Project Name
Project Number
UEPH Complex
Statement of Work
26 November 2001
expansion joints and offsets shall provide with adequate anchors and guides where required to
prevent excessive forces within the piping systems. All piping shall be properly and adequately
supported. Pipe supports shall conform to MSS SP-58 and MSS SP-69.
10-12.1
Chilled water. Shall be steel piping conforming to ASTM A 53/A 53M, Grade A or B,
black steel, schedule 40 or copper tubing conforming to ASTM B 88, ASTM B 88M, Type K or L.
10-12.2
Hot water. Shall be steel piping conforming to ASTM A 53/A 53M, Type E or S,
Grade A or B, black steel, schedule 40 or copper tubing conforming to ASTM B 88, ASTM B
88M, Type K or L.
10-12.3
Refrigerant. Copper tubing shall conform to ASTM B 280 annealed or hard drawn as
required. Copper tubing shall be soft annealed where bending is required and hard drawn
where no bending is required. Soft annealed copper tubing shall not be used in sizes larger
than 35 mm [1-3/8 inches]. Refrigerant piping, valves, fittings, and accessories shall conform to
the requirements of ASHRAE 15.
10-12.4
Steam. Shall be steel piping conforming to ASTM A 53/A 53 M, Type E or S, Grade
A, black steel, schedule 40.
10-12.5
Steam condensate. Shall be steel piping conforming to ASTM A 53/A 53 M, Type E
or S, Grade A, black steel, schedule 80.
10-12.6
Condensate drain. Shall be copper tubing or PVC pipe.
10-13
INSULATION. Pipe and duct insulation shall be in accordance with ASHRAE 90.1.
Equipment insulation shall be a minimum of 50 mm [2 inch] thickness or as necessary to
prevent the surface temperature from exceeding 60 degrees C [140 degrees F].
10-13.1
Duct insulation. Provide on the exterior of all supply and outside air ducts and
plenums and on all return ducts in unconditioned spaces. Exhaust ductwork does not require
insulation. Insulation shall be faced with a vapor barrier material having a performance rating
not to exceed 1.0 perm. Insulation, vapor barrier, and closure systems shall be
non-combustible as defined in NFPA 255, with a flame-spread rating of not more than 25, and a
smoke development rating of not more than 50, as defined in ASTM E-84. Where insulated
ducts pass through fire walls, fire partitions, above grade floors, and fire rated chase walls, the
penetration shall be sealed with fire stopping materials.
10-13.2
Pipe. Provide on all aboveground hot and cold piping systems except PVC
condensate drains. Insulation shall form a continuous thermal retarder and shall have a vapor
retardant to prevent condensation on cold piping systems. Installation shall be with full length
units of insulation and using a single cut piece to complete a run. Cut pieces or scraps abutting
each other shall not be used. Supply the insulation with manufacturers recommended factory
applied jacket except for flexible cellular. Piping exposed to weather shall be insulated and an
aluminum jacket or PVC jacket shall be applied. Where insulated pipes pass through fire walls,
fire partitions, above grade floors, and fire rated chase walls, the penetration shall be sealed
with fire stopping materials.
SOW-143
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