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9/2/2020 <br /> <br />32 12 16 ASPHALT PAVING Page 3 of 6 <br />B. Proof-roll subgrade below pavements with heavy pneumatic-tired equipment to identify soft <br />pockets and areas of excess yielding. Do not proof-roll wet or saturated subgrades. <br />1. Completely proof-roll subgrade in one direction, repeating proof-rolling in direction <br />perpendicular to first direction. Limit vehicle speed to 3 mph. <br />2. Proof roll with a loaded 10-wheel, tandem-axle dump truck weighing not less than 15 tons. <br />3. Excavate soft spots, unsatisfactory soils, and areas of excessive pumping or rutting, as <br />determined by Architect, and replace with compacted backfill or fill as directed. <br />C. Proceed with paving only after unsatisfactory conditions have been corrected. <br />D. Verify that utilities, traffic loop detectors, and other items requiring a cut and installation beneath <br />the asphalt surface have been completed and that asphalt surface has been repaired flush with the <br />adjacent asphalt prior to beginning installation of the Imprinted asphalt. <br />3.2 COLD MILLING <br />A. Clean existing pavement surface of loose and deleterious material immediately before cold <br />milling. Remove existing asphalt pavement by cold milling to grades and cross sections indicated. <br />1. Mill to a depth of 0 to 3 inches or as indicated in the Project plan sheets. <br />2. Mill to a uniform finished surface free of excessive gouges, grooves, and ridges. <br />3. Control rate of milling to prevent tearing of existing asphalt course. <br />4. Repair or replace curbs, manholes, and other construction damaged during cold milling. <br />5. Excavate and trim unbound-aggregate base course, if encountered, and keep material <br />separate from milled hot-mix asphalt. <br />6. Patch surface depressions deeper than 1 inchafter milling, before wearing course is laid. <br />7. Keep milled pavement surface free of loose material and dust. <br />8. Do not allow milled materials to accumulate on-site. <br />3.3 SURFACE PREPARATION <br />A. General: Immediately before placing asphalt materials, remove loose and deleterious material <br />from substrate surfaces. Ensure that prepared subgrade is ready to receive paving. <br />B. Per NCDOT 2018 Asphalt QMS Manual <br />3.4 PLACING HOT-MIX ASPHALT <br />A. Machine place hot-mix asphalt on prepared surface, spread uniformly, and strike off. Place asphalt <br />mix by hand in areas inaccessible to equipment in a manner that prevents segregation of mix. <br />Place each course to required grade, cross section, and thickness when compacted. <br />B. Per NCDOT 2018 Asphalt QMS manual <br />C. Promptly correct surface irregularities in paving course behind paver. Use suitable hand tools to <br />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 />DocuSign Envelope ID: 7D9ACD4F-8F6C-42B6-9ADB-C60032DB6D03