Repeat Problem, but specify the lightest standard aluminum I-beam from Appendix. The beam will be extruded using alloy 6061-T6.
Problem
A 60 in long beam simply supported at its ends is to carry two 4800 lb loads, each placed 14 in from an end. Specify the lightest suitable steel tube for the beam, either square or rectangular, to produce a design factor of 4 based on yield strength. The tube is to be cold formed from ASTM A500, grade B steel.
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