Red clay weighs approximately 2,200 pounds per cubic yard. In other words, a cubic yard of red clay—enough fill to fill a pickup truck—weighs almost 1 ton (2,000 pounds). In comparison, a cubic yard of moist garden topsoil may weigh about 2,500 to 2,700 pounds, while a cubic yard of sand weighs in the range of 2,600 to 3,000 pounds.