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Question 15.16: A highway drainage ditch is to carry 10 ft³/s of water in a ...

A highway drainage ditch is to carry 10 ft3/s of water in a finished concrete channel during the worst expected rainstorm. If the slope is SB = 0.001, find the dimensions of the optimum rectangular channel and compare with those of an optimum circular channel. Assume uniform flow and that the water fills each channel to the brim at peak flow.

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