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There are regulations for installing fire doors, do not replace them easily.
For the installation of household fire doors, you can refer to the relevant regulations. There are relevant regulations on the installation of household fire doors in the 'Residential Design Code of Jiangsu Province': each of the seventh to ninth floors For tower dwellings with a building area of u200bu200bno more than 650 square meters and the distance between each door and stairwell of no more than 15 meters, if there is no enclosed stairwell, the door must be a Class B fire door; unit dwellings with seven to nine floors If there is no open stairwell leading to the roof in the unit, class B fire doors should be adopted for the door of each household; there is a fire wall between the units and the doors are Class A fire doors; the doors of high-rise residential buildings must be opened directly due to difficulties In the front room, part of the doors opening to the front room should be Class B fire doors; the inner walls of the front room of the stairwell and smoke-proof stairwell except for evacuation doors leading to the public aisle and Class A or B fire protection The door is a household door, no other doors, windows, or openings should be provided. But these are only regulations on house design, and there are no specific regulations on whether residents can replace their own fire doors.
Professionals advise residents to check whether the door is a fire door before replacing the door of their own home, and do not leave a fire hazard in their home. Fireproof door Fireproof door refers to a door that can meet the requirements of fire stability, integrity and heat insulation within a certain period of time. Fire doors are generally made of non-combustible materials or products as door frames, door leaf frames, door leaf panels. If the door leaf is filled with materials, it is filled with non-toxic and harmless fire-proof and heat-insulating materials, and equipped with fire-proof hardware accessories. Certain fire-resistant doors.
An important index required by the fire door test is how long the door can burn in the fire. This index indicates whether the door is a fire door and its fire resistance rating. The fire resistance level of fire doors is divided into three grades: A, B, and C. The fire resistance time of Class A fire doors is not less than 1.5 hours, the fire resistance time of Class B fire doors is not less than 1 hour, and the fire resistance time of Class C fire doors is not less than half. hour.