TM 513-7/AFM 8810, Vol. 7
CHAPTER 2
WATER SUPPLY
b. Family housing at tactical sites, air control and
2-1. Water sources
warning stations. Storage capacity as determined by
Available public or private water supply systems will be
criteria in TM 58134/AFM 88-10, Vol. 4 will be provided
used as sources of water supply wherever feasible. In
for the fire protection.
the absence of such a source, adequate water source
and supply facilities will be constructed in accordance
with criteria established in TM 5-813-1/ AFM 88-10, Vol.
2-4. Pumping stations for fire protection water
1. If no adequate source of water is economically
supply
available at the site, domestic use water may be hauled
All pump installations to be used in fire protection service
in.
will meet the requirements of MILHDBK 1008, TM 5-812-
1, AFM 8810, Chap. 6, and NFPA 20.
2-2. Water treatment
Usually only chlorination will be required. If other
2-5. Residual pressure
treatment is found necessary, it will be provided in
The residual pressure for domestic demands will be as
accordance with criteria in TM 5813-3/AFM 88-10, Vol.
required in paragraphs 1-4a, 1-4b and 1-4c. The
3.
Water treatment units will not be provided in
residual pressure for the fire protection water supply will
duplicate. However, more than one unit may be provided
be 90 psi when hose streams are to be taken directly
where necessary to produce the required daily demands.
from fire hydrants without the use of a fire department
Such cases will be limited to electrodialysis, zeolite-type
pumper. When a fire department pumper is to be used,
softeners, and ion exchange units except when used in
the minimum residual pressure will be 10 psi.
the two-step demineralization process. An exception to
the above policy of not providing duplicate water
2-6. Water distribution systems
treatment facilities will be made where the sole source of
Water distribution systems will be designed in
water is obtained by the conversion of sea water. In this
accordance with criteria in TM 5-8135/AFM 88-10, Vol.
event sufficient salt water treatment units for producing
5. Pipe sizes will be based on domestic flow at air
potable water will be provided so that the required daily
defense tactical sites, and on combined domestic and
domestic water demand can be maintained when one or
fire flow requirements at all other sites.
more units are out of service for maintenance or repair.
2-7. Fire hydrants
2-3. Water storage
a. Fire hydrants will be installed in accordance with
Water storage may be required for fire protection
the criteria in TM 58135/AFM 8810, Vol. 5.
purposes. Ground storage will be provided unless it is
b. Fire hydrants serving family housing at tactical
determined by the using service that elevated storage
sites will be located so that no family unit entrance is
will not interfere with the operation of technical
more than 200 feet from a fire hydrant.
equipment.
c. Where local fire departments are not readily
a. Air defense tactical sites. Where peak domestic
available, each fire hydrant will be provided with a fire
demand at adequate pressure is not available, a
hose house in accordance with the requirements of
pneumatic pressure system supplemented by a ground
NFPA 24. Each hose house will be equipped with 300
storage tank with a minimum gross capacity of 3,500
feet of 1-1/2 inch approved fire hose and adjustable
gallons, pumping equipment, and appurtenances as
nozzle capable of producing either a water spray or a
required by site conditions will be installed. An elevated
straight-stream pattern in addition to the equipment
storage tank, if economically justified, may be installed in
required by NFPA 24. Where the fire protection water
lieu of a pressure system. The capacity of the pneumatic
supply is provided by a ground storage reservoir and a
pressure tank will be not less than the discharge from the
fire pump, the fire pump will be arranged to start upon a
pump in 3 minutes (TM 5810-5/AFM 88-8, Chap. 4).
drop in pressure below the minimum pressure which
The capacity of the storage tank will be at least equal to
would exist in maximum domestic water demand.
the water requirement for 1 day.
2-1
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