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G . Use tandem type steel wheel rollers . Rollers used for sealing shall weigh between 5 <br /> ' and 12 tons and those used for finish rolling shall weigh between 8 and 12 tons . <br /> H . Traffic rollers shall be self- propelled with at least seven smooth tread , low pressure <br /> tires . The tire pressure shall be maintained between 50 to 55 pounds . The rollers <br /> shall weigh between 6 to 10 tons . Wobble wheeled rollers shall not be used . <br /> I . Steel wheel rollers shall not exceed 3 mph and pneumatic tired rollers shall not <br /> exceed 5 mph . <br /> J . Perform finish rolling before the pavement temperature has dropped below 140 <br /> degrees Fahrenheit and while the material is still workable enough to remove roller <br /> marks . <br /> K . All irregularities or defects remaining after compaction shall be immediately <br /> removed and replaced with new material to provide a uniform textured surface that <br /> conforms to the required lines and grades . <br /> L . All areas which are inaccessible to rollers shall be compacted using hand tamps , <br /> 1 small vibratory tampers , or other acceptable means . Such areas shall include <br /> adjacent to curbs , gutters , and manholes . <br /> M . The edges of the pavement shall be straight , true , and clean , with no exceptions , <br /> and must meet the approval of the ENGINEER . All edges not meeting approval <br /> shall be saw cut to a straight , true , clean line by the CONTRACTOR at its expense . <br /> ' 3 . 4 FINISHED CROSS SECTION <br /> ' A . The finished surface shall not vary from the approved section on the Plans by more <br /> than 1 /4 inch from a 10 foot straight edge applied both parallel and perpendicular to <br /> the centerline of the pavement . The parallel measurement shall not be required if <br /> the road centerline is sloped to the grades shown on the Plans . The parallel <br /> measurement will be required only on flat (zero slope ) grades . Areas with improper <br /> ' cross sections shall be corrected to the proper cross section as specified herein . <br /> 3 . 5 PAVEMENT THICKNESS <br /> tA. The thickness of the pavement shall be determined from the length of cores , 1 - 1 /2 <br /> inches in diameter, taken at random points on the cross section and along the <br /> I roadway by a testing laboratory selected by the OWNER . Each core shall represent <br /> a section not longer than 200 feet. Actual locations shall be selected by the <br /> ENGINEER or his authorized representative . <br /> 1 Last revised 2/26/02 02520-3 EAST GIFFORD <br /> RIPublic worksweithmstormmeter Projects\Gifford East\Construction Contract\Technical Specifications\nnal specifications\Division <br /> 2\02520 - Asphaltic Concrete Pavement.doc <br />