donaldtoo
Well-Known Member
Here, slab is a solid piece of concrete. Some older homes don't have basements and have crawl spaces beneath so the house is still raised up off the ground. I'm guessing but I think our basement is about 10 feet deep or maybe more. Our zoning only allows for full basements. Additions in relative small scale can have like a 4 foot foundation to form somewhat a crawl space. Over the years the additions that fail, you'll see them more slanty than the rest of the house or if they have tried to add an attached garage. Freezing ground does some unique things. Last year we had a hump in the middle of our driveway that wasn't there before. It sank back down in the spring but there is now a pretty little crack that is about 75 feet long. Harsh winter, lots of sub zero lots of snow.
Forgot to follow up last night...
When we lived in NoCal, our houses were on pier and beam foundations with crawl spaces. No slab.
Also, because of the drought down here, some folks have been having issues with their slabs settling, as the soil has been so dry.