1999-177B - Laserfiche WebLink

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D. If cracks or checks appear in the mase which would impair the stntctural hacgrity of the base in the opinion of the Engineer, the Contractor shall remove the cracks or checks by rescarifying, reshaping. refilling will, coquina shell where necessary, and reconipacting at no cost to (lie Owner. E. The finished coquina shell base shall be checked for thickness at intervals of not mgre than 300 feel. Any areas which are less than 5 112 inches in thickness shall be corrected by scarifying and adding rack. The scarifying shall extend for 50 feet either side of the deficient area. Areas which are less than 112 incl, deficient in thickness shall be corrected if tate Engineer determines that the area is extensive or may adversely affect the quality of the finished work. fn. PRIME COAT A. The prime coat shall be a rapid curing liquid cut back asphalt equal or equivalent to RC -70 or RC -250 at the Contractor'so tion, asid conforming to Sections 300 and 916-2 of the 19$5 Edition of site torida D.O.T. Standard Specifications for Road and Bridge Construction. B. The surface of the base material shall be cleaned after final compaction and (lie moisture content of (lie base shall not exceed 90 percent of the optimum moisture before the prime coat is applied. The prime coat :shall he applied uniforttily with a pressure distributor. The entire length of the spray bar shall be set at [lie height above the surface recommended by the Manufacturer for even distribution. The prime coat shall be applied to the finished base course at [he rale of 0.15 gallons per square yard at a temperature between 1001 F. to 1501 F. The prime coat shall be applied such that a period of no longer than two (2) hours lapse prior to application of [lie asphaltic concrete wearing course, unless [lie pritne coat is covered with sand or screenings as outlined in Section: 300-6.5 of the 1986 Edition of the Florida D.O.T. Spec iifications. 7. TESTING A. The inaximwn density and optimum moisture shall be determined in accordance with the Modified Proctor Test procedures of ASTM -D1557 or AAS11TO-T18O {Method 1)). The percentage compaction and in-place density shall be determined according to procedures of ASTM -1)2167 "Test for Density of Soil In -Place by (lie Rubber Balloon Method" or the nuclear inelhod ASTM- 02922. Its general, one Modified Proctor `fest per 3016 lineal feet of roadwork shall be performed on a representative sample of base material from locatinn(s) designated by the Engineer. inti -phare ,tensity testing shall be performed at the rate of one test per 300 lineal feet of roadwork at comparable locations unless otherwise specified by (lie Engineer.. 02304.2