What is the minimum width required for a corridor that serves as access to an exit?

The minimum width required for a corridor that serves as access to an exit is indeed 1100mm. This measurement aligns with safety standards that are set forth in various building codes, including the National Building Code of Canada. The rationale behind specifying a minimum width is to ensure that sufficient space is available for occupants to safely and efficiently evacuate a building in the event of an emergency.

A corridor width of 1100mm is considered to provide adequate capacity for the movement of individuals, including those who may require assistance or have mobility aids. Additionally, this width accommodates the necessary clearances for doors and other obstructions, facilitating a smooth and unobstructed exit route.

While a minimum width of 900mm might seem like it could be adequate in certain contexts, it is often too narrow to accommodate higher occupancy loads during emergency conditions. Wider options, such as 1200mm or 1500mm, are generally reserved for spaces with larger occupancy loads or specific situations where increased accessibility is required but are not the minimum standard for general exits.