Project Name
Project Number
TEMF
Statement of Work
UFC 4-214-02, 24 Jul 03
required. Individual shutoff valves shall be provided on compressed air lines to each branch line
and at individual outlets or points of use. Fittings and valves shall be compatible for the piping
systems in which installed.
8-5.1
Gas. The design and installation of natural gas distribution systems and equipment
shall be in conformance with manufacturer's recommendations and applicable sections of
ASME B31.8 and NFPA 54. The installation of interior natural gas distribution systems shall be
in conformance with the provisions of NFPA 54. The use of semi-rigid tubing and flexible
connectors for gas equipment and appliances is prohibited, except that the final connections to
the movable gas burning equipment shall be made using flexible connectors conforming to
ANSI Z21.45, Flexible Connectors of Other Than All Metal Construction for Gas Appliances, not
less than 1000 mm long. Provide accessible gas shutoff valve and coupling for each gas
equipment item. Comply with UBC or model code seismic requirements. Exposed horizontal
piping shall not be installed farther than 150 mm from the nearest parallel wall in laundry areas
or areas where clothes hanging could be attempted.
8-5.2
Domestic water piping. Piping and fittings shall be copper tubing or chlorinated
polyvinyl chloride (CPVC) plastic pipe. Valves shall be provided at each fixture and piece of
equipment, at each toilet and kitchen, and on takeoffs from risers to each floor. Under slab
supply piping shall be limited to service entrance only.
8-5.2.1
Copper tubing. Water piping under concrete slabs shall be copper tubing, type K,
annealed. Joints under the slabs are prohibited. If copper tubing is selected for interior water
piping, it shall be type K, L, or M hard-drawn copper. Type M copper tubing shall not be
installed in exposed areas where the tubing may be exposed to external damage. Additional
consideration in the technical evaluation shall be given to designs using copper types K or L.
Fittings for soft copper tubing shall conform to ANSI B16.26, Cast Copper Alloy Fittings for
Flared Copper Tubes, and for hard-drawn to ANSI B16.22, Wrought Copper and Copper alloy
Solder Joint Pressure Fittings.
8-5.2.2
Chlorinated Polyvinyl Chloride (CPVC) Plastic Pipe. [Determine the acceptability of
CPVC and edit text as required.] If plastic pipe is selected for interior water piping, it shall be
Chlorinated Polyvinyl Chloride (CPVC) plastic pipe, conforming to ASTM D-2846, Standard
Specification for Chlorinated Poly(Vinyl Chloride) (CPVC) Hot- and Cold-Water Distribution
Systems. CPVC thicknesses shall meet Standard Design Ratio 11 for sizes 13 mm to 51 mm
and shall be schedule 80 pipe for sizes larger than 51 mm.
8-5.3
Soil, waste, vent, and drain. Piping and fittings shall be cast iron, copper or polyvinyl
chloride (PVC) plastic pipe. Cleanouts shall be provided as required by the code.
8-5.4
Repair bay floor drainage system. A continuous concrete trench drain shall be
located along the exterior wall to collect drainage from repair bays. Piping shall discharge
through an oil water separator on the exterior of the building prior to entering the sanitary sewer.
8-5.4.1
Trench. The trench shall be a minimum of 305 mm wide and shall have a
continuous open grate top. Provide a solid cover at all doorways and in the welding shop and
the generator shop.
8-5.4.2
Piping. Piping and fittings shall be same as for drain piping. A basket strainer shall
be provided in the discharge piping from the trench. Adequate cleanouts shall be provided in the
floor drainage system.
SOW-78
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