Civil Engineering - Hydraulics - Discussion

Discussion Forum : Hydraulics - Section 2 (Q.No. 6)
6.
For the most economical trapezoidal open channel,
half of the top width must be equal to one of the sloping sides
the hydraulic mean depth must be equal to half the depth of flow
the semicircle drawn with top width as diameter must touch the three sides of the channel
All of these.
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