Fire-resistant doors are commonly installed in high-rise buildings, corridors, basements, factories, and other areas, offering not only fire protection but also dust and wind resistance. Doors of different ratings are typically installed in various locations.
Fire doors are generally installed in high-rise buildings, corridors, basements, factories, and other places, which not only prevent fire but also prevent dust and wind. Fire doors of different levels are generally installed in different places.
Grade A fire-resistant door placement
1. Location of Class A Fire Doors
Doors opened in firewalls should be of Class A fire-rated doors; fire elevator shafts and machine rooms, as well as adjacent elevator shafts and machine rooms, should be separated by non-combustible walls with fire resistance not less than 2.00 hours; when doors are opened in the fire-resistant walls, Class A fire-rated doors should be installed. In fire compartmentation areas,甲级常开防火 doors should be set for evacuation corridors.
The doors opened on the firewall should be Class A fire doors; Fire elevator shafts and machine rooms should be separated from adjacent elevator shafts and machine rooms by non combustible partition walls with a fire resistance limit of not less than 2.00 hours; When opening doors on partition walls, Class A fire doors should be installed. Evacuation corridors located in fire compartments should be equipped with Class A normally open fire doors.
2. Grade B fire-resistant door placement
2. Location of Class B fire doors
The door to the outdoor staircase should be a Class B fire door and should open outward; the stairwell of the basement or semi-basement should be separated from other areas by non-combustible walls with a fire resistance not less than 2.00 hours on the first floor, and should directly lead to the outside. If it is necessary to open a door in the partition wall, a Class B fire door should be used. The basement, semi-basement, and ground floor should not share the same stairwell; if they must, a non-combustible wall with a fire resistance not less than 2.00 hours and a Class B fire door should be used to completely isolate the connection between the basement/semi-basement and the ground floor, with clear signage.
The door leading to the outdoor staircase should be a Class B fireproof door and should open to the outside; The stairwells in basements and semi basements should be separated from other parts by non combustible partition walls with a fire resistance limit of not less than 2.00 hours on the first floor, and should lead directly to the outside. When it is necessary to open doors on the partition walls, Class B fire doors should be used; basements, semi basements, and aboveground floors should not share stairwells. When it is necessary to share stairwells, non combustible partition walls with a fire resistance limit of not less than 2.00 hours and Class B fire doors should be used on the first floor to completely separate the connecting parts between the underground, semi underground, and aboveground parts, and there should be clear signs.
