What is the capacity of a dump truck for a load of limestone? The first thing we need to know is the size of the dump truck. There are 12 cubic yard bodies, 15 cubic yard bodies, and 18 cubic yard bodies in the area I work in, plus dump trailers pulled by a tractor trailer truck that are over 30 cubic yard volumes. The standard dump trucks also come with single axle, double axle, and triple axle configurations, with more axles meaning a larger payload. The next question is whether the limestone is graded and washed, and would weigh in at about 2400 pounds per cubic yard, or crushed limestone that can weigh up to 2800 pounds per yard if it is damp. Without being too nit-picking, a normal load on a normal size two axle dump would be around 15 cubic yards if there are no weight restrictions on the route the driver is taking.