1160 -3 CONSTRUCTION METHODS Before use, furnish the Engineer detailed brochures, specifications and other manufacturer’s data that completely describe the performance criteria, installation and instructions for the crash cushion. Ensure that the crash cushion is rated for at least the same speed as the faci lity on which it will be used. The Contractor may provide a portable base for installation. When a portable base is used, provide one that is designed or approved by the manufacturer of the te mporary crash cushion. Install temporary crash cushions in accordance with the manufacturer's specifications. Use a yellow reflective end treatment to delineate the approach end of the crash cushion facing oncoming traffic. Repair any pavement damaged by t he installation or removal of a temporary crash cushion. Repair or replace , within 24 hours , any temporary crash cushion that becomes crushed or otherwise damaged to the point that it will not perform its intended purpose. If the cushion cannot be repaired within 24 hours, a truck mounted attenuator may be used for up to 72 hours if the spaceal lows; otherwise, all construction activities shall be suspended until the temporary crash cushion is repaired or replaced. Provide safe control of traffic until the temporary crash cushion has been repaired or replaced using approved methods. 1160 -4 MEASUREMENT AND PAYMENT Temporary Crash Cushion will be measured and paid as the actual number of crash cushions furnished, satisfactorily installed and accepted by the Engineer. Remove and Reset Temporary Crash Cushion will be measured and paid as the number of crash cushions moved from one location on the project to another location on the project. Measurement will be made by counting the number of crash cushion units moved during any one move. Where barrier units are moved more than one, each move will be measured separatel y. Whenever the Engineer directs the Contractor to move a crash cushion from an installed location to a stockpile either on or off the project and then back to another installed location, the complete move from the first installed location to the next ins talled location will be measured as 2 moves. Repair or replace damaged temporary crash cushions at no cost to the Department . Repair or replace damaged pavement at no cost to the Department. Payment will be made under: Pay Item Pay Unit Temporary Crash Cushion Each Remove and Reset Temporary Crash Cushion Each
TRUCK MOUNTED ATTENUATORS -1 DESCRIPTION Furnish, install, operate, maintain and relocate truck mounted attenuators (TMA). -2 MATERIALS Refer to Division 10. Item Section Truck Mounted Attenuators 1089 -9 Provide chassis mounted or trailer mounted TMAs that are listed on the NCDOT APL .