Discuss the precautions for installing fire doors

1、 The installation of fire doors should adopt appropriate installation methods according to the type of fire door used.

2、 The door frame of fire doors can be fixed to the wall with expansion bolts, or iron parts can be embedded at the opening during wall construction, and welded firmly to the door frame connection during installation.

3、 Regardless of the connection method used between the door frame and the wall, there should be no less than 3 anchor points on each side and they should be firmly connected.

4、 When installing fire doors, they should be straightened and suspended first. After the size is appropriate, they should be temporarily fixed, corrected, and adjusted. Only after they are correct can they be connected and anchored.

5、 Require flexible sliding after installation of sliding doors; The swing door is easy to open and tightly closed.

6、 A door closer must be installed on the fire door, and a sequencer must be installed on the door opening.

7、 Hardware accessories such as handles and fire locks on fire doors must be complete.

8、 The gap with the ground level should not exceed 5mm.

Steel fire doors are moderately priced, but they are heavy, difficult to open, and have a monotonous style that is not aesthetically pleasing. Therefore, they are often used in industrial buildings and general grade civil buildings, or in areas with low aesthetic requirements and low pedestrian traffic (such as computer rooms, garages, etc.); On the contrary, wooden fireproof doors have a light weight, flexible opening and closing, good decorative appearance, and many patterns, but they are relatively expensive and are mostly used in mid to high end civil buildings or important occasions in buildings. The maximum opening size for each fire door is generally about 3.3m high, 1.1m wide - single leaf, and 3.0m double leaf. In engineering design, in addition to strictly following the requirements of the specifications for occasions, positions, widths, grades, and opening directions, attention should also be paid to:

Fire doors are generally located on evacuation routes (such as stairwells, front rooms, corridors, etc.). A slight negligence in the detailed design of building plans may cause the door leaf to obstruct the evacuation path and reduce its effective width after opening, violating the basic requirements for personnel evacuation. This phenomenon is particularly prominent at the turning points of evacuation routes and in high-rise residential buildings, and should be taken seriously and avoided.

The issue of evacuation exits leading to adjacent zones

Under certain conditions, when there are Class A fire doors leading to adjacent fire compartments, high-rise buildings allow only one safety exit per compartment. It should be noted that since fire doors can only be opened in one direction, if there is only one safety exit in two adjacent zones, two fire doors should be set up on the firewall and opened on both sides to meet the need for mutual evacuation between the two zones.

The most commonly used is a normally closed fire door, whose door leaf is always in a closed state. When personnel pass through, it is manually opened and closed by the back door leaf itself; If the push bolt hardware is installed, it is more conducive to accelerating the evacuation speed. However, normally closed fire doors installed in public passages have the disadvantages of affecting ventilation and lighting, obstructing vision, and inconvenient passage during normal use. For example, poor management often leads to the destruction and malfunction of door closers and opening and closing hardware, causing safety hazards. The emergence of normally open fire doors precisely solves the above problem. Usually, its door leaf is fixed in the open position by the door closer, and in case of a fire, the door closer automatically releases, restoring the same function as a normally closed fire door. Due to the addition of door stabilizers and automatic release systems, and sometimes the need for linkage with automatic alarm systems, the use of normally open fire doors will inevitably increase project costs. The current fire safety regulations do not have mandatory regulations on the opening and closing methods for fire doors. Designers can consider the height of the building's standards, the characteristics of the usage situation, the management needs of building users, and economic factors to choose and determine