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This is a list of tallest freestanding structures in the world past and present. To be freestanding a structure must not be supported by guy wires , the sea or other types of auxiliary support. It therefore does not include guyed masts , partially guyed towers and drilling platforms but does include towers , skyscrapers ( pinnacle height) and ...
The freestanding structures list uses pinnacle height and includes structures over 500 metres (1,640 ft) that do not use guy-wires or other external supports. This means truly free standing on its own or, in similar sense, non-supported structures.
Terminological and listing criteria follow Council on Tall Buildings and Urban Habitat definitions. Guyed masts are differentiated from towers – the latter not featuring any guy wires or other support structures; and buildings are differentiated from towers – the former having at least 50% of occupiable floor space although both are self-supporting structures.
The KVLY-TV mast is the tallest structure in the United States, at 2,063 ft (629 m) tall Galesville, Wisconsin WKBT-DT tower. This is a list of the tallest structures in the US that are at least 350 meters, ordered by height. Most are guyed masts used for FM- and TV-broadcasting:
This is a list of tallest freestanding steel structures in the world past and present. To be a freestanding steel structure it must not be supported by guy wires, the list therefore does not include guyed masts and the main vertical and lateral structural elements and floor systems in the case of buildings, are constructed from steel.
The Tokyo Skytree in Tokyo, Japan has been the tallest tower since 2012.. This list includes extant structures that fulfill the engineering definition of a tower: "a tall human structure, always taller than it is wide, for public or regular operational access by humans, but not for living in or office work, and which is self-supporting or free-standing, meaning no guy-wires for support."
This list of tallest buildings by height to roof ranks completed skyscrapers by height to roof which reach a height of 300 metres (984 ft) or more. Only buildings with continuously occupiable floors are included, thus non-building structures , including towers, are not included.
From the date of its completion until the Ekibastuz GRES-2 chimney was constructed in 1987, [10] it was the world's tallest smokestack. Between the years 1972–75 it was the tallest freestanding structure in Canada. Blackened rocks in 2012. Prior to the construction of the Superstack, the waste gases contributed to severe local ecological damage.