The unfinished concrete channel is intended to have a downward slope of 0.002 and sloping sides at 60°

Question

Question

The unfinished concrete channel is intended to have a downward slope of 0.002 and sloping sides at 60° (Figure 1)

Part A

If the flow is estimated to be 180 m³/s, determine the base dimension b of the channel bottom.

engineering Civil-Engineering

Answer 1

Answer #1

For unfinished concrete channel the value of manning's constant is 0.013

for discharge through trapezoidal channel-

For 60 degree slope

By trial and error we get value of b-

Answer 2

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