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One World Trade Center claims highest NY building

 FILE- In this March 12, 2009, file photo, the Sears Tower, then the tallest building in America at 1,451 feet, rises above Chicago. One World Trade C...
 This April 27, 2012, photo shows the Empire State Building, center, and One World Trade Center, rear right, in New York. One World Trade Center, the ...
 This April 27, 2012, photo shows the Empire State Building, left, and One World Trade Center, right, in New York. One World Trade Center, the giant m...
 FILE - This Aug. 2, 2005 file photo shows Aon Corporation's worldwide headquarters in downtown Chicago. At 1,136 feet, it ranks as one of the tallest...

New Yorks Tallest

FILE- In this March 12, 2009, file photo, the Sears Tower, then the tallest building in America at 1,451 feet, rises above Chicago. One World Trade C...

New Yorks Tallest

This April 27, 2012, photo shows the Empire State Building, center, and One World Trade Center, rear right, in New York. One World Trade Center, the ...

New Yorks Tallest

This April 27, 2012, photo shows the Empire State Building, left, and One World Trade Center, right, in New York. One World Trade Center, the giant m...

New Yorks Tallest

FILE - This Aug. 2, 2005 file photo shows Aon Corporation's worldwide headquarters in downtown Chicago. At 1,136 feet, it ranks as one of the tallest...

One World Trade Center, the monolith being built to replace the twin towers destroyed in the Sept. 11 attacks, will lay claim to the title of New York City's tallest skyscraper on Monday.
Workers will erect steel columns that will make its unfinished skeleton a little over 1,250 feet (381 meters) high, just enough to peek over the roof of the observation deck on the Empire State Building.
Workers are still adding floors to the so-called Freedom Tower, and it isn't expected to reach its full height for at least another year. At that point, it is likely to be declared the tallest building in the U.S. and third tallest in the world.
Those bragging rights, though, will carry an asterisk.
In this case, the issue involves the 408-foot-tall (124-meter) needle that will sit on the tower's roof.
Count it, and the World Trade Center is back on top in the U.S. Otherwise, it will have to settle for No. 2, after the Willis Tower in Chicago.
"Height is complicated," said Nathaniel Hollister, a spokesman for The Council on Tall Buildings and Urban Habitats, a Chicago-based organization considered an authority on such records.
Experts and architects have long disagreed about where to stop measuring super-tall buildings outfitted with masts, spires and antennas that extend far above the roof.
Consider the Empire State Building: Measured from the sidewalk to the tip of its needle-like antenna, the granddaddy of all skyscrapers actually stands 1,454 feet (443 meters) high, well above the mark being surpassed by One World Trade Center on Monday.
Purists, though, say antennas shouldn't count. An antenna can be attached or removed. The Empire State Building didn't even get its distinctive antenna until 1952. The record books, as the argument goes, shouldn't change every time someone installs a new satellite dish.
Excluding the antenna brings the Empire State Building's total height to 1,250 feet. That was still high enough to make the skyscraper the world's tallest from 1931 until 1972.
From that height, the Empire State seems to tower over the second tallest completed building in New York, the Bank of America Tower.
Yet, in many record books, the two skyscrapers are separated by just 50 feet (15 meters).
That's because the tall, thin mast on top of the Bank of America building isn't an antenna but a decorative spire.
Unlike antennas, record-keepers like spires. It's a tradition that harkens back to a time when the tallest buildings in many European cities were cathedrals. Groups like the Council on Tall Buildings, and Emporis, a building data provider in Germany, both count spires when measuring the total height of a building, even if that spire happens to look exactly like an antenna.
This quirk in the record books has benefited buildings like Chicago's recently opened Trump International Hotel and Tower. It is routinely listed as taller than the Empire State Building, thanks to the antenna-like mast that sits on its roof, even though the average person would probably judge the New York skyscraper to be taller.
The same factors apply to measuring the height of One World Trade Center.
Designs call for the tower's roof to stand at 1,368 feet (416 meters) _ the same height as the north tower of the original World Trade Center. The building's roof will be topped with a 408-foot, cable-stayed mast, making the total height of the structure a symbolic 1,776 feet (541 meters).
So is that needle an antenna or a spire?
"Not sure," wrote Steve Coleman, a spokesman for the Port Authority of New York and New Jersey, which owns the building.
The Council on Tall Buildings is leaning toward giving One World Trade the benefit of the doubt.
"This is something we have discussed with the architect," Hollister said. "As we understand it, the needle is an architectural spire which happens to enclose an antenna. We would thus count it as part of the architectural height."
As for the world's tallest building, the undisputed champion is the Burj Khalifa, in Dubai, which opened in 2010 and reaches 2,717 feet (828 meters).


Updated : 2020-12-03 13:01 GMT+08:00