Chuck Utzman, P.E.
Thor Matteson wrote:
> Ken,
>
> Yes, you can use T1-11 and other grooved siding patterns for shear
> panels. The two most important things to remember are:
>
> 1. The effective thickness of the shear panel is the thickness
> that the nails are driven through. Panels are usually 5/8-inch thick
> with 5/16-inch deep grooves. If you nail through the thin part of the
> panel along one edge (where the adjacent panel overlaps) then you can
> only count the 5/16-inch thickness.
>
> 2. The "quick way" (pronounced "WRONG way" by engineers and the
> APA) to install panels is to nail only three sides of each sheet of
> plywood. The edge that will be overlapped by the adjacent panel is not
> nailed, and when the adjacent sheet is installed it overlaps and
> "captures" the previous panel--but provides no shear transfer
> capacity. APA's publication "Design/Construction Guide--Diaphragms
> and Shear Walls" (their Form No. L350F, probably still available at
> their website) shows this very clearly.
> To make sure there is enough room to nail both edges of
> plywood, you may want to specify wider studs behind panel joints (this
> is essential if you have wide grooves and need the full 5/8-inch panel
> thickness for shear capacity).
>
> See Section 3.4.14 of "Wood Framed Shear Wall Construction--an
> Illustrated Guide," available at www.shearwalls.com and fine
> bookstores everywhere.
>
> Best wishes,
>
> Thor Matteson, SE
>
>
>
>> From: ken ng <zy7up@yahoo.com>
>> Subject: the use of T1-11 Siding Plywood
>> To: seaint@seaint.org
>>
>>
>> Can I use T1-11 exterior plywood sheathing for shearwall?=0AIf yes,
>> would=
>> =A0that mean I=A0would not=A0need plywood or OSB sheathing for my
>> shearwall=
>
>
> ******* ****** ******* ******** ******* ******* ******* ***
> * Read list FAQ at: http://www.seaint.org/list_FAQ.asp
> * * This email was sent to you via Structural Engineers *
> Association of Southern California (SEAOSC) server. To * subscribe
> (no fee) or UnSubscribe, please go to:
> *
> * http://www.seaint.org/sealist1.asp
> *
> * Questions to seaint-ad@seaint.org. Remember, any email you *
> send to the list is public domain and may be re-posted * without
> your permission. Make sure you visit our web * site at:
> http://www.seaint.org ******* ****** ****** ****** ******* ******
> ****** ********
******* ****** ******* ******** ******* ******* ******* ***
* Read list FAQ at: http://www.seaint.org/list_FAQ.asp
*
* This email was sent to you via Structural Engineers
* Association of Southern California (SEAOSC) server. To
* subscribe (no fee) or UnSubscribe, please go to:
*
* http://www.seaint.org/sealist1.asp
*
* Questions to seaint-ad@seaint.org. Remember, any email you
* send to the list is public domain and may be re-posted
* without your permission. Make sure you visit our web
* site at: http://www.seaint.org
******* ****** ****** ****** ******* ****** ****** ********