Pull-Out Rating for Concrete Achor Bolts
Pull-Out Rating for Concrete Achor Bolts
(OP)
I am looking for the pull out rating on a 1/2" anchor bolt in a concrete slab. The anchor bolts are conventional J-bolts with 4" or greater embedment in 2000 psi concrete.






RE: Pull-Out Rating for Concrete Achor Bolts
RE: Pull-Out Rating for Concrete Achor Bolts
HILTI have a design package called Profis which I believe can be downloaded (written for their own bolts obviously). They do have resin anchor bolts in their range which may give you a feel for what you are looking at.
Rule of thumb is 1 tonne per inch embedment, but that is nothing to design on, just a pointer.
RE: Pull-Out Rating for Concrete Achor Bolts
2000 psi concrete is trash. If you can't get at least 4000 psi you need to fire your whole QC department.
4" embedment is not going to be much. I woulf neglect the effects of the hook and analyze this as a rebar embedment problem. Remember to use the reduced area on the threaded section of the bolt as the cross sectional area.
Good Luck
RE: Pull-Out Rating for Concrete Achor Bolts
RE: Pull-Out Rating for Concrete Achor Bolts
RE: Pull-Out Rating for Concrete Achor Bolts
The problem with the hook anchor bolt is that they are ubiquitous. Substituting hardware store grade fully threaded rod is no solution because the material is low grade, and straight anchor bolts of various lengths, threaded 3 inches on each end do not appear in any supply houses that I contacted in New York state.