An unsymmetrical trapezoidal channel with one side inclined from vertical by 35o and
the other inclined from horizontal by 40o is to be designed to carry a 2.5 cubic meters
per second discharge. Determine the dimensions of the channel for most efficient
section if roughness coefficient is 0.025 and average longitudinal slope is 0.05. Draw
the cross section of the open channel considering the freeboard height. Use Chezy
and Kutter’s C formula.