The reinforced fire protection requirements of civil buildings with building height greater than 250m are defined.
In September 14th, the official account of the emergency management department issued a letter on the 2 national standards for construction (Draft) for the purpose of asking for the code for fire protection of building design.
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The Fire Rescue Bureau of the emergency management department read through the draft for comments on September 14, 2021.
A total of 83 articles were partially revised, including 1 article was deleted and 82 articles were revised or added.
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The first floor shall be expanded and closed The exit from the front room of the staircase or smoke proof staircase shall not be more than 30m away from the door leading to the outside.
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When the commercial service network protrudes from the main body of the residential building, it can still be considered as the commercial service network.
When expanding the separation between the front room area and other parts, it is not allowed to use fire shutter separation.
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The scope of children’s activity places has been clarified, and the requirements for the setting of fire-fighting facilities have been strengthened.
Fire protection requirements for civil buildings with a height greater than 250m ① Scissors staircase should not be used for evacuation stairs; ② for fire compartments with a building area of more than 2000 ㎡ on the same floor, there should be no less than 3 evacuation stairs; ③ the doors of hotel rooms should be class B fire doors; ④ fire walls and fire partitions should not be replaced by fire glass walls and fire rolling shutters; ⑤ climbing operation site of fire truck: it should be at least 1 / 3 of the perimeter of the main body of the high-rise and not less than one A fire truck climbing operation site shall be set at the bottom of each long side.
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Details are as follows: in this partial revision of the code for fire protection design of buildings, the basic fire protection technical requirements related to children’s activity places and civil buildings with a building height greater than 250m have been revised in accordance with the relevant standards of the Ministry of housing and urban rural development and the principles of relevant national fire protection regulations.
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Clearly expand the safe evacuation distance of the closed staircase and the front room on the first floor.
A fire lane is added: for buildings with a building height of more than 100m, the net width shall not be less than 7m and the clearance height shall not be less than 4.5m.
The net width requirements of evacuation door are adjusted.
The key points of the specification are as follows: 1.
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For rooms with at least two emergency exits in song and dance entertainment projection and entertainment venues in buildings with class I and II fire resistance rating, the straight-line distance from any indoor point to the emergency exit shall not be greater than 18m; when all the places are equipped with automatic sprinkler systems, the distance can be increased by 25%.
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Articles and descriptions of articles in technical standards for fire protection of highway tunnels (Draft for comments) ） 3.
When a building with class I and II fire resistance rating is adopted, it shall not exceed 3 floors; when a building with class III fire resistance rating is adopted, it shall not exceed 2 floors; when a building with class IV fire resistance rating is adopted, it shall be single storey; ② when it is set in a high-rise building, it shall be arranged on the first floor, second floor or third floor; it shall be set Set up independent emergency exit or evacuation stairs.
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Annex: 1.
The overhanging width of the fire cornices shall not be less than 1.0m, and the length shall not be less than the sum of the width of the opening on the exterior wall and the extension of 0.5m on both sides of the opening; when non combustible solid walls with a height of not less than 1.5m are used to replace them, the height of the solid wall on the floor shall not be less than 0.6 m.
The articles and descriptions of the two national standards (Draft for comments) are now open to the public for comments.
Building New requirements for exterior wall design of civil buildings with a height greater than 100m: Fire cornices shall be set between the upper and lower openings of the building exterior wall.
The deadline for feedback is October 13, 2021.
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Please fill in the form for comments on national standards for engineering construction (see Annex for details) and send it to the contact person.
The spacing of discontinuous climbing operation sites shall be reduced to 20m.
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According to the preparation and revision plan of national standards for Engineering Construction issued by the Ministry of housing and urban rural development, the Fire Rescue Bureau of the Ministry of emergency management organized Tianjin and Sichuan Fire Research Institute of the Ministry of emergency management to carry out the preparation and revision of two national standards for engineering construction, including code for fire protection design of buildings and technical standards for fire protection of highway tunnels.
The main contents include: 1.
Increase the indoor evacuation distance of song and dance halls and entertainment halls.
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The technical requirements for fire prevention of high-rise wood structure buildings are added.
The smoke exhaust pipe shall not pass through or be set in the staircase and its front room.
The fire truck climbing operation site shall be arranged in at least two directions.
Partially revised articles and descriptions of articles in code for fire protection design of buildings (Draft for comments) 2.
Specify children’s activity places Scope and fire protection requirements ① it shall be set in an independent building and shall not be set underground or semi underground.
The minimum net width of evacuation doors for public buildings and residential buildings is adjusted from 0.90M to 0.80M.
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Full text: Code for fire protection design of buildings Partially revised articles and explanation of articles (Draft for comments) Recent hot information recommendation, click to view: 1.
