For a most economical trapezoidal open channel, the half of the top width must be equal to
Options
A. the bed width
B. one sloping side
C. the depth of flow
D. None of these.
Correct Answer
one sloping side
More questions
1. At the same mean velocity, the ratio of head loss per unit length for a sewer pipe flowing full to that for the same pipe flowing half full would be :