Shear tie splices
Shear tie splices
(OP)
A foundation mat that we are reviewing is 12 foot in thickness with reinforcing mats in the top and bottom of the mat. There are additional shear ties at 24 inches on center each way with 180 degree hooks on top and 90 degree hooks on the bottom tying the two mats together. Can the shear ties (#7) be lap spliced, or must they be mechanically spliced?





RE: Shear tie splices
Are ties there as shear reinforcement or as spacers? And why are they spliced anyway?
RE: Shear tie splices
RE: Shear tie splices
Are you talking about ties to transfer the shear between horizontal cold joints?
RE: Shear tie splices
RE: Shear tie splices
Check your code under splicing. #7 don't have to be mechanically coupled, a lap splice will do.
Regards
VOD
RE: Shear tie splices
If it only has a little cover then you can potentially get breakout of the bars where they have a tendency to straighten.
If it is seismic then check your detailing provisions in the local building code.