After the seal assembly is properly positioned in the sleeve,
tightening of the bolt shall cause the rubber sealing elements to
expand and provide a watertight seal between the pipe/conduit and
the sleeve. Each seal assembly shall be sized as recommended by
the manufacturer to fit the pipe/conduit and sleeve involved. The
Contractor electing to use the modular mechanical type seals shall
provide sleeves of the proper diameter.
3.1.3.4
Fire-Rated Penetrations
Penetration of fire-rated walls, partitions, and floors shall be sealed as
specified in Section 07840 FIRESTOPPING.
3.1.3.5
Escutcheons
Finished surfaces where exposed piping, bare or insulated, pass through
floors, walls, or ceilings, except in boiler, utility, or equipment rooms,
shall be provided with escutcheons. Where sleeves project slightly from
floors, special deep-type escutcheons shall be used. Escutcheon shall be
secured to pipe or pipe covering.
3.1.4
Access Panels
Access panels shall be provided for concealed valves, vents, controls, and
items requiring inspection or maintenance. Access panels shall be of
sufficient size and located so that the concealed items may be serviced and
maintained or completely removed and replaced. Access panels shall be as
specified in Section 05500A MISCELLANEOUS METAL.
3.1.5
Refrigeration Piping
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NOTE: For the design of a refrigerant piping system
a designer has basically two options:
1) Perform the design of the entire system
including pipe sizes and layout/slopes based on
guidance from ASHRAE. On the drawings indicate that
it will be the Contractor's responsibility to
coordinate the pipe sizes and layout/slopes with the
equipment and piping configurations to be provided.
2) For small systems (systems with 1 or 2
compressors and 1 or 2 coolers; 1 compressor for
each cooler), the designer may elect to show only
the individual components and their relative layout
or schematic with no pipe sizes or slopes. For
these types of systems, it will be the Contractor's
responsibility to submit shop drawings and
calculations to completely define the entire system
based on the equipment to be provided.
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Unless otherwise specified, pipe and fittings installation shall conform to
the requirements of ASME B31.5. Pipe shall be cut accurately to the
measurements established at the jobsite and worked into place without
springing or forcing. Cutting or otherwise weakening of the building
structure to facilitate piping installation will not be permitted without
written approval. Pipes shall be cut square, shall have burrs removed by
SECTION 15652A
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