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CIVIL ENGINEERING HYDRAULICS
Example 8.10
A trapezoidal irrigation channel excavated in silty sand having a critic tractive force on the horizontal of 2.4N / m^2 and angle of friction 30 is to be designed to convey a discharge of 10m^3/sOn a bed slope of 1:10000. The side slopes will be 1 (vert):2 (hor) .n =0.02.
Solution:
The channel bed is almost horizontal and the critical tractive force on the bed may therefore by taken as 2.4 N / m^2 The limiting tractive force on the sides is: