181-26 Exhibit A- Final Specifications_compressed.pdf

defined herein. The coring locations must be designated by a station and offset, and offsets are taken from the left edge of the pavement in the direction of travel within the lane lines. The Laboratory must disclose the contents of the HMA Core Sampling Plan with the Contractor to assist in the schedule of construction. The Laboratory will determine air voids of cores from the values for the maximum specific gravity of the mix and the bulk specific gravity of the core. The Laboratory will determine the maximum specific gravity of the mix according to NJDOT B-3 and AASHTO T 209, except that minimum sample size may be waived in order to use a 6-inch diameter core sample. The Laboratory will determine the bulk specific gravity of the compacted mixture by testing each core according to AASHTO T 166. The Laboratory will calculate the percent defective (PD) as the percentage of the lot outside the acceptable range of 2 percent air voids to 8 percent air voids. The acceptable quality limit is 15 percent defective. For lots in which PD > 15, the Department will assess a negative pay adjustment. The Laboratory will use and submit to the RE the DS8S-PD form provided on the Local Aid Website and verify manually the PD calculation. The Laboratory will calculate pay adjustments based on the following: 1. Sample Mean (X̅) and Standard Deviation (S) of the N Test Results (X1, X2,…, XN). 2. Quality Index (Q). 3. Percent Defective (PD). Using NJDOT ST for the appropriate sample size, the Laboratory will determine PDL and PDU associated with QL and QU, respectively. PD = PDL + PDU 4. Reduction Per Lot. Calculate the reduction per lot as specified in Table 401.03.07-3: Table 401.03.07-3 Reduction in Payment for Nonconformance to Air Void Requirements HELEN AVE., LAWRENCE AVE., FLORENCE PL., AND LOWELL AVE., IMPROVEMENTS PROJECT Page 43 of 76