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A 1200 m long, 250 mm diameter cement-lined steel pipe CD carries a flow of 0.16m3/sec....

A 1200 m long, 250 mm diameter cement-lined steel pipe CD carries a flow of 0.16m3/sec. A gate valve located at on end of the pipe, Point C, is being closed by the water operator. At full valve closure, the water pressure measured at Point C is 750 Kpa. The elevation of Point C and Point D is 60 m and 85 m above sea level respectively. What is the water pressure at Point D of the pipe?

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