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RE: Double Layer Plywood Shear Wall

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Seeing as how the nails control in sheathing, and I would guess that you wouldn’t have applied a second layer without first pushing the nail spacing to its minimum… I can’t imagine that two layers of sheathing of the same side of the wall would accomplish anything other than tearing the studs up. 


From: ENGRLAINES(--nospam--at) [mailto:ENGRLAINES(--nospam--at)]
Sent: Monday, July 06, 2009 3:46 PM
To: seaint(--nospam--at)
Subject: Double Layer Plywood Shear Wall


Contractor "forgot" the interior layer of plywood in a shear wall spec'd for sheathing on both sides. Wants to put double layer on the outside since the interior has been finished. I cannot find any restrictions in the Codes,  so I assume this can be done assuming the same requirements for sheathing on two-sides and no reduction in strength. Anything special to watch out for?



Charles O. Laines, S.E.




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