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Edgewater Creek Bridge Replacement November 2023 112 HMA for preleveling shall be thoroughly compacted. HMA that is used for preleveling 1 wheel rutting shall be compacted with a pneumatic tire roller unless otherwise approved 2 by the Engineer. 3 4 Test Results 5 For a sublot that has been tested with a nuclear density gauge that did not meet the 6 minimum of 92 percent of the reference maximum density in a compaction lot with a CPF 7 below 1.00 and thus subject to a price reduction or rejection, the Contractor may request 8 that a core be used for determination of the relative density of the sublot. The relative 9 density of the core will replace the relative density determined by the nuclear density 10 gauge for the sublot and will be used for calculation of the CPF and acceptance of HMA 11 compaction lot. 12 13 When cores are taken by the Contracting Agency at the request of the Contractor, they 14 shall be requested by noon of the next workday after the test results for the sublot have 15 been provided or made available to the Contractor. Core locations shall be outside of 16 wheel paths and as determined by the Engineer. Traffic control shall be provided by the 17 Contractor as requested by the Engineer. Failure by the Contractor to provide the 18 requested traffic control will result in forfeiture of the request for cores. When the CPF for 19 the lot based on the results of the HMA cores is less than 1.00, the cost for the coring will 20 be deducted from any monies due or that may become due the Contractor under the 21 Contract at the rate of $200 per core and the Contractor shall pay for the cost of the 22 traffic control. 23 24 5-04.3(10)A HMA Compaction – General Compaction Requirements 25 Compaction shall take place when the mixture is in the proper condition so that no undue 26 displacement, cracking, or shoving occurs. Areas inaccessible to large compaction 27 equipment shall be compacted by other mechanical means. Any HMA that becomes 28 loose, broken, contaminated, shows an excess or deficiency of asphalt, or is in any way 29 defective, shall be removed and replaced with new hot mix that shall be immediately 30 compacted to conform to the surrounding area. 31 32 The type of rollers to be used and their relative position in the compaction sequence 33 shall generally be the Contractor’s option, provided the specified densities are attained. 34 Unless the Engineer has approved otherwise, rollers shall only be operated in the static 35 mode when the internal temperature of the mix is less than 175°F. Regardless of mix 36 temperature, a roller shall not be operated in a mode that results in checking or cracking 37 of the mat. Rollers shall only be operated in static mode on bridge decks. 38 39 5-04.3(10)B HMA Compaction – Cyclic Density 40 Low cyclic density areas are defined as spots or streaks in the pavement that are less 41 than 90 percent of the theoretical maximum density. At the Engineer’s discretion, the 42 Engineer may evaluate the HMA pavement for low cyclic density, and when doing so will 43 follow WSDOT SOP 733. A $500 Cyclic Density Price Adjustment will be assessed for 44 any 500-foot section with two or more density readings below 90 percent of the 45 theoretical maximum density. 46 47 5-04.3(10)C Vacant 48