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RE: Wood Design - 'G' shearing Modulus & 'E' elastic Modulus

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I do not have it but the Structural Board Association has a web site at or .  I have one piece of literature from
them with both addresses on it.

Roger Davis
SDS Architects, Inc
205 N. Dewey Street
Eau Claire, WI 54703

-----Original Message-----
From:	Seaintonln(--nospam--at) [mailto:Seaintonln(--nospam--at)]
Sent:	Wednesday, July 07, 1999 2:43 PM
To:	seaint(--nospam--at)
Subject:	Wood Design - 'G' shearing Modulus & 'E' elastic Modulus

Can someone provide me with the Shearing Modulus 'G' for OSB panels?

The design problem in the SEAOSC Seminar notes uses an Elastic Modulus for
the Chord of 1,700,000. However, if the chords are constructed from the same
grade of lumber as the walls (stud grade) then the 'E' value for Douglas fir
stud grade should be 1,400,000.

Is this true, or am I missing something in the example?

Dennis Wish PE