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RE: OSHPD SCBF's using HSS Braces

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I'm pretty sure it's rectangular and square as opposed to round HSS sections. Those sections were the only ones which have a tendency to buckle locally or at least more so than the round sections.



T. William (Bill) Allen, S.E.


Consulting Structural Engineers
V (949) 248-8588 F(949) 209-2509

-----Original Message-----
From: Gerard Madden, SE [mailto:gmse4603(--nospam--at)]
Sent: Wednesday, October 15, 2008 3:26 PM
To: seaint(--nospam--at)
Subject: OSHPD SCBF's using HSS Braces


Section 2205A. of the CBC modifies AISC 341 for SCBF's using RECTANGULAR HSS sections. The section requires them to be filled solid with cement grout. This is for OSHPD only projects.

Question: Do the really mean Rectangular and Square HSS sections or only Rectangular as stated?