June 99
8.4
Provide interior roof drainpipes for all buildings having flat
roofs except exterior gutters and downspouts may be used
as follows:
a. Buildings up to three stories where lowest outside
temperature is 0C (32F) or above.
b. Utility and warehouse buildings.
c. Isolated buildings remotely located from storm
sewerage system.
d. Buildings with pitched roofs.
e. Where additions or alterations are made to buildings
having exterior gutters and downspouts.
f. Unheated buildings.
g. Snow guards shall be provided on pitched roofs of
heated buildings above entrances and foundation plantings
in geographical areas subject to heavy rainfall.
SHOP COMPRESSED AIR SYSTEM: Provide simplex air
9.
compressor to serve maintenance equipment, a minimum of one
outlet on each interior wall of maintenance bay and workshop, and
a minimum of one exterior outlet on overhead door wall. Interior
outlets shall be no farther apart than 7.6 m (25 feet).
10.
RISER DIAGRAMS:
10.1
Riser diagrams are required for the following systems
installed within the buildings: Soil, waste and vent; cold
water; hot water; fuel gas; storm water systems.
10.2
Riser diagrams may be shown flat or in isometric
projection. Diagrams include story heights, size of all
horizontal and vertical piping, fixture numbers being served,
and means of connection between fixtures and the stacks
and mains. Each system shall be complete and
continuous.
11.
WATER SOFTENING SYSTEM:
11.1
Softeners: Design simplex vertical, pressure type, sodium
cycle water softeners to comply with the following and
Master Specification 15455. Regeneration shall occur no
more than once per day. Provide hardwater bypass.
11.2
Provide softening equipment when total hardness exceeds
170 mg/L [parts per million (ppm)] as CaCO3. Blend
equipment effluent to a hardness of approximately 50 mg/L
(ppm). Do not treat irrigation water.
VA Design Guide -- National Cemetery Administration
Page 5 -80
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