8/24/2023 0 Comments 2.5 foot mini ramp plansFill in the form to see the minimum ramp length you need for commercial access or residential access so that you can start your ramp search by narrowing down length options. Our mobility ramp calculator uses the vertical rise, or rise, to calculate the minimum ramp length you need. Supplementary ADA Resources:ĪDA Specifications for Wheelchair Threshold Ramps and Landings Calculate This creates an incline of about 5 degrees.įor example: A 10" rise requires a minimum ramp length of 10’ (96"). The 1:12 slope ratio means that every one inch of vertical rise requires at least one foot (12") of ramp length. The Commercial Occupied Use ratio of 1:12 is the most commonly recommended slope for wheelchair ramps, however in private residences the slope can be smaller to accommodate for older construction and tighter spaces. Knowing the ADA Requirements will help you understand the figures that the Mobility Ramp Calculator outputs. ADA requirements are specific about the slope of the ramp in different use scenarios, and that will drive the ramp length you need. ![]()
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