An irrigation channel is to carry a discharge of 14 cumec with a velocity of 0.9 m/s and bed
slope of 1 in 2500. The side slopes are 1 to 1. Find the depth and bottom width. The values of Chezy’s C for this
channel for different values of hydraulic radius R are as tabulated below.
| Hydraulic radius | 0.7 | 0.8 | 0.9 | 1.0 | 1.1 | 1.2 | 1.3 | 1.4 |
| Chezy’s C | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 |
(solved), A channel carries a discharge of 5 cumec with a flow depth 1 m. The side slopes are 1 to 1 and bed slope 1 in 3520. Find the bed width and the velocity. The values of Chezy’s C for this channel for different values of hydraulic radius R are as tabulated below
(solved), A channel is 2m wide at bottom; the length of each sloping side is 1.95 m; the width at water surface is 5.5 m the flow depth 1.2 m; and bed slope 1 in 5280. What is the discharge per minute? The values of Chezy’s C for this channel for different values of hydraulic radius R are as tabulated below.
(solved), A most efficient trapezoidal section is required to give a maximum discharge of 21.5 m3/s of water. The slope of the channel bottom is 1 in 2500. Taking C = 70 m1/2/s in Chezy’s equation, determine the dimensions of the channel. Also determine the value of Manning’s n, taking the value of velocity of flow as obtained for the channel by Chezy’s equation
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