Hardened materials such as concrete asphalt tile and wood are sufficiently firm and stable for accessibility.
Ada ground and floor surfaces.
Wheelchairs move most easily on hard stable and regular surfaces.
305 clear floor ground spaces.
Changes in level are not permitted.
The cross slope of walking surfaces shall not be steeper than 1 48.
Parking spaces and access aisles serving them shall comply with 302.
Accessible surfaces remain unchanged by external forces objects or materials.
Elongated openings shall be placed so that the long dimension is perpendicular to the dominant direction of travel.
Ground and floor surfaces along accessible routes and in accessible rooms and spaces including floors walks ramps stairs and curb ramps shall be stable firm slip resistant and shall comply with 4 5.
502 4 floor or ground surfaces.
403 4 changes in level.
Changes in level up to 1 4 in 6 mm may be vertical and without edge treatment.
Openings in floor or ground surfaces shall not allow passage of a sphere more than 1 2 inch 13 mm diameter except as allowed in 407 4 3 409 4 3 410 4 810 5 3 and 810 10.
306 knee and toe clearance.
Swinging door and gate surfaces within 10 inches 255 mm of the finish floor or ground measured vertically shall have a smooth surface on the push side extending the full width of the door or gate.
The ada discusses ground and floor surfaces in section 4 5 where they say in general that.
Required clearances including clear floor space wheelchair seating spaces turning space and door maneuvering clearances.
The running slope of walking surfaces shall not be steeper than 1 20.
Interior and exterior accessible routes including walking surfaces ramps elevators and lifts.
302 floor ground surfaces.
Soft loose surfaces such as sand or gravel wet clay or cobblestones can make it difficult for wheelchairs to move in ease.
Walking surfaces shall provide clearances complying with 403 5.
Floor or ground surfaces shall comply with 302.
Accessible floor and ground surfaces must be stable firm and slip resistant.
Ground and floor surfaces along accessible routes and in accessible rooms and spaces including floors walks ramps stairs and curb ramps shall be stable firm slip resistant and shall comply with 4 5.
303 change in level.
Ada ground and floor surfacesalong accessible routes must be stable firm and slip resistant.
Changes in level shall comply with 303.
Specifications for floor and ground surfaces address surface characteristics carpeting openings and changes in level.
403 2 floor or ground surface.
Stairways that are part of a means of egress.
404 doors doorways gates.