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Originally Posted by drumz0rz
Except Willis' antennae have been replaced and upgraded while 1WTC's mast is a permanent structure.
1WTC will never add anything substantial to the mast that effects the height nor will it add anything above the beacon at the top. Willis on the other hand can attach and replace antennae at will. See this article about them '1-uping' the Petronas and Twin Towers. |
Pretty cool article. I will post some part of it for you (
the article is from february 16th 2000, when the old WTC still stood and Sears Tower recently lost its long held title as the world's tallest building)
Sears Tower To Stand Tallest In Antenna Race
http://articles.chicagotribune.com/2...ldings-tallest
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It's a game of inches up there in the skyscraper heavens.
Sears Tower, which lost its world's tallest building crown in 1996 to twin towers in Malaysia by a scant 33 feet, is adding 22 feet to one of its twin broadcast antennas for digital TV.
That will do more than alter the most prominent set of rabbit ears on the Chicago skyline.
It will give Sears the arcane distinction of having the tallest broadcast antenna atop a building--1,729 feet, precisely 12 inches higher than New York's World Trade Center.
And it will heighten the competition for lucrative lease deals with local television stations.
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That's what I say too, for the CTBUH not counting antennas has more to do with the mutable nature of them than the fact that it contains communication equipment. The antennas of of Sears or other buildings used purely as antennas are much more susceptible of change than spires, as the former can change as necessities change, the spires being basically useless architectonic features are not likely to change.
The spirettena of 1WTC, although will hold communication equipment is a
fixed structure in terms of height whether you like it or not, whether it has a radome or not, whether it has communication equipment or not, it will stand on those symbolic 1776 ft. that's why I think the CTBUH, according to its rules will determine it as a spire, what they care is not if it contains communications equipment but if it is a fixed element in terms of height, and in this case it does.
http://www.ctbuh.org/TallBuildings/H...S/Default.aspx
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1. Height to Architectural Top
Height is measured from the level1 of the lowest, significant,2 open-air,3 pedestrian4 entrance to the architectural top of the building, including spires, but not including antennae, signage, flag poles or other functional-technical equipment.5 This measurement is the most widely utilized and is employed to define the Council on Tall Buildings and Urban Habitat rankings of the "World's Tallest Buildings."
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5 Functional-technical equipment: this is intended to recognize that functional-technical equipment is subject to removal/addition/change as per prevalent technologies, as is often seen in tall buildings (e.g., antennae, signage, wind turbines, etc. are periodically added, shortened, lengthened, removed and/or replaced).
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