Complete Compiled Specification.pdf - Peck Ormsby Construction

MINIMUM PIPE INSULATION
INSULATION THICKNESS IN INCHES FOR PIPE SIZES**
PIPING SYSTEM
TYPES
FLUID
TEMP.
RANGE, F
RUN-
OUTS
2"*
1" &
LESS
1-1/4"
TO 2"
2-1/2"
TO 4"
5" TO 6" 8" +
HOT SURFACE SYSTEMS
Low Press/Temp. 201-250 1 1-1/2 1-1/2 2 2 2
Low Temp. 120-200 1/2 1 1 1-1/2 1-1/2 1-1/2
COOLING SYSTEMS
Chilled Water 40-45 1 1 1-1/2 1-1/2 1-1/2 1-1/2
Domestic Cold Water 40-55 1 1 1 1 1 1
Refrig. or brine Below 40 1 1 1-1/2 1-1/2 1-1/2 1-1/2
* Runouts not exceeding 12 feet in length to individual terminal units.
** For piping exposed to outdoor air, increase thickness by 1/2".
Pipe insulation shall be covered with an all-service jacket.
WATER & WASTE PIPING EXPOSED BELOW ALL LAVATORIES AND SINKS:
Insulate all exposed surfaces with an approved ADA insulation kit as required by sink manufacturer.
ROOF DRAIN PIPING:
Roof drain receivers and roof drain piping (both primary and secondary) except in masonry wall and
where buried in the ground, shall be insulated as specified for domestic cold water. Insulation thickness
shall be 1". Provide white PVC insulation cover for all roof drain piping that runs exposed in occupied
areas.
REFRIGERANT SUCTION PIPING:
Refrigerant suction piping shall be insulated with 1/2" thick closed cell flexible foam. Finish exterior
insulation with two heavy coats of UV resistant gray sealer.
CHILLED WATER PUMPS:
Insulate with removable and replaceable covers consisting of No. 20 gauge galvanized sheet metal jacket lined
with 2" thick high density polystyrene insulation. The insulation shall have an average "K" factor or .22. All voids
between insulation and pump housing shall be filled insulation. Closure joints of metal casing shall be
vapor-sealed after the covers are in place.
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SEGO LILY ELEMENTARY SCHOOL CLASSROOM ADDITION March 2, 2009
INSULATION 15180-2