With the development of the city, super high-rise buildings are also increasing. However, the sudden attack of disasters makes people pay attention to the safety of super high-rise buildings. According to relevant national regulations, public buildings with a building height of more than 100 meters should be provided with refuge floors. So, what is the refuge floor? Is the refuge floor that important? Today, Xiaobian will introduce it to you.
1、 What is the refuge floor?
Refuge floor refers to the floor used for emergency refuge in case of fire. Generally, refuge floors are set in high-rise buildings more than 100m. The refuge floor is a place for people to evacuate and take refuge in case of fire. The smoke proof stairs passing through the refuge floor shall be separated at the refuge floor, misplaced at the same floor or disconnected at the upper and lower floors, but all personnel must pass through the refuge floor before going up and down. So that people can escape safely in case of danger. According to its enclosure mode, the refuge layer is generally divided into three types: open refuge layer, semi open refuge layer and closed refuge layer.
2、 What kind of building has a refuge floor?
Generally speaking, there are certain requirements for buildings with refuge floors. One is the height requirement, specifically referring to high-rise buildings with a height of more than 100 meters; Another condition is that the building is a public building with a large flow of people. In case of an accident, the impact of casualties will be very serious, that is, those ultra-high buildings such as hospitals, shopping malls and office buildings.
3、 Which floor is the refuge floor?
The refuge floor mainly refers to the floor for evacuees, so the height of the refuge floor should be the height that can be reached by rescuers. According to relevant regulations, the first floor to refuge floor of high-rise buildings generally does not exceed 15 floors. The reason for this regulation is that the rescue capacity of most fire ladders is about 50m, and this height is roughly equivalent to the height of 15 floors.
4、 How big is the refuge floor?
The area of the refuge floor shall be arranged according to the regulations. Generally speaking, the net area of the refuge floor is set according to the requirements of 5 people per square meter. Considering that in case of fire, the asylum seekers may suffer from physical discomfort and lack of physical strength, the area provision of the refuge floor is very humanized. It is calculated according to 5 people sitting on the ground. People standing for a long time are very tired. They can sit down and rest.
5、 What are the facilities on the refuge floor?
Because the refuge floor has special functions, the refuge floor cannot be used for living and working in the regulations. However, it can be used to place some equipment, such as water pumps. At the same time, there must be structures for fire fighting, including fire elevator exit, fire hydrant, emergency telephone, sprinkler fire extinguishing equipment, emergency broadcasting, emergency lighting and other equipment. The vacant floor is a relatively safe place. There must be smoke prevention and control facilities. When people evacuate through the stairs, they can enter the refuge floor, rest halfway or wait for rescue, without being infringed by smoke.
6、 What are the design criteria for the refuge floor?
(1) A special design scheme is adopted for the refuge floor. The smoke ladder leading to the refuge floor shall be separated at the refuge floor, misplaced on the same floor or disconnected up and down. Personnel can go up and down only after passing through the refuge floor. Such a building structure is specially designed to meet the requirements of fire prevention.
(2) The refuge floor shall be equipped with sufficient fire-fighting tools, fire elevator entrance and exit, fire hydrant, fire reel, fire telephone, emergency broadcast, emergency lighting and fire special line telephone, as well as independent smoke prevention facilities. Such equipment can make rescue more convenient and the success rate of rescue will be improved to a certain extent.