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MATERIALS: Fiberboard Sheathing

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Title: MATERIALS: Fiberboard Sheathing


Check Table 3C, p. 278 of the 2001 Wood Frame Construction Manual (WFCM) for shear capacities for Fiberboard. I believe much of the testing was conducted by the American Hardboard Association (AHA). You might want to contact Louis Wagner of AHA. Here's contact information:



John "Buddy" Showalter, P.E.
Director, Technical Media
AF&PA/American Wood Council
1111 19th Street, NW, Suite 800
Washington, DC 20036
P: 202-463-2769
F: 202-463-2791

The American Wood Council (AWC) is the wood products division of the American Forest & Paper Association (AF&PA). AWC develops internationally recognized standards for wood design and construction. Its efforts with building codes and standards, engineering and research, and technology transfer ensure proper application for engineered and traditional wood products.

The guidance provided herein is not a formal interpretation of any AF&PA standard.  Interpretations of AF&PA standards are only available through a formal process outlined in AF&PA's standards development procedures.


From: Bill Polhemus <bill(--nospam--at)>
To: seaint(--nospam--at)
Subject: MATERIALS: Fiberboard Sheathing
At the risk of exposing yet more ignorance--whoever said there was no
such thing as a "dumb question" never got googled by a lawyer:
Has anyone here had experience with fiberboard sheathing for lateral
I know the model building codes really don't have that much data--I
think the tables such as 2308.9.3(4) in IBC 2000 were determined from
tests, so scant information is actually on the record. Is there any
other test data that has been approved?
Makers of these products include Georgia-Pacific "Stedi-R,"
International Bildrite "BraceRite," Knight-Celotex "Sturdy-Brace,"
Temple-Inland "FiberBrace," and Ludlow "EnergyBrace".