Does a concrete slab need footings below the frost line?
The slab would be for a storage shed, unheated and free standing. I would tend to go with concrete so it will serve as the floor, but if I have to set footings below the frost line, I think it would be too much work. In which case I would go with crushed gravel and frame the floor. My concern about that method would be animals getting in and making their home between the floor joists. The existing shed, ready to fall down on it's own, currently has a family of skunks living under it.
What's the consensus on this? What would you do? I'm in the midwest and I believe the frost line is 36".