What is the required slope range for wheelchair accessible ramps according to accessibility codes?

The required slope range for wheelchair accessible ramps, as specified in accessibility codes such as the Americans with Disabilities Act (ADA), is 1:12 to 1:20. This slope ensures that ramps are not too steep, providing a safer and more manageable experience for individuals using wheelchairs or other mobility devices.

A slope of 1:12 means that for every inch of vertical rise, there must be at least 12 inches of ramp run. This translates to a 5% grade, which is the maximum slope recommended for accessibility. A slope too steep can pose safety risks and make navigation challenging for users. In addition to usability, this slope range aligns with design standards meant to promote safe and equal access to buildings and facilities for individuals with disabilities.

Other slope ranges mentioned in the choices do not meet the accessibility standards, and using them could lead to non-compliance with regulations designed to ensure accessibility and safety.