Description: The work consists of furnishing all materials, equipment and labor necessary for the surface preparation and application of a single chip seal. This work shall conform to the requirements of Section 505 of the Michigan Department of Transportation 2020 Standard Specification for Construction except as modified herein. Equipment: All equipment must meet the requirements under Section 505 of the Michigan Department of Transportation 2020 Standard Specifications for Construction, except as modified herein: Pressure Distributor: The pressure distributor shall have a computerized application rate and speed control device interconnected with the liquid asphalt pump such that the specified application rate will be supplied at any speed. This control shall have a radar ground sensing device that controls the application rate regardless of ground speed or spray bar width. The pressure distributor shall be capable of maintaining the asphalt at the specified temperature. The spray bar nozzles shall produce a uniform fan spray, and the shutoff shall be instantaneous with no dripping. Each pressure distributor shall be capable of maintaining the specified rate of application within +/- 0.015 gallons per square yard for each load. Compacting Equipment: Use a sufficient number of pneumatic-tired rollers weighing not less than 8 tons each. Broom/Sweeper: The use of a rotary-powered broom is required to remove the loose material from the surface to be treated and for removing loose aggregate after the work has been completed.
