Originally Posted by JoeD
They should be below frost line. That could be four feet in some areas.
I finally found the right part of the local building code and the minimum foundation depth is 3'11". I'll go another foot tomorrow and check out that corner.
Originally Posted by mudmixer
Could there have been an addition? - Could be some long term differential settlement.
The crack pattern was quite obvious despite all the coats of paint, but the were a few jogs that did not match where the mortar joints should have been, but it could have been built that way.
The cracks were obvious when I first pulled the metal siding off but not as pronounced until I hit them with a wire brush. Chunks of the original mortar fell out and it was a little wider than 1/4". They filled in pretty good. I plan on digging down around the whole house and parging all the block as well.
It was built in the '70s and then later the garage was added (originally just a car 'port'). With some of the things I've been finding, who knows what was done before.