A trapezoidal channel has a bottom width of 3.25 m and sides with a slope of...

A trapezoidal channel has a bottom width of 3.25 m and sides with a slope of 1 vertical

to 1.5 horizontal. The slope of the bed is 1 in 2000 and the depth of water is 1.2 m.
a) Using the Manning Formula with n = 0.025, calculate the velocity and

the discharge rate of the flow.

b) Calculate the Chezy number for the channel and use that to re- calculate the velocity and the discharge rate of the flow.
c) If the channel had a Chezy number of 42 state the effect on the velocity and discharge and explain why this would occur.

Expert Solution

chezys constant represents the smoothness of channel.when chezys constant increased to 42 the discharge and velocity also increased.More smooth the channel more will be the value of velocity and discharge.

Ally Wells answered 11 months ago

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