A tall open-topped standpipe has an inside diameter of 2,750 mm and a wall thickness of 6 mm. The standpipe contains water, which has a mass density of 1,000 kg/m3 . (a) What height h of water will produce a circumferential stress of 16 MPa in the wall of the standpipe? (b) What is the longitudinal stress in the wall of the standpipe due to the water pressure?

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