In Section 320.3 G of the specifications, delete the second and third sentences of the paragraph regarding checking the final lift with a 10-foot straightedge and replace with the following: The pavement smoothness will be determined by profiling the finished surfaces of the mainline pavement. All finished bituminous surfaces will be profiled with the following conditions and exceptions: A. Exclusions: Excluded from the profile testing are: 1. Bridge decks, approach slabs and a distance of 100 feet from the end of the bridge (or approach slab if applicable); 2. Ramps, acceleration lanes, deceleration lanes, turning lanes, and any lane less than 0.3 miles in length; 3. Side roads; 4. Shoulders and gore areas; 5. Driving lanes within 6 feet of existing curb and gutter sections (curb and gutter to remain in place); 6. Sections with a speed limit of less than 45 mph; 7. The first or last 100 feet of a pavement where the Contractor is not responsible for the adjoining in place pavement; 8. A distance of 100 feet from railroad crossings; and, 9. A distance of 200 feet before stop signs at an intersection. 06PQ_ACsmooth(20210520).docx 2 On surfaces excluded from the profile testing, the Engineer will determine the pavement smoothness according to the following: The surface of each lift will be free of waves and other irregularities. The final lift surface will be checked with a 10-foot straightedge. The variation of the surface from the straightedge between any two contact points will not exceed 1/4 inch. B. Profiler: The Department will furnish and operate the profiler. The Department will measure and analyze the surface smoothness of the final roadway surface profile using the International Roughness Index (IRI) to the nearest 0.1 inch/mile. The Department will be using a profiler that meets ASTM E-950 Class I specifications. The profiler will have the long and short wavelength filters set to 0 feet. C. Operation: The Department will evaluate the surface smoothness on a lot basis. A lot is defined as a single paved lane, 12 feet wide, and 0.10 mile long. Pavement sections less than 0.10 mile long will be tested, the results will be combined with the previous adjacent lot, and the average IRI and price adjustment will be prorated. If the section is less than 0.10 mile long but at least 200 feet long and not adjacent to a previous lot, the average IRI and price adjustment for the section will be evaluated individually and prorated. The Department will collect the profile data after the Contractor completes all AC paving required for profiling. If the project is constructed in phases, the Department may profile test a completed phase before the completion of subsequent phases. If the Contractor does not complete the final lift of pavement before the seasonal limitation, the Department will collect profile data for all portions of the roadway paved through the final lift at the completion of construction for the season. The Department will collect profile data for the remaining pavement once the paving is completed. The Contractor will not flush seal the final surface until the Contractor has completed all grinding and the Department has collected all profile data.
