(a) A trapezoidal channel is to be designed to convey $50 \mathrm{~m}^{3} / \mathrm{s}$ of water at a velocity of $2 \mathrm{~m} / \mathrm{s}$. The bed width to depth ratio is to be 8 and the side slopes are to be $1 \mathrm{H}: 1 \mathrm{~V}$. It will be lined with a material whose Manning's $n=0.02$. calculate the bed width, depth of flow and slope of the channel. 10
Explanation
The Manning's equation is used to calculate the bed width, depth of flow and slope of the channel. The given parameters are used to calculate the required values.
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