Laserfiche WebLink
CITY OF EVERETT SPECIAL PROVISIONS <br /> <br />Beverly Lake Water Quality Retrofit Division 5 – SURFACE TREATMENTS August 2023 <br /> <br />AND PAVEMENTS <br />WO No. – UP3745 SP - 168 <br />also be the Upper Specification Limit (USL) and Lower Specification Limit (LSL) <br />required in Section 1-06.2(2)D2. <br />Property Non-Statistical <br />Evaluation <br />Commercial <br />Evaluation <br />Asphalt <br />Binder <br />+/- 0.5% +/- 0.7% <br />Air Voids, Va 2.5% min. and 5.5% <br />max <br />N/A <br />For Aggregates in the mixture: <br />a. First, determine preliminary upper and lower acceptance limits by applying the <br />following tolerances to the approved JMF. <br />Aggregate Percent <br />Passing <br />Non-Statistical <br />Evaluation <br />Commercial <br />Evaluation <br />1”, ¾”, ½”, 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 />b. Second, adjust the preliminary upper and lower acceptance limits determined <br />from step (a) the minimum amount necessary so that none of the aggregate <br />properties are outside the control points in Section 9-03.8(6). The resulting <br />values will be the upper and lower acceptance limits for aggregates, as well <br />as the USL and LSL required in Section 1-06.2(2)D2. <br />2. Job Mix Formula Adjustments – An adjustment to the aggregate <br />gradation or asphalt binder content of the JMF requires Engineer’s <br />approval. Adjustments to the JMF will only be considered if the change <br />produces material of equal or better quality and may require the <br />development of a new mix design if the adjustment exceeds the amounts <br />listed below. <br />a. Aggregates – 2 percent for the aggregate passing the 1½″, 1″, <br />¾″, ½″, ⅜″, and the No. 4 sieves, 1 percent for aggregate passing <br />the No. 8 sieve, and 0.5 percent for the aggregate passing the <br />No. 200 sieve. Provide the adjusted JMF within the range of the <br />control points in Section 9-03.8(6). <br />b. Asphalt Binder Content – The Engineer may order or approve <br />changes to asphalt binder content. The maximum adjustment <br />from the approved mix design for the asphalt binder content is <br />0.3 percent. <br />5-04.3(9)A Vacant <br />5-04.3(9)B Vacant <br />5-04.3(9)C Mixture Acceptance – Nonstatistical Evaluation <br />The City will evaluate the HMA mixture accepted by Nonstatistical Evaluation <br />by dividing the HMA tonnage into lots. <br />5-04.3(9)C1 Mixture Nonstatistical Evaluation – Lots and Sublots <br />A lot is represented by randomly selected samples of the same mix <br />design being tested for acceptance. A lot is defined as the total quantity