It is necessary to pump 6000 gpm of water from a reservoir at an elevation of 900 fl to a tank whose bottom is at an elevation of 1050 ft. The pumping unit is located at elevation 900 ft. The suction pipe is 24 in. in diameter and very short, so head losses may be neglected. The pipeline from the pump to the upper tank is 410 ft long and is 20 in. in diameter. Consider that minor losses in the line equal 2.5 fl of water. The maximum depth of water in the tank is 38 ft, and the supply lines are cast iron. Find the maximum lift of the pump and the horsepower required for pumping if the pump efficiency is 76%.
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