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Complete Compiled Specification.pdf - Peck Ormsby Construction

Complete Compiled Specification.pdf - Peck Ormsby Construction

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lugs, and self-contained, pressure-responsive gaskets. Housing shall be ASTM A-536 ductile cast iron or ASTM<br />

A-47 malleable iron, hot dip galvanized or zinc electroplated. Coupling housing shall be painted with an alkyd<br />

enamel paint.<br />

All mechanical grooved couplings shall be of the same manufacturer. Either flexible or rigid type to be used as<br />

required.<br />

Approved Manufacturers: Victaulic, Grinnell, or Central.<br />

PIPE GRADING:<br />

Piping shall be uniformly graded in direction of flow as noted below:<br />

PIPING FALL/RISE DIRECTION PER/RUN<br />

Rainwater 1" Down 8'<br />

Waste 4" & Smaller 1" Down 4'<br />

Vent 1" Up 4'<br />

Water 1" Up 40'<br />

Condensate Drip 1" Down 4'<br />

Heating Hot Water/<br />

Glycol<br />

Chilled Water/<br />

Glycol<br />

1"<br />

Up 40'<br />

1" Up 40'<br />

Refrigerant 1" Down 40'<br />

Natural Gas 1" Down 40'<br />

EQUIPMENT BASES:<br />

All pumps, compressors and other equipment shown on the plans shall be set on 4" high concrete housekeeping<br />

pads. The pads shall be furnished by the mechanical contractor.<br />

Roof curbs shall provide a free height from the roof membrane to the top of the curb of at least 12". All roof<br />

curbs and platforms, whether field built -or- factory furnished, shall have a wood nailer strip around the top<br />

perimeter for securing the roof membrane and attaching roof flashings.<br />

VIBRATION ISOLATION:<br />

All mechanical equipment over 5 H.P. shall be isolated in accordance with the latest edition of the ASHRAE<br />

Handbook.<br />

______________________________________________________________________________________<br />

SEGO LILY ELEMENTARY SCHOOL CLASSROOM ADDTION March 2, 2009<br />

BASIC MATERIALS & METHODS 15050-6

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