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A large chandelier weighing 1500lbs. is suspended from the roof of a theater lobby. The steel pipe from which it hangs is 20ft long. Determine the size of the pipe necessary to carry chandelier safely. Use A36 steel. What is the resulting elongation of the pipe?

I calculated reqd A=54.3in^2 to get diameter of 8.31in and elongation of 216inches. Am I doing it right?

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