Wednesday, September 16, 2009

Re: Steel straps on wood shear walls

2008 SDPWS section 4.4.1.4 states "Where windows and doors interrupt wood structural panel sheathing or siding, framing anchors or connectors shall be provided to resist and transfer the appropriate uplift loads around the opening and into the foundation."

Also the combined shear and wind uplift resisting system using sheathing still must comply with all requirements in section 4.3 including section 4.3.6.4.2 which states "Uplift Anchorage at Shear Wall Ends: Where the dead load stabilizing moment is not sufficient to prevent uplift due to overturning moments on the wall (from 4.3.6.1.1 or 4.3.6.1.2), an anchoring device shall be provided at the end of each shear wall."


---- AWC Info <AWCInfo@afandpa.org> wrote:
> Alternatively, you can now design the sheathing to resist combined
> uplift and shear per section 4.4 of the 2008 Wind/Seismic Standard:
>
>
>
> http://www.awc.org/Standards/SDPWS.html
>
>
>
> HTH
>
>
>
> Buddy
>
>
>
> John "Buddy" Showalter, P.E.
> Director, Technical Media
>
>
>
> American Wood Council
>
> Engineered and Traditional Wood Products
> 1111 19th Street, NW, Suite 800
> Washington, DC 20036
> 202-463-2769
> www.awc.org <http://www.awc.org/>
>
>
>
> 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: Jim Wilson <wilsonengineers@yahoo.com>
>
> Subject: Steel straps on wood shear walls
>
> To: seaint@seaint.org
>
>
>
> Is there a definitive reference stating that steel=A0straps are
> okay=A0to b=
>
> e placed over wall sheathing and not directly to the studs before the
> sheat=
>
> hing is installed?=A0 I've googled it, I've called Simpson and I've
> tried t=
>
> o look to the APA but I can only find indirect statements about
> it.=0A=0ASi=
>
> mpson does mention that different nail sizes can be used for the
> different =
>
> installation methods.=A0 That=A0isn't generic enough for the
> condition.=0A=
>
> =0AThanks,=0AJim Wilson, PE=0AStroudsburg, PA
>
>
>


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