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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 />68 <br />1 1.Job Mix Formula Tolerances The constituents of the mixture at the time of <br />2 acceptance shall be within tolerance. The tolerance limits will be established as <br />3 follows: <br />4 For Asphalt Binder and Air Voids (Va), the acceptance limits are determined <br />5 by adding the tolerances below to the approved JMF values. These values <br />6 will also be the Upper Specification Limit (USL) and Lower Specification Limit <br />7 (LSL) required in Section 1-06.2(2)D2 <br />Property Non-Statistical Evaluation Commercial Evaluation <br />Asphalt Binder +/- 0.5%+/- 0.7% <br />Air Voids, Va 2.5% min. and 5.5% max N/A <br />8 For Aggregates in the mixture: <br />9 a. First, determine preliminary upper and lower acceptance limits by applying the <br />10 following tolerances to the approved JMF. <br />Aggregate Percent <br />Passing <br />Non-Statistical <br />Evaluation <br />Commercial <br />Evaluation <br />1, , ‰, and 3/8 sieves +/- 6%+/- 8% <br />No. 4 sieve +/-6%+/- 8% <br />No. 8 Sieve +/- 6%+/-8% <br />No. 200 sieve +/- 2.0%+/- 3.0% <br />11 b. Second, adjust the preliminary upper and lower acceptance limits determined <br />12 from step (a) the minimum amount necessary so that none of the aggregate <br />13 properties are outside the control points in Section 9-03.8(6). The resulting <br />14 values will be the upper and lower acceptance limits for aggregates, as well as <br />15 the USL and LSL required in Section 1-06.2(2)D2. <br />16 2. Job Mix Formula Adjustments An adjustment to the aggregate gradation or <br />17 asphalt binder content of the JMF requires approval of the Engineer. Adjustments <br />18 to the JMF will only be considered if the change produces material of equal or <br />19 better quality and may require the development of a new mix design if the <br />20 adjustment exceeds the amounts listed below. <br />21 a.Aggregates 2 percent for the aggregate passing the ]a( a( \a( ]a( _a( and <br />22 the No. 4 sieves, 1 percent for aggregate passing the No. 8 sieve, and 0.5 <br />23 percent for the aggregate passing the No. 200 sieve. The adjusted JMF shall <br />24 be within the range of the control points in Section 9-03.8(6). <br />25 b.Asphalt Binder Content The Engineer may order or approve changes to <br />26 asphalt binder content. The maximum adjustment from the approved mix <br />27 design for the asphalt binder content shall be 0.3 percent <br />28 <br />29 5-04.3(9)A Vacant <br />30 <br />31 5-04.3(9)B Vacant <br />32 <br />33 5-04.3(9)C Mixture Acceptance Nonstatistical Evaluation <br />34 HMA mixture which is accepted by Nonstatistical Evaluation will be evaluated by the <br />35 Contracting Agency by dividing the HMA tonnage into lots. <br />36 <br />37 5-04.3(9)C1 Mixture Nonstatistical Evaluation Lots and Sublots <br />38 A lot is represented by randomly selected samples of the same mix design that will be <br />39 tested for acceptance. A lot is defined as the total quantity of material or work produced <br />40 for each Job Mix Formula placed. Only one lot per JMF is expected. A sublot shall be