Answered: A proposed elevated tank for a certain…

Sustainable Energy

2nd Edition

ISBN:9781337551663

Author:DUNLAP, Richard A.

Publisher:DUNLAP, Richard A.

Chapter18: Energy Storage

Section: Chapter Questions

Problem 4P

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A proposed elevated tank for a certain community has a diameter of 72 inches and a height of 120 inches. It is to draw water by a pump from an aquifer down below the ground. Two steel hoops, 24.4 in2 in cross section, are installed around the tank, one at the bottom and one at the top, to prevent the bursting of the tank by the water pressure inside. (Use unit weight of water, water = 62.4 lb/ft3).

The given ‘h’ in ft is the height of the water inside the tank so obviously the tank is not fully filled. (h in ft.) = 8.523

a) Compute the internal stress at the bottom of the tank (in psf).
b) Determine the tensile stress at the top (in psi).
c) Determine the tensile stress at the bottom (in psi).

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