What is the minimum rise for public stair treads?

The minimum rise for public stair treads is specifically set at 125mm to meet accessibility and safety requirements in building codes. This dimension ensures that the stairs are comfortable to navigate for most users, including those with mobility challenges. A rise of 125mm facilitates a consistent step height that can help prevent tripping hazards while accommodating a wide range of individuals.

Building codes also emphasize the importance of uniformity in stair dimensions, as variations can lead to user confusion and increased risk of accidents. The choice of 125mm as a minimum rise reflects a balance between usability and safety, making stairs easier to ascend and descend.

Choices with heights below or above this threshold do not align with the standards that promote overall safety and accessibility in public spaces. Adhering to this code is crucial for compliance and the safety of the public using these stairways.