## chapter 6 design of irrigation channel1

Example 1 Design an irrigation channel in a non-erodible material to carry a discharge of 15cumecs when the maximum permissible velocity is 0.8m/s. Assume the bed slope of 1 in 4000, side slope= 1:1 and Manning's n=0.025. Given Q=15m3/s V=0.8m/s S=1 in 4000 SS=1:1 n= 0.025 Solution Step 1: Determine the cross-sectional area, A 18.75 2 0.8 15 ...