Problem 4.2 Solution - University of Washington

A concrete-lined trapezoidal channel with bottom width of 10 ft and side slopes of 1 vertical to 2 horizontal is designed to carry a o w of 3000 cfs. If the slope of the channel is 0.001, what would be the depth of o w in the channel? Solution: Assuming n =0:012 AR 2 3 h b8 3 = Qn 1:49S 1 2 0 b 8 3 = 3000 cfs0:012 1:490:00112 (10 ft) 8 3 =1:65 ................
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