a.
Sleeves in Masonry and Concrete: Provide hot-dipped galvanized
steel, ductile-iron, or cast iron sleeves at walls, ceilings,
roofs, and floors. Core-drilling of masonry and concrete may be
provided in lieu of sleeves provided that cavities in the
core-drilled holes are completely grouted smooth.
b.
Sleeves in Other Than Masonry and Concrete:
Provide 26 gage
galvanized steel sheets.
2.4.3
Pipe Hangers and Supports
Provide MSS SP-58 and MSS SP-69, Type 1, with adjustable type support rods,
except as specified or indicated otherwise. Attach to steel joists with
Type 19 or 23 clamps and retaining straps. Attach to steel W or S beams
with Type 21, 28, 29, or 30 clamps. Attach to steel angles and vertical
web steel channels with Type 20 clamp with beam clamp channel adapter.
Attach to horizontal web steel channel and wood with drilled hole on
centerline and double nut and washer. Attach to concrete with Type 18
insert or drilled expansion anchor.
2.5
PRESSURE RELIEF DEVICE
Provide each system with an approved device designed to operate between
16.50 and 20.70 MPa (gage) 2400 and 3000 psig. Locate the device between
the storage cylinder manifolds and normally closed valves.
2.6
SYSTEM CONTROL
Provide apparatus, accessories, components, and associated materials
specified or required. Provide [automatic] [and] [manual] [combination]
[electric] [and] [pneumatic] [mechanical pull cable] type of actuating
stations complete and ready for operation. For electrically actuated
systems, provide main and reserve switch. Switch will select between main
and reserve carbon dioxide supplies, located adjacent to the cylinder bank
or at the control panel. [Detection system shall be complete Class A
electrically supervised, combination, automatic, and manual. Automatic
automation shall be accomplished by [smoke] [and] [heat] detectors.]
2.6.1
Manual Control Station for Underfloor Total Flooding System
**************************************************************************
NOTE: Omit if total flooding system for underfloor
areas is not to be provided.
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[Provide stations [at the principal exits from each protected space]
[_____].] For systems that are mechanically or pneumatically activated,
provide a separate station for main supply and for reserve supply of carbon
dioxide at each location. For electrically activated systems, provide one
station at each location. Mark each station to indicate its function.
2.6.2
Sequence of Operation
Smoke detection system shall be [cross-zoned,] [priority matrix,] [or have
common circuit individual detector verification capability]. [If a
cross-zoned system is used, each protected area shall contain two smoke
detection circuits (zones), with each circuit having an equal number of
detectors connected thereto and no two adjacent detectors connected to the
same zone.] Upon activation of any smoke detector, the system shall
SECTION 13961N
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