One、What are the standards for fire door height?
Generally, fire doors with dimensions within 1800mm x 2400mm can be marked with fire door identification. For Class A fire doors, the maximum height can be 2700mm. However, the clear height for doors with a prominent window must be at least 2400mm. Therefore, non-standard fire doors refer to fire doors with dimensions exceeding 1800mm x 2400mm.
Two. Fire doors are typically installed in what locations?
1、The fire-resistant door in the fire control room should be installed with a fire-resistant door. The fire control room refers to a space located between the evacuation corridor and staircase or fire elevator room in high-rise buildings, designed for fire protection, smoke prevention, and to alleviate evacuation pressure. Fire acceptance regulations require that evacuation corridors and staircase rooms must be separated by fire-resistant doors, typically using Class B fire-resistant doors.
2. Doors leading to the outdoor staircase should be fire-resistant doors, with the opening direction facing outwards, facilitating evacuation and escape. This area also requires the use of Grade 1 fire-resistant doors. Considering the long-term exposure to wind, sun, and theft prevention, it is recommended to use steel fire-resistant doors for outdoor staircases.
3. Fire-resistant doors, Class A fire-resistant doors with a fire resistance time of 1 hour, must be installed on the doors between the stairwell and the anteroom, and between the anteroom and the evacuation passage.
4、In densely populated public areas, such as warehouses, factories, and multi-story Class C factories, enclosed stairwells must have access doors that are Class II fire-resistant doors.
5. Fire escape elevators, machine rooms, and adjacent elevator/machine rooms must be separated by walls that require door openings. These doors must meet the fire resistance rating of 1.5 hours and be of Class A.
6. When opening doors in firewalls, they must be installed as Class A fire doors. Similarly, when creating evacuation passages within fire-rated zones, Class A fire doors must be used, and they should be designed as permanently open (constant-open) doors.
7. The doors of electrical and telecommunication pits within the building should be Class III fire-resistant doors. Most commonly, wooden fire-resistant doors are used.
8. When basements, semi-basements, and upper floors share a common staircase, the staircase for basements and semi-basements should be separated by a partition wall. If doors are opened on the partition wall, fire-resistant doors must also be installed. Typically, Class A fire-resistant doors are used.