Water flows in the symmetrical, unfinished concrete
Chapter 10, Problem 10.77(choose chapter or problem)
Water flows in the symmetrical, unfinished concrete trapezoidal channel shown in Fig. P10.77 at a rate of \(\mathrm{120 ~ft^3 /s}\). The slope is 4.2 ft/2000 ft. Determine the number of cubic yards of concrete needed to line each 1000 ft of the channel.
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