A high-rise building is defined variously as a building in which:
- The number of storeys means occupants need to use a lift to reach their destination,
- The height is beyond the reach of available fire-fighting equipment.
- The height can have a serious impact on evacuation.
Typically this is considered to include buildings of more than 7 to 10 storeys or 23m to 30m.
Other definitions of buildings in relation to their height include:
- Mid-rise buildings of five to ten storeys, equipped with lifts.
- Skyscraper of 40 storeys or more.
- Supertall buildings exceeding 300m.
- Megatall buildings exceeding 600m.
- Groundscrapers that extend horizontally over a large distance while only being of a low to medium height.
- Super-slender buildings which are pencil-thin and of 50-90+ storeys.
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