Crush and Run Instead of Gravel Under Slab ...
Crusher run compacts easily with a bit if diligence, and is much easier on your buried plumbing. The reason to use rock is to provide a capillary break, so it's a good idea to top dress the 6" below the slab with a drainable fill. ... If it needs 6", I will comply, but at $675 per 22ton load, it hurts. :) ... Local water table conditions should ...
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