Dry goods || How to choose a fire door?
Many users can only say when they need a fire door when purchasing, as to what kind, what material, what grade, what style and even how big the size is, how to open it is almost a matter of asking, some know some but not detailed. This article mainly summarizes the following points, welcome to add.
01 fire door fire resistance level
Class A fire door
1. The highest level of fire separation (firewall, fire compartment, atrium, etc.)
2. Doors in crowded places (cinema, auditorium, etc.)
3. Important Treasury Doors (Confidential Room, Archive Room, etc.)
4. Doors for fire-related equipment (transformer room, power distribution room, etc.)
5. Doors for important equipment not related to fire protection (air-conditioning room, freezer room, etc.)
Class B fire door
1. Open the door on the safety exit (closed stairwell, smoke-proof stairwell and front room, etc.)
2. Halls and room doors of entertainment buildings (KTV, amusement hall, etc.)
3. Room or place with high risk of fire house (kitchen in public buildings, warehouses attached to civil buildings, etc.)
4. Doors (rooms, delivery rooms, etc.) used by vulnerable groups
5, the same function control scale division (hospital nursing unit, etc.)
6. Equipment room (fire control room, etc.)
7. When the distance between the doors and windows on both sides of the fire separation wall is insufficient, alternative measures
8. For residences larger than 54m and less than 100m, each household has a room door of an evacuation function room, and external windows.
Class C fire door
1. Shaft protection (pipe well door, etc.)
2. The internally connected doors and the doors to some equipment rooms (such as transformer rooms) that open to the outside
02 fire door material
There are many types of fire doors, according to materials: wood fire doors, steel fire doors, steel wood fire doors, other fire doors, etc .;
Wooden fire door
Use flame-resistant wood or flame-resistant wood products as the door frame, door leaf skeleton, and door panel. If the inside of the door leaf is filled with material, it is filled with non-toxic and harmless fire-proof insulation materials, and it is equipped with fire-resistant hardware accessories. Performance door.
Steel fire door
The door frame, door frame and door panel are made of steel material. If the door is filled with material, it is filled with non-toxic and harmless fire-proof insulation materials, and it is equipped with fire-resistant hardware and has a certain fire-resistant door.
Steel wood fire door
Use steel and flame-resistant wood materials or flame-resistant wood products to make door frames, door leaf skeletons, and door panels. If the inside of the door leaf is filled with material, it is filled with non-toxic and harmless fire-proof insulation materials, and is equipped with fire-resistant hardware accessories. Door with certain fire resistance.
Fire doors of other materials
Inorganic non-combustible materials other than steel, non-combustible wood or non-combustible wood products are used to make door frames, door leaf skeletons, and door panels. A non-toxic and harmless fire-proof and heat-insulating material, which is equipped with fire-resistant hardware accessories and has a certain fire-resistant door.
There are access control fire doors, indoor fire doors, explosion-proof fire doors, quick-close fire doors, and quick-open fire doors in case of fire;
There are electronic fire doors, multifunctional fire doors with built-in fire door closers, etc .;
According to the open state, it is divided into normally closed fire doors and normally open fire doors.
Normally closed fire doors are generally composed of fire door leaves, door frames, door closers, sealing strips, etc. Double or multiple normally closed fire doors are also equipped with sequencers. Normally closed fire doors usually do not require the electrical professional to provide self-control design, but there are some special cases such as: normally closed fire doors on evacuation routes. When some large construction parties have management requirements such as anti-theft, they should be designed in cooperation with the electrical professional. May comprehensively reduce security risks.
Normally open fire door, in addition to all accessories with a normally closed fire door, a fire door release switch must be added, and an automatic control design must be provided by an electrical professional. It is usually applied to evacuation routes with a lot of people and logistics.
03 Fire door style and opening direction
The style mentioned here mainly refers to the door shape, single-door, double-door, child-mother door, etc., in our practice, it is determined that a single-open fire door with a width of less than 1 meter can be made. The shape of a son-in-law door. If there is a place that is blocked by a building, there is limited open space, and the other side is wide, but because the door is too wide, it is too large to open a single door, which affects both access and aesthetics. The shape is large on one side and small on the other. The ratio is usually 3/7, and other ratios can be made according to actual needs.
The opening direction of the fire door mainly refers to whether the single door opens to the left or to the right. Our general identification method is that people stand outside the door. This specifically explains that all fire doors are opened outward, and it is not allowed to open inward. Yes, the opening direction of the fire door must be the direction facing the evacuation passage.
So when the door opens outwards, people stand outside the door, and people face the door to see the direction of the hinge (or hinge). If the hinge is on the left, the door opens on the right, it is called the right door. The size of both sides.
04 Surface of wooden fire door
When the wooden fire door leaves the factory, it is not the same color and pattern as we saw on the Internet. Normal wooden fire doors are all original wood colors when they leave the factory, that is, the color of the wood. The colors we see on the Internet are specially made according to the needs of users. They can be used for paint and decorative panels. However, the logs used in normal buildings are usually shipped from the factory. There are only some KTVs, shopping malls, hotels, and leisure and entertainment venues. Decorative doors are custom made for aesthetics.
05 fire door atlas
The fire doors, fire windows, and fire shutters we currently use are all based on the National Building Standard 03j609 Atlas.
06 Fire Door Type Certificate
Check whether the manufacturer's qualifications are complete and whether there is a type approval certificate. Check whether the physical object is consistent with the test report. Now it is required that all fire door products leaving the factory must be 3c certified products.