What is the maximum slope allowed for any ADA walkway or ramp?

The maximum slope allowed for any ADA accessible walkway or ramp is 8.33%. This is equivalent to a 1:12 ratio, which means for every inch of vertical rise, there must be at least 12 inches of horizontal run. This slope is designed to ensure that ramps are accessible to individuals with mobility impairments and can be navigated safely without excessive effort.

In the context of ADA compliance, steeper slopes can pose challenges for individuals using wheelchairs or other mobility aids, potentially leading to difficulties in navigating the incline and increasing the risk of slipping or falling. By setting the maximum slope at 8.33%, the guidelines aim to create a balance between access and safety, ensuring that ramps provide a means for individuals with disabilities to traverse changes in elevation without undue strain. This standard is widely adopted in various accessibility regulations and architectural practices to promote inclusive design.