Technical Booklet D Structure·Page 18·Table 3.1

Building Classes Table

Table 3.1 categorizes buildings into Classes 1, 2A, 2B, and 3 based on building type, height, floor area, and occupancy to determine structural design requirements.

Table 3.1 Building classes Class Building type by height, floor area and/or occupancy 1 Single family houses of not more than 4 storeys Agricultural buildings Buildings into which people rarely go, provided no part of the building is no closer to another building, or area where people go, than a distance of 1.5 times the building height 2A 5 storey single family houses Hotels, flats, maisonettes and other residential buildings not more than 4 storeys Offices of not more than 4 storeys Industrial buildings not more than 3 storeys Shops and enclosed shopping centres not more than 3 storeys, with each storey having a floor area of not more than 2000 m² Educational buildings of not more than one storey All other buildings of not more than 2 storeys, to which members of the public are admitted, with a floor area not greater than 2000 m² at each storey 2B Hotels, flats, maisonettes and other residential buildings more than 4 storeys but not more than 15 storeys Educational buildings more than 1 storey but not more than 15 storeys Shops and enclosed shopping centres more than 3 storeys but not more than 15 storeys Car parking of not more than 6 storeys Grandstands accommodating not more than 5000 spectators All other buildings to which members of the public are admitted which contain floor areas greater than 2000 m² but not greater than 5000 m² at each storey 3 Grandstands accommodating more than 5000 spectators Buildings containing hazardous substances and/or processes All buildings defined above as Class 2A and 2B that exceed the maximum limits on the number of storeys and/or floor area

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