*TM 5-813-1/AFM-88-10, Vol. 1
CHAPTER 1
GENERAL
Distribution system.
A system of
(5)
1-1. Purpose
pipes and appurtenances by which water is provided for
This manual provides guidance for selecting water
domestic and industrial use and firefighting.
sources, in determining water requirements for Army and
Feeder mains. The principal pipelines
(6)
Air Force installations including special projects, and for
of a distribution system.
developing suitable sources of supply from ground or
Distribution mains. The pipelines that
(7)
surface sources.
constitute the distribution system.
Service line. The pipeline extending
(8)
1-2. Scope
from the distribution main to building served.
This manual is applicable in selection of all water
Effective population. This includes
(9)
sources and in planning or performing construction of
resident military and civilian personnel and dependents
supply systems. Other manuals in this series are:
plus an allowance for nonresident personnel, derived as
TM 5-813-3/AFM 88-10, Vol. 3--Water Treatment
follows: The design allowance for nonresidents is 50
TM 5-813-4/AFM 88-10, Vol. 4- Water Storage
gal/person/day whereas that for residents is 150
TM 58135/AFM 88-10, Vol. 5--Water Distribution
gal/person/day.
Therefore, an "effective-population"
TM 5-813-6/AFM 88-10, Chap. 6-Water Supply for
value can be obtained by adding one-third of the
Fire Protection
population figure for nonresidents to the figure for
TM 5813-7/AFM 88-10, Vol. 7-Water Supply for
residents.
Special Projects
Nonresident Population
TB MED-229-Sanitary Control and Surveillance of
Effective Population =
Water Supplies at Fixed and Field
3
Installations
+ Resident Population
AFR 161 11 Management of the Drinking Water
(10) Capacity factor. The multiplier which
Surveillance Program
is applied to the effective population figure to provide an
allowance for reasonable population increase, variations
1-3.
Definitions
in water demand, uncertainties as to actual water
a.
General definitions.
The following
requirements, and for unusual peak demands whose
definitions, relating to all water supplies, are established.
magnitude cannot be accurately estimated in advance.
Water works.
All construction
(1)
The Capacity Factor varies inversely with the magnitude
(structures, pipe, equipment) required for the collection,
of the population in the water service area.
transportation, pumping, treatment, storage and
(11) Design population. The population
distribution of water.
figure obtained by multiplying the effective-population
Supply works.
Dams, impounding
(2)
figure by the appropriate capacity factor.
reservoirs, intake structures, pumping stations, wells and
Design Population
=
[Effective Population]
all other construction required for the development of a
x
[Capacity Factor]
water supply source.
(12) Required daily demand. The total
Supply line. The pipeline from the
(3)
daily water requirement.
Its value is obtained by
supply source to the treatment works or distribution
multiplying the design population by the appropriate per
system.
capita domestic water allowance and adding to this
Treatment works. All basins, filters,
(4)
quantity any special industrial, aircraft-wash, irrigation,
buildings and equipment for the conditioning of water to
air-conditioning, or other demands. Other demands
render it acceptable for a specific use.
include the amount necessary to replenish in 48 hours
the storage required for fire protection and normal
1-1
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