The pressure from water mains located at street level may

Chapter 1, Problem 1.43

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The pressure from water mains located at street level may be insufficient for delivering water to the upper floors of tall buildings. In such a case, water may be pumped up to a tank that feeds water to the building by gravity. For an open storage tank atop a 300-ft-tall building, determine the pressure, in \(\mathrm{lbf} / \mathrm{in} .^{2}\), at the bottom of the tank when filled to a depth of 20 ft. The density of water is \(62.2 \mathrm{lb} / \mathrm{ft}^{3}\), g 5 32.0 \(\mathrm{ft} / \mathrm{s}^{2}\), and the local atmospheric pressure is \(14.7 \mathrm{lbf} / \mathrm{in}^{2}\)