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CITY OF EVERETT WEST MARINE VIEW DRIVE/ALVERSON AND 41 ST ST/GRAND AVE <br />PEDESTRIAN IMPROVEMENTS <br />STATE FUND# HLP-PB15(032) <br />WO #3630 July 25, 2024 <br />73 <br />1 <br />2 The type of rollers to be used and their relative position in the compaction sequence shall <br />3 generally be the Contractors option, provided the specified densities are attained. Unless <br />4 the Engineer has approved otherwise, rollers shall only be operated in the static mode <br />5 when the internal temperature of the mix is less than 175F. Regardless of mix <br />6 temperature, a roller shall not be operated in a mode that results in checking or cracking <br />7 of the mat. Rollers shall only be operated in static mode on bridge decks. <br />8 <br />9 5-04.3(10)B HMA Compaction Cyclic Density <br />10 Low cyclic density areas are defined as spots or streaks in the pavement that are less <br />11 than 90 percent of the theoretical maximum density. At the Engineers discretion, the <br />12 Engineer may evaluate the HMA pavement for low cyclic density, and when doing so will <br />13 follow WSDOT SOP 733. A $500 Cyclic Density Price Adjustment will be assessed for <br />14 any 500-foot section with two or more density readings below 90 percent of the theoretical <br />15 maximum density. <br />16 <br />17 5-04.3(10)C Vacant <br />18 <br />19 5-04.3(10)D HMA Nonstatistical Compaction <br />20 <br />21 5-04.3(10)D1 HMA Nonstatistical Compaction Lots and Sublots <br />22 HMA compaction which is accepted by nonstatistical evaluation will be based on <br />23 acceptance testing performed by the Contracting Agency dividing the project into <br />24 compaction lots. <br />25 <br />26 A lot is represented by randomly selected samples of the same mix design that will be <br />27 tested for acceptance. A lot is defined as the total quantity of material or work produced <br />28 for each Job Mix Formula placed. Only one lot per JMF is expected. A sublot shall be <br />29 equal to one days production or 400 tons, whichever is less except that the final sublot <br />30 will be a minimum of 200 tons and may be increased to 800 tons. Testing for compaction <br />31 will be at the rate of 5 tests per sublot per WSDOT T 738. <br />32 <br />33 The sublot locations within each density lot will be determined by the Engineer. For a lot <br />34 in progress with a CPF less than 0.75, a new lot will begin at the Contractors request <br />35 after the Engineer is satisfied that material conforming to the Specifications can be <br />36 produced. <br />37 <br />38 HMA mixture accepted by commercial evaluation and HMA constructed under conditions <br />39 other than those listed above shall be compacted on the basis of a test point evaluation of <br />40 the compaction train. The test point evaluation shall be performed in accordance with <br />41 instructions from the Engineer. The number of passes with an approved compaction train, <br />42 required to attain the maximum test point density, shall be used on all subsequent paving. <br />43 <br />44 HMA for preleveling shall be thoroughly compacted. HMA that is used to prelevel wheel <br />45 ruts shall be compacted with a pneumatic tire roller unless otherwise approved by the <br />46 Engineer.