May 25 Daily Question: Flow to a Parallel Pipe System Based on Head Loss

NCEES Civil PE Specification V.F.: Pressure conduit


Problem

The parallel pipe system shown has a head loss due to friction of 5 feet. Given the pipe parameters shown, and a Darcy-Weisbach friction factor of 0.018 for both pipes, determine the total input flow Q in cubic feet per second.

Assume minor losses are negligible.
 

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