DIVISION 7

CONCRETE PAVEMENTS AND SHOULDERS

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710-7 FINAL SURFACE TESTING.

Acceptance testing of the longitudinal profile of the finished pavement surface shall be performed by the Contractor in the presence of the Engineer in accordance with these provisions. A Rainhart Profilograph (Model 1, No. 860) shall be furnished and operated by the Contractor to determine and record the longitudinal profile on a continuous graph (Profilogram) for acceptance testing of the pavement. Profiles shall be taken the day after the pavement has been placed except where impractical, but in no event later than 72 hours following placement of the pavement.

The Profilograph shall be towed, pushed manually, or otherwise moved over the pavement at a speed not exceeding 2 miles per hour. The propulsion vehicle shall have a gross weight not exceeding 1,000 pounds and shall have been approved by the Engineer. Profiles shall be taken with the recording wheel parallel to and approximately 3.5 ft. inside the two outer edges of the travel lanes and at the location of each longitudinal joint. Profiles will be taken over the entire length of through lane and ramp pavement exclusive of structures and approach slabs. Additional profiles shall be taken only to define the limits of an out-of-tolerance surface variation. Upon completion of each day's testing, the Profilograms shall be submitted to the Engineer for analysis and will be retained by the Engineer.

At the beginning and end of each day's testing operations, and at such other times as determined necessary by the Engineer, the Profilograph shall be operated over a calibration strip so that correct operation of the Profilograph can be verified by the Engineer. The calibration strip shall be a section of pavement selected by the Engineer. Obstructions of known dimensions shall be furnished by the Contractor and temporarily installed by him in the path of the Profilograph. The Profilograph shall be operated by the Contractor in the same manner as it is operated over pavement outside of the calibration strip.

The Profilogram shall be plotted at a horizontal scale of 25 feet per inch with the vertical scale plotted at a true scale. Station numbers and reference lines shall be recorded on the Profilograms, and distances between reference locations shall not exceed 200 feet.

The profile index will be determined by the Engineer in accordance with the procedure titled "Determination of Profile Index". Copies of this procedure can be obtained from the Construction Unit.

The completed concrete pavement surface shall have a profile index (PI) along any line tested not exceeding 4 inches per mile, as determined with a 0.20 inch blanking band, over any 600 foot section of pavement. Individual deviations shall not exceed 0.3 inches over any 25 foot length of the line tested. In the event the above surface requirements are not met, acceptance will be made in accordance with Article 105‑3.

Membrane curing compound damaged during acceptance testing operations shall be promptly repaired by the Contractor.

In the event the Contractor does not produce a pavement surface that meets the requirements of this article, the Engineer may suspend the Contractor's operations until such time as the Contractor satisfies the Engineer, by making necessary adjustments to equipment, methods, or personnel, that he can produce a pavement surface that will meet these surface requirements. The use of excessive grinding, as determined by the Engineer, to meet these requirements will not be permitted.