A new, fi nished-concrete trapezoidal channel, similar to Fig. 10.7, has b 5 8 ft, yn 5
Chapter 10, Problem p10.28(choose chapter or problem)
A new, fi nished-concrete trapezoidal channel, similar to Fig. 10.7, has b 5 8 ft, yn 5 5 ft, and 5 508. For this depth, the discharge is 500 ft3 /s. (a) What is the slope of the channel? (b) As years pass, the channel corrodes and n doubles. What will be the new normal depth for the same fl ow rate?
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