Fire doors are generally located in the following areas.

(1) Enclosed evacuation stairs leading to corridors; Enclosed elevator lobby, doors leading to the front room and the front room leading to the aisle.

(2) Inspection doors for vertical pipeline shafts such as cable shafts, pipeline shafts, smoke exhaust ducts, and garbage chutes.

(3) Divide fire zones and control the fire walls and doors on the fire partition walls set up to control the building area of the zones. When it is difficult to install firewalls or fire doors in buildings, fire-resistant rolling shutter doors should be used instead, and water curtains should be used for protection.