Shot-In Sill plate anchors

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?


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.;_ylu=X3oDMTBybnZlZnRlBHNlYwNzcgRwb3MDMQRjb2xvA2FjMgR2dGlkAw–/SIG=12qmn0f2i/EXP=1257857046/**http%3a//

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

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. :):smiley:

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. :mrgreen::wink:

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

Thanks for the info. The links are good information.