I am adding a rom to a PT slab. The guys I work with don’t think it is necessary to x-ray the slab before we anchor the new plate. The new room involves opening up a wall for a pocket door and framing a 7′ wall that turns 1′ into the same existing wall. They think we can run 1 1/2 tapcons into the concrete and glue the plate for integrity. This is a steel stud home and I don’t disagree about the glue only the risk. My experience with PT Slabs is limited. how about another opinion.
You can normally shoot and/or drill up to around 3/4" with no concern.
Steel stud wall shot into PT slabs are very very common in commercial construction, albeit with lighter gauge studs than you are probably using
Edited 1/16/2008 11:00 pm ET by McMark
For the most part PT is the only floors & ceilings that I deal with.
I have seen pt cables closer to the surface more times than I have seen them on the bottom.
Anchors for your new wall are to keep it from moving side to side not pull out right?
Shallow verses deep isn't really relevant when it comes to sheer.
I would use a shorter & wider anchor if you're anchoring wood, & just short shot if you're putting down track for steel studs.
If you want added comfort you could use the epoxy they use to add rebar to existing concrete.