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<br /> <br />02574 - 3/9 <br />F. Mineral Aggregate for Slurry Seal Coat shall consist of screened sand or limestone <br />screenings or gray granite screenings or a mixture of sand and screenings plus not <br />less than 3%, by weight, of Type I or Type II Portland cement. <br />PART 3 - EXECUTION <br />3.01 INSTALLATION, GENERAL <br />A. Permanent pavement repair shall be full roadway width overlay, in accordance with <br />the details shown in the Standard Details herein, with edges straight and parallel and <br />patches rectangular in plan. Replace any paving, beyond the limits shown in the <br />details and as called for in the Specifications, as required. Where trenches are <br />located out of the existing pavement and damage occurs to the pavement, that <br />pavement shall also be replaced by the Contractor at his own expense. <br />B. Pavement markings removed or obliterated by the Contractor's operations shall be <br />promptly replaced, in kind, to the satisfaction of the City, or other authority having <br />jurisdiction over the work area. <br />C. All equipment necessary for construction shall be on the job site in first class working <br />condition. Spilling or dropping of petroleum products is prohibited and all defective <br />equipment shall be removed or replaced immediately. The Contractor shall be <br />subject to all FDEP (Florida Department of Environmental Protection) and local <br />regulations and clean up requirements. <br />D. The percentages of maximum density for subgrade and limerock base specified <br />herein are minimum. Greater percentages of maximum density shall be obtained, if <br />so required, by the governing authority having jurisdiction over the work location. <br />E. Asphaltic concrete mixtures shall be obtained only from plants which comply with the <br />requirements of D.O.T. Specifications, Section 320 as applicable, using materials <br />specified herein, and producing the specified mixture. General construction <br />requirements for all hot bituminous mixtures specified herein shall conform to D.O.T. <br />Specifications, Section 330, as applicable. <br />F. Asphaltic concrete shall be laid only where the surface to be covered is intact, firm, <br />cured and dry, and only when weather conditions are suitable. The temperature of <br />the mixture at the time of spreading shall be within limits of Florida D.O.T. <br />specifications or within 25 degrees of the design mix temperature. No mixture shall <br />be spread when the air temperature is less than 40 degrees Fahrenheit. <br />G. Any mixture caught in transit by a sudden rain may be laid at the Contractor's risk, if <br />the base is in suitable condition. Under no circumstances shall asphaltic material be <br />placed while rain is falling, or when there is water on the area to be paved. <br />H. Subgrade: Roadway subgrades shall be stabilized to the minimum depth shown on <br />the Drawings to a Limerock Bearing Ratio of not less than 40. Stabilizing shall be <br />Type B as defined in Section 160 of the DOT Specifications. Stabilization may <br />require the addition and thorough mixing in of crushed limerock, course limerock <br />screenings, or any other stabilizing material acceptable to the City. The stabilizing <br />material shall be applied in such quantity that, after mixing and blending, the <br />subgrade will have a LBR of not less than 40. Stabilizing material shall be mixed or <br />blended in the subgrade material by plowing, scarifying, disking, harrowing, blading <br />and mixing with rotary tillers until the mixed materials are of uniform bearing value <br />throughout the width and depth of the layer being processed.