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[SEAOC] Re: [SEAOC] Re: [SEAOC] Re: [SEAOC] plywood shear panel nailing

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>Dennis Wish wrote:
>As far as I know, SEAOSC has done studies for the difference in shear 
>walls nailed with sinkers verses common nails. L.A. City has called for 
>a degradation of 15% off the rated shear where sinkers are used in lieu 
>of common nails.
>I know that there is still some controversy over this issue.
>I also agree with Ray that the major problem with power driven nails is 
>the damage to the ply layers. The advantages that I read about power 
>driven nails is the advantage of the hot glue that creates a better bond 
>with the wood for resistance to nail withdrawl.

        I have heard the same thing: that the covering (green vinyl?)
creates a "glue" which bonds to the sheathing creating shear values
comperable to normal. What did LA City base their 15% reduction on? Testing?
                - Terry