Question

Due 9 November 2020 at 12:20 PM. No late projects will be accepted. No exceptions. The figure above shows a simplified diagram of a water distribution system for a fifteen story building. Line 1 is 150 ft of 3" Sch 40 steel pipe with 7 standard 90° elbows, and a gate valve and a globe valve. Line 2 is 62 ft of 2" Sch 40 steel pipe with 5 standard 90° elbows, and two gate valves. Line 3 is 75 ft of 1" Sch 40 steel pipe with 8 standard 45° elbows, a gate valve and a globe valve. Line 4 is 57 ft of 3/4" Sch 40 steel pipe with 4 standard 90° elbows, a gate valve and a globe valve. Line 2 is 50 ft above the pump, line 3 is 100 ft above the pump, and line 4 is 150 ft above the pump. Determine the pump discharge pressure and the flow rate through each line if the pump is delivering 165 gpm. Redo the analysis assuming the pump curve is given by P = 330 – 0.008Q², in which P is given in psi and Q is given in terms of gpm. If the pump is insufficient to supply water to the storage tanks, determine the minimum specifications that would be required and recommend a specific make and model that is sold online.

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