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3.5 DENSITY TESTS <br />A. Compaction tests shall be taken at the locations specified herein or at locations <br />selected by the ENGINEER or his authorized representative. <br />Be All tests shall be taken at 300 linear foot intervals (minimum) or a minimum of 5 <br />tests as requested by the Engineer. <br />3.6 TESTING THE FINISHED SURFACE <br />A. The finished surface of the base course shall be checked with a template cut to the <br />required cross section and with a 15 foot straight edge laid parallel to the centerline <br />of the road. Correct all irregularities greater than plus or minus 1/4 inch by scarifying <br />and removing or adding base, as may be required, after which the entire areas shall <br />be compacted as specified herein. <br />3.7 THICKNESS <br />A. After the base is complete, the Engineer or the soils laboratory shall take cores at <br />intervals of 300 linear feet or less. Completely fill said core holes with a sand <br />cement grout before the base is primed, or else completely fill said core holes with 3 <br />or more equal layers of base material and adequately compact each layer using a <br />short steel rod and hammer. Where the base is more than 1/2 inch deficient in <br />thickness, correct such areas by scarifying and adding limerock. Scarify to a depth <br />of at least 3 inches and add more base material for a distance of 100 feet in each <br />direction from the edge of the deficient area, so that after proper compacting the <br />thickness will conform to the DRAWINGS. <br />3.8 PROTECTION AND MAINTENANCE <br />A. "Hard -plane" the base with a blade grader immediately prior to the applications of <br />prime coat to remove thin -glazed or cemented surfaces, leaving a granular or <br />porous condition that will allow free penetration of the prime material. Remove all <br />materials planed from the base area. <br />Be Protect the base in accordance with Section 02518, "Prime and Tack Coats for <br />Base Courses". This surface shall have a minimum curing time of one week before <br />the wearing course is applied. <br />Co Maintain the true crown and grade with no rutting or other distortion until the surface <br />course is applied. <br />+ + END OF SECTION + + <br />02511-3 02511 — Base Course <br />