Ramp Calculation Chart

Image of ramp calculation chart
This ramp calculation chart will help you figure out how long your Roll-A-Ramp should be.
How long of a ramp should I buy?

Generally Recommended Slope Angles:

5-degree: This is Americans With Disabilities Act compliant – click here for more information about Roll-A-Ramp and ADA

7-degree: Manual wheelchair users who are independent or who have an attendant with limited strength

10-degree: Manual wheelchairs with a reasonably strong attendant

12-degree: Power wheelchairs or scooters and manual chairs with a strong attendant

15-degree: Restricted space, unoccupied loading/unloading

Determining the length of a ramp is not complicated

Determining Ramp Length:
Measure total rise (how many inches from lower level to upper level) and divide by the slope.

5-degree: Rise distance divided by 1

7-degree: Rise distance divided by 1.5

10-degree: Rise distance divided by 2

12-degree: Rise distance divided by 2.4

15-degree: Rise distance divided by 3

Example: For a desired slope of 7 degrees with a rise of 12″ (1 foot), 12/1.5 = 8 foot ramp