Epoxy holdown into existing PT slab
Epoxy holdown into existing PT slab
(OP)
I am doing a small residential remodel where the existing slab is post tensioned. Long story short because the owner wants a new bedroom in an existing 3 car garage I have the following 2 issues related to the existing PT slab:
1. I will have a new wood framed shear wall with 2 new holdowns that will need to be epoxied into the existing exterior perimeter footing.
2. The new 2x stud wall between the new bedroom and the existing garage will be non bearing, but it will have to sit on a new concrete curb. Since this new conc curb will be located in the interior of the existing PT slab I am proposing to dowel 3" min into the existing pt slab w/#3 dowels @ 18" o.c. and form the new curb.
My question is if I state on the plans to have the existing PT slab scanned in order to locate the existing tendons prior to any work, would epoxying new holdowns into that exterior footing be an issue as long as they do not cut a tendon?
Any comments would be greatly appreciated.
Erik Gibbs P.E.
1. I will have a new wood framed shear wall with 2 new holdowns that will need to be epoxied into the existing exterior perimeter footing.
2. The new 2x stud wall between the new bedroom and the existing garage will be non bearing, but it will have to sit on a new concrete curb. Since this new conc curb will be located in the interior of the existing PT slab I am proposing to dowel 3" min into the existing pt slab w/#3 dowels @ 18" o.c. and form the new curb.
My question is if I state on the plans to have the existing PT slab scanned in order to locate the existing tendons prior to any work, would epoxying new holdowns into that exterior footing be an issue as long as they do not cut a tendon?
Any comments would be greatly appreciated.
Erik Gibbs P.E.





RE: Epoxy holdown into existing PT slab
I deal with this issue constantly because of omitted/misplaced hold downs. If the hit a tendon, it snaps and they have to re-thread a new one.
The definition of a structural engineer: overdesign by a factor of 1.999, instead of the usual 2.
RE: Epoxy holdown into existing PT slab
RE: Epoxy holdown into existing PT slab
Mike McCann
MMC Engineering
RE: Epoxy holdown into existing PT slab
kansas city concrete companies
RE: Epoxy holdown into existing PT slab