Issue 23 and Volume 66.

PUMPING THROUGH PIPE LINES* Table of Cost of Delivering Water at Uniform Rates of Flow through Various Sizes of Pipe Line Varying Conditions—Increased Future Demands Must be Considered MANY municipalities secure water for a public supply some distance from the municipality. In a few places water flows from the source to the municipality by gravity, but in nearly all installations in this state it is necessary to pump through a pipe line. Water may be delivered directly to consumers or to a reservoir from which it is pumped or flows by gravity to consumers. The choice of a proper-sized pipe line is of considerable importance. Where reservoir capacity is not provided, pump and pipe line capacity should be sufficient to meet maximum demands. Occasionally high demand may be met in some installations by increasing pressure to correspond to increased friction losses in pipe line; or, if water at low pressure…

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