Coupling nuts for shear loading

[cl220]

I have a foundation that the customer wants to raise the existing floor level. The anchor bolts see strictly shear load. I have used coupling nuts in the past when the bolts were loaded in tension. I have tried finding rating for coupling bolts in shear but have been unsuccessful. Has anyone used coupling nuts to extend anchor bolts for shear loading? My plan would be to chip out the concrete a few inches so that the coupling connection would be inside of high strength grout.

 

[KootK]

I can't say that I've ever considered a coupling nutted assembly's shear capacity before. I'm inclined to say that it should be a non-issue but, alas, I've no proof of that. Usually, it's the concrete breakout that governs by a wide margin. I'd try placing a call to the Portland Bolt company. They're the go to bolt guys 'round these parts.

I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.