TYPICAL DESIGN EXAMPLES
The following typical design examples illustrate procedures to be followed in the determination of total
capacity requirements for water storage facilities at Army or Air Force installations.
a. Effective population.
b. Water source. Wells on post; average yield 150 gal/rein each.
c. Treatment. Chlorination.
e. Well requirements.
Total well yield: Assuming 24-hour/day well operation, one well has sufficient yield to meet the required
daily demand rate of 130 gal/rein. However, for firm production capability, it is necessary to have two
wells, each capable of 130 gal/rein.
Minimum pump requirement: The dependable output of the source of Supply, i.e. the two wells, must be
equal to, or greater than, the required daily demand. `l?hus, each well Should be equipped with a 150-gal/
pump. Two reliable sources of electric service should be provided, or one pump should be equipped with
both an electric motor and standby internal combustion engine. The size and number of distribution
pumps required are related to the type, size, and location of storage facilities. Provisions of elevated stor-
age will reduce the required pump capacity.
f. Storage requirement.