By how much must aisle widths increase in the direction of exit travel for places of assembly?

In the context of building codes and safety regulations, particularly for places of assembly, the required increase in aisle widths as individuals proceed toward exits is crucial for facilitating safe and efficient egress during an emergency.

The requirement for an increase of 25 mm typically stems from the need to accommodate a larger flow of people as they move towards exits. In places of assembly where a significant number of occupants could be present, such as theaters, arenas, or conference halls, safety codes aim to prevent bottlenecks and ensure that everyone can evacuate quickly and safely.

Adhering to this guideline helps in managing crowd dynamics and reduces the risk of injury during evacuations. Ensuring that aisles are wide enough to handle the maximum anticipated occupancy is essential for compliance with building codes and for the protection of public safety in high-capacity venues.