(a) Water is flowing at normal depth in a 10 m wide trapezoidal channel with a bed slope of 1:3000. The side slopes of t

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A Water Is Flowing At Normal Depth In A 10 M Wide Trapezoidal Channel With A Bed Slope Of 1 3000 The Side Slopes Of T 1 (47.76 KiB) Viewed 62 times

(a) Water is flowing at normal depth in a 10 m wide trapezoidal channel with a bed slope of 1:3000. The side slopes of the channel are 1H:2V. The channel boundary is made of concrete with Manning's roughness coefficient as 0.012. If the flow rate is 10 m/s, calculate the height of a hump in the channel that would produce critical conditions without a rise in the upstream water level. (b) Comment on the upstream water depth in the channel Q3(a), if the provided hump height is more than the value calculated above. (c) Compute the depth of flow (h) in the composite channel section (symmetrical) shown in Figure Q3 when it carries a discharge of 50 m/s. The bed slope of channel is 1 in 2500, and channel boundary is made of glazed brick 1 3m- 3m 1m Benching Figure Q3