How is the width of corridors and exits justified in means of egress design?

• A. Aesthetics and preferred interior design.
• B. Color of exit signage.
• C. City’s historical architectural style.
• D. Based on occupant load, travel distance, and number of required exits, as specified by codes.

Answer: (D)

Width of corridors and exits is sized to meet the expected demand for evacuation. The occupant load sets how many people might need to exit, travel distance determines how far they must go to reach an exit, and the number of required exits plus their widths determine how quickly everyone can leave. Building and fire codes specify minimum total exit width and how it must be distributed to ensure a safe, timely egress under stress and smoke. Wider paths and more exits reduce bottlenecks and egress time, improving safety. Factors like aesthetics, signage color, or architectural style don’t determine egress width and aren’t used to justify capacity; they affect visibility but not the ability to move people out.