What will be the carrying capacity of a horizontal rectangular channel 4 m wide, conveying a discharge of 1 cumecs per meter width of channel?

What will be the carrying capacity of a horizontal rectangular channel 4 m wide, conveying a discharge of 1 cumec per meter width of channel?

Right Answer is:

4.000 m3/s

SOLUTION

Given:

Rectangular channel of width (B) = 4 m
Discharge (q) = 1 m3/s

For critical flow in rectangular channel:

$q = \frac{Q}{B}$

Carrying capacity of a horizontal rectangular channel

Discharge, Q = qB = 1 × 4 = 4 m3/s

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