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Last edited 28 Sep 2020
Storeys of a building
The British English word ‘storey’ (plural storeys) and the American English ‘story’ (plural stories) refer to a level element of a building that has a useable floor. The term may be used interchangeably with ‘floor’, ‘level’, or ‘deck’; however, it is usual for a building to be described as a ’ten-storey building’ while the individual storey may be referred to as the ‘tenth floor’.
Most houses are two-storeys, while bungalows are single-storey. A multi-storey building is a building that has multiple storeys, and typically contains vertical circulation in the form of ramps, stairs and lifts.
- A low-rise building is one which is not tall enough to be classified as mid-rise.
- Mid-rise buildings have five to ten storeys and are equipped with lifts.
- High-rise buildings are considered to have more than 7-10 storeys.
- Skyscrapers have 40 storeys or more.
- Super-slender buildings are pencil-thin and of 50-90+ storeys.
Storey heights tend to be based on the ceiling height of the rooms in addition to the floor thickness. They are commonly 3 to 4.5 m, but can vary significantly depending on the room type. Storey heights can also vary throughout a building.
Approved document B, Fire Safety, Volume 2, Buildings other than dwellinghouses (2019 edition), suggest that a 'storey' Includes any of the following:
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