1 China's General Principles for the Design of Civil Buildings (GB 50352—2005) divides residential buildings into low-rise buildings on the first to third floors, multi-storey buildings on the fourth to sixth floors, medium-high-rise buildings on the seventh to ninth floors, and high-rise buildings on the tenth and above floors. Except for residential buildings, civil buildings with a height of not more than 24m are single-storey and multi-storey buildings, and those with a height of more than 24m are high-rise buildings (excluding single-storey public buildings with a building height of more than 24m); Civil buildings with a building height greater than 100m are super high-rise buildings.

2 From the perspective of architecture, multi-storey buildings refer to buildings with a height greater than10m and less than 24m (10m <; Height of multi-storey building <: 24 meters), and the number of building floors is more than 3 and less than 7 (3 floors <; Number of layers <: 7-story building.

3 In the new "High Code", namely "Technical Specification for Concrete Structures of High-rise Buildings" (JGJ3－2002), it is stipulated that reinforced concrete structures with 10 floors and 10 floors or more or with a height exceeding 28m are called high-rise building structures. When the building height exceeds 100m, it is called a super high-rise building.

Extended data:

High-rise buildings refer to residential buildings with a height of more than 27 meters and other non-single-storey civil buildings with a height of more than 24 meters.

In the United States, 24.6m or more floors are considered as high-rise buildings; In Japan, 3 1m or 8 floors and above are regarded as high-rise buildings; In Britain, buildings equal to or greater than 24.3m are regarded as high-rise buildings. China's "High Code" (JGJ 3-20 10) 1.0.2 stipulates that the concrete structures of 10 floors and above 10 floors or houses with a height of more than 28m and other high-rise civil buildings with a height of more than 24m are high-rise buildings.

In China, the old code stipulated that all buildings below 8 floors were called multi-storey buildings, but at present, those close to 20 floors were called medium-high buildings, those close to1000 m around 30 floors were called high-rise buildings, and those with 50 floors above 200m were called super-high buildings. In the new "High Code", namely "Technical Specification for Concrete Structures of High-rise Buildings" (JGJ3－2002), it is stipulated that reinforced concrete structures with 10 floors and 10 floors or more or with a height exceeding 28m are called high-rise building structures. When the building height exceeds 100m, it is called a super high-rise building? .

In China, elevators are required for buildings on the 6th floor and above, and there are fire protection codes for buildings on the 10 floor and above, so China's General Principles for Civil Building Design (GB 50352—2005).

The main problems are:

(1) on the issue of urban economic benefits and environmental benefits, we should follow the location designated by the urban planning department and control the height of construction, but not completely according to the needs of the building itself.

(2) Due to the increase of stress in high-rise buildings, the level of equipment and decoration must be improved, and the construction difficulty increases, so the cost must be much higher than that of multi-storey buildings. Therefore, it is necessary for professional designers to cooperate closely to make the plane layout reasonable, improve the utilization factor, achieve simple structure, light weight, easy installation and reduce the cost comprehensively.

(3) the most prominent high-rise building is the fire safety design, and all professional designers should strictly abide by the provisions of the code for fire protection design of high-rise buildings.

Multi-storey buildings refer to buildings with a height greater than10m and less than 24m (10m <; Height of multi-storey building <: 24 meters), and the number of building floors is more than 3 and less than 7 (3 floors <; Number of layers <: 7-story building. However, buildings with more than two floors are generally summarized as multi-storey buildings.

References:

Baidu Encyclopedia-Multi-storey building? Baidu encyclopedia-high-rise building