What is the function of compartmentation in fire safety design?

• A. To enhance decorative segmentation.
• B. To allow larger areas or heights within each compartment by isolating fire areas.
• C. To eliminate the need for fire detection.
• D. To reduce ventilation rates.

Answer: (B)

Compartmentation confines fire to a defined space using fire‑resistant boundaries, with the aim of slowing or stopping its spread and maintaining safer conditions for occupants and responders. This approach allows larger areas or greater heights to exist within a single compartment because the fire is isolated by these boundaries, keeping the fire from jumping into other parts of the building. In practice, this means you can design bigger volumes inside one compartment while still containing the hazard, rather than having the entire building ignite at once. Decorative segmentation isn’t related to safety, and fire detection or suppression still plays a critical role; compartmentation isn’t about reducing ventilation rates, though smoke control can be influenced by how compartments are arranged.