What is the definition of a multi storey building, how to divide a multi storey building and a high

A multi-storey building refers to the height of the building.

Buildings larger than 10 meters, less than 24 meters (10 meters "multi-storey building height< 24 meters), and the number of floors is greater than 3 floors, less than 7 floors (3 floors "Floors < 7 floors"). However, it is common to think of a building with more than two floors as a multi-storey building.

General Principles for the Design of Civil Buildings in China

GB 50352-2005) divides residential buildings into low-rise residential buildings with one to three floors, multi-storey residential buildings from four to six floors, and medium and high-rise residential buildings with seven to nine floors.

10 storeys and above are high-rise residential buildings.

Except for residential buildings, civil buildings with a height of no 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 of more than 100m are super high-rise buildings.

China's General Principles for the Design of Civil Buildings (GB 50352-2005) divides residential buildings into low-rise residential buildings according to the number of floors: low-rise residential buildings with 1st to 3rd floors, multi-storey residential buildings with 4th to 6th floors, medium and high-rise residential buildings with 7th to 9th floors, and high-rise residential buildings with 10th to 10th floors. Except for residential buildings, civil buildings with a height of no 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 of more than 100m are super high-rise buildings.

Supplement: From the perspective of architectural expertise: multi-storey building refers to a building with a height of more than 10 meters and less than 24 meters (1 multi-storey building with a height of 0 meters and a height of 24 meters), and the number of building floors is greater than or equal to 3 floors and less than or equal to 7 floors (3 floors and 7 floors).

However, it is common to think of a building with more than two floors as a multi-storey building. In this way, you should be describing a multi-storey building.

The floor area of the second floor is 912-163 = 749 square meters.

I would like to add: my understanding is that the common definition of single-storey and multi-storey is not suitable for calculating the floor area and distinguishing whether it is a multi-storey building.

According to the definition of the General Principles for the Design of Civil Buildings (GB 50352-2005), you are describing a low-rise or single-storey dwelling. The following terms apply to the calculation of the floor area:

The second floor should be a cloister:

2 0 7 cloister

In the foyer and hall of the building, a circular corridor is set up on the second floor or above.

Area calculations apply 3 0 7

3 0 7 The floor area of the foyer and hall of the building is calculated on the basis of one floor. When there is a corridor in the entrance hall and hall, it should be calculated according to the horizontal area of its structural bottom plate. If the floor height is above and above, the full area should be calculated; If the floor height is insufficient, 1 2 area should be calculated.

The floor area is the distance between the axes of the exterior walls, so the floor area of the second floor is still 912 square meters.

It should be a multi-storey building!

Hollowing out is not counted as a building area, nor is it counted as a fire prevention area, this is a multi-storey building.

According to the current norms:

1 Residential buildings are classified according to the number of floors: 1st to 3rd floors are low-rise residential buildings, 4th to 6th floors are multi-storey residential buildings, 7th to 9th floors are medium-rise residential buildings, and 10th to 10th floors or more are high-rise residential buildings;

2. Single-storey and multi-storey buildings with a height of no more than 24m for civil buildings other than residential buildings, and high-rise buildings for buildings greater than 24m (excluding single-storey public buildings with a building height of more than 24m);

3. Civil buildings with a building height of more than 100m are super high-rise buildings.

According to the national standard of the People's Republic of China "Residential Design Code".

Article 1 Dwellings are divided according to the number of floors as follows:

1. Low-rise residential buildings are one to three floors;

2. Multi-storey dwellings are four to six storeys;

3. Medium and high-rise residential buildings are seven to nine floors;

4. High-rise residential buildings are 10 floors or more.

According to the Ministry of Urban and Rural Construction and Environmental Protection of the People's Republic of China "General Principles for Civil Building Design".

Article The division of the height and number of floors of civil buildings.

1. Residential buildings are divided into the following according to the number of floors: 1 3 floors are low-rise; 4 6 layers are multi-layered; 7 9 floors are medium and high-rise; Floors 10 or above are high-rise.

2. Public buildings and comprehensive buildings with a total height of more than 24m are considered high-rise buildings (excluding single-storey main buildings with a height of more than 24m).

3. When the height of the building exceeds 100m, both residential and public buildings are super high-rise.

In addition, the concept of small high-rise is proposed by the developer, and the actual specification does not define the small high-rise. The positioning of small high-rise floors on the 8th-11th floors is mainly due to the reason for stairs and elevators.

Because 8-11 storey houses can not have enclosed stairwells, and can not have fire elevators. At the same time, it is necessary to set up ordinary passenger elevators. This is different from the requirement that there is no elevator for houses with 8 floors or less, and from the requirement that houses with 12 floors and above need to have enclosed stairwells and fire elevators.

According to the current regulations:

1. Residential buildings are classified according to the number of floors: the first to the third floor are low-rise residential buildings, the fourth to inner six floors are multi-storey residential buildings, the seventh to ninth floors are medium and high-rise residential buildings, and the tenth and more floors are high-rise residential buildings;

2. Single-storey and multi-storey buildings with a height of no more than 24m for civil buildings other than residential buildings, and high-rise buildings for buildings greater than 24m (excluding single-storey public buildings with a building height of more than 24m);

3. Civil buildings with a building height of more than 100m are super high-rise buildings.

Multi-storey buildings generally refer to four-storey sheds to six-storey buildings.

China's General Principles for the Design of Civil Buildings (GB50352-2005) divides buildings into low-rise buildings with 1st to 3rd floors, multi-storey buildings with 4th to 6th floors, medium and high-rise buildings with 7th to 9th floors, and high-rise buildings with 10 floors and above.

The stiffness and seismic performance of the superstructure of multi-storey buildings are very important, and the corresponding foundation selection has become an important factor affecting the structural safety and building economy. Through a large number of engineering practices, it is found that some buildings are not suitable for the superstructure in the selection of the foundation, and are not very coordinated with the foundation conditions, and can not cooperate closely and work together in the spatial coordination of the foundation, foundation and superstructure to play a greater and more adequate role.

Considerations for the selection of multi-storey buildings

1. The problem of air quality.

The distance between 30 and 40 meters from the ground is the floating and sinking floor, that is, the floor that has a great impact on physical health, and the corresponding floor is the 8th to 11th floor. Avoid these floors, the air quality on the other floors is okay.

2. Lighting problems.

Some buyers think that the high floor is equal to good lighting, but in fact, the higher floor will indeed have an advantage in lighting, but the height of the surrounding buildings, the spacing between the buildings, and the distribution of house types are also important factors affecting lighting.

3. The problem of noise impact.

The noise of the houses in the community is generally relatively small, and the higher the floor, the less noise. However, the noise of the house facing the street is very loud, and the floor must be selected higher.

So what is a multi-storey building? Point multi-storey building refers to a building with a building height greater than 10 meters, less than 24 meters (10 meters Xunshen multi-storey building height < 24 meters), and the number of building floors is greater than 3 floors and less than 7 floors (3 floors < 7 floors). However, it is common to think of a building with more than two floors as a multi-storey building.

Advantages: It is more economical than low-rise residential buildings in terms of land occupation, and at the same time shorter than high-rise residential construction periods, which can be completed within one year of construction;

There is no need to increase investment in elevators, high-pressure water pumps, public walkways, etc., as is the case with high-rise residences;

The structural design is mature, usually using brick-concrete structure, building materials can be produced locally, can be industrialized and standardized in large quantities, the project cost is low, and it is easy to be used.

Buyers are receptive.

Disadvantages: The living conditions on the ground floor and top floor are not ideal;

Due to the finalization of design and construction technology, it is difficult to innovate in the structure, building materials and layout of multi-storey, resulting in multi-storey residential building façade and architectural style.

The rigidity of the grid and the lack of Tongchang Dou changes.

What are the structural definitions of multi-storey and high-rise buildings?

With the development of China's economic situation, the number of high-rise buildings in large and medium-sized cities has increased rapidly, and multi-high-rise buildings have become the most common type of housing in industrial and civil buildings. In recent years, China's high-rise buildings have developed very rapidly, and the number of high-rise buildings built in various places has generally increased. There are more than 100 high-rise buildings with a height of more than 150 meters.

In many countries and regions in the world, the definition of high-rise building structure is more than 10 floors. In order to adapt to the development situation of high-rise buildings in China and adapt to the definition of many countries in the world, China's "Technical Regulations for Concrete Structures of High-rise Buildings" JGJ 3 2002 stipulates that buildings with 10 floors and more than 10 floors are high-rise building structures. Considering that the number of floors of some reinforced concrete structure buildings does not reach 10 floors, but the height of the houses is relatively high, it is stipulated that the civil buildings with a height of more than 28 m are also high-rise building structures, and the high-rise buildings with the conventional height are called Class A high-rise buildings, and the high-rise buildings with a height exceeding the height limit of Class A are called high-rise buildings with Class B height.

There is a certain difference between the concepts of high-rise buildings and high-rise building structures, and there are different definitions for housing buildings in different standards in China, such as the "Code for Fire Protection Design of High-rise Civil Buildings" stipulates that residential buildings with 10 floors and above and public buildings with a height of more than 24m are the boundaries of multi-rise fire protection design. Height and number of floors are the two main indicators of high-rise building structure, which change with the development of China's economic situation and the gradual increase of engineering experience and scientific research achievements accumulated by the engineering community on reinforced concrete structure system. For example, the "Technical Regulations for Concrete Structures of High-rise Buildings" JGJ 3-1991 stipulates that high-rise civil building structures with 8 floors and above are applicable boundaries for multi-high-rise building structures, and the current "Technical Regulations for Concrete Structures of High-rise Buildings" is adjusted to 10 floors and above for multi-high-rise buildings.