What is a tall building?
There is no absolute definition of what constitutes a tall building. It is a building that exhibits some element of tallness in one or more of the following categories: Height relative to context It is not just about height, but about the context in which it exists. Thus, whereas a 14-storey building may not be considered a tall building in a high-rise city such as Chicago or Hong Kong, in a provincial European city or a suburb this may be distinctly taller than the urban norm
Again, a tall building is not just about height but also about proportion. There are numerous buildings which are not particularly high, but are slender enough to give the appearance of a tall building against low backgrounds.
If a building contains technologies which may be attributed as being a product of tall (eg, specific vertical transport technologies, structural wind bracing as a product of height, etc), then this building can be classed as a tall building. Although the number of floors is a poor indicator of defining a tall building due to the changing floor to floor height between differing buildings and functions (eg office versus residential usage), a building of perhaps 14 or more storeys – or over 50 meters (165 feet) in height – could perhaps be used as a threshold for considering it a tall building.