What is the maximum height for accessible countertops and other horizontal work surfaces?

The maximum height for accessible countertops and other horizontal work surfaces is generally set at 34 inches above the finished floor (AFF) to ensure comfortable access for individuals, particularly those who use wheelchairs. This height is designed to accommodate the reach and functional needs of a wide range of users, aligning with accessibility guidelines such as the Americans with Disabilities Act (ADA).

At this height, individuals in wheelchairs can access the surfaces without difficulty, allowing for a more inclusive environment. Standards are often established to balance usability and safety, thereby promoting an ergonomic experience for users of various physical abilities. Setting the height at 36 inches, for example, would not provide adequate accessibility for individuals with limited reach or mobility.

Overall, the 34-inch height reflects both practical design considerations and adherence to established accessibility standards, making it the most appropriate choice.