Calculating gravel tonnage, cubes, and sand and earth.
HighLOAD Permeable Pavement. The densities (pounds per square foot, or tons per cubic yard, sometimes called "pounds per foot" or "tons per cube") will also vary according to the season, the saturation levels (dampness) of the piles of medium when you purchase the mediums, the quality of the sieves used to sort the crusher runs, and so forth.