Hairpin to Resist Thrust
Hairpin to Resist Thrust
(OP)
How does a hairpin resist thrust. From a design example I have, the hairpin transfers the thrust into the slab, then slab to WWF which acts as a tension tie to the opposite hairpin. This approach seems valid until I looked at our control joint detail. The WWF is supposed to be discontinuous at the joints (not that it ever happens) which would invalidate that approach. The only other approach I see is to use the friction resistance between slab and soil. The only problem with that is Geotechs say if a vapor barrier is present the C.O.F. is too small to be of any use.
Any thoughts? Does anyone have another approach using hairpins? I am thinking about always using tension ties.
Any thoughts? Does anyone have another approach using hairpins? I am thinking about always using tension ties.






RE: Hairpin to Resist Thrust
RE: Hairpin to Resist Thrust
Also, if you have isolated foundation, much of the thrust can be resisted by the soil on the sides of the foundation thru passive pressure.
RE: Hairpin to Resist Thrust