... given as an illustration of the effect of reducing waste and leakage. "Again, if one-half of the water pumped is wasted or leaks away, the pumps have to force into the mains twice as much water as is otherwise necessary, and this means a velocity...
Report on the water supply system of Chicago: its past, present and future ... - Page 60
by John Ernst Ericson - 1905 - 68 pages
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