DECEMBER 20,1999

The attached specifications currently apply to resurfacing projects only. These specifications are used on interstate or state typicals.

TO BE USED ON VT AND US ROUTES USING SUPERPAVE:

490.16 SURFACE TOLERANCE- ACCEPTANCE TESTING WILL BE PERFORMED ONLY ON THE WEARING COURSE. THE SURFACE ROUGHNESS WILL BE MEASURED BY THE ENGINEER, OR HIS REPRESENTATIVE WITH AN AGENCY OWNED TRAILER MOUNTED RAINHART MAYS RIDE METER AFTER ALL THE PAVEMENT HAS BEEN PLACED. SURFACE OBSTRUCTIONS WILL BE ELIMINATED FROM THE FINAL PROJECT AVERAGE, SUCH AS BRIDGES THAT REMAINED UNPAVED WITHIN THE PROJECT LIMITS. TESTING WILL BE PERFORMED WITHIN TWO WEEKS OF THE PERMANENT MARKING PLACEMENT.

FINAL PAY FACTOR FOR THE BITUMINOUS CONCRETE PAVEMENT USED ON THE WEARING COARSE ONLY WILL BE ADJUSTED BY THOSE FACTORS SHOWN IN TABLE 490.16A, BASED ON AVERAGE OF THREE RUNS AT THE POSTED SPEED LIMIT(S) OF MEASURED ROUGHNESS FOR EACH LANE THEN AVERAGED TO ARRIVE AT THE FINAL PROJECT AVERAGE.

-------------------------------------------------------------------TABLE 490.16A

PAY FACTOR ROUGHNESS INDICATED

IN IRI

1.03 < 50

1.015 51 - 65

1.00 66 - 85

.985 86 - 95

.97 > 95

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THE TOTAL TONNAGE OF PAVEMENT ALREADY ADJUSTED BY ANY APPLICABLE PAY FACTORS WILL BE MULTIPLIED BY THE FINAL PAY FACTOR IN TABLE 490.16A, TO DETERMINE THE ACCEPTED QUANTITY TO BE PAID.