Sources: ASTM International, West Conshohocken, Pa.; CP staff
ASTM Committee E17’s proposed WK41917, Practice for Computing Pathway Roughness Index from Longitudinal Profile Measurements standard describes a method to collect and analyze sidewalk slab roughness data. Roughness can make sidewalks uncomfortable and risky for wheelchair and wheeled-walker users, parents pushing strollers and postal carriers with three-wheeled carts, the committee contends.
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