The volume of each truck bed must be obtained because aggregate is typically paid by the number of cubic yards placed on the roadway. Each truck is measured, and the number of full loads placed on the roadway is counted to arrive at the pay quantity of aggregate.

Ideally, all trucks used on the project should have the same capacity to easily compute the volume of aggregate placed on the roadway. There is no particular truck size that is best.

The length (L), width (W), and height (H) of the inside of the truck bed should be measured to the nearest 0.05 feet as shown in the example below. These three measurements are multiplied to obtain the volume in cubic feet. This product is then converted to cubic yards by dividing by 27 as shown in the following example.

Volume of Truck Bed (V):

Equation 7-1.

Note: round 12.08 CY to 12 CY.