Orange County NC Website
Browse       Search
DocuSign Envelope ID: 313DA256 -1EDE- 4396- A716- 4C53B809027E <br />JERRY M. PASSMORE CENTER ADDITION AND RENOVATION <br />HILLSBOROUGH, NORTH CAROLINA <br />B. Place paving in consecutive strips not less than 10 feet (3 m) wide unless infill edge strips of a <br />lesser width are required. <br />After first strip has been placed and rolled, place succeeding strips and extend rolling to <br />overlap previous strips. Complete a section of asphalt base course before placing asphalt <br />surface course. <br />C. Promptly correct surface irregularities in paving course behind paver. Use suitable hand tools <br />to remove excess material forming high spots. Fill depressions with hot -mix asphalt to prevent <br />segregation of mix; use suitable hand tools to smooth surface. <br />3.7 JOINTS <br />A. Construct joints to ensure a continuous bond between adjoining paving sections. Construct <br />joints free of depressions, with same texture and smoothness as other sections of hot -mix <br />asphalt course. <br />1. Clean contact surfaces and apply tack coat to joints. <br />2. Offset longitudinal joints, in successive courses, a minimum of 6 inches (150 mm). <br />3. Offset transverse joints, in successive courses, a minimum of 24 inches (600 mm). <br />4. Construct transverse joints at each point where paver ends a day's work and resumes <br />work at a subsequent timeCompact joints as soon as hot -mix asphalt will bear roller <br />weight without excessive displacement. <br />5. Compact asphalt at joints to a density within 2 percent of specified course density. <br />3.8 COMPACTION <br />A. General: Begin compaction as soon as placed hot -mix paving will bear roller weight without <br />excessive displacement. Compact hot -mix paving with hot, hand tampers or with vibratory - <br />plate compactors in areas inaccessible to rollers. <br />Complete compaction before mix temperature cools to 185 deg F (85 deg Q. <br />B. Breakdown Rolling: Complete breakdown or initial rolling immediately after rolling joints and <br />outside edge. Examine surface immediately after breakdown rolling for indicated crown, grade, <br />and smoothness. Correct laydown and rolling operations to comply with requirements. <br />C. Intermediate Rolling: Begin intermediate rolling immediately after breakdown rolling while <br />hot -mix asphalt is still hot enough to achieve specified density. Continue rolling until hot -mix <br />asphalt course has been uniformly compacted to NCDOT requirements: <br />D. Finish Rolling: Finish roll paved surfaces to remove roller marks while hot -mix asphalt is still <br />warm. <br />E. Edge Shaping: While surface is being compacted and finished, trim edges of pavement to <br />proper alignment. Bevel edges while asphalt is still hot; compact thoroughly. <br />ASPHALT PAVING 321216-7 <br />