ton of rock per cubic yard
River Rock (all) = 1.325 tons (2650 lbs.) per cubic yard. Granite (all) = 1.325 tons (2650 lbs.) per cubic yard. Marble (all) = 1.35 tons (2700 lbs.) per cubic yard Cubic Footage Per Ton Of Building Stone & Flagstone. *15 cubic feet per ton, or 133 lbs.per cubic foot Note: The true cubic footage weights are 145-160 pounds per cubic foot, for solid unbroken stone, or about 13 cubic feet per ton on average.iver Rock (all) = 1.325 tons (2650 lbs.) per cubic yard. Granite (all) = 1.325 tons (2650 lbs.) per cubic yard. Marble (all) = 1.35 tons (2700 lbs.) per cubic yard Cubic Footage Per Ton Of Building Stone & Flagstone. *15 cubic feet per ton, or 133 lbs.
20 tons X 2000 pounds per ton = 40,000 pounds. 40,000 pounds / 2700 pounds per cubic yard = 14.29 cubic yards. One 20-ton truckload of crushed stone will yield 14-15 cubic yards of crushed stone. Again, this is not an exact measurement and a round figure is often close enough for these calculations.he weight of crushed stone in pounds per cubic yards and tons per cubic yards are approximate measures that assume all of the same material weighs the same.