181-26 Exhibit A- Final Specifications_compressed.pdf

NJDOT TEST METHODS NJDOT R-1 – DETERMINING RIDE QUALITY OF PAVEMENT SURFACES B. Apparatus. PART B IS CHANGED TO: Use the following apparatus: 1. Class 1 IPS that meets the requirements of ASTM E 950, Sections 4.0, 5.0 and 6.0 of AASHTO M 328, and the following: a. Valid certification. b Recertification after any major component repairs or replacements. c. The data system provides the raw profile data in format readable in ProVal. d. Current version of pavement profile analysis software installed on the IPS computer to compute the IRI. 2. Base plate and gauge blocks, of 1 inch and 2 inch thickness, provided by the manufacturer to verify daily vertical calibration. 3. Retro-reflective traffic marking tape or other approved mechanism to automatically trigger the start and stop of profile measurements. C. Procedure. PART C IS CHANGED TO: Perform the following steps: 1. Turn on the inertial profiler and warm up all electronic equipment in accordance with the manufacturer recommendations before testing. 2. Perform Block and Bounce tests each day before collecting data. Record the results in the calibration log. Ensure tolerances are within the certified limits. 3. Ensure retro-reflective traffic marking tape or other approved mechanism is placed at the beginning and end of each direction of travel lane. 4. Enter project information in the test equipment system. 5. Make provisions to start and stop recording profile at the beginning and end of testing. If an automatic trigger mechanism is not installed, make provision to initiate start and end of data recording manually by pressing an appropriate key(s) on the computer. 6. Ensure that the required speed, as recommended by the manufacturer, is achieved and that the system is collecting profile data before recording profile. 7. For each test section, perform 3 test runs to collect data of both wheel paths of each lane in the longitudinal direction of travel. The wheel path is defined as being located approximately 3 feet on each side of the centerline of the lane and extending for the full length of the lane. Lanes are defined by striping. 8. Save data from each run

being located approximately 3 feet on each side of the centerline of the lane and extending for the full length of the lane. Lanes are defined by striping. 8. Save data from each run separately before the next run or lane testing, clearly identifying each test run, lane identification, and run number. HELEN AVE., LAWRENCE AVE., FLORENCE PL., AND LOWELL AVE., IMPROVEMENTS PROJECT Page 76 of 76