Hey folks,
I'm going to be building a new shop shortly, i'll be building the forms soon, and then soon after the concrete will come.
What i've read is even if I pour down 4" of compacted gravel, and then pour a 4" or so slab reinforced with mesh rebar, that eventually the grass & roots of the trees cut down etc will decompose and leave voids underneath and cause shifting and cracking in my slab. the building will be 16x26.
Now, if I have the compacted gravel of 4" underneath the concrete, will this still happen, and if it does, is it going to be a big deal? I don't mind a split or anything running through, I can smooth it off, etc later on in the years, I don't mind anything cosmetic so long as it doesn't affect the structural integrity of the building. Any advice here folks? Thanks!