Post-cast anchor in prestressed concrete
Post-cast anchor in prestressed concrete
(OP)
My Eng-tips search did not result in an answer.
I am anchoring a shearwall to a concrete slab. The concrete slab is prestressed*. Are there any special requirements or limitations on using mechanical or adhesive post-cast anchors in prestressed concrete? I checked Hilti's RE500 ESR for example and the report did not specifically mention prestressed, post-tensioning, etc.
* Prestressed concrete is not in my wheel house. I assume any method of inducing stress (post-tension, etc.) is called prestressed. If not, I can find out what method is used if that matters.
TIA,
Juston
I am anchoring a shearwall to a concrete slab. The concrete slab is prestressed*. Are there any special requirements or limitations on using mechanical or adhesive post-cast anchors in prestressed concrete? I checked Hilti's RE500 ESR for example and the report did not specifically mention prestressed, post-tensioning, etc.
* Prestressed concrete is not in my wheel house. I assume any method of inducing stress (post-tension, etc.) is called prestressed. If not, I can find out what method is used if that matters.
TIA,
Juston
Juston Fluckey, SE, PE, AWS CWI
Engineering Consultant






RE: Post-cast anchor in prestressed concrete
Always best to scan the slab or beam before drilling and installing post-installed anchors.
RE: Post-cast anchor in prestressed concrete
Juston Fluckey, SE, PE, AWS CWI
Engineering Consultant
RE: Post-cast anchor in prestressed concrete
1) you can use something like a Rawl drive pin to improve the odds.
2) I've heard folk propose glue in the past. Obviously, some concerns with that.
Neither option gets you out of dealing with tie down anchorage.
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.