What is the required fire-resistance rating for smoke barriers?

The required fire-resistance rating for smoke barriers is typically 1 hour. Smoke barriers are critical components in building design that help to limit the spread of smoke within a building. The one-hour rating is recognized as sufficient for preventing the movement of smoke during a fire, allowing time for occupants to evacuate safely and for firefighting efforts to take place.

This rating is based on standards set by the International Building Code and the National Fire Protection Association, which outline the necessary fire protection measures for various building elements. Smoke barriers are designed not only to provide a physical division to help control smoke but also to ensure compliance with life safety and property protection objectives during a fire event.