Attaching CMU wall to concrete slab-retrofit
Our 40 year old garage has a concrete slab then an approximately 3ft high CMU wall on top. Most of the bottom row of block is below grade and whatever motor originally fixed the block to the slab is gone and there does not seem to be any type of rebar. We live in upstate NY And when the ground freezes, the walls move slightly, enough that the man door doesn’t latch.
We tried digging around the outside of the garage and installing drainage with crushed stone thinking if the ground didn’t exert pressure on the block, that the movement would be less. That had only a minor improvement. Are there other options we could try besides drilling rebar through the block in to the slab?