.3125-inch (7.9-mm)
         mounting holes. Blades shall be 14 gauge aluminum with polyurethane foam seals on
         the edges, maximum width 10 inches (255 mm), mounted on a steel shaft with “oilite"
         bearings. Individual blades shall be adjustable for final setting in the field. Frame shall



DUCT ACCESSORIES                                                                                       15820 - 3
INDEFINITE QUANTITY TERM CONTRACT                                                              REVISED July 03
University Of Maryland College Park

          have a rust-inhibitive coating applied at the factory.

      D. Counterbalanced backdraft dampers for use in fan discharge: Equal to Ruskin Type CBS-
         7 fabricated with galvanized steel channel frame with 0.3125-inch (7.9-mm) mounting
         holes. Blades shall be 16 gauge galvanized steel, maximum width 10 inches (255 mm),
         mounted on a steel shaft with ball bearings. Individual blades shall be connected
         together to work in unison. Frame shall have a rust-inhibitive coating applied at the
         factory.

2.6       FIRE DAMPERS

      A. Fire dampers should be in accordance with NFPA 90A, local building and fire code
         requirements and contract documents; and UL 555 labeled for use in dynamic system.
         Dampers shall be equal to the Air Balance Models specified below.

      B. Blades: Galvanized formed steel, folding, with 100 percent interlocking blade joints to
         form a continuous steel curtain when closed. Joints shall provide 180-degree (3.141-
         radian) free movement, and shall be operated by a stainless steel constant-force spring.

      C. Sleeves: Provide in rated partition or floor penetrations for each fire damper. Sleeves,
         angles, and method of fastening shall be in accordance with manufacturer’s installation
         instruction, contract documents, and NFPA 90A.

      D. Dampers shall be Model D19 Series for use in two-hour rated partitions and D39 Series
         for use in three-hour rated partitions.

          1. Dampers located in rated partitions between non-ducted transfer air grilles, or
             dampers terminating at a ducted wall grille or register, shall be type AL and shall be
             installed within or behind grille or register. Access to these dampers shall be by
             removal of grille or register.

          2. Dampers connected to supply air ductwork shall provide 100 percent free opening
             and shall have type CL frame, with welded seam housing, for square, rectangular,
             round or oval duct connection. Those connected to return air or exhaust air ducts
             shall have BL or type ML-2 (welded) frames providing 90 percent free opening. Air
             Balance Inc. type ML-2 with integral factory welded sleeve is acceptable for use with
             return or exhaust air ducts in lieu of separate frame and wall sleeve.

2.7       ACCESSORIES

      A. Duct clamps for flexible duct and flexible fabric connections: Positive locking drawbands
         able to conform to any shape. Fabricate from a single piece of galvanized steel, with
         zinc-plated steel screw and buckle. Equal to “59 Series” manufactured by Ideal Division,
         Parker Hannifin Corporation.

      B. Non-metallic duct clamps for flexible duct and flexible fabric connections: Heavy-duty
         adjustable type equal to products of Tyton Corporation, for 12-inch (305-mm) diameter
         and smaller flexible ductwork, complying with UL 181.

      C. Instrument test holes: Cast iron or cast aluminum to suit duct material, including screw
         cap and gasket. Size to allow insertion of pitot tube and other testing instruments, and
         length to suit duct insulation thickness.

PART 3 – EXECUTION

3.1       INSTALLATION

DUCT ACCESSORIES                                                                                      15820 - 4
INDEFINITE QUANTITY TERM CONTRACT                                                              REVISED July 03
University Of Maryland College Park


      A. Duct accessories shall be mounted or installed properly in accordance with the
         manufacturer’s instructions and as indicated on the drawings.

3.2       INSTALLING CONNECTIONS AND SCREENS

      A. Install in each duct connection to motor–driven equipment, and other location where
         shown on drawings, a flexible fabric connection to prevent vibration being transmitted
         from equipment to ductwork. Securely clamp the cloth to the ducts and duct collars with
         duct clamps, providing 1 inch (25 mm) slack. Stitch seams with fiberglass thread.

          1. Non-metallic clamps: Install in accordance with manufacturer’s recommendations,
             using manufacture’s special tools.

      B. Install bird screen in outside air connections.

3.3       INSTALLING MANUFACTURED UNITS

      A. Provide necessary devices to balance the air flow to produce air quantities at outlets as
         indicated on the drawings.

      B. Provide balancing point stations where indicated on drawings and where required for air
         balancing. Coordinate work with requirements of Section 15950. Testing, Adjusting, and
         Balancing; final locations shall be as directed by the balancing and testing subcontractor.
         Stations shall consist of test holes spaced 6 inches (150 mm) on centers across bottom
         or side of duct. Install test holes before ducts are insulated.

      C. Provide turning vanes in 90-degree square elbows.

      D. Provide spin-in or dovetail fittings as indicated on the drawings.

      E. Installing duct access doors:

          1. Install duct access doors in ductwork for access to fire dampers, smoke dampers,
             ATC dampers, controls, vortex dampers, duct coils, control devices, and any other
             devices, equipment, or components requiring maintenance, service, or adjustment
             and located inside ducts or adjacent equipment.

          2. Provide OSHA-approved labels on doors enclosing fire protection devices. Labels
             shall have lettering at least ½ inch (13 mm) high describing the protection device
             enclosed.

      F. Installing air control devices:

          1. Install manual volume dampers, volume extractors, and other devices at locations
             indicated on drawings and where required to properly balance the systems and to
             deliver the air quantities indicated. Each damper and device shall have substantial
             operators of proper size with locking facilities. Volume dampers shall be equipped
             with locking type regulators.

          2. Install automatic control dampers.

3.4       INSTALLING FIRE DAMPERS

              A. Fire dampers are an integral part of the rated partition or floor being penetrated.
                 Install sleeves and dampers before beginning installation of the duct system

DUCT ACCESSORIES                                                                                       15820 - 5
INDEFINITE QUANTITY TERM CONTRACT                                                         REVISED July 03
University Of Maryland College Park

             being connected. Do not begin installing ducts until rated assembly, including
             installed dampers, has been completed.

         B. Install dampers where indicated and in accordance with the applicable
            requirements of the following:

             1. Details on drawings.

             2. NFPA requirements.

             3. Local building code.

             4. Manufacturer’s installation instructions.

             5. SMACNA-05.

         C. Install fire dampers in sleeves. Coordinate with other trades to properly frame
            openings so that damper and sleeve assembly can be secured in partition on
            floor.

             1. In no case shall dampers and sleeves be used as a lintel for supporting the
                wall above the damper. Provide separate steel angles on both sides of wall
                or floor slab to hold damper and sleeve firmly in place.

             2. Sleeve thickness and retaining angle size are contingent on type of duct
                connection, duct size and damper manufacturer’s requirements. See
                SMACNA recommendations and NFPA requirements.

         D. Coordinate voltages with manufacturer of motorized dampers.

         E. Provide dampers of proper size for ceiling diffusers indicated to have fire-rated
            dampers. Provide protective thermal blanket of proper size for ceiling diffuser.

         F. After damper installation is complete and required ductwork connected, test
            operation of damper by releasing holding mechanism to see that damper
            operated freely and properly and closes tight. Make adjustments if required and
            rest holding mechanism.


                                    END OF SECTION




DUCT ACCESSORIES                                                                                 15820 - 6
INDEFINITE QUANTITY TERM CONTRACT                                                                 REVISED July 03
University Of Maryland College Park

                                      SECTION 15830 - FANS

PART 1 – GENERAL

1.1       SECTION INCLUDES

      A. Centrifugal fans.

      B. Exhaust, circulating, and supply fans.

      C. Accessories.

1.2       RELATED SECTIONS

      A. Curbs: Section 15061

      B. Vibration control support: Section 15070

      C. Motors: Section 15053

1.3       SUBMITTALS

      A. General: Comply with Section 01330.

      B. Shop drawings detailing equipment assemblies and indicating dimensions, weights,
         loadings, required clearances, method of field assembly, components, and location and
         size of each field connection.

      C. Product data: Include rated capacities of each unit, weights (shipping, installed, and
         operating), furnished specialties, accessories, and the following:

          1. Certified fan performance curves with system operating conditions indicated. Include
             static pressure, brake horsepower, and static efficiency plotted against air volume.

          2. Certified fan sound power ratings.

          3. Motor ratings and electrical characteristics, and motor and electrical accessories.

          4. Material gauges and finishes, including color charts.

          5. Dampers, including housing, linkages, and operators.

      D. Wiring diagrams detailing power and control wiring and differentiating clearly between
         manufacturer-installed and field-installed wiring.

      E. Maintenance data as required in Division 1 and Section 15050.

      F. Submit product data which verifies compliance with ASHRAE 90.1, or provide certified
         performance ratings by a qualified independent testing agency.

1.4       QUALITY ASSURANCE

      A. Fans shall be tested and rated in accordance with the applicable AMCA Standard Test
         Code and Certified Rating Program and bear AMCA Certified Air Rating Seal.




FANS                                                                                                     15830 - 1
INDEFINITE QUANTITY TERM CONTRACT                                                               REVISED July 03
University Of Maryland College Park

      B. Fan selections shall be made to the right of the peak static pressure point, but not on any
         “flat” portion of the fan curve. Generally, fan selection shall be in the 50 percent to 80
         percent range of wide open volume.

      C. HVAC equipment shall meet the energy performance requirements of ASHRAE 90.1.

      D. UL label and local testing (if required): As specified in Section 15050, Basic Mechanical
         Materials and Methods.

1.5       COORDINATION

      A. Coordinate the installation of roof curbs, supports, and roof penetration. Fan installation
         shall not reduce weather-tightness of roof nor violate roof warranty.

      B. Coordinate colors selected for roof-mounted fans with colors of the other roof-mounted
         equipment.

1.6       EXTRA MATERIALS

      A. Provide adjustments in drives and sheaves and belts as required at time of system
         balancing to obtain the airflow and static pressure indicated on drawings.

PART 2 – PRODUCTS

2.1       ACCEPTABLE MANUFACTURERS

      A. Scheduled units are the basis for design of the project. The following listed
         manufacturers also provide units of acceptable quality. If units by any of these other
         manufacturers should be proposed, verify that they meet requirements specified in the
         article “Product Substitutions” in Section 01631, and submit shop drawings as specified in
         article 1.3 above.

      B. Exhaust, circulating, and supply fans

          Twin City Fan and Blower Co.
          Buffalo Forge Company
          Greenheck Fans
          New York Blower Company
          Peerless, Division of H. K. Porter Company, Inc.

2.2       FANS, GENERAL

      A. Fan size, capacity, class, arrangement, accessories and discharge shall be as scheduled
         on the drawings.

      B. Motors shall meet the requirements of Section 15053, Motors, including power factor and
         efficiency.

      C. Belt drives shall be provided with guards meeting OSHA and MOSHA requirements.

      D. Fans shall have self-aligning, ball-type bearings designed for thrust load, and grease
         fittings shall be accessible for relubrication. Fans shall be statically and dynamically
         balanced.




FANS                                                                                                   15830 - 2
INDEFINITE QUANTITY TERM CONTRACT                                                              REVISED July 03
University Of Maryland College Park

      E. Motors for belt-driven units shall have adjustable variably pitched cast iron sheaves to
         allow a 10 percent increase or reduction in speed. Belts shall be sized for minimum 150
         percent brake horsepower (bhp).

2.3       EXHAUST, CIRCULATING, AND SUPPLY FANS

      A. In-line fan (square): Fan housings, fan wheel and other parts used in the fabrication of
         the units shall be aluminum or steel of design and gauge standard with the manufacturer.
         Belt-driven units shall have the motor externally mounted with adjustable motor sheave
         and base. Lubricating tubes shall be provided from the shaft bearings to the housing for
         lubrication. Units shall have support brackets for mountings as shown on drawings.
         Impeller shall be airfoil blades welded to the hub and have non-overloading
         characteristics. Wheel shall be statically and dynamically balanced. Wheels shall be
         backward-inclined, non-overloading, with aluminum blades. Inlet cones shall be
         provided. Direct drive units shall have motors out of air stream and shall be prewired to
         an external twist lock receptacle.

      B. Wall propeller fans: Belt driven, with all-welded non-overloading steel or aluminum
         propeller, steel panel, heavy-wall tubular steel frame, and motor-side guard (wireframe on
         interior side). Adjustable V-belt drive shall have cast-iron sheaves and oil- and heat-
         resistant belts. Bearings shall be permanently lubricated, resiliently mounted in neoprene
         rings within a formed steel plate with provision for belt-tension adjustment, supported by
         a tabular steel framework.

      C. Utility set: Medium-duty for static pressures up to 3.0 inches. Steel sides and scroll band
         shall be lock-formed together, airtight, rigid. Impeller shall be fabricated of aluminum with
         hollow airfoil, power-limiting, backward-curved blades for quiet and efficient operation.
         Impeller shall be statically and dynamically balanced. The impeller, venturi and inlet cone
         shall be die-formed to provide consistent uniformity and alignment. Bearings shall be
         pre-lubricated oversized ball bearing in a captive housing. Bearing shall be resiliently
         mounted in neoprene rings for vibration isolation. Unit shall be belt-driven with adjustable
         pitch cast-iron sheaves. Motor shall be mounted on a steel platform within the drive
         compartment. Motor base shall be slotted for belt adjustment. Provide the units with
         access door in fan scroll.

2.4       ACCESSORIES

      A. Bird screens: Specified in Section 15820, Duct Accessories.

      B. A disconnecting switch without overload protection shall be included under the weather
         hood of roof-mounted units, completely factory-wired to motor. Motors for directly driven
         units shall be provided with solid-state variable speed control where scheduled on the
         drawings.

      C. Provide each unit with self-operating aluminum backdraft damper and frame unless
         indicated otherwise on the drawings. Damper blades shall operated in unison and shall
         be counterbalanced or otherwise provided with facilities to positively open under fan
         suction and to close tight when subject to backdraft.

      D. Each fan shall be identified with a fan number no less than 0.5 inch high, ahs shown in
         the fan schedule, on an aluminum strip riveted to hood of roof fans and on the motor side
         of frame for wall fans.

      E. Where called for on the drawings, provide explosion-proof motors with explosion-proof
         toggle disconnections.



FANS                                                                                                     15830 - 3
INDEFINITE QUANTITY TERM CONTRACT                                                               REVISED July 03
University Of Maryland College Park

PART 3 – EXECUTION

3.1       INSTALLATION, EXHAUST, CIRCULATING, AND SUPPLY FANS

      A. Fans shall be installed in compliance with the manufacturer’s recommendations.
         Ventilating and ceiling exhaust fans shall be supported from the building structure, not
         attached to the ceiling suspension members or discharge grille system.

      B. Coordinate with air balancing and provide adjustments, sheaves, and belts as required in
         Part 1 above to obtain the airflow and static pressure indicated on the drawings.

3.2       ACCESSORIES

      A. Fans without supply duct on fan inlet shall be provided with bird screens.

3.3       OPERATING INSTRUCTION

      A. As specified in Section 15050, provide operating instructions.

      B. Provide at least 2 hours of additional instruction time for the equipment specified in this
         section, during a period of not more than 60 days.

                                          END OF SECTION




FANS                                                                                                   15830 - 4
INDEFINITE QUANTITY TERM CONTRACT                                                               REVISED July 03
University Of Maryland College Park

                    SECTION 15851 – DIFFUSERS, REGISTERS, AND GRILLES

PART 1 - GENERAL

1.1       SECTION INCLUDES

      A. Ceiling- and wall-mounted diffusers, registers, and grilles.

1.2       RELATED SECTIONS

      A. Louvers: Section 15854.

      B. Testing, Adjusting and Balancing Section 15950.

1.3       REFERENCES

      A. NFPA: 90A: Standard for the Installation of Air-Conditioning and Ventilating Systems.

1.4       SUBMITTALS

      A. General: Comply with Section 01330.

      B. Product data: Each type of diffuser, register and damper, and grille, including frames and
         accessories, and performance data.

      C. Shop drawings:

          1. Schedule, including size, location, function, and finish of each diffuser, register, and
             grille.

          2. For each air control device, provide information required to balance the system.
             Include the factor for each size and type of device for converting velocity to volume.

              a. Include this information in Operating and Maintenance Manuals.

      D. Samples: Manufacturer’s complete line of color chips for anodized linear grilles and
         diffusers.

PART 2 – PRODUCTS

2.1       ACCEPTABLE MANUFACTURERS

      A. Grilles, registers, and diffusers:

          Hart and Cooley.
          Krueger Manufacturing Company.
          Nailor Industries, Inc.
          Price Company.
          Titus Products.

2.2       DIFFUSERS, REGISTERS, AND GRILLES

      A. Devices of one of the names manufacturers, with performance data, characteristics,
         features, and accessories of the model or type specified or indicated on the drawings.
         Model numbers specified below are Krueger except as noted otherwise.



DIFFUSERS, REGISTERS, AND GRILLES                                                                       15851 - 1
INDEFINITE QUANTITY TERM CONTRACT                                                               REVISED July 03
University Of Maryland College Park

      B. Coordinate margin and frame of each device with the substrate in which it will be
         installed. Where devices are installed in suspended ceilings, assure that they will fit
         correctly in the type of suspension supports shown or specified.

      C. Materials and finish:

          1. Construction:

              a. Steel where mounted in ceilings.

              b. Either aluminum or steel where mounted in walls near ceilings.

              c.   Heavy-duty steel where mounted in walls near floor.

              d. Welded or mechanically fastened cores in diffusers located in gymnasium.

          2. Aluminum devices shall be all aluminum construction, including dampers, where
             specifications call for aluminum or stainless steel ductwork.

          3. Finish: Manufacturer’s standard white enamel, suitable for final finish or for field
             painting, unless indicated otherwise.

      D. Where narrow margin grilles and registers are specified or indicated on the drawings,
         they shall be provided with mounting frames except where mounted on ductwork.

2.3       SUPPLY DIFFUSERS

      A. Throw length is based on performance data of the scheduled or specified manufacturer
         and model. Select units of other manufacturers whose performance data meet the
         required conditions. Throw direction of square and rectangular ceiling diffusers shall be
         four-way unless otherwise indicated on the drawings.

      B. Square and rectangular ceiling diffusers: Series SH with square or rectangular neck and
         removable core. Each unit shall have a straightened grid and opposed-blade damper.
         The grids and dampers shall be set at right angles to one another.

          1. Frame Style 23 (panel diffuser): Diffusers mounted in nominal 24-inch by 24-inch or
             24-inch by 48-inch flat steel panels, to lay into suspended ceiling grid of acoustical
             ceilings.

          2. Frame Style 22 (surface mount): Diffuser with flat frame to mount at underside of
             plaster or gypsum wallboard ceilings.

      C. Square, adjustable diffuser, with round neck: 1400 Series, 24-inch by 24-inch nominal
         panel size, round neck size indicated on drawings, infinitely field-adjustable vanes for
         discharge pattern from vertical to horizontal, butterfly type damper with concealed
         adjustment, duct-mounted straightening grid (shipped loose for field installation).

          1. Frame Style 23: To lay into 24-inch by 24-inch suspended ceiling grid.

          2. Frame Style 22: Surface-mount frame to mount in plaster or gypsum wallboard
             ceiling.

2.4       SUPPLY GRILLES AND REGISTERS




DIFFUSERS, REGISTERS, AND GRILLES                                                                      15851 - 2
INDEFINITE QUANTITY TERM CONTRACT                                                                 REVISED July 03
University Of Maryland College Park

      A. For registers, provide opposed-blade dampers with linkage and adjustment through grille
         face with a screwdriver or allen wrench.

      B. Wall-mounted near ceiling: Grilles 880H (steel) 5880H (aluminum); registers 5880H
         (aluminum); double deflection with horizontal face bars, minimum 1.25-inch (32-mm)
         overlap margin.

      C. Ceiling mounted: Registers 5180-OBD (aluminum), individually adjustable curved air
         deflection blades, 1-, 2-, 3-, or 4-way air pattern, minimum 1.25-nch overlap margin.

          1. Provide alignment tabs in frame where multiple units are joined and mitered corners
             at 90 degree turns. For registers, provide separate opposed-blade dampers for
             installation in duct behind grille and concealed fastening assembly.

2.5       RETURN AND EXHAUST GRILLES AND REGISTERS

      A. For registers, provide opposed-blade dampers with linkage and adjustment thought grille
         face with a screwdriver or allen wrench.

      B. Ceiling-mounted and wall-mounted near ceiling: Grille S-580H (aluminum), Register S-
         580H (aluminum). Fixed horizontal face bars set at 35 to 45 degree deflection, minimum
         1.25-inch (32-mm) margin.

      C. Square and rectangular ceiling diffusers used for return or exhaust: Same as specified
         above for diffuser.

PART 3 – EXECUTION

3.1       INSTALLING GRILLES, REGISTERS, AND DIFFUSERS

      A. Securely attach grilles, registers, and diffusers in place. Do not install the grilles and
         registers until duct interiors have been painted as specified in Section 15050, Basic
         Mechanical Materials and Methods.

      B. Install all air control devices complete with the accessories specified, securely attach in
         position. Make operating devices accessible.

      C. Adjust diffuser straightening grids to provide uniform air distribution above diffuser face.

      D. Adjust supply register deflectors to provide uniform air distribution to the areas served.

                                          END OF SECTION




DIFFUSERS, REGISTERS, AND GRILLES                                                                        15851 - 3
INDEFINITE QUANTITY TERM CONTRACT                                                 REVISED July 03
University of Maryland College Park


                                   SECTION 15854 – LOUVERS

PART 1 – GENERAL

1.1       SECTION INCLUDES

 A.       Louvers as indicated on the drawings.

1.2       RELATED SECTIONS

 A.       Ductwork: Section 15810

1.3       SUBMITTALS

 A.       General: Comply with Section 01330

 B.       Product data: Louvers.

 C.       Samples: For finish selection, manufacturer’s complete line of color chips.

PART 2 – PRODUCTS

2.1       ACCEPTABLE MANUFACTURERS

 A.       Specified models, with selected options and accessories, are intended to set a standard
          for construction, materials, finish, and engineering performance. Substitutions by other
          acceptable manufacturers must meet all requirements.

          Airstream Products Division of Penn Ventilator Company
          All-Lite Company
          Airolite Company
          Air Balance, Inc.
          Airline Products Company
          American Warming and Ventilating, Inc.
          Arrow United Industries
          Ruskin Manufacturing Division, Phillips Industries

2.2       LOUVERS

 A.       Provide louvers with free area, pressure drop, and water penetration as published in
          manufacturer’s literature for the specified models, tested in accordance with AMCA
          Standard 500. Models:

          1.    Louvers greater than 12 inches in height: Airstream Model SA with Type R sill, four
                inches deep.

 B.       Construction: 0.081 inch thick extruded aluminum stormproof sections, one-piece
          extruded aluminum jamb, head and sill sections, flanged frame, and sill with adjustable
          sill extension. Blade lengths shall not exceed four feet. For louvers more than four feet
          wide, provide vertical mullions, evenly spaced.

 C.       Bird screen: ASTM E 437, general industrial-use wire cloth, Grade C, medium light or
          heavier, nominal two-inch mesh and 0.063-inch wire diameter, aluminum, in removable
          frame.




Louvers                                                                                    15854 - 1
INDEFINITE QUANTITY TERM CONTRACT                                                   REVISED July 03
University of Maryland College Park

 D.       Accessories: Angles, moldings, cover plates, anchor bolts, and other items required for
          securing louvers in openings as detailed on the drawings, aluminum or stainless steel.
          Exposed accessories shall be finished to match the louvers.

 E.       Sizes: Shown on drawings.

 F.       Finish: Manufacturer’s standard factory-applied baked enamel or fluoropolymer finish,
          color to be selected.

2.3       BLANK-OFF PANELS

 A.       Laminated metal-faced panels, thickness 2 inch, with aluminum facing sheets front and
          back 0.032 inches thick, and rigid fiberglass insultion.

 B.       Finish: Same as louvers, except that color shall be black.

PART 3 – EXECUTION

3.1       INSTALLING LOUVERS

 A.       Place each louver plumb, level, and in alignment with adjacent work.

 B.       Use concealed anchorage where possible. Provide brass or lead washers on screws
          where required to protect metal surface and to make weathertight connections.

 C.       Form closely fitted joints with exposed connections accurately located and secured.

 D.       Install concealed gaskets, flashings, joint fillers, and insulation where required to make
          louvers weathertight. Comply with Joint Sealants Section 07900.

 E.       Blank off any section of louver not required to be open.

3.2       ADJUSTING

 A.       Restore louvers damaged during installation and construction period so that no evidence
          remains of correction work.

 B.       Clean and touch up minor abrasions in finishes with air-dried coating matching color and
          gloss of, and compatible with, factory-applied finish.


                                           END OF SECTION




Louvers                                                                                      15854 - 2
INDEFINITE QUANTITY TERM CONTRACT                                                      REVISED July 03
University of Maryland College Park


                                      SECTION 15861 – FILTERS

PART 1 – GENERAL

1.1       SUMMARY

  A.      Filters for temporary service during construction are required in the equipment sections.

  B.      Provide two sets of filters for every item of equipment requiring filters, as follows:

          1. Filters for regular service, installed before air balancing.
          2. Filters for regular service, provided as extra materials for future use.

1.2       REFERENCES

  A.      ASHRAE 52.1: Gravimetric and Dust-Spot Procedures for Testing Air-Cleaning Devices
          used in General Ventilation for Removing Particulate Matter.

  B.      ARI 850: Commercial and Industrial Air Filter Equipment.

1.3       DEFINITIONS

  A.      Temporary service: Operation of equipment during the construction period, before air
          balancing.

  B.      Regular service: Operation of equipment during air balancing and in normal use during
          occupancy.

1.4       SUBMITTALS

  A.      General: Comply with Section 01330.

  B.      Product data: For filters, include filter efficiency, rated flow capacity, and fire
          classification.

  C.      Shop drawings: Illustrate assemblies and attachments.

 D.       Closeout submittals: As required for Operating and Maintenance Manuals in Section
01720 Project Record Documents, provide a schedule of locations of filters, identifying equipment
and filter types and sizes, including prefilters and final filters.

1.5       QUALITY ASSURANCE

  A.      Provide all filters for regular service from a single manufacturer.

  B.      Test filters by methods described in ASHRAE 52.1.

  C.      Comply with ARI 850.

1.6       EXTRA MATERIALS

  A.      Disposable and throwaway filters: For each filter included for regular service, provide
          one extra filter. Identify each filter with its name and intended location and use.

  B.      Provide filters in protective packaging, with identifying labels or markings.



Filters                                                                                         15861 - 1
INDEFINITE QUANTITY TERM CONTRACT                                                    REVISED July 03
University of Maryland College Park


  C.      Except as otherwise required in Division 1, deliver to location designated by Owner, and
          shelve or stack as directed.

PART 2 – PRODUCTS

2.1       ACCEPTABLE MANUFACTURERS

  A.      The listed manufacturers and particular products are intended to set a standard for
          materials, composition, and performance. Products of other manufacturers may be
          proposed as permitted by the provisions of the article “Product Substitutions” in Section
          01631.

          1. Filters and filter-holding systems:

              AAF International.
              Continental Air Filter (Div. NiCon Filter Corp)
              Farr Company.

          2. Filter gauges:

              Dwyer Instruments, Inc.
              Weksler Instrument Corporation.

2.2       FILTERS, GENERAL

  A.      Coordinate with approved manufacturers of the various approved air handling units and
          equipment for filter size and thickness required.

  B.      Thickness: Generally, large air handling units shall have two-inch thick filters.

  C.      Filter face areas: As scheduled, or equivalent to one square foot for each 300 cfm.

2.3       THROWAWAY FILTERS

  A.      FS F-F-310, Type 1I throwaway frame and media, Grade B high dust holding capacity, of
          size and thickness to fit units.

2.4       DISPOSABLE MEDIUM-EFFICIENCY FILTERS

  A.      Farr 30/30, Class 2, thickness 4 inches, and size required for each location, disposable.

  B.      Rating in accordance with ASHRAE 52.1:

          1. Average efficiency: 25 to 30 percent.
          2. Average arrestance: 90 to 92 percent.

  C.      UL rating: Class 2.

  D.      Medium: Non-woven, reinforced cotton and synthetic fabric, minimum thickness 0.15
          inch, weight 2.5 ounces per square yard, pleated.

  E.      Medium support grid: Welded wire with an effective open area not less than 96 percent,
          bonded to medium.

          1. Performance: Medium shall not oscillate nor pull away from support grid.


Filters                                                                                       15861 - 2
INDEFINITE QUANTITY TERM CONTRACT                                                     REVISED July 03
University of Maryland College Park

          2. Design: Tapered radial pleats, supporting medium both vertically and horizontally.

  F.      Enclosing frame: High-wet-strength beverage board, with diagonal supports bonded to
          media pleats. Filter pack continuously bonded to inside of frame so that no air leaks
          around edges.

2.5       FILTER GAUGE

  A.      Gauge: Equal to Dwyer Magnehelic, Series 2000, range zero to 3 inches wg, with
          divisions of 0.10 inch.

  B.      Accessory package: To adapt the magnehelic gauge for use as a filter gauge. Package
          includes aluminum surface-mounting bracket with screws, two 5-foot lengths of 0.25-inch
          aluminum tubing, two static pressure tips, and two molded plastic vent valves, with
          integral compression fittings on both tips and valves.

PART 3 – EXECUTION

3.1       INSTALLATION, GENERAL

  A.      Before startup of each item of equipment requiring a filter, install filters for temporary
          service.

          1. Generally, provide throwaway filters for temporary service.
          2. On equipment with prefilter and final filter, provide only the specified prefilter for
             temporary service.

  B.      Immediately prior to air balancing, remove temporary filters and install filters required for
          regular service.

3.2       INSTALLING FILTER GAUGE

  A.      Mount across filter section in accordance with manufacturer’s instructions.


                                            END OF SECTION




Filters                                                                                       15861 - 3
INDEFINITE QUANTITY TERM CONTRACT                                                 REVISED July 03
University of Maryland College Park

                 SECTION 15950 – TESTING, ADJUSTING, AND BALANCING


PART 1 – GENERAL

1.1     SECTION INCLUDES

  A.    The Contractor shall engage and the Engineer shall approve an independent balancing
        and testing subcontractor.

  B.    This section includes testing, adjusting, and balancing HVAC systems to produce design
        objectives, including the following:

        1.    Balancing airflow and water flow within distribution systems, including submains,
              branches, and terminals, to indicated quantities according to specified tolerances.
        2.    Adjusting total HVAC systems to provide indicated quantities.
        3.    Measuring electrical performance of HVAC equipment.
        4.    Setting quantitative performance of HVAC equipment.
        5.    Verifying that automatic control devices are functioning properly.
        6.    Measuring sound and vibration.
        7.    Reporting results of the activities and procedures specified in this section.

1.2     RELATED SECTIONS

  A.    Testing and adjusting requirements unique to particular systems and equipment are
        included in the sections that specify those systems and equipment.

  B.    Field quality-control testing to verify that workmanship quality for system and equipment
        installation is specified in system and equipment sections.

1.3     PERFORMANCE REQUIREMENTS

  A.    Select and obtain approval of the testing and balancing subcontractor at the earliest
        possible time and before beginning ductwork installation.

  B.    The testing and balancing subcontractor shall visit the job site periodically, beginning with
        the initial stages of construction of the mechanical systems, and shall assure that the
        necessary devices are properly installed so that specified testing and balancing can be
        performed.

1.4     SUBMITTALS

  A.    General: Comply with Section 01330.

  B.    Submit qualifications of testing and balancing subcontractor, as required in article
        “Quality Assurance” below.

  C.    Submit certified balance report. In addition to general requirements for submittals, submit
        three copies of final reports and certificates, bound into a booklet.

1.5     QUALITY ASSURANCE

  A.    Testing and balancing subcontractor qualifications:

        1.    Certified by National Environmental Balancing Bureau (NEBB) for air and hydronic
              systems testing and balancing.


Testing, Adjusting, and Balancing                                                          15950 –1
INDEFINITE QUANTITY TERM CONTRACT                                                 REVISED July 03
University of Maryland College Park

        2.    Has successfully completed at least five projects of similar size and scope.
        3.    Not affiliated with any other subcontractor participating in this project. Work
              performed by the subcontractor shall be limited to testing, adjusting, and balancing
              HVAC systems.

  B.    Testing and balancing work shall comply with Procedural Standards for Testing Adjusting
        Balancing of Environmental Systems, published by the National Environmental Balancing
        Bureau.

PART 2 – PRODUCTS

2.1    EQUIPMENT

  A.    Instruments: Approved and properly calibrated.

        1.    Measure pump and coil pressure differentials with mercury manometers.
        2.    Measure air temperature with mercury thermometers.
        3.    Pyrometer surface temperature measurements may be used for piping system
              water temperatures where thermometer wells are not provided in the piping.

PART 3 – EXECUTION

3.1     VERIFICATION OF CONDITIONS

  A.    Before beginning balancing, ascertain that systems are ready. Verify that filters for
        regular service are in place, as required in Section 15861, Filters.

3.2     PREPARATION

  A.    Witness air duct leakage tests required in Section 15810, Ducts, and advise and approve
        the methods and instruments used.

  B.    Using bench-calibrated instruments, field-calibrate pressure gauges and dial-type duct
        thermometers.

3.3    BALANCING OF SYSTEMS, GENERAL

  A.    Tabulate settings of temperature control devices and ascertain that thermostats,
        controllers, and valves are set at specified or approved positions. Verify and certify that
        the sequence of operation for each system is as shown on drawings, specified, or
        approved.

  B.    Provide all labor and devices necessary for the testing and balancing work.

3.4    AIR SYSTEMS BALANCING

  A.    Balance all air distribution, supply, return, exhaust, and outside air systems and
        equipment.

  B.    Test and adjust fans to deliver design airflow at lowest possible speed. Adjust air-
        handling equipment to deliver the required air volumes. Note that air quantities
        scheduled on drawings do not include allowances for duct leakage. Preliminary
        adjustments of fan speed should be slightly in excess of scheduled airflow delivery.
        Make adjustments by adjusting through adjustable sheaves, changing of sheaves and
        associated belts, changing wiring connections of motors, or adjusting speed controller.




Testing, Adjusting, and Balancing                                                            15950 –2
INDEFINITE QUANTITY TERM CONTRACT                                                REVISED July 03
University of Maryland College Park

  C.    Test and adjust system to design airflow requirements.

  D.    Make pitot tube traverse of main supply, return, and outside air ducts to obtain total
        airflow for fan or air-handling unit.

  E.    Adjust rooms or zones to design airflow (supply, return, and exhaust).

  F.    Adjust general HVAC systems to design airflow within the following tolerances:

        1.    Total system supply, return, and exhaust: (0 percent to plus 10 percent).
        2.    Outside air: (minus 5 percent to plus 5 percent).
        3.    Total supply, return, and exhaust for a room or space: (minus 5 percent to plus 5
              percent).
        4.    Grilles, registers, and diffusers:

              a. One per room or space: (minus 5 percent to plus 5 percent).
              b. Two or more per room or space: (minus 10 percent to plus 10 percent).

  G.    Grilles, registers, and diffusers:

        1.    Identify each grille, register, and diffuser as to location and area. List
              manufacturer, type, and size.
        2.    Identify type of testing equipment used.
        3.    Test and adjust each grille, register, and diffuser to design airflow. List (design-
              actual) cfm (cubic meters per minute) and (design-actual) velocity in fpm (meters
              per second) when applicable.
        4.    Adjust diffusers, grilles, and registers to minimize drafts. Adjust blades in supply
              diffuser straightening grids to assure uniform air distribution across diffuser.
        5.    Adjust linear slot diffusers to provide throw direction as indicated on the drawings.
              Unless otherwise noted, discharge pattern shall be horizontal. Where two-way
              throw is indicated, divide the number of slots equally for each direction.

  H.    Test and record the following data, as applicable, for air-handling equipment:

        1.    Manufacturer and model number.
        2.    Total airflow (design-actual).
        3.    Return air airflow (design-actual).
        4.    Outside air airflow (design-actual).
        5.    Total and external static pressure (design-actual). Include static pressure at
              suction, discharge, and between unit coil and filter components.
        6.    Entering air temperatures (db heating, db and wb cooling).
        7.    Leaving air temperatures (db heating, db and wb cooling).
        8.    Motor horsepower (rated-actual).
        9.    Voltage and phase (rated-actual).
        10.   Fan speed, rpm (rated-actual).
        11.   Amperage (rated-actual).

  I.    In cooperation with the control manufacturer’s representative, set adjustments of
        automatically operated dampers to operate as specified.

  J.    Check and adjust all dual duct air terminal boxes for airflow deliveries noted on drawings.

3.5     HYDRONIC SYSTEMS BALANCING

  A.    Balance all hydronic piping systems.




Testing, Adjusting, and Balancing                                                          15950 –3
INDEFINITE QUANTITY TERM CONTRACT                                              REVISED July 03
University of Maryland College Park

  B.    Adjust and balance the following items listed under the various systems in accordance
        with the specified standards.

        1.    Domestic hot water system:
              Pump
              Return piping for flow to every branch
        2.    Chilled water system:
              Pump
              Chilled water coil
        3.    Heating system:
              Pump
              Air-handling unit
        4.    Loop system:
              Pump
              Plate heat exchanger

  C.    After the above items have been adjusted and balanced, submit a certified report listing
        the specification requirements and the operating conditions of these items as follows:

        1.    Pump:
              Flow – gpm
              Suction pressure
              Discharge pressure
              Pressure differential
              Total dynamic head
              Motor – HP voltage, hertz, phase, design full load amps
              Motor – operating line voltage and amperage, overload heater ratings.
        2.    Chilled water coil:
              Flow – gpm
              Entering air – D.B.
              Entering air – W.B.
              Leaving air – D.B.
              Leaving air – W.B.
              Entering water temperature
              Leaving water temperature
              Pressure drop across coil
              Outside air temperature – D.B.
              Outside air temperature – W.B.
        3.    Heating water coil (such as coils in air-handling units, ducts, VAV units, unit
              heaters, convectors, finned tube, and reheat coils):
              Flow – gpm
              Entering water temperature
              Leaving water temperature
              Entering air – D.B.
              Leaving air – D.B.
        4.    Piping system:
              Flow – gpm reading of flow meter in various systems: See drawings for locations.
        5.    Plate heat exchanger:
              Flow – gpm
              Entering water temperature
              Leaving water temperature
              Pressure drop across heat exchanger

3.6     MARKING OF SETTINGS




Testing, Adjusting, and Balancing                                                       15950 –4
INDEFINITE QUANTITY TERM CONTRACT                                              REVISED July 03
University of Maryland College Park

  A.    Following final balance procedures, permanently mark the settings of valves, splitters,
        dampers, and other adjustment devices, so that adjustment can be restored if disturbed
        at any time. Set memory stops on balancing valves. Return and make required
        adjustments after submittal and approval of the Certified Balance Report.


                                       END OF SECTION




Testing, Adjusting, and Balancing                                                      15950 –5

				
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