Difference between Smoke Barriers/Partitions/Walls/Compartments

What is the difference between Smoke Barriers/Partitions/Compartments?

Although similar language is used to define both smoke barriers and smoke partitions, and both perform similar functions, smoke barriers are specifically required in certain Life Safety Code® chapters to subdivide building spaces into smoke compartments for the purpose of restricting the movement of smoke. They are typically required to be rated at either 30 minutes or one hour. Smoke partitions, however, are generally equated with corridor walls or ceilings that are not required to have a fire-resistive rating, such as those in a fully sprinklered smoke compartment or building but are still required to limit the transfer of smoke.


Definitions from NFPA 101, 2000 edition

Chapter 3


Smoke Barrier: “A continuous membrane, or a membrane with discontinuities created by protected openings, where such membrane is designed and constructed to restrict the movement of smoke.”

Smoke Compartment: “A space within a building enclosed by smoke barriers on all sides, including the top and bottom.”

Smoke Partition: “A continuous membrane that is designed to form a barrier to limit the transfer of smoke.”