The slope of an access ramp to a facility must be no more than what ratio?

The slope of an access ramp to a facility is governed by accessibility standards to ensure that it is safe and functional for individuals with disabilities. A ratio of 1:12 indicates that for every inch of vertical rise, there must be at least 12 inches of horizontal distance. This standard is generally accepted in many building codes as the maximum slope for wheelchair access. A 1:12 ratio allows users to navigate the ramp comfortably without excessive strain or risk of falling.

When considering the other options, they represent steeper slopes (1:10) and even less optimal configurations (1:14 and 1:16), which could be less accessible and therefore discouraged under most regulatory guidelines. The 1:12 ratio strikes an appropriate balance between usability for individuals requiring assistance and practical design considerations for the construction of the ramp.