What is the maximum rise allowed for stair treads according to accessibility requirements?

The maximum rise allowed for stair treads according to accessibility requirements, specifically under the Americans with Disabilities Act (ADA) guidelines, is 7 inches. This standard is designed to ensure that stairs are manageable for individuals with various mobility challenges.

While 8 inches might seem reasonable, it exceeds the ADA’s specified limit, which is set to optimize safety and accessibility for all users. The height of 7 inches helps to create a predictable and accessible stair environment. Additionally, standards often encourage a consistent rise throughout a given stairway to further enhance usability and safety.

Thus, the correct understanding of the maximum rise for stair treads as per accessibility requirements is that it must not exceed 7 inches.