The goal of this project was to investigate the Wheelchair Pathway Roughness Index (WPRI) values of 96 various concrete permeable and non-permeable concrete paver surfaces in the Pittsburgh, Philadelphia/New Jersey, and Northern Virginia areas. Data regarding joint width, chamfer width, imagery, and WPRI values were collected. WPRI values were collected by pathVu’s PathMeT technology according to ASTM E3028. The results were compared against published suggested thresholds by Duvall et al. According to those thresholds, 77 surfaces performed within the acceptable WPRI range, 19 performed with the cautioned range, and 0 were found to be in the unacceptable range. A correlation between joint width, chamfer width, and WPRI was evident. Joint and chamfer width appear to be significant factors in determining WPRI.
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PAV-FDN-016-14