Extensive Coring In Existing Slab
Extensive Coring In Existing Slab
(OP)
I am working on a project that is new construction –CIP concrete, two-way, flat slab. The design accounted for (6) 4” penetrations and (1) 6” penetration placed fairly close together in a column strip. During construction the contractor placed the sleeves for these penetrations in the wrong location. They now have to core drill the exact same penetrations approximately 10” away from the current location. I am considering creating a FEA in RISA 3D to determine the effects of this on this slab. I planned to maintain the current penetrations in the model as I do not believe that I can gain any strength from filling the existing penetrations. For any required repairs I was thinking carbon fiber. Is there a better approach to this?






RE: Extensive Coring In Existing Slab
Regarding the mislocated holes, I would model those penetrations also and see if the slabs is OK with all those penetrations. If it is fine, then you can just grout the holes and not worry about it. If it isn't passing with all the penetrations then your repair will have to be detailed differently. We can deal with that then if that's the case.
Good luck.
Gabriel
RE: Extensive Coring In Existing Slab
RE: Extensive Coring In Existing Slab
Thanks for your feedback. I appreciate knowing that this is the correct path to move down. I am hoping that all checks out.
Strucguy,
I am attaching a plan with the basic condition. I did not want to overload you with all the dimensions if you were just trying to get a general understanding of what was going on. Please let me know if you would like more detail.
RE: Extensive Coring In Existing Slab
RE: Extensive Coring In Existing Slab