According to the Americans with Disabilities Act (ADA), what is the maximum slope allowable for ramps?

The Americans with Disabilities Act (ADA) specifies that the maximum slope for ramps in accessible facilities is 1:12. This means that for every 12 units of horizontal distance, there can be a vertical rise of 1 unit. This standard is designed to ensure that ramps are accessible and safe for individuals with disabilities, allowing for easier navigation without overexerting those who may have mobility issues.

A slope of 1:12 is generally considered a reasonable balance between accessibility and space constraints, making it easier for individuals using wheelchairs or other mobility aids to ascend or descend the ramp without excessive strain.

The other options represent steeper slopes which would not comply with ADA guidelines, potentially posing challenges for accessibility and safety.