This article alone is enough for the safety exits and evacuation doors of civil air defense projects!

1. Safety exits

1. The number of safety exits in each fire protection zone shall comply with one of the following regulations:

1) Each fire protection zone The number of safety exits should not be less than 2.

2) When two or more fire protection zones are adjacent and the fire door set on the firewall between the adjacent fire protection zones is used as a safety exit, the safety exit of the fire protection zone shall comply with the following regulations:

For commercial business halls, exhibition halls and other places with a fire protection zoning area greater than 1,000 square meters, the number of evacuation stairwells or refuge walkways leading to the outdoors or directly to the outdoors shall be no less than 2.

For commercial business halls, exhibition halls and other places with a fire protection zone construction area of ??no more than 1,000 square meters, the number of evacuation stairwells or refuge walkways leading to the outdoors or directly to the outdoors shall be no less than 1.

In a fire protection zone, the sum of the safety exit widths of evacuation stairwells or refuge walkways that lead to the outdoors or directly to the outdoors should not be less than 70% of the total width of the safety exits specified in Article 5.1.6 of this code. %. ?

2. The building area is not more than 500 square meters, and the height difference between the indoor floor and the outdoor entrance floor is not more than 10m, and the fire protection zone that accommodates no more than 30 people is set up only for lighting or entrance. If there is a shaft for wind use, and there is a metal ladder in the shaft that leads directly to the ground, and a normally closed fire door no lower than Class B is installed at the fire compartment leading to the shaft, only one evacuation stairwell or refuge walkway that leads directly to the outside may be provided. Safety exit; a fire door connected to the adjacent fire compartment can also be set up. ?

3. For fire protection zones with a building area of ??no more than 200 square meters and no more than 3 people regularly staying there, only one fire door leading to the adjacent fire protection zone can be installed.

4. The safety exits of each fire protection zone should be arranged in different directions; when conditions require them to be arranged in the same direction, the horizontal distance between the nearest edges of the two safety exits should not be less than 5m.

2. Evacuation door

1. When the building area of ??the room is not larger than 50 square meters, and the number of people staying regularly does not exceed 15, an evacuation exit can be set up.

2. Evacuation doors in the building should be arranged dispersedly, and the horizontal distance between the nearest edges of two adjacent evacuation doors in each room should not be less than 5m.

3. Safe evacuation distance

1. The distance from the farthest point in the room to the room door should not be greater than 15m; the maximum distance from the room door to the nearest safety exit: the hospital should be 24m; hotels should be 30m; other projects should be 40m. The maximum distance between rooms located on either side or at the end of a pocket walkway shall be half of the corresponding distance above.

2. The straight-line distance from any point in the auditorium, exhibition hall, multi-functional hall, restaurant, business hall and reading room to the nearest safety exit should not be greater than 30m; when the fire protection zone is equipped with automatic When installing a sprinkler system, the evacuation distance can be increased by 25%.

3. The evacuation of singing and dancing entertainment venues should comply with the following regulations:

1) It should not be arranged on both sides or at the end of the bag-shaped walkway. When it must be arranged on the bag-shaped walkway On both sides or at the end of the building, the distance from the evacuation door of the farthest room to the nearest safety exit should not be greater than 9m; the building area of ??a hall or room should not be greater than 200 square meters.

2) For halls and rooms with a construction area greater than 50 square meters, there should be no less than 2 evacuation exits.

IV. Stairs

1. For civil air defense projects with the following public activity places, when the height difference between the indoor ground on the ground floor and the outdoor entrance and exit floors is greater than 10m, fire protection should be set up. Smoke stairwell; when there are two underground floors, and the height difference between the indoor ground on the second underground floor and the outdoor entrance and exit floor is not greater than 10m, a closed stairwell should be set up.

1) Cinemas and auditoriums.

2) Hospitals and hotels with a building area greater than 500 square meters.

3) Shopping malls, restaurants, exhibition halls, public entertainment venues, and fitness and sports venues with a construction area greater than 1,000 square meters.

2. Enclosed stairwells should use fire doors not lower than Class B; the ground exits of enclosed stairwells can be used for natural lighting and natural ventilation. When natural ventilation cannot be used, smoke-proof stairwells should be used. .

3. The evacuation stairwell of the civil air defense basement should be separated from other parts by a partition wall with a fire resistance rating of not less than 2h on the first floor of the main building and should lead directly to the outdoors; when it is necessary to use a partition wall When opening the door, a fire door not lower than Class B should be used.

4. Stairwells should not be used exclusively between civil air defense basements and above-ground floors; when stairwells must be used, a fire resistance limit of not lower than the entrance to the first floor and basement should be set Separated by a 2h partition wall and a fire door not lower than Class B, and there should be obvious signs.

5. The area of ??the front room of the smoke-proof stairwell should not be less than 6 square meters; when the front room is shared with the fire elevator room, its area should not be less than 10 square meters.

5. Places not allowed in civil air defense projects

1. Nursing rooms, kindergartens, nurseries, amusement halls and other places for children and disabled people.

2. Places where liquefied petroleum gas, flammable gas with a relative density (ratio to air density) greater than or equal to 0.75, and liquids with a flash point less than 60°C are used as fuel.

3. Oil-immersed power transformers and other oil-immersed electrical equipment.