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2. (a)   A channel has a triangular cross section with equal sides, a bed slope of...

2. (a)   A channel has a triangular cross section with equal sides, a bed slope of 1 in 5000 and a Mannings, n, 0.025. When the flow is 50 cfs. Determine the normal depth of the channel.      

     (b) Determine the optimum dimensions (B, L, y, b) for the trapezoidal channel , if the flow rate in the channel is 0.55m3/s, the channel slope is 1:2500 and the Chezy coefficient is 85 m1/2 s-1.

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