A wide channel with a bed slope of 15 X conveys a specific discharge of 25 /s. A gate is located at the channel inlet where the depth of water at the vena contracted section is 1 ft. Determine the...

A wide channel with a bed slope of 15 X

conveys a specific discharge of 25

/s. A gate is located at the channel inlet where the depth of water at the vena contracted section is 1 ft. Determine the length of the concrete apron to be constructed after the gate to contain the jump. Take the Manning roughness coefficient as 0.018 and assume the length of the jump to be 7 times its height.