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RE: 2006 IBC Wood Sill Plate Washers

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Joseph:  See the upper right portion of page 28, Dec 2006 edition of Structural Engineer.
Greg Michel
-----Original Message-----
From: joseph goldbronn [mailto:jgoldbronn(--nospam--at)]
Sent: Tuesday, January 23, 2007 3:33 PM
To: seaint(--nospam--at)
Subject: 2006 IBC Wood Sill Plate Washers

Section 2305.3.11 of the 2006 IBC requires steel plate washers to be 0.229x3”x3” and the 2003 IBC required a 3/16”x2”x2” per 2305.3.10.  Does anyone know where this change came from and why?  I believe the larger width may be a result of trying to reduce cross-grain bending of the sill plate but why did the plate become thicker?


Joseph Goldbronn

Crosby Group

3444 Marconi Avenue

Sacramento, CA 95821

Phone - 916-563-7600

Fax - 916-563-7610