Which statement describes egress corridor width requirements?

Which statement describes egress corridor width requirements?

• A. Width is fixed at 42 inches regardless of occupancy.
• B. Width is determined by ceiling height only.
• C. Width is not specified in NFPA 101.
• D. Egress corridors must have minimum width to accommodate the expected occupant load and egress velocity; the exact width depends on occupancy and protection features.

Answer: (D)

Corridor width is sized to match how many people must exit and how quickly they can move. NFPA 101 doesn’t set a single fixed width for all facilities. Instead, the width must be enough to accommodate the expected occupant load and the egress velocity, with the exact measurement depending on the type of occupancy and the protection features in place (such as sprinklers, fire doors, and other safety measures). In larger occupancies or when flow needs to be faster, wider corridors are required to prevent bottlenecks and maintain safe egress times. The presence or absence of protective features can influence the required width through the code’s sizing rules. So the correct idea is that minimum width is tied to the expected occupant load and egress velocity, and the exact width varies with occupancy type and protection features.

Corridor width is sized to match how many people must exit and how quickly they can move. NFPA 101 doesn’t set a single fixed width for all facilities. Instead, the width must be enough to accommodate the expected occupant load and the egress velocity, with the exact measurement depending on the type of occupancy and the protection features in place (such as sprinklers, fire doors, and other safety measures). In larger occupancies or when flow needs to be faster, wider corridors are required to prevent bottlenecks and maintain safe egress times. The presence or absence of protective features can influence the required width through the code’s sizing rules. So the correct idea is that minimum width is tied to the expected occupant load and egress velocity, and the exact width varies with occupancy type and protection features.