Stairways that are part of a means of egress.
Ada ground and floor surfaces.
Parking spaces and access aisles serving them shall comply with 302.
Elongated openings shall be placed so that the long dimension is perpendicular to the dominant direction of travel.
Changes in level shall comply with 303.
403 4 changes in level.
Changes in level up to 1 4 in 6 mm may be vertical and without edge treatment.
Ada ground and floor surfacesalong accessible routes must be stable firm and slip resistant.
Floor or ground surfaces shall comply with 302.
Wheelchairs move most easily on hard stable and regular surfaces.
Accessible floor and ground surfaces must be stable firm and slip resistant.
502 4 floor or ground surfaces.
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.
Walking surfaces shall provide clearances complying with 403 5.
403 2 floor or ground surface.
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.
306 knee and toe clearance.
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.
The cross slope of walking surfaces shall not be steeper than 1 48.
Interior and exterior accessible routes including walking surfaces ramps elevators and lifts.
Access aisles shall be at the same level as the parking spaces they serve.
302 floor ground surfaces.
Accessible surfaces remain unchanged by external forces objects or materials.
Changes in level are not permitted.
Soft loose surfaces such as sand or gravel wet clay or cobblestones can make it difficult for wheelchairs to move in ease.
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.
The running slope of walking surfaces shall not be steeper than 1 20.
404 doors doorways gates.
Stable surfaces resist movement while firm surfaces resist deformation by applied forces.
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.
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.
Specifications for floor and ground surfaces address surface characteristics carpeting openings and changes in level.
