Often uses #57 stone (1 inch) to bridge the gap between the large base and the fine top. Surface Layer (Top):
Pea Gravel or Marble Chips . These are attractive but rounded, meaning they can shift and migrate easily unless held in place by stabilization grids or edging. how to buy gravel for driveway
#411 or Crusher Run . This is a mix of 3/4-inch stone and "fines" (stone dust) that compacts into a semi-solid, smooth surface. Often uses #57 stone (1 inch) to bridge
3/4" CA7 Limestone . Its sharp edges provide the necessary traction for vehicles climbing a grade. 2. Calculate How Much to Buy how to buy gravel for driveway