Bruce L. Bergman wrote:

Or, cut a slot in the concrete slab under the door... if done
carefully, you'll have a pit for auto maintenance when it's
no longer needed for mill clearance.

This will work - but in newer homes (~25 - 50 years?) you'll likely
find a "Bond Beam" as the footing carries through under the doorway.
Keeps the walls from drifting apart over time... . You can take the
slab out, but the bond beam is going to be a problem.

Is that a footing that runs under the doorway? I ran my footings all around the perimeter
of my garage, er shop, regardless of where any door was.

Wes
--
"Additionally as a security officer, I carry a gun to protect
government officials but my life isn't worth protecting at home
in their eyes." Dick Anthony Heller

Wes wrote:
Bruce L. Bergman wrote:
find a "Bond Beam" as the footing carries through under the doorway.
....


Is that a footing that runs under the doorway? I ran my footings all around the perimeter
of my garage, er shop, regardless of where any door was.

And in frosty IL, Iggy likely has a foundation under his garage, going
down 4' to a footing below the lowest frost.

Bob

Bob Engelhardt wrote:

Is that a footing that runs under the doorway? I ran my footings all around the perimeter
of my garage, er shop, regardless of where any door was.

And in frosty IL, Iggy likely has a foundation under his garage, going
down 4' to a footing below the lowest frost.


And in near 45N latitude, we only use 16" footers for a garage, well at least when I built
mine. That glacial sand drains really well.

Wes