Redo Problem 4.1.14 with QB = 8 cfs and Qc = 8 cfs. Should the discharge in AB in this case be greater or less than that of Problem 4.1.14? Why?
Problem 4.1.14
All the pipes in Figure P4.1.14 have a Hazen-Williams coefficient of 100. Pipe AB is 3, 000 ft long and has a diameter of 2.0 ft. Pipe BC1 is 2,800 ft long with a diameter of 1.0 ft, and pipe BC2 has a length of 3,000 ft and a diameter of l.5 ft. Pipe CD is 2,500 ft long with a diameter of 2.0 ft. The water surface elevation of reservoir A is 230 ft (HA) and reservoir D (HD) is 100 ft. Determine the discharge in each pipe and the total head at points B and C if QB = 0 and QC = 0. Ignore minor losses.

Figure P4.1.14

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HD