fire-proof door Fire prevention window It shall be divided into Class A, Class B and Class C, and its fire resistance, heat insulation and fire resistance integrity shall be greater than or equal to the following values: The height shall be 1.50h ； Class B shall be 1.0h; Class C: 0.5h 。—— Fire Protection door New Standard GB12955-2008, 4.5.1.2. Detailed interpretation
edit Interpretation of this clause in the specification:
5.4.1 Fire doors and windows are one of the measures for building fire separation, and are usually used on firewalls stairs The entrance and exit of the room or the opening of the tube well shall be able to isolate smoke and fire. Fire doors and windows play an important role in preventing the spread and spread of smoke and fire and reducing losses, so they must be strictly required. Japan's regulations on fire doors are relatively strict. Fire doors are divided into A and B, and the fire resistance of type A fire doors is limited to 1.50~2.00h; 0.50~1.50h for Type B fire door. According to the Code for Fire Protection Design of Buildings, the fire door is rated as Grade A, Grade B and Grade C. The lower fire resistance limit is specified, that is, 1.20h higher, 0.90h higher, and 0.60h higher. [1] Application position
edit Fire doors are generally used in the following parts:
1. Equipment room, ventilation air conditioner The machine room shall be separated from other parts by partition walls with a fire resistance rating of no less than 2.00h, and 1.50h floors and high fire doors. 2. The fire resistance limit of the partition wall of the room where the average weight of combustible materials in the basement exceeds 30kg/㎡ should not be less than 2.00h, and the door of the room should be a high fire door.
3. When the boiler room, transformer room, diesel generator room (and other rooms with high risk) must be opened on the firewall, high fire doors that can automatically close shall be set.
4. Each unit on and below the 18th floor is equipped with an evacuation staircase leading to the roof. The stairs between units are connected through the roof. Firewalls are set between units. The door is a high fire door. The width of the wall between windows and the height of the sill wall are more than 1.2 m and are non combustible unit type residential buildings. More than 18 floors, each unit is equipped with an evacuation staircase leading to the roof, and the adjacent unit stairs of each floor above 18 floors are connected through the balcony or concave gallery (the roof can be disconnected).
The materials of advanced fire doors are divided into steel and wood, so there are also steel fire doors and wood fire doors. In fact, no matter what level of fire doors are divided into steel, wood, steel wood, and other materials (see the national standard). It mainly depends on which kind the customer wants. The fire door is called advanced not because of the material but because of its fire resistance time. The fire resistance time of advanced fire door is not less than 1.2 hours. As long as the fire door meets this condition, it can be called advanced fire door. The filling material inside the advanced fireproof door is generally perlite, but the difference is that the thickness is different. Some of them also use the foam door core board, vermiculite fireproof board, MC composite material and other fireproof materials. The thickness of advanced fire door is generally 50mm
