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QUESTION 1 A trapezoidal, concrete lined channel is to be constructed to carry floodwater. The slope...

QUESTION 1

A trapezoidal, concrete lined channel is to be constructed to carry floodwater. The slope of the ground surface is 1 in 500. The design discharge is 10 m3/s. Calculate the dimensions of the trapezoidal channel that will minimize excavation and results in the optimum hydraulic section. (Take Manning’s n = 0.015).

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