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3. A trapezoidal channel has a base width b = 8 ft and side slopes 6H:1V....

3. A trapezoidal channel has a base width b = 8 ft and side slopes 6H:1V. The frictional slope is Sf = 0.035 and the Manning roughness coefficient is n = 0.014. Design a channel if channel discharge is = 15.45 m3 /s using Mannings equation. The farmer land is 3.482 acre with a length of 951.43 ft. what is the best length for the grass waterway?

Depth of channel, d=? (5).  

Top width of the channel=? (3)

Freeboard of the channel=? (3)

Total depth of the channel, D=?

(3) Also, determine the state of flow. (3)

strip length?

strip width

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