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ST. BARBARA CATHOLIC SCHOOL TASK 2 75-24272-01 DIOCESE OF ORANGE SEPTEMBER 12TH, 2024 SANTA ANA, CA BID & PERMIT SET ASPHALT PAVING 321216 - 8 F. Two Layer Method: The leveling course shall be installed to elevations which will allow the future placement of a wearing (surface) course no thinner than 1-1/2 inches. Prior to placing the wearing (surface) course, repair all areas damaged during construction use, thoroughly clean the leveling course of all loose material and place a tack coat pursuant to paragraph 3.4 D. herein. 3.6 JOINTS A. Construct joints to ensure continuous bond between adjoining paving sections. Construct joints free of depressions with same texture and smoothness as other sections of hot-mix asphalt course. 1. Clean contact surfaces and apply tack coat. 2. Offset longitudinal joints in successive courses a minimum of 6 inches (150 mm). 3. Offset transverse joints in successive courses a minimum of 24 inches (600 mm). 4. Construct transverse joints by bulkhead method or sawed vertical face method as described in AI's "The Asphalt Handbook." 5. Compact joints as soon as hot-mix asphalt will bear roller weight without excessive displacement. 6. Compact asphalt at joints to a density within 2 percent of specified course density. 3.7 COMPACTION A. General: Begin compaction as soon as placed hot-mix paving will bear roller weight without excessive displacement. Compact hot-mix paving with hot, hand tampers or vibratory-plate compactors in areas inaccessible to rollers. 1. Complete compaction before mix temperature cools to 185 deg F (85 deg C). B. Breakdown Rolling: Accomplish breakdown or initial rolling immediately after rolling joints and outside edge. Examine surface immediately after breakdown rolling for indicated crown, grade, and smoothness. Repair surfaces by loosening displaced material, filling with hot -mix asphalt, and rerolling to required elevations. C. Intermediate Rolling: Begin intermediate rolling immediately after breakdown rolling, while hot-mix asphalt is still hot enough to achieve specified density. Continue rolling until hot -mix asphalt course has been uniformly compacted to at least 95 percent of the Hveem density (ASTM D 2726-05a). D. Finish Rolling: Finish roll paved surfaces to remove roller marks while hot-mix asphalt is still warm. E. Edge Shaping: While surface is being compacted and finished, trim edges of pavement to proper alignment. Bevel edges while still hot, with back of rake or smooth iron. Compact thoroughly using tamper or other satisfactory method. F. Repairs: Remove paved areas that are defective or contaminated with foreign materials. Remove paving course over area affected and replace with fresh, hot-mix asphalt, with a thickness one inch greater than the existing, and to match existing finish surface grades such that no local ponding of water will result. Compact by rolling to specified density and surface smoothness.