What is the minimum clear width of a stairway when a handrail is installed on only one side?

The minimum clear width of a stairway when a handrail is installed on only one side is specified to be 31 and 1/2 inches. This measurement is important because it ensures that there is enough room for safe passage, especially in scenarios where someone may be carrying objects or needs to navigate the stairs in a manner that does not compromise safety.

The standard width requirement takes into account the space needed for individuals to comfortably use the staircase, as well as for emergency evacuation. It strikes a balance between accessibility and the practical use of stairways in residential and commercial buildings.

Other widths, such as 28 inches or 36 inches, may not provide the same level of safety and usability for all users. Therefore, adherence to the 31 and 1/2 inches measurement aligns with building codes and safety guidelines established for stairway design. This ensures that stairs are functional and minimize the risk of accidents or injuries during use.