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Development of Surface Roughness Standards for Pathways Used by Wheelchair Users: Final Report

APPENDIX B

OUTSIDE SURFACES

This figure shows pictures of the 18 outside surfaces used in the study and their roughness index. The roughnesses range from .41 to 2.02 in/ft. The type of surfaces are a mix of brick, concrete, asphault, stamped concrete, cobblestone, etc.

Figure 27: Pictures and Roughness Index of Outside surfaces

Source: Development of Surface Roughness Standards for Pathways Used by Wheelchair Users: Final Report by Human Engineering Research Laboratories - published 12/2014

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