300984 Lecture Notes - Lecture 2: American Association Of State Highway And Transportation Officials, Profilometer, Portland Cement
27 May 2020
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Rd = the rut depth measured in inches over a 4-ft span embracing each. Rd wheel track (average for both wheel tracks) Sv = the slope variance 106 (average of both wheel tracks. C = the cracking, expressed as the area of pavement in square feet exhibiting grid-pattern cracking or other cracking leading to the breakout of the bituminous surfacing measured over an area of 1000 ft2. P = the area of patching per 1000 ft2. The slope variance is defined as follows: ni. 10 where xi is the ith slope measurement and n is the total number of measurements made. Slope variance was measured by the chloe profilometer in which the pavement slope over a 9-in baseline was measured with respect to the average slope of the pavement at intervals of. C = total linear footage of cracks (cracks opened or spalled to a depth of. Inch or more) per 1000 square foot of lane area.
