Orange County NC Website
<br />Attendant Booth Additions 32 12 16 - 5 <br />Orange County, North Carolina AUGUST 20205 <br />TRC PN: 670493 <br /> <br />5. Compact joints as soon as hot-mix asphalt will bear roller weight without excessive <br />displacement. <br />6. Compact asphalt at joints to a density within 2 percent of specified course density. <br />3.7 COMPACTION <br />A. General: Begin compaction as soon as placed hot-mix paving will bear roller weight <br />without excessive displacement. Compact hot-mix paving with hot, hand tampers or <br />vibratory-plate compactors in areas inaccessible to rollers. <br />1. Complete compaction before mix temperature cools to 185 deg F. <br /> <br />B. Breakdown Rolling: Accomplish breakdown or initial rolling immediately after rolling <br />joints and outside edge. Examine surface immediately after breakdown rolling for <br />indicated crown, grade, and smoothness. Repair surfaces by loosening displaced <br />material, filling with hot-mix asphalt, and rerolling to required elevations. <br />C. Intermediate Rolling: Begin intermediate rolling immediately after breakdown rolling, <br />while hot-mix asphalt is still hot enough to achieve specified density. Continue rolling <br />until hot-mix asphalt course has been uniformly compacted to density meeting DOT <br />requirements. <br />D. Finish Rolling: Finish roll paved surfaces to remove roller marks while hot -mix asphalt <br />is still warm. <br />E. Edge Shaping: While surface is being compacted and finished, trim edges of <br />pavement to proper alignment. Bevel edges while still hot, with back of rake or smooth <br />iron. Compact thoroughly using tamper or other satisfactory method. <br />F. Repairs: Remove paved areas that are defective or contaminated with foreign <br />materials. Remove paving course over area affected and replace with fresh, hot -mix <br />asphalt. Compact by rolling to specified density and surface smoothness. <br />G. Protection: After final rolling, do not permit vehicular traffic on pavement until it has <br />cooled and hardened. <br />H. Erect barricades to protect paving from traffic until mixture has cooled enough not to <br />become marked. <br />3.8 INSTALLATION TOLERANCES <br />A. Thickness: Compact each course to produce, as a minimum, the thickness indicated <br />within the following tolerances: <br />1. Base Course: Plus 1/2 inch, no minus. <br />2. Surface Course: Plus 1/4 inch, no minus. <br />B. Surface Smoothness: Compact each course to produce a surface smoothness within <br />the following tolerances as determined by using a 10-foot straightedge applied <br />transversely or longitudinally to paved areas: <br />1. Base Course: 1/4 inch. <br />2. Surface Course: 1/8 inch. <br />3. Crowned Surfaces: Test with crowned template centered and at right angle to <br />crown. Maximum allowable variance from template is 1/4 inch. <br />Docusign Envelope ID: 34F94CE0-2CE8-49C5-B7C4-6B696F8E23C3