What is the required fire-resistance rating for a one-hour fire barrier?

The required fire-resistance rating for a one-hour fire barrier is a minimum of 1 hour. This rating is established to ensure that the barrier can withstand exposure to fire for that duration, thereby providing necessary protection against the spread of flames and heat. A one-hour fire barrier is intended to limit the spread of fire and smoke, giving occupants more time to evacuate and allowing fire-fighting personnel to operate more effectively.

Understanding fire-resistance ratings is crucial for compliance with building codes, as they dictate the safety measures that must be implemented in construction. A fire barrier rated for one hour must be tested according to standards specified in codes such as the International Building Code (IBC). This helps ensure that during a fire event, the barrier will function as intended, maintain structural integrity, and fulfill its role in life safety and property protection.