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Problem 12.53 13 of 13 II Review The channel made of unfinished concrete. (Figure 1) Part A Determine the required slope if t

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Sol:) Given data in the question Flow in the channel (8)=220 ft/sec Depth of flow in the channel (y) = 6ft Mannings Constant(Area of flow is in trapezoidal shape, therefore we used formula of brapezoidal area) Velocity (V) = 2 220 84 2.62 ft/sec А .Velocity (V) - 1 ) 3(3)3 n 2.62= / 004 (3-367373 (50)/2 So = 0.000267 3745 ,. So = 1: 3745 ok I in 3745 1 ..so X 100 3745 SoRequired slope for given channel is 0.0267%

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