Type

CTBUH collects data on two major types of tall structures: "Buildings" and "Telecommunications / Observation Towers." A "Building" is a structure where at least 50% of the height is occupied by usable floor area. A "Telecommunications / Observation Tower" is a structure where less than 50% of the structure's height is occupied by usable floor area. Only "Buildings" are eligible for the CTBUH "Tallest Buildings" lists.


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