Which concept helps limit fire spread by separating building spaces into distinct sections?

• A. Barrier
• B. Alerting
• C. Compartmentation
• D. Evacuation

Answer: (C)

Compartmentation is the method used to limit fire spread by dividing a building into separate fire-resistance–rated sections. By using fire walls, floors, and rated doors that resist heat and flames for a defined period, each area becomes its own enclosed space. If a fire starts in one compartment, the barriers slow or stop the flames and smoke from moving into adjacent areas, giving occupants more time to evacuate and firefighters a better chance to control the fire. While barriers are important components, the overall strategy is compartmentation—the deliberate division of the structure into distinct sections to contain fire. Alerting and evacuation serve different safety goals (warning people and moving them to safety) and don’t describe the structural approach to containing the fire itself.