SHOULDERS
216.01 Description. This item shall consist of scarifying,
blading, shaping, and recompacting the existing bas e material; preparing the existing shoulder for surfacing; and stockpiling the excess material at the designated locations.
216.02 Construction Requirements. When the existing asphalt
surface consists of any type of ACHM, the layer(s) of ACHM shall be removed and disposed of as directed by the Engin eer. When the existing surface consists of one or more layers of Asphalt Surface Treatment, the Contractor shall have the option, wi th the approval of the Engineer, of either removing and disposing of t he surface material or scarifying, breaking down, and mixing t he surface material with the underlying base course material. The existing base course shall be scarified to a depth of 4" (100 mm) to 6" (150 mm) and recompacted to a density, as determined by AASH TO T 310, Direct Transmission, of not less than 95% of the ma ximum laboratory density obtained by AASHTO T 180, Method D. Quality control and acceptance testing for density shall be according to the provisions of Section 306 except the minimum freque ncy of acceptance testing shall be based on a lot size of 6,000 square yards (5,000 sq m). The final elevation of the base cour se on the shoulders shall allow for the surface course as shown on the plans. 186 216.03 Method of Measurement. Scarifying and Recompacting Shoulders will be measured by the square yard (squa re meter). The length will be measured to the nearest foot (meter) , horizontally and parallel to the centerline, and the width will be t he width of the finished base course shoulder. Width in excess of that shown on the plans or authorized by the Engineer will be exclude d from the measurement.
216.04 Basis of Payment. Work completed and accepted and
measured as provided above will be paid for at the contract unit price bid per square yard (square meter) for Scarif ying and Recompacting Shoulders, which price shall be full c ompensation for scarifying, blading, shaping, and recompacting base material; for performing quality control and acceptance sampling and testing; for loading, hauling, and stockpiling excess material; and for all labor, equipment, tools, and incidentals necessary to comp lete the work. Payment will be made under: Pay Item Pay Unit Shoulders Square Yard (Square Meter) This page intentionally blank. 188 DIVISION 300 BASES AND GRANULAR SURFACES