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RE: Torsion in Wide Flange Beam
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 Subject: RE: Torsion in Wide Flange Beam
 From: "Foy, Warren" <Warren.Foy(nospamat)mhgrp.com>
 Date: Wed, 25 May 2005 11:52:13 0400
A
torsionally pinned condition means that the supports cannot develop
axial stresses in the beam flanges, compression on one side of the flange
and tension on the other side, due to warping torsion. Simple support
connections for gravity loads are, I think, necessarily also torsionaly simply
supported. For a beam to be torsionally fixed, there needs to be some
means of developing axial stresses in the beam flanges. A fixed end,
moment connection, can do this but the stresses due to torsion are
additive/deductive to the stresses due to flexure.
HTH,
Warren
Foy

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