Manufacturers publish the gross weights of their product with water and wet sand as ballast. If either of these materials is used and the ballast tanks are full, the inspector can safely certify whether or not it meets the weight requirements.

If, however, the contractor uses another material, such as aggregate for ballast, it may be difficult to determine if the rollers meet the weight requirements. When in doubt, the contractor should be required to have the rollers weighed. A weight ticket should be obtained with a certified vehicle weight and included in the project folder.