Civil buildings * * * The buildings with eaves height ≥36m, building area ≥7000m2 and span ≥30m belong to Class I projects, and public buildings with building area of 7606m2 belong to Class I projects. I. Classification of buildings 1. Buildings can usually be divided into: (1) productive buildings: industrial buildings, agricultural buildings: all kinds of buildings serving production, which can also be called factory buildings, such as production workshops, auxiliary workshops, power rooms, storage buildings, etc. Factory buildings can be divided into two categories: single-storey factory buildings and multi-storey factory buildings. Agricultural buildings: buildings used for agricultural production and processing, such as greenhouses, livestock and poultry farms, grain and feed processing stations, agricultural machinery repair stations, etc. (2) Non-productive buildings: civil buildings 2. Classification of civil buildings (1) is classified according to the use function of civil buildings: residential buildings and public buildings: mainly refer to buildings that provide family and collective life, such as houses, apartments, villas and dormitories. Public buildings: mainly refer to buildings that provide people with various places for social activities, including administrative buildings: public buildings of institutions, enterprises and institutions. Cultural and educational buildings: schools, libraries, cultural palaces, etc. Nursing buildings: nurseries, kindergartens and so on. Scientific research building: research institute, scientific experiment building, etc. Medical buildings: hospitals, outpatient departments, sanatoriums, etc. Commercial buildings: shops, shopping malls, shopping centers, etc. Visit buildings: cinemas, theaters, shopping centers, etc. Sports buildings: gymnasium, gymnasium, gymnasium, swimming pool, etc. Hotel buildings: hotels, guesthouses, guest houses, etc. Traffic buildings: airport, waterway passenger station, railway station, bus station, subway station and so on. Communication and broadcasting building: telecommunications building, radio and television station, post office, etc. Garden architecture: parks, zoos, botanical gardens, pavilions, etc. Memorial buildings: memorial halls, monuments, cemeteries, etc. Other buildings: such as prisons, police stations, fire stations, etc. (2) According to the scale of civil buildings, it is divided into large buildings and large buildings. Large number of buildings: refers to the small scale of buildings, but large number of buildings; Closely related to people's lives; Widely distributed buildings. Such as houses, primary and secondary schools, hospitals, small and medium-sized theaters, small and medium-sized factories, etc. Large-scale building: refers to a building with large scale and high cost. Such as large stadiums, large theaters, airports, railway stations, museums, large factories and so on. (3) According to the number of civil buildings, it is divided into low-rise buildings, multi-storey buildings, medium-high-rise buildings, high-rise buildings and super-high-rise buildings. Low-rise building: refers to the building with 1 ~ 3 floors. Multi-storey building: refers to a building with 4-6 floors. Middle and high-rise buildings: refer to buildings with 7-9 floors. High-rise building: refers to the residence with a floor above 10. Public buildings and comprehensive buildings with a total height of more than 24 meters are high-rise buildings. Super high-rise building: When the building height exceeds 100 m, both residential and public buildings are super high-rise.