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RE: HSS Torsional Constant

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See the commentary, AISC LRFD 3rd Edition, Page 16.2-36.  That defines it for both round and square.
I hate the commentary, because there are times where the information presented could easily be included in the initial specification.  This is one such instance.
Dave Maynard, PE
Gillette, Wyoming
-----Original Message-----
From: Garner, Robert [mailto:rgarner(--nospam--at)]
Sent: Tuesday, June 28, 2005 11:55 AM
To: seaint(--nospam--at)
Subject: HSS Torsional Constant

AISC LRFD Third Edition, Page 16.2-8, Formula 6.1-1 lists a torsion constant, C.  Does anyone have a formula the constant C, or know where it is defined?


Thanks all.


Bob Garner, S.E.


R. Garner

Moffatt & Nichol

Tel.:  (619) 220-6050

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e-mail: rgarner(--nospam--at)


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