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Doorway minimum width
32 inches when open
Floor distance on either side of doorway
5 feet each direction
Floor must be level
Door threshold height
Less than ½ inch
Stair edge depth
No more than 1.5 inches
Stair handrail height
34-38 inches
Handrail extension beyond stairs
12 inches minimum
Maximum step height
7 inches
Minimum step depth
11 inches
Space between bathroom sinks and stalls
5 feet minimum
Bathroom handrail height
33 inches
Toilet seat height
17-19 inches from floor
Clearance beneath sink
29 inches minimum
Mirror and shelf height, bathroom
40 inches maximum from base to floor
Elevator door width
36 inches minimum
Elevator button height
Less than 42 inches from ground
Sidewalk width
Minimum 36 inches
Rise to run ratio, ramps
1 to 12
Max ramp length before landing required
30 feet