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2025 FEDERAL OVERLAY, BROADWAY – CALIFORNIA ST TO 18TH ST SPECIAL PROVISIONS <br />FEDERAL AID# STBGUL-2715(012); COE PW# 3841 SP-78 May 6, 2025 <br /> <br /> wearing course 0.30 feet 1 <br /> other courses 0.35 feet 2 <br />HMA Class ⅜” 0.15 feet 3 <br /> 4 <br />On areas where irregularities or unavoidable obstacles make the use of mechanical 5 <br />spreading and finishing equipment impractical, the paving may be done with other 6 <br />equipment or by hand. 7 <br /> 8 <br />When more than one JMF is being utilized to produce HMA, the material produced for 9 <br />each JMF shall be placed by separate spreading and compacting equipment. The 10 <br />intermingling of HMA produced from more than one JMF is prohibited. Each strip of HMA 11 <br />placed during a work shift shall conform to a single JMF established for the class of HMA 12 <br />specified unless there is a need to make an adjustment in the JMF. 13 <br /> 14 <br />5-04.3(8) Aggregate Acceptance Prior to Incorporation in HMA 15 <br />For HMA accepted by nonstatistical evaluation, the aggregate properties of sand 16 <br />equivalent, uncompacted void content, and fracture will be evaluated in accordance with 17 <br />Section 3-04. Sampling and testing of aggregates for HMA accepted by commercial 18 <br />evaluation will be at the option of the Engineer. 19 <br /> 20 <br />5-04.3(9) HMA Mixture Acceptance 21 <br />Acceptance of HMA shall be as provided under nonstatistical, or commercial evaluation. 22 <br /> 23 <br />Nonstatistical evaluation will be used for the acceptance of HMA unless Commercial 24 <br />Evaluation is specified. 25 <br /> 26 <br />Commercial evaluation will be used for Commercial HMA and for other classes of HMA 27 <br />in the following applications: sidewalks, road approaches, ditches, slopes, paths, trails, 28 <br />gores, prelevel, temporary pavement, and pavement repair. Other nonstructural 29 <br />applications of HMA accepted by commercial evaluation shall be as approved by the 30 <br />Engineer. Sampling and testing of HMA accepted by commercial evaluation will be at the 31 <br />option of the Engineer. 32 <br /> 33 <br />The mix design will be the initial JMF for the class of HMA. The Contractor may request a 34 <br />change in the JMF. Any adjustments to the JMF will require the approval of the Engineer 35 <br />and may be made in accordance with this section. 36 <br /> 37 <br />HMA Tolerances and Adjustments 38 <br />1. Job Mix Formula Tolerances – The constituents of the mixture at the time of 39 <br />acceptance shall be within tolerance. The tolerance limits will be established as 40 <br />follows: 41 <br /> 42 <br />For Asphalt Binder and Air Voids (Va), the acceptance limits are determined 43 <br />by adding the tolerances below to the approved JMF values. These values 44 <br />will also be the Upper Specification Limit (USL) and Lower Specification Limit 45 <br />(LSL) required in Section 1-06.2(2)D2 46