The area of the triangular section is 66.67m2 and the wetted perimeter of the section is 24.03m. Calculate the value of the manning s roughness co efficient if the bed slope of the channel section is 1 in 500 and the discharge through the channel is 117.61m3 s.

The area of the triangular section is 66.67m2 and the wetted perimeter

1.	The area of the triangular section is 66.67m2 and the wetted perimeter of the section is 24.03m. Calculate the value of the manning s roughness co efficient if the bed slope of the channel section is 1 in 500 and the discharge through the channel is 117.61m3 s.
A.	0.03
B.	0.04
C.	0.05
D.	0.06
Answer» D. 0.06

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The area of the triangular section is 66.67m2 and the wetted perimeter of the section is 24.03m. Calculate the value of the manning s roughness co efficient if the bed slope of the channel section is 1 in 500 and the discharge through the channel is 117.61m3 s.

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