A given pavement rating method uses six distress types to establish the DR. These are: corrugation, alligator cracking, raveling, longitudinal cracking, rutting, and patching. For a section of highway, the number of points assigned to each category were 5, 3, 3, 3, 4, and 3. If the weighting factors are 1, 1, 1, 1, 2, and 1.5, respectively, determine the DR for the section.
What will be an ideal response?
Distress rating (DR) can be calculated using Equation 21.1,
DR = 100 - ? (di × wi)
DR = 100 – [(5)(1) + (3)(1) + (3)(1) + (3)(1) + (4)(2) + (3)(1.5)]
DR = 100 – 26.5
DR = 73.5
Therefore, the DR for this pavement section is 73.5.
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