How to solve the problem of fire door installation?

First, the problem of fire door installation

1. The opening direction does not meet the requirements and is not opened in the evacuation direction.

2. The fire end of the fire door does not meet the requirements. A Class B fire door or a Class C fire door shall be installed according to the design requirements.

3, less or no door closers installed, fire doors installed in the passages and stairways need to install door closers, such as no door closers can not meet the requirements of normally closed.

4. Install less hardware accessories. According to the size of the fire door, one of the larger fire doors should have 3 hinges installed, some only 2, some only have 1 hinge, and only 2 screws with 4 screw holes on a single page. Reduced fixing strength.

5, the middle seam is large, the two sides are connected, the separation is not strict, easy to pass the smoke, can not play the role of fire separation.

6. The distance from the ground is too large. According to the regulations, the distance between the inner door and the ground should be controlled within the range of 6-8mm, and some fire doors can be as long as 30-40mm.

7. The door joints are specified as 1.5-2.5mm, while some are up to 5 mm.

8. The steel door frame should be filled with cement mortar or rock wool. Some are not filled during installation and the interior is empty.

9, the fire door regulations must not use the swing door, and some deliberately changed to the swing door, and even the use of fire-resistant glass to make the swing door, does not meet the requirements, but also does not play the role of fire separation.

10. The hole on the side of the fire door or above the fire door is not blocked.

In view of the many problems existing in the installation of fire doors, how to make the installed fire doors play their due role, we must grasp the following links:

1. The fire compartment should be determined according to the type of building and the nature of the use.

Industrial buildings and warehouses, civil buildings and underground building fire zones have different areas of requirements, which should be determined according to the actual use of the building. For example, a high-rise civil building has a fire compartment of 1000 m2, a second type of building of 1500 m2, an underground building of 500 m2, and an ordinary building of 1-2 grades of 2,500 m2. Industrial buildings are classified according to production categories and storage items. There are provisions in the "construction regulations", which is why some buildings must have fire doors.

2. Determine the type of fire door according to the requirements of the site

According to the fire resistance limit, it is divided into three grades: A, B and C. The fire resistance time of Class A is 1.2 hours, the fire resistance time of Grade B is 0.9 hours, and the fire resistance time of Class C is 0.6 hours.

According to the use of materials, fire doors can be divided into steel fire doors, wooden fire doors, steel-wood hybrid fire doors.

According to the form of the door leaf, it can be divided into a flat fire door (wooden door), a flat fireproof glass door, a decorative door, and a glass wooden door.

According to the installation form: single fan flat fire door, double fan flat door (the middle seam has high and low seams, the middle seam has a sealing strip and the fire door is closed: Suzhou Industrial Park GlaxoSmithKline Pharmaceutical Co., Ltd. is such a door), side pull Door (Suzhou Industrial Park L'Oreal Cosmetics Co., Ltd.), electric fire door (Suzhou Industrial Park Management Committee, Suzhou High-tech Zone Epson Co., Ltd.).

3, according to the fire door function requirements, to do the right choice

In the firewall of the fire compartment and the independent use room, more fire doors are used, such as the fire control center, the pump house, the generator room, and the power distribution room.

Class B fire doors are used in stairwells, front rooms, etc.

Pipeline wells and cable wells use Class C fire doors.

4. According to the technical requirements, correctly install the fire door

The door frame and door leaf can be installed by the manufacturer or by the construction unit. The manufacturer is responsible for on-site guidance and correction. The door, door frame and assembly should be vertical, horizontal and square.

When installing the door frame and door leaf, pay attention to the opening direction of the door and open it in the direction of evacuation.

Steel door frame vertical frame and wooden door frame installation can be carried out according to the relevant drawings, and the embedded parts can be made.

The width of the installation of wooden fire doors and steel doors shall be as specified.

The fire door meets the stability, integrity and thermal insulation requirements along with the frame for a certain period of time. In addition to the role of ordinary doors, it also has a special function to prevent the spread of fire and the spread of smoke. Therefore, the correct installation of fire doors, in the event of a fire in the building, can effectively control the fire within a certain range, reduce fire damage, and create favorable conditions for personnel evacuation and fire fighting.