Design a minimum-weight hollow circular steel column

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Reference no: EM131146103

Design a minimum-weight, hollow circular steel column for the water tank shown in Fig. 3.72. The weight of the tank (W) is 100,000 lb and the height is 50 ft. The stress induced in the column should not exceed the yield strength of the material, which is 30,000 psi, when subjected to a harmonic ground acceleration (due to an earthquake) of amplitude 0.5 g and frequency 15 Hz. In addition, the natural frequency of the water tank should be greater than 15 Hz. Assume a damping ratio of 0.15 for the column.

Reference no: EM131146103

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