High-rise building

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 7-10 storeys or 23-30 m.

A low-rise building is one which is not tall enough to be classified as high-rise.

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 300 m.
• Megatall buildings exceeding 600 m.
• 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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• Secondary ventilation stacks in tall buildings.
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• Supertall.
• Super-slender.
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