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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 />