Ada guidelines require a minimum 5 x 5 flat unobstructed area at the top and bottom of the ramp.
Electric wheelchair ramp slope.
Maximum slope for power chairs should be 1 5 rise to 12 length 7 1 degree angle.
Residential applications can use a 2 12 slope ratio if space is an issue but only if an assistant is present to help push the wheelchair or to help a person walking on the ramp.
Wheelchair ramp slope and percent of grade information percent of grade formula.
Disability systems recommends a 1 12 slope on most applications.
A 24 rise requires a minimum ramp length of 24 288 24 divided by 1.
To determine the percent of grade.
Run is not the length of the ramp.
Modular ramps modular ramps are built for both home and commercial access.
For commercial use when somebody is sitting in the wheelchair or scooter while it climbs the ramp ada recommends a 1 12 slope which means that every 1 of vertical rise requires at least 1 12 of ramp length 5 degrees of incline.
The distance horizontally not along the slope from the top of the ramp to the bottom.
Divide rise by the run of ramp.
Maximum slope for hand propelled wheelchair ramps should be 1 of rise to every 12 of length 4 8 degree angle.
Please call our wheelchair ramp specialists today at 1 855 638 7554 we ll be glad to provide you with all the information you need to get started on your project.
For instance a 30 inch rise requires a 30 foot handicap wheelchair ramp.
6 rise 52 ramp run 115 or 11 5 grade.