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[ATM] Polar moment of inertia for a square tube?

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Subject: [ATM] Polar moment of inertia for a square tube?
From: "Tom Krajci" <tom_krajci@tularosa.net>
Date: Fri, 2 Dec 2005 10:36:48 -0700
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For twisting/torsion I need to know the polar moment of inertia of a square
tube, but I can't find it.  I can find the formula for a round tube:
http://physics.uwstout.edu/StatStr/Strength/Torsion/tors62.htm

Can someone point me to a formula for polar moment of inertia for a square
tube?

Thanks in advance,

Tom Krajci
Cloudcroft, New Mexico
http://overton2.tamu.edu/aset/krajci/



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