We’ve all seen it - large cracks running through a garage floor. My understanding is that aside from situations such as a basement underneath a garage, typically the garage floor is a separately poured slab from the home foundation, and cracking in a garage floor, even significant ones, are not indicators of anything affecting the foundation / structure of the home itself.
Is this understanding correct? I’m wondering if garage floors are ever poured with the foundation. I came across some more notable cracking in a floor this week in a slab-on-grade construction, and since the vast majority of the foundation is not visible, I question whether cracking can indicate a general soil issue for the home.
Not many good pics, as the garage was packed full of stuff. It’s only about 2 mm wide and runs from the middle of the driveway to the back of the garage, and before it hits the curb it runs right all the way to the other side of the garage. Looks like a large “L”.
op is mono-slab from my view here
cracks can be from improper soil compaction or heave
curb chip appears to be impact damage
below is typical mono-slab from around here
Depends on what area you are in. Both types of floor are common. In northern areas the floor is commonly poured separately. In southern climates the monolithic pour is used more often. Soil types and average temperature are determining factors.
