>>63936960
decomposed granite. basically crushed up rock with specific sizes mixed together after they are screened. The sharp broken edges and fines (smallest bits) help it all lock together into a tight mass under compaction so it doesnt move. DG is a generic term we use in the SW, but its used for road base and under footings and foundations, under anything masonry really to provide a stable base. It drains water pretty freely as well and doesnt shrink and swell like a typical soil would. It basically just looks like sand or dirt, but its special engineered dirt. No organic materials to break down and create voids either.

t.I like rocks and live in arizona