Convert cubic yards to cubic feet. A cubic yard is equal to 27 cubic feet.
Multiply 27 by 145, which is the weight of asphalt in pounds per cubic foot given by the NAPA. Twenty-seven multiplied by 145 equals 3,915, so asphalt weighs 3,915 pounds per cubic yard.
Multiply that number by the amount of entire cubic yards to calculate the total weight. For example, if the volume encompasses 50 cubic yards, the total weight of the asphalt is 195,750 pounds.