General principles for design of civil buildings (GB50352-2005) Article 3 Classification of civil buildings.
According to the design life, 100 is classified as Class I, 50 years as Class II, 25 years as Class III, and temporary buildings less than 5 years as Class IV.
Classes 1 and 2 are based on the building area, height and = index.
Look at the civil building classification and civil building engineering design grade classification table.
(-). General public buildings: 1. Super-class: the single building area is over 80,000 square meters; Project investment: more than 200 million yuan; Building height:/kloc-more than 0/00 meters.
Grade I: the single building area is more than 20,000 ~ 80,000 square meters; Project investment: RMB 400-200 million yuan or more; Building height: 50 ~ 100 m.
3. Grade II: the single building area is more than 0.5 ~ 20,000 square meters; Project investment: 0.1~ 40 million yuan or more; Building height: 24 ~ 50m.
4. Grade III: Single building area of 5,000 square meters or less; Project investment: 6,543,800 yuan or less; Building height: less than 24 meters, in which brick-concrete buildings do not exceed the seismic limit.
(2) Residence and dormitory: 1. Level 1: more than 20 floors, level 2: 12 ~ 20 floors, and level 3: 12 floors or less, in which brick-concrete buildings do not exceed the seismic limit.
(3) Residential area and factory living area: 1. Grade I: 654.38+over 10,000 square meters; 2. Grade II: below 654.38+ 10,000 square meters.
(4) Underground engineering: 1. Super grade: the underground space (total construction area) is over 50,000 square meters; 2. Underground space (total construction area) 1 10,000 square meters to 50,000 square meters, and the affiliated civil air defense (protection level) is Grade 4 or above; 3. Level III: 1 1,000 square meters and below, and the affiliated civil air defense (protection level) is level V and above.
(5). Special public buildings: 1. Supergrade: a special high-rise building in the seismic fortification area; The technology is complex, with special requirements such as sound, light, heat, vibration and sight: the technology is particularly complex; Importance: national economic, cultural, historical and foreign-related key work projects. 2. Grade I: General high-rise buildings with building height 100m or less in the seismic fortification area; The technology is complex and has special requirements for sound, light, heat, vibration and vision. Importance: provincial economic, cultural, historical and foreign-related key projects.
Note: A project that meets one of the characteristics of the project grade can be confirmed as the project grade.