A fire door is best described as which of the following?

A fire door is best described as which of the following?

• A. Fire rated barrier, hinged or sliding, that closes automatically to prevent the spread of fire
• B. A door that bursts open during a fire
• C. A door that cannot be opened from inside during a fire
• D. A decorative door with a fire emblem

Answer: (A)

Fire doors are part of a building’s passive fire protection. They are fire-rated barriers that can be hinged or sliding and are designed to close automatically to prevent the spread of fire and smoke between compartments. That automatic closure is crucial because it seals off areas to slow the spread, buy time for people to evacuate, and give responders better access. In theatre practice, these doors should be kept closed and not propped open; many have hold-open devices that release to let the door close when a fire alarm or heat is detected. Other descriptions miss the point of this protection: a door that bursts open during a fire would defeat containment; a door that cannot be opened from inside during a fire would impede egress; a decorative door with a fire emblem provides no safety function.

Fire doors are part of a building’s passive fire protection. They are fire-rated barriers that can be hinged or sliding and are designed to close automatically to prevent the spread of fire and smoke between compartments. That automatic closure is crucial because it seals off areas to slow the spread, buy time for people to evacuate, and give responders better access. In theatre practice, these doors should be kept closed and not propped open; many have hold-open devices that release to let the door close when a fire alarm or heat is detected.

Other descriptions miss the point of this protection: a door that bursts open during a fire would defeat containment; a door that cannot be opened from inside during a fire would impede egress; a decorative door with a fire emblem provides no safety function.