What is the minimum width for a tread on a moving stairway?

The minimum width for a tread on a moving stairway is essential for safety and accessibility. In Massachusetts, regulations typically require that moving walkways and escalators be designed to accommodate safe use by a wide range of individuals, including those with mobility devices. A tread width of 16 inches strikes a balance between being wide enough to provide a stable and secure foothold while also adhering to standards for pedestrian movement in public spaces. This width facilitates an efficient flow of users, reducing the risk of accidents or tipping.

A tread width smaller than 16 inches would not adequately support users, potentially leading to safety hazards. Choosing a width larger than 16 inches, while it may seem beneficial, is not mandated as the minimum requirement, which can unnecessarily increase costs and design complexity without significant safety benefits. Hence, 16 inches is recognized as the appropriate minimum width for a tread on a moving stairway to ensure user safety and comfort.