511Prerolling Existing Pavement

511.01 Description. This work consists of prerolling existing pavement to determine

construction procedures required under other provisions of the contract.

511.02 Blank.

511.03 Construction Requirements.

511.03.1 Equipment. The roller shall consist of a si ngle-axle trailer-type roller or a

loaded truck having a single rear axle. The axle shall be loaded to a gross weight equal to or greater than the maximum legal load for a tandem axle on the highway on which the project is located but not to exceed 25 tons , and the Contractor sh all provide the means necessary for the Engineer to determine that these weight requirements are being met. The wheels shall be equipped with pneumatic tires capable of being inflated to a minimum inflation pressure of 100 psi. Tires may contain liquid if the Contractor so desires. The Contractor shall provide the Engineer with verification of gross axle weight and tire pressures. If a trailer type roller is used, it shall be towed by a rubber tired prime mover capable of maintaining a speed of two miles per hour. The prime mover with roller attached shall be capable of executing a 180° turn within a width of 30 feet.

511.03.2 Protection. Rolling shall be conducted so as to avoid damage to existing

structures and features designated to remain. Damage to such structures and features shall be repaired or the items replaced, in kind, at no additional cost to the State. The loaded roller shall not encroach upon bridge end pavement or, in the absence of bridge end pavement, within 20 feet, or greater distance when directed, of bridge abutments except under specific authority granted to cross a bridge. Live loadings on any bridge shall not exceed the statutory loading permitted on the bridge except the Department may consider an overload permit for individual cases. All pertinent information, including proposed frequency and size of loadings and type and exact location of bridges shall be furnished the Department in order that a comprehensive study may be made.