Which term describes a rated barrier used to subdivide a building and limit fire spread with protection for openings?

• A. Fire barrier
• B. Fire wall
• C. Smoke barrier
• D. Smoke partition

Answer: (A)

Fire barriers are rated assemblies that subdivide a building to limit the spread of fire and require protection for openings. They create compartments within a structure, so fire is contained to a smaller area, and openings like doors, frames, glazing, and penetrations must be fire-rated to maintain that protection. This matches the description of a barrier designed to subdivide space and curb fire spread while guarding openings.

A fire wall is a more specific type of barrier that must run continuously from foundation through the roof and separate adjoining buildings or sections, with stricter continuity requirements. Smoke barrier and smoke partition focus on restricting smoke movement rather than fire spread or protecting openings in the same way as a fire barrier.