Shot-In Sill plate anchors

[Linda J. Foster]

Looked at new construction yesterday. The sill plate on exterior walls had 1/2 inch anchor bolts of the usual variety within 6 foot spans. Where sill plate boards were butt-joined together, shot-in anchors had been used about 4 inches from each end.

Are the shot-in's sufficient, or should the sleeved 'Red Head' type anchors been used?

Thanks,

[Marcel R. Cyr]

Here Linda, this might help. It is limited to certain Zones and I would also check with the local AHJ.

Not something I would like to see, but I guess Hilti had it approved to meet the IRC 403.1.6.
Hope this helps.
http://rds.yahoo.com/_ylt=A0geu9qWDv...uated-2002.pdf

[David E. Helm]

It all depends on your seismic zone. They would not be allowed here in Washington.

[Marcel R. Cyr]

That is what I found David, it is limited to Seismic Design Catagories A,B, and C or Zones 0,1,2, and 3.
I am surprised they even allow it at all.

[Terry B. Clayton]

Good info Marcel. I was wondering how it would be determined if the proper Shot and Pins are being used. Thanks

[Marcel R. Cyr]

Originally Posted by tclayton

Good info Marcel. I was wondering how it would be determined if the proper Shot and Pins are being used. Thanks

Page 4 Terry, 1-1/2" embedment with a 2000 psi minimum concrete.
So right there we know that is not going to happen.
3000 psi concrete will take 14 days to achieve 75% strength. They usually have the house built by then.

[James H. Bushart]

Here's more on seismic zones and sill plates (and other good stuff) from JLC:

http://www.jlconline.com/cgi-bin/jlc...3fe5164cab1236

[Linda J. Foster]

Thanks for the info. The links are good information.
Linda