Nominal Pipe
Maximum
Size (inches)
Spacing (feet)
4
14
5
15
6
16
2.2.4
Pipe Sleeves
Provide where piping passes through masonry or concrete walls, floors,
roofs and partitions. Sleeves in outside walls below and above grade, in
floor, and in roof slabs, shall be standard weight zinc coated steel pipe.
Sleeves in partitions shall be zinc coated sheet steel having a nominal
weight of not less than 4.40 kg per sq meters 0.90 pounds per square foot.
Space between piping and the sleeve, shall be not less than 13 mm 0.5 inch.
Sleeves shall be of sufficient length to pass through the entire thickness
of walls, partitions and slabs. Extend sleeves in floor slabs 50 mm 2
inches above the finished floor. Pack space between the pipe and sleeve
with asbestos free insulation and calk at both ends of the sleeve with
plastic waterproof cement.
2.2.5
Escutcheon Plates
Provide piping passing through floors, walls and ceilings with one piece or
split type plates. Plates where pipe passes through finished ceilings
with aluminum paint finish. Securely anchor plates in place.
2.2.6
Discharge Nozzles
Fabricated of corrosion resistant materials. All nozzles shall be designed
so that the orifice piece is connected directly to the supply pipe. The
size of pipe and nozzles shall be determined from the calculated flow and
terminal pressures in accordance with established, recognized test data
contained in the manufacturer's listed design manual.
2.2.7
Storage Cylinders
Constructed of high strength alloy steel, conforming to all applicable
specifications of the Department of Transportation. Container design shall
permit on-site reconditioning and refilling when required. Safety valves,
manifolds, pressure gauges, and pressure switches shall be provided.
2.2.8
Jointing Compound
Tape conforming to FS A-A-58092.
2.3
CONTROL PANEL
Provide complete electrical supervision of all circuits. Install modular
type panel in a [flush] [surface] mounted steel cabinet with hinged door
and cylinder lock. Switches and other controls shall not be accessible
without the use of a key. The control panel shall be a neat, compact,
factory-wired assembly containing all parts and equipment required to
provide specified operating and supervisory functions of the system. Panel
cabinet shall be finished on the inside and outside with factory-applied
enamel finish. [Provide separate alarm and trouble lamps located on the
exterior of the cabinet door or visible through the cabinet door for each
zone initiating circuit.] Provide prominent rigid plastic or metal
SECTION 13966N
Page 14
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