>
> Dear list:
>
>
>
> I came to inspect sill bolting installation at one of my projects and
> found that the contractor (he is a licensed architect too) installed a
> 1/8" Styrofoam seal. This material is usually used around windows at
> in concrete buildings. The architect/builder thought that he is
> improving things by installing at all the exterior walls.
>
>
>
> Is there any concern about the sill plate shear resistance with having
> this new slip surface and a small gap? Please let me know you thoughts.
>
>
>
>
>
> Here's the link to the product info:
>
> http://www.dow.com/PublishedLiterature/dh_0032/0901b803800329ac.pdf?filepath=/PublishToInternet/InternetDOWCOM/styrofoam/pdfs/noreg/179-07153.pdf,/PublishToInternet/InternetDOWCOM/styrofoam_old/pdfs/noreg_old/179-07153.pdf&fromPage=BasicSearch
>
>
>
> /Alexander (Sasha) Itsekson, SE/
>
> *Enginious Structures, Inc.*
>
> Oakland, CA
>
> www.Enginious-Structures.com <http://www.enginious-structures.com/>
>
>
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>
I have seen this on most residential and commercial buildings in
Anchorage. The idea is to create a barrier between the concrete or CMU
that can get wet and the sill plate that will wick up the moisture.
Even without the barrier, I have never heard of anyone calculating the
shear transfer using the friction between the sill plate and the top of
the foundation wall. The shear transfer is still through the anchor rod
bearing on the wood sill plate.
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