What are the definitions of multi-layer and high-level?

How to define multi-storey, small high-rise and high-rise?

The biggest classification standard is based on the height of the floor. Multi-storey residence: Multi-storey residence refers to a building with a height of10m and a height of less than or equal to 24m, generally 4-8 floors. Small high-rise residential buildings: We can often hear salespeople introduce small high-rise products. There is no professional academic regulation for this product type, mainly due to the requirements of fire protection code for architectural design. Houses above 1 1 floor need two elevators, so considering the cost factor in the planning of the community, residential forms with high floor area ratio and only one elevator are often designed, which is the birth of small high-rise buildings. Of course, because people's requirements for the quality of life are gradually improving, even small high-rise residential buildings will be equipped with two elevators, but they still use the original name, representing a building type with better living quality and higher land use efficiency. The detailed definition of small high-rise building is: generally, * * residential buildings with 9 floors to 1 1 are called "small high-rise buildings", which have the characteristics of multi-storey and high-rise. The residential building with the top floor 12 floor is also considered as a small high-rise building, which is equivalent to ordinary small high-rise buildings in terms of fire protection code design. High-rise residence: High-rise residence generally refers to residential buildings with a total height of 12 floors or more. There are mainly three types: plate building, tower building and tower connecting plate. Super-high-rise residential building: A building with a height of1100m2 and more than 30 floors is called a super-high-rise building. Generally speaking, there are not many super high-rise buildings with pure houses. It may assume the functions of some businesses or hotels, and become a complex with universal significance to meet the high-end needs of residents.

What are the definitions and differences between multi-storey buildings and high-rise buildings?

China's General Principles for Civil Building Design (GB 50352—2005) divides residential buildings into low-rise buildings with one to three floors, multi-storey buildings with four to six floors, medium-high-rise buildings with seven to nine floors, and high-rise buildings with ten floors or more. 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 (except single-storey public buildings with a building height of more than 24m); Minfa Building with a building height greater than 100m is a super high-rise building.

How to define high-rise residence and multi-storey residence?

Multi-storey refers to 2-9-storey houses and other civil buildings with a height of no more than 24m. Code for Residential Design refers to residential buildings with 4-6 floors. High-rise China's General Principles for Civil Building Design (JG37-87) divides residential buildings into: 1 ~ 3 floors are low-rise; 4 ~ 6 layers are multi-layered; 7 ~ 9 floors are middle and high floors; 10 and above are high-rise buildings. Public buildings and comprehensive buildings with a total height of more than 24 meters are high-rise, but single-story buildings with a total height of more than 24 meters are not high-rise buildings. /kloc-the civil buildings over 0/00 meters are super high-rise buildings.

What do you mean by multi-storey and high-rise real estate?

According to the national standard of People's Republic of China (PRC) "Code for Residential Design"

GB 50096— 1999(2003 edition)

1.0.3 residential buildings are divided into the following floors:

First, the first to third floors of low-rise residential buildings;

Two, multi-storey residential four to six floors;

High-rise residential buildings with three or seven to nine floors;

Four, ten floors and above high-rise residential buildings.

According to the standard of People's Republic of China (PRC) Urban and Rural Construction and Environmental Protection Department "General Principles for Civil Building Design".

JGJ 37-87 (Trial)

Article 1.0.5 division of height and floor of civil buildings

1. Residential buildings are divided into: 1 ~ 3 floors are low floors; 4 ~ 6 layers are multi-layered; 7 ~ 9 floors are middle and high floors; The floors above 10 are high-rise buildings.

Two, public buildings and comprehensive buildings with a total height of more than 24m are high-rise buildings (excluding single-storey main buildings with a height of more than 24m).

3. When the building height is greater than 100m, both residential buildings and public buildings are super high-rise.

In addition: the concept of small high-rise was put forward by developers, and the actual specification did not define small high-rise. The 8- 1 1 floor locates small high-rise buildings, mainly considering the reasons of stairs and elevators. Because the 8- 1 1 floor residence can be without closed stairwells and fire elevators. At the same time, ordinary passenger elevators must be set up. In this way, there is no elevator in residential areas below 8 floors, and at the same time, there is no requirement that residential areas above 12 floors need to close stairwells and fire elevators.

The Code for Fire Protection Design of Buildings and the Code for Fire Protection Design of High-rise Civil Buildings stipulate that buildings with 10 floors and above are high-rise buildings.

So the small high-rise is not a real high-rise. It includes both 8-9-storey multi-storey buildings and10-1storey high-rise buildings.

What are the concepts of high-rise, small high-rise and multi-storey respectively?

In 1987, the general principles for the design of civil buildings (for trial implementation), the country clearly stipulated the design of the height and floors of civil buildings: 1-3 floors are low-rise residential buildings; 4-6 floors are multi-storey houses; 7-9 floors are medium and high-rise residential buildings; 10 or above is a high-rise residential building.

1. Low-rise residential buildings are characterized by few floors, convenient connection between upper and lower floors, compact layout, simple structure and flexible plane combination, which can adapt to both large and high requirements and low-standard living conditions.

2. Multi-storey houses account for more than 90% of newly-built or under construction houses in Chinese cities. Its advantages are as follows: (1) Compared with low-rise residential buildings, it saves land and has a shorter construction period than high-rise residential buildings, which can be completed within one year after completion; (2) There is no need to increase the investment in elevators, high-pressure pumps and public walkways like high-rise residential buildings; (3) The structural design is mature, and the brick-concrete structure is usually adopted. The building materials can be produced locally, and can be industrialized and standardized in large quantities. Therefore, multi-storey houses are low in cost and moderate in price, and are easily accepted by ordinary consumers.

3. High-rise residence is the product of urbanization and industrial modernization. According to its shape, it can be divided into tower hungry type, plate type and wall type. According to its internal space combination, it can be divided into unit type and corridor type. High-rise residential buildings are generally equipped with elevators as vertical means of transportation. Therefore, the state also clearly stipulates that there should be no less than 2 elevators in each building for high-rise residential buildings with 12 floors and above. The advantage of high-rise housing is that it can save land and increase housing and population. There are also some shortcomings in the construction and use of high-rise residential buildings, such as: large investment, the consumption of steel and concrete in high-rise buildings is higher than that in multi-storey buildings, in addition, elevators and high-pressure pumps are needed, public walkways and doors and windows need to be added, and the one-time investment is very large. In addition, after use, you need to pay a recurring fee for the maintenance of elevators and pumping stations.

At present, we often say "slab small high-rise" refers to a small high-rise residence composed of multiple residential units, each of which is equipped with stairs and elevators. At present, most of them are on floors 9 to 12.

"Tower" mainly refers to high-rise residential buildings with stairs and elevators as the core. In layman's terms, it is a tower centered on elevators and stairs. When you get to the floor, you can walk in all directions and enter the room directly. The banlou is composed of many units, and each unit uses its own independent stairs and elevators. But from the appearance, it is not necessarily a "I" shape, but also a corner, fence and other shapes.

Duplex residence is a new residential building form popularized in recent years. The characteristic of this kind of residence is that the interior space draws lessons from the design techniques of two-story single-family houses in Europe and America. The residence covers two floors, and auxiliary rooms such as bedroom, living room, living room, bathroom and kitchen can be arranged in layers. The traffic between the upper and lower floors is connected by small stairs used by users alone, without going through public stairs.

The advantage of duplex residence is that each household has two or two integrated lighting surfaces. Even if the orientation is not good, it can be made up by increasing the lighting area. Better ventilation, larger indoor living area and auxiliary area, compact layout, clear functions and less mutual interference.

What's the difference between a multi-storey house and a high-rise house?

The difference between multi-storey houses and high-rise houses generally refers to buildings with six or seven floors, and high-rise houses refer to houses with six or seven floors or more. Multi-storey houses and high-rise houses have their own characteristics, so we can't simply say which one is better. We should consider the structure, cost, area, quality, room type, property management fees and so on. In terms of building quality, generally speaking, the construction standard and quality of high-rise residential buildings are higher than that of multi-storey residential buildings. Ordinary multi-storey houses are generally brick-concrete structures, while high-rise houses are cast-in-place reinforced concrete. The foundation is deep and solid, the wall is thick and impermeable, and the seismic performance is better than that of multi-storey houses, and the whole building will not sink and deform. High-rise residential buildings have wider horizons, better air quality and less noise; Because of the high building and strong natural wind, some rooms do not need air conditioning, which can save electricity. However, from the actual use area of houses, the housing acquisition rate of high-rise houses is lower than that of multi-storey houses, that is, houses with the same construction area are purchased, and the indoor construction area of high-rise houses is lower than that of multi-storey houses. The area of the house includes the usable area and common parts of the house, such as stairwells. Because there are elevators, elevator waiting rooms, basements and so on. In high-rise residential buildings, there are more public areas to be shared, so the actual occupancy rate is low. The property management of most high-rise residential buildings is relatively perfect, the residential environment is generally beautiful and comfortable, the management of parking bicycles and cars is good, and there are special people on duty at the elevator door and gate, so the residential area is relatively safe; However, the property management fee of high-rise residential buildings is higher than that of multi-storey residential buildings. High-rise residential buildings have elevators to go up and down stairs, which is convenient to get in and out. The elderly, the disabled and the sick can avoid the pain of climbing stairs. However, if the maintenance of the elevator is not in place, once the elevator fails, it will be more difficult for residents to go up and down the stairs. But from the perspective of room structure, multi-storey residential buildings are better than high-rise residential buildings. Due to structural reasons, generally, multi-storey residential buildings face south, and are ventilated from north to south, with large indoor use area, reasonable room type and easy separation and decoration. High-rise residential buildings generally adopt frame structure, and the location of several elevators should be considered, so the apartment design is a bit difficult.

What are high-rise and multi-storey buildings?

1, the so-called high-rise is 24 floors above 16; 2, more than 24 floors are super high-rise; Households and floors below 16 are small high-rise buildings; 4. The 1-7 layer is multi-layered.

The difference between high-rise buildings and multi-storey buildings

According to the national standard of People's Republic of China (PRC) "Code for Residential Design"

GB 50096— 1999(2003 edition)

1.0.3 residential buildings are divided into the following floors:

First, the first to third floors of low-rise residential buildings;

Two, multi-storey residential four to six floors;

High-rise residential buildings with three or seven to nine floors;

Four, ten floors and above high-rise residential buildings.

According to the standard of People's Republic of China (PRC) Urban and Rural Construction and Environmental Protection Department "General Principles for Civil Building Design".

JGJ 37-87 (Trial)

Article 1.0.5 division of height and floor of civil buildings

1. Residential buildings are divided into: 1 ~ 3 floors are low floors; 4 ~ 6 layers are multi-layered; 7 ~ 9 floors are middle and high floors; The floors above 10 are high-rise buildings.

Two, public buildings and comprehensive buildings with a total height of more than 24m are high-rise buildings (excluding single-storey main buildings with a height of more than 24m).

3. When the building height is greater than 100m, both residential buildings and public buildings are super high-rise.

In addition: the concept of small high-rise was put forward by developers, and the actual specification did not define small high-rise. The 8- 1 1 floor locates small high-rise buildings, mainly considering the reasons of stairs and elevators. Because the 8- 1 1 floor residence can be without closed stairwells and fire elevators. At the same time, ordinary passenger elevators must be set up. In this way, there is no elevator in residential areas below 8 floors, and at the same time, there is no requirement that residential areas above 12 floors need to close stairwells and fire elevators.

The Code for Fire Protection Design of Buildings and the Code for Fire Protection Design of High-rise Civil Buildings stipulate that buildings with 10 floors and above are high-rise buildings.

So the small high-rise is not a real high-rise. It includes both 8-9-storey multi-storey buildings and10-1storey high-rise buildings.

The difference between multi-storey buildings and high-rise buildings

According to the current regulations, more than ten floors are high-rise buildings.

The important difference between high-rise buildings and multi-storey buildings is that high-rise structures not only bear vertical loads, but also bear horizontal loads (such as wind and earthquake). For multi-storey buildings, the problem of horizontal load is not so prominent, while for high-rise buildings, the problem of horizontal load is more prominent. .

If the brick-concrete structure is too high, it will be difficult to bear the horizontal load. At this time, the reinforced concrete frame structure is adopted, and its ability to bear horizontal load is much higher than that of brick-concrete structure. However, no matter how high the building is, the reinforced concrete frame structure can hardly bear the horizontal load. At this time, reinforced concrete walls are added to the frame structure (called shear walls, which have strong ability to bear horizontal loads), or all reinforced concrete walls are used to bear larger horizontal loads.

In the structural design of high-rise buildings, not only vertical load but also horizontal load should be considered.

How to distinguish multi-storey, small high-rise and high-rise buildings?

Not necessarily. Generally speaking, floors 1-3 are low-level, floors 4-9 are multi-level, and floors above 10 are high-level. A relatively small high-rise building is called a small high-rise building.

Multi-ribbed buildings exceeding a certain height and number of floors. Since 2005, China has stipulated that residential buildings above 10 floor and other civil buildings over 24 meters high are high-rise buildings. 1972 international conference on high-rise buildings divides high-rise buildings into four categories: the first category is 9 ~ 16 floors (up to 50m), the second category is 17 ~ 25 floors (up to 75m), and the third category is 26 ~ 40 floors (up to 100m). In 280 BC, the ancient Egyptians built the Alexandria Lighthouse, which was over 100 meters high. In 523, a 40-meter-high Song Yue Temple Tower was built in Dengfeng County, China. Modern high-rise buildings have sprung up in America. 1883, the first insurance company building with a height of 1 1 was built in Chicago, and the Empire State Building with a height of 102 was built in new york on 193 1. After the Second World War, there appeared a worldwide high-rise building boom period. Sears Tower in Chicago, USA, built from 1970 to 1974, is about 443 meters high. High-rise buildings can save urban land, shorten the development cycle of public facilities and municipal pipe network, thus reducing municipal investment and speeding up urban construction. (Attached photo: Sears Tower, Chicago)/KLOC-Residential buildings with 0/0 floors and above (including residential buildings with commercial service outlets on the first floor) or public buildings with a building height of more than 24m (excluding gymnasiums, auditoriums and theaters with single-story main buildings exceeding 24m).