Suit ramp to the user |
Slope requirements |
If step is this high... |
...ramp must be this long |
Ramp slope often referred to as... |
| I Gentle slope for most wheelchair users |
For each 1 in./25 mm in height, the ramp must extend 12 in./305 mm |
1 in./25 mm 2 in./51 mm 3 in./76 mm 4 in./102 mm 5 in./127 mm 6 in./152 mm 7 in./179 mm |
1 ft./305 mm 2 ft./610 mm 3 ft./914 mm 4 ft./1.2 m 5 ft./1.5 m 6 ft./1.8 m 7 ft./2.1 m |
"One in twelve" 1 in 12 1:12 1/12 "Five degree" 5 degree 5� |
| II For wheelchair users with STRONG arms; for those who MUST BE PUSHED by able-bodied; for motorized chairs |
For each 1 in./25 mm in height, the ramp must extend 9 in./229 mm |
1 in./25 mm 2 in./51 mm 3 in./76 mm 4 in./102 mm 5 in./127 mm 6 in./152 mm 7 in./179 mm |
9 in./229 mm 18 in./457 mm 27 in./686 mm 36 in./914 mm 45 in./1.1 m 54 in./1.4 m 63 in./1.6 m |
"Six degree" 6 degree 6� |
| III ONLY for wheelchair users who are unusually strong; when disabled is light- weight and pusher is strong; for extra-powerful motorized chairs |
For each 1 in./25 mm in height, the ramp must extend 7 in./179 mm |
1 in./25 mm 2 in./51 mm 3 in./76 mm 4 in./102 mm 5 in./127 mm 6 in./152 mm 7 in./179 mm |
7 in./179 mm 14 in./356 mm 21 in./533 mm 28 in./711 mm 35 in./889 mm 42 in./1.07 m 49 in./1.21 m |
"Eight degree" 8 degree 8� |
| IV Steepest slope - ONLY for suitable motorized vehicles or mechanical assists such as incline lifts and power hoists |
For each 1 in./25 mm in height, the ramp must extend 5 in./127 mm |
1 in./25 mm 2 in./51 mm 3 in./76 mm 4 in./102 mm 5 in./127 mm 6 in./152 mm 7 in./179 mm |
5 in./127 mm 10 in./254 mm 15 in./381 mm 20 in./508 mm 25 in./635 mm 30 in./762 mm 35 in./889 mm |
"Ten degree" 10 degree 10� |