Hans Netten's The High-Rise Pages

What is the 'tallest structure in the world'? (page 2)

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The question about what is the tallest building in the world is more complicated than meets the eye: one could consider how to measure these buildings. For example, do we take in account spires and antennas? As we already know, Petronas Towers claimed the title of the tallest building in the world in 1996, because spires were higher than the roof of Sears Tower. To end this controvery, the Council on Tall Buildings and Urban Habitat made a compromise. They defined 4 categories for measuring tall buildings;

- Height to the structural or architectural top.
- Height to the highest occupied floor.
- Height to the top of the roof.
- Height to the top of antenna.

Now, since they finished Taipei 101, the Petronas Towers are not leading anymore as the tallest buildings in the world in any of the categories above! As we believe Taipei 101 is now leading in the categories 1 and 3. Category 2 is unsure, and Sears Tower definitely still leading as the tallest building in the world in the fourth category! (By the way, the former World Trade Center in New York was even taller to the top of its antennas!). So this means there is not one 'tallest building in the world', but there are two of them! Question answered, case closed, no more debate needed? Forget it! Because this is the point where some folks from Canada get a bit upset.

And of course they should be. Because Toronto is home to the famous CN Tower! Not only is this a tower of remarkable beauty and grandeur, it is also very, very tall! In fact, Its top is no less than 1816 feet up in the skies! So it is by far taller than the buildings as mentioned before. So the people from CN Tower themselves claim that their tower is the 'world's tallest building'.

But then why do so many people not recognize CN Tower as the 'worlds tallest building'? Because, so they say, CN Tower is not a building. Constructors and architects argue that a building is a frame structure made of walls and floors. Now CN Tower houses some occupied floors indeed, but most of the structure is no more than a concrete shaft housing elevators, and therefore it is not a building, it is a structure. This is the reason why the Council on tall Buildings and Urban Habitat, and many other building resources do not recognize CN Tower as the tallest building in the world.

But isn't CN Tower at least the tallest man-made 'structure' in the world? For the answer continue to next page...

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