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.