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Re: Effective Width for Steel Plates

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I usually limit the effective width based upon Tbl. B5.1, that gives about 3" for 3/16" A36 steel plate.  Even visually, this looks about right, while 10.5" looks excessive.  IMO, such plate will buckle both on the compression and on the tension sides, so no matter what your effective width, I would still somehow stiffen/restrain the plate edges.
Steve Gordin SE
Irvine CA    
----- Original Message -----
Sent: Tuesday, September 13, 2005 10:21 AM
Subject: Effective Width for Steel Plates

     I am wondering what others use for the effective width of plates, used as flanges when the plates are very wide in comparison to there thickness..  I have  3/16 plates that are 24 inches wide, welded to the top and bottom faces of a 3 inch HSS.  This gives a 10.5 inch overhang on each side of the HSS.  I would appreciate any references for the effective width used in stiffness and stress calculations.

Acie P. Chance

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