A threaded machine bolt of 3/4 in diameter is screwed up tightly, fastening together two steel parts. To avoid the failure of the bolt in shear, the unit shearing stress must not exceed the elastic limit stress of 36000 psi. What maximum pull may safely be exerted on a wrench with a 20 in. moment arm to avoid failure on the root area if its root diameter is 0.6688 in. and if we assume that friction under the bolt head nullifies 25 percent of the pull

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Pressure Vessels

The term pressure vessel refers to a closed container that contains gas or liquid at a different pressure than environment pressure. The pressure vessels have a wide scale of applications in our day-to-day lives and other industrial places. Some common examples of pressure vessels are gas cylinders, autoclaves, compressor vessels, etc.