One World Trade Center Officially U.S.’s Tallest Building

The One World Trade Center in New York will be the 3rd tallest building in the world upon completion. Look at what else this buildings.com article has to say about the new construction. 

Chicago’s Willis Tower can no longer lay claim to being the tallest building in the U.S.

Shannon, Flickr.com 

The Council on Tall Buildings and Urban Habitat convened its Height Committee to rule on the official height of One World Trade Center (1WTC) in New York. The committee reached a consensus that the New York building’s height to its architectural top is 1,776 feet.

The two issues regarding the true height of the building were:

The nature of the mast structure on top of the tower.
The datum line (bottom point) from which the height to architectural top was determined.

Due to design changes that resulted in the removal of the architectural cladding around the mast at the top of the structure, it became unclear whether the structure was in fact a “spire” – a vertical element that completes the architectural expression of the building and is intended as permanent, or whether it was an antenna – a piece of functional-technical equipment that was subject to change.

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