Wheelchairs move most easily on hard stable and regular surfaces.
Ada ground and floor surfaces.
Stable surfaces resist movement while firm surfaces resist deformation by applied forces.
Soft loose surfaces such as sand or gravel wet clay or cobblestones can make it difficult for wheelchairs to move in ease.
The running slope of walking surfaces shall not be steeper than 1 20.
305 clear floor ground spaces.
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.
Hardened materials such as concrete asphalt tile and wood are sufficiently firm and stable for accessibility.
Interior and exterior accessible routes including walking surfaces ramps elevators and lifts.
302 floor ground surfaces.
502 4 floor or ground surfaces.
Stairways that are part of a means of egress.
Accessible floor and ground surfaces must be stable firm and slip resistant.
Specifications for floor and ground surfaces address surface characteristics carpeting openings and changes in level.
Parking spaces and access aisles serving them shall comply with 302.
306 knee and toe clearance.
The cross slope of walking surfaces shall not be steeper than 1 48.
Accessible surfaces remain unchanged by external forces objects or materials.
403 2 floor or ground surface.
The ada discusses ground and floor surfaces in section 4 5 where they say in general that.
Parts creating horizontal or vertical joints in these surfaces shall be within 1 16 inch 1 6 mm of the same plane as the other.
Required clearances including clear floor space wheelchair seating spaces turning space and door maneuvering clearances.
Changes in level shall comply with 303.
Elongated openings shall be placed so that the long dimension is perpendicular to the dominant direction of travel.
Access aisles shall be at the same level as the parking spaces they serve.
Ada ground and floor surfacesalong accessible routes 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.
404 doors doorways gates.
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.
Changes in level are not permitted.
Floor or ground surfaces shall comply with 302.
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.
Walking surfaces shall provide clearances complying with 403 5.
