That makes good sense, I would think that the gravel they will use, which I will confirm of course :-), should be 3/4" gravel, which doesnt move all that much, but doesn't compact and heave like 0-3/4" gravel which becomes essentially solid with a little water and compaction....
Any...
Hello all!
We are quite used to burying 3-4" duct under 4-5' of gravel, clean fill and pavement, usually under a standard street in Quebec, Canada. Our frost line is usually 4' under normal conditions, and we always cover those ducts/conduits with 3" of un-renforced concrete on each side, for...
