11-12 Pay Item Pay Unit
Cones Each
1140-1 Description
Furnish, install, relocate, maintain and remove sequential flashing warning lights on drums used for the merging tapers of night time lane closures . 1140 -2 MATERIALS Refer to Division 10. Item Section Sequential Flashing Warning Lights 1089 -4 Provide sequential flashing warning lights listed on the NCDOT APL . 1140 -3 CONSTRUCTION METHODS Use sequential flashing warning lights on all multilane roadways with speed limits of 55 mph or greater . These lights shall flash sequentially beginning with the first light and continuing until the final light. The sequential flashing warning lights shall automatically flash in sequence when placed on the drums that form the merging taper . The number of lights used in the drum taper shall equal the number of drums used in the taper . Drums are the only channelizing device allowed to mount sequential flashing warning lights . The sequential flashing warning lights shall automatically sequence when placed in line in an open area with a distance between lights of 10 to 100 feet . If one light fails, the flashing sequence shall continue. If more than 1 light fails, all of the lights are to be automatically turned to the “off” mode. Non- sequential flashing is prohibited. When lane closures are not in effect, the s equential flashing warning lights shall be deactivated . 1140 -4 MAINTENANCE Periodically inspect s equential flashing warning lights . Replace any s equential flashing warning lights as needed. 1140 -5 MEASUREMENT AND PAYMENT Sequential Flashing Warning Light s will be measured and paid as the maximum number of sequential flashing warning lights satisfactorily installed and properly functioning at any one time during the life of the project . This includes all materials and labor to install, maintain and remove all the Sequential Flashing Warning Lights . Payment will be made under: Pay Item Pay Unit Sequential Flashing Warning Lights Each