ADA
In ADA ramps max slope is 1/12 and min 1/20, and slope for regular floors is max 1/48.
What rules apply to the grounds with slopes between 1/20 and 1/48? What happens there?
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Hi Yusuf,
A ramp is anything with a slope of 1:20 or steeper. That must comply with ADA if it's part of an accessible route. It doesn't need handrails though if it's under a 6" rise, but the surface/width/etc are still regulated by ADA. Anything less than that is just a sloping surface.
I think you are starting to see that if you can just make surfaces that slope less than 1:20, you save yourself a lot of headaches and $$. Typically this is possible if you have a large area to work with and only a few inches of height change. The slope would be so gradual, you'd hardly notice.
Hope this helps!
Rebekka O'Melia, R.A., NCARB, B. Arch, M. Ed, NOMA, Step UP ARE 5.0 Courses
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