What is the minimum aisle width required for stepped aisles with seating on each side?

The minimum aisle width required for stepped aisles with seating on each side is specified as 48 inches. This requirement is established to ensure safe and efficient movement of patrons within a commercial building, particularly in areas where large crowds may gather, such as theaters or auditoriums.

An aisle width of 48 inches provides enough space for individuals to pass each other comfortably, including the necessity for wheelchair accessibility. Wider aisles also help in case of emergencies, allowing for quicker evacuation. This standard reflects the importance of maintaining clear and accessible pathways in public spaces to prevent accidents and allow for smooth pedestrian traffic flow.

In contrast, narrower widths do not sufficiently accommodate the diverse range of users or the potential for high foot traffic, which could create bottlenecks and increase safety risks. Thus, 48 inches is recognized as an essential dimension for maintaining safety and accessibility in stepped aisle configurations.