What is a smoke barrier and where is it typically used in interiors?

• A. A fire-resistance-rated partition designed to limit fire spread within a room.
• B. A non-rated partition used to separate spaces.
• C. A fire-resistance-rated partition designed to limit smoke spread; used around egress routes and between occupancies.
• D. An open air corridor.

Answer: (C)

A smoke barrier is a fire-resistance-rated wall assembly designed to stop the spread of smoke, not just contain flames. Its main job is to create smoke compartments and protect escape paths, like corridors and stairs, as well as to separate occupancies so smoke can’t easily move from one area to another. Because it must restrain smoke, it carries a specified rating and openings (doors, openings) are also protected with smoke-rated hardware. In interior design practice, you’ll see smoke barriers used around egress routes and between different occupancies to keep smoke contained and maintain safe evacuation routes. A non-rated partition or an open-air corridor wouldn’t provide that smoke containment, so they aren’t appropriate.