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Square vs. rectangle? Tube bridge physics.
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exit
Posted 2/23/2013 00:15 (#2919471 - in reply to #2919457)
Subject: Re: Square vs. rectangle? Tube bridge physics.


Athens, Ga		Section modulus or Area moment of inertia is what you need to look up. Or mass moment of inertia.

The 12x12 will hold more. I-beams strength is in the flanges, and the 12x12 will have more flange than the 8x12. Or at least that's what they taught me back in engineering school. I can do the numbers tomorrow.

Edited by exit 2/23/2013 00:18
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