Dry set concrete anchors
- Thread starter Food Scientist
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Originally Posted by tahoe_hybrid
they are illegal to use for permanent structures
Very tough to find this information. Here is one link: https://up.codes/viewer/virginia/va...hening-of-cripple-walls-and-sill-plat#A3
"Where the building has an existing continuous perimeter foundation, all perimeter wall sill plates shall be anchored to the foundation with adhesive anchors or expansion anchors in accordance with Table A3-A. "
More investigation is needed. Not sure about piers vs. continuous perimeter foundation. How are sill plates anchored to cement block basements?
This FEMA Safe Room (tornadoes) bulletin recommends adhesive anchors: https://www.fema.gov/media-library-...e6ac/FEMA-FS_SafeRoom_Foundation_508.pdf
This engineering article mentions adhesive anchors: https://csengineermag.com/article/anchorage-of-wood-shear-walls-to-concrete-for-tension-and-shear/
" A wide variety of proprietary products are available for post-installed anchors that have been evaluated using ICC-ES AC193 for mechanical anchors and AC308 for adhesive anchors."
It looks like the answer will be found Googling "AC308 Post-installed Adhesive Anchors. " After studying this a bit more, I would also study if screw anchors are allowed for structures.
Again, the OP should be able to get this information from the bracket manufacturer and save himself a lot of research.
they are illegal to use for permanent structures
Very tough to find this information. Here is one link: https://up.codes/viewer/virginia/va...hening-of-cripple-walls-and-sill-plat#A3
"Where the building has an existing continuous perimeter foundation, all perimeter wall sill plates shall be anchored to the foundation with adhesive anchors or expansion anchors in accordance with Table A3-A. "
More investigation is needed. Not sure about piers vs. continuous perimeter foundation. How are sill plates anchored to cement block basements?
This FEMA Safe Room (tornadoes) bulletin recommends adhesive anchors: https://www.fema.gov/media-library-...e6ac/FEMA-FS_SafeRoom_Foundation_508.pdf
This engineering article mentions adhesive anchors: https://csengineermag.com/article/anchorage-of-wood-shear-walls-to-concrete-for-tension-and-shear/
" A wide variety of proprietary products are available for post-installed anchors that have been evaluated using ICC-ES AC193 for mechanical anchors and AC308 for adhesive anchors."
It looks like the answer will be found Googling "AC308 Post-installed Adhesive Anchors. " After studying this a bit more, I would also study if screw anchors are allowed for structures.
Again, the OP should be able to get this information from the bracket manufacturer and save himself a lot of research.
Main reason I'm using screw type is that's what came with the building package. These are engineered building packages, so the PE on the other end would have to sign off on the design if needed. I've seen them used by a YouTuber that makes a living building post frame structures, RR Buildings who has built several engineered buildings in northern Illinois, similar to my location. Simpson is a reputable company as well. Having said all that I'm not saying they are the best out there and will research some more.
Keep in mind though agricultural buildings are not held to the same code as dwelling structures.
Keep in mind though agricultural buildings are not held to the same code as dwelling structures.
So reading through the links doitmyself (and I do appreciate the research) the first link is for housing structures and the adhesive refers to existing sill foundation walls. Also at the top of the article under exceptions it lists this: Buildings with a lateral force-resisting system using poles or columns embedded in the ground. This building has several knee braces for the walls and the roof.
From what I read mechanical fasteners are not allowed in seismic areas, like where Tahoe hybrid is located, or in Virginia. Like I said in another post I'll order some brackets and do some testing.
From my original question, which the discussion has deviated a bit, I still don't think the screw type anchoring system will fail any differently (hopefully never fail at all) in a pier vs a poured wall foundation, which is the typical application for these screw type brackets.
From what I read mechanical fasteners are not allowed in seismic areas, like where Tahoe hybrid is located, or in Virginia. Like I said in another post I'll order some brackets and do some testing.
From my original question, which the discussion has deviated a bit, I still don't think the screw type anchoring system will fail any differently (hopefully never fail at all) in a pier vs a poured wall foundation, which is the typical application for these screw type brackets.
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