Crushed Stone Description and Uses (Pennsylvania …
Quarry/Crusher Run x Fill material, roadway sub-grade, compactable, some clay content possible R-3 Rip Rap x 3" 6" Ballast to fill gabion baskets, stabilize earth & prevent erosion R-4 Rip Rap x 6" 12" Stabilize earth to prevent erosion R-5 Rip Rap x 9" 18" Stabilize earth to prevent erosion R-6 Rip Rap x 12" 24" Stabilize earth to prevent erosion