November 12, 2013

1 World Trade Center named as tallest US building

Without a 408-foot ‘needle’ on top, the building would have been only 1,368 feet tall – well short of Chicago’s 1,451-foot Willis Tower.

By Don Babwin
The Associated Press

CHICAGO — The new World Trade Center tower in New York knocked Chicago’s Willis Tower off its pedestal as the nation’s tallest building when an international panel of architects announced Tuesday that the needle atop the skyscraper can be counted when measuring the structure’s height.

click image to enlarge

One World Trade Center is seen from the 56th floor of its neighbor, 4 World Trade Center, recently in New York. The 1,776-foot One World Trade Center is the marquee skyscraper at ground zero; but the first office tower to open there will be its shorter neighbor 4 World Trade Center on Wednesday.

The Associated Press

click image to enlarge

In this image taken from video, colored lights illuminate One World Trade Center as the building conducts its first beacon test last Friday in New York.

The Associated Press / WNBC-TV

The Height Committee of the Council on Tall Buildings and Urban Habitat said the needle is not an antenna but a spire, and thus is a permanent part of the building.

The needle, measuring 408 feet tall, was more than enough to confirm Chicago is the Second City when it comes to tall buildings.

With the needle, 1 World Trade Center is a symbolically important 1,776 feet tall. Without it, the building would have been only 1,368 feet tall — well short of the 1,451-foot Willis Tower.

At stake was more than just bragging rights in two cities that feast on superlatives and the tourist dollars that might follow: 1 World Trade Center stands as a monument to those killed in the 9/11 attacks, and its architects had sought to capture the echo of America’s founding year in the structure’s height.

The building’s 1,368 feet height without the needle also holds symbolism; it is the height of the original World Trade Center.

The 30 Height Committee members are industry professionals from all over the world and is widely recognized as the final arbiter of official building heights around the world. They conferred behind closed doors last week in Chicago, where the world’s first skyscraper appeared in 1884.

The new World Trade Center tower remains under construction and is expected to open next year.

The designers originally had intended to enclose the mast’s communications gear in decorative cladding made of fiberglass and steel. But the developer removed that exterior shell from the design, saying it would be impossible to properly maintain or repair. Without it, the question was whether the mast was now primarily just a broadcast antenna.

Under the council’s current criteria, spires that are an integral part of a building’s aesthetic design count. Broadcast antennas that can be added and removed do not.

Daniel Safarik, an architect and spokesman for the nonprofit council, said it might consider amending its height criteria. Such a move would have much broader implications that could force a reshuffle in the rankings of the tallest buildings in the world.

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