2.11
DRAIN TRENCH LINER/GRATING
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NOTE: Designer will indicate on the drawings,
required dimensions, details, and coordinate with
floor plan layout. Drain trench liner/grating
system must be provided with a complete drainage
system. Trench must be capable of being readily
cleaned out without the removal of bolts or screws
to gain access.
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Drain trench liner/grating shall be of 1.9 mm (14 gauge) 14 gauge stainless
steel in sizes as indicated with a 25 mm 1 inch wide perimeter shoulder at
the top, turned up flush and level with finished floor, tight-hemmed back
down to the shoulder level and flanged out 50 mm 2 inches for attachment to
the slab.
2.11.1
Interior of the Liner
Interior of the liner shall be 150 mm 6 inches deep with corners coved on
19 mm 3/4 inch radius; sloped and scored 25 mm 1 inch to an integrally
welded box pattern drain (drain housing only). Drains shall be at 1200 mm
48 inches on center maximum and shall be fitted with 150 mm 6 inch long
welded tailpiece. A safety chain shall be connected to the basket strainer
assembly and the top of the liner wall. Underside of sloping portion of
liner shall have 50 mm 2 inch long "zee" clips.
2.11.2
Aluminum Grating
Aluminum grating shall be removable, without the use of tools, with 38 by 5
mm 1-1/2 by 3/16-inch bearing bars and a perimeter frame. Close bearing
bars shall have a 33 by 100 mm 1-5/16 by 4 inch centerline to centerline
grid. Section quantities and sizes shall be as indicated on the drawings
with a maximum of 600 mm 24 inches long sections.
2.12
UTILITY DISTRIBUTION SYSTEMS
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NOTE: Designer will indicate arrangement, size,
details, and connection schedules of utility
distribution system on the drawings.
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Utility distribution systems shall be UL listed and conform to NFPA 70.
Systems shall be prewired and preplumbed to one final connection point.
Systems shall include an electrical distribution assembly and a mechanical
manifold assembly as indicated. Systems shall be provided with removable
1.6 mm (16 gauge) 16 gauge stainless steel panels for ease of access.
Systems shall be provided with floor mounting pedestals with vertical
extensions for overhead service connections.
2.12.1
Electrical Distribution Assembly
The internal electrical main feeder shall be copper [busbar] [cable bus]
with the equipment ground connected to a grounding stud. Electrical
assembly shall be prewired with easily removable and resettable stainless
steel connection plates housing receptacle and circuit breaker. Each
SECTION 11400A
Page 36
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