Fire Door Precautions

There are many types of fire doors, including glazed fire doors, stainless steel fire doors, and ordinary steel fire doors. However, the installation methods are basically the same and depend on the situation on site. There are some common installation parameters that must be paid attention to.

1. The installation of fire doors should be based on the type of fire doors used, and appropriate installation methods should be adopted.

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

3. No matter what connection method is adopted 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 the fire door, it should be straightened and hoisted first. After the size is appropriate, it should be temporarily fixed, corrected and adjusted, and the connection and anchoring can be carried out after it is correct.

5. It is required that the sliding door can be pushed and pulled flexibly after installation; the swing door is easy to open and closed tightly and firmly.

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

7. Hardware accessories such as handles and fire locks on the fire door must be complete.

8. The gap with the ground plane should be no more than 5mm.

The price of steel fire doors is moderate, but they are self-heavy, laborious to open, monotonous in style, and not aesthetically pleasing, so they are mostly used in industrial buildings and general-grade civil buildings, or in parts of buildings that have low requirements for aesthetics and usually have a small flow of people (such as On the contrary, wooden fire doors have light weight, flexible opening and closing, good decorative appearance and more patterns, but higher prices, and are mostly used in medium and high-grade civil buildings or important occasions in buildings . Generally, the maximum opening size for each fire door is about: 3.3m in height, 1.1m in width for single leaf, and 3.0m for double leaf. In engineering design, in addition to setting fire doors in strict accordance with the occasions, positions, widths, grades and opening directions required by the specifications, attention should be paid to:

Fire doors are generally located on evacuation paths (such as stairwells, front rooms, walkways, etc.). A little attention to detail in the design of the building plane may cause the doors to open and block the evacuation path, reduce its effective width, and violate the basic requirements for personnel evacuation. . This phenomenon is particularly prominent in the turning points of evacuation paths and high-rise residential buildings, and should be paid attention to and avoided.

Evacuation exits to adjacent partitions

Under certain conditions, when there are Class A fire doors leading to adjacent fire compartments, only one safety exit is allowed in each compartment in high-rise buildings. It should be noted that since the fire door can only be opened in one direction, if there is only one safety exit for the two adjacent partitions, two fire doors should be set on the firewall and opened to both sides to meet the requirements of the two partitions. the need to evacuate from each other.

The most commonly used fire door is the normally closed fire door. Its door leaf is always in a closed state. When people pass through, it is manually opened and closed by the rear door leaf; if the push latch hardware is installed, it is more conducive to speed up the evacuation. However, the normally closed fire doors located in the public passages have the disadvantages of affecting ventilation and lighting, blocking the line of sight, and inconvenient passage during normal use. . The normally open fire door that appears just solves the above problem. Usually, its door leaf is fixed in the open position by the door stopper, and the door stopper is automatically released in the event of a fire, restoring the same function as the normally closed fire door. Due to the addition of a door locker and an automatic release system, sometimes linked with an automatic alarm system, the use of normally open fire doors will inevitably increase the project cost. The current fire protection code does not mandate the opening and closing method of fire doors, which can be determined by the designer considering the standard of the building, the characteristics of the use occasion, the management needs of building users and economic factors.