Built-up Curb Ramps [4.7.6]
Built-up curb ramps are permitted where they do not project into vehicular traffic lanes or access aisles at parking spaces and passenger loading zones. (The surface of access aisles cannot slope more than 2% in any direction). Recommendation: Curb ramps with returned sides or concave flares are preferred over built-up curb ramps with convex flares because they provide greater edge protection.
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