Trinity Contractors, Inc 3/1/2017

1 1 2 The Contracting Agency may, at its sole discretion, evaluate any HMA for 3 compliance with the Cyclic Density requirements of Section 5-04.3(10)B. I 4 5 5-04.3(10)A HMA Compaction — General Compaction Requirements 6 Immediately after the HMA has been spread and struck off, and after 7 surface irregularities have been adjusted, thoroughly and uniformly 8 compact the mix. The completed course shall be free from ridges, ruts, 9 humps, depressions, objectionable marks, and irregularities and shall 10 conform to the line, grade, and cross-section shown in the Plans. If 11 necessary, alter the JMF in accordance with Section 9-03.8(7) to achieve 12 desired results. 13 14 Compact the mix when it is in the proper condition so that no undue 15 displacement, cracking, or shoving occurs. Compact areas inaccessible to 16 large compaction equipment by mechanical or hand tampers. Remove 17 HMA that becomes loose, broken, contaminated, shows an excess or 18 deficiency of asphalt, or is in any way defective. Replace the removed 19 material with new HMA, and compact it immediately to conform to the 20 surrounding area. 21 22 The type of rollers to be used and their relative position in the compaction 23 sequence shall generally be the Contractor's option, provided the 24 specified densities are attained. An exception shall be that pneumatic tired 25 rollers shall be used for compaction of the wearing course beginning 26 October 1st of any year through March 31st of the following year. Coverage 27 with a steel wheel roller may precede pneumatic tired rolling. Unless 28 otherwise approved by the Engineer, operate rollers in the static mode 29 when the internal temperature of the mix is less than 175°F. Regardless of 30 mix temperature, do not operate a roller in a mode that results in checking 31 or cracking of the mat. 32 i 33 On bridge decks and on the five feet of roadway approach immediately 34 adjacent to the end of bridge/back of pavement seat, operate rollers in 35 static mode only. I 36 37 5-04.3(10)B HMA Compaction — Cyclic Density 38 Low cyclic density areas are defined as spots or streaks in the pavement 39 that are less than 90 percent of the theoretical maximum density. At the 40 Engineer's discretion, the Engineer may evaluate the HMA pavement for 41 low cyclic density, and when doing so will follow WSDOT SOP 733. A 42 $500 Cyclic Density Price Adjustment will be assessed for any 500-foot 43 section with two or more density readings below 90 percent of the 44 theoretical maximum density. 45 46 5-04.3(10)C HMA Compaction Acceptance — Statistical Evaluation 47 HMA compaction which is accepted by Statistical Evaluation will be based ii 48 on acceptance testing performed by the Contracting Agency, and 49 statistical analysis of those acceptance tests results. This will result in a 50 Compaction Price Adjustment. 51 I AMENDMENTS TO THE 2016 STANDARD SPECIFICATIONS BOOK Revised: 8/1/16