Question

In a rectangular section of width 8.4 m in an irrigation canal carrying a flow of 24 m3/s at depth of 2.8 m, a vertical gate is to be installed. If the flow is to be passed through the 2. gate with a head drop of 0.32 m, under submerged flow conditions, obtain the opening height of the gate. If the U/S section of the canal is rectangular with the same width obtain the slope of the canal if the normal depth of flow is 2.4 m. Use a Manning's roughness of n-0.014 for the canal. Take the gate opening a 0.8 m Obtain the flow in the canal using the equations given by Swamme (hand outs given in the class) 0.072 2- 0.864 abV@h1Sa 0.72 10.7 0.32 0.81h2 Note ho-h2 0.32 m.

Answer 1

Velocy, V tms Nonmal deplh o , n ว0-16 nnz ommal mea, A-B.yn: 8.4×2.11 2 R A. 2016 13-Q 53 m Fnom manning's Equotkon, Q 0.014 Assuming opening of gote a, hen Q 0 a. :. 8(-02)2 2x9.81 20 12 a 0.32 2x9.8 z) Q-53 = a+ 0.416 z) аз-a-53 a2+0.416 : O