Crushed Stone and Gravel Sizes, Chart and Grades
Crushed stone #10 (Stone dust, rock, or gravel screenings): ⅛″ or smaller. Crushed stones #10, ... Amount of rock needed per cubic yard = (Length x width x Thickness) divided by 27 (conversion factor of cubic yards to cubic feet). If you will be working in tons, divide (Length x width x Thickness) in feet by 21.6 (cubic feet that make …