To stop the arguments in this thread I decided to do a research on masts. Technically even if the radome is removed and the spire is made skinny it would still be a mast. From what I read as long as a mast on a structure is held up by stays or guy wires it is a mast and therefore would be part of the structure. Therefore One World Trade Center is 1,776 feet high when complete.
To prove it.
http://www.thefreedictionary.com/mast
http://en.wikipedia.org/wiki/Radio_masts_and_towers
Quote:
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The terms "mast" and "tower" are often used interchangeably. However, in structural engineering terms, a tower is a self-supporting or cantilevered structure, while a mast is held up by stays or guys. Broadcast engineers in the UK use the same terminology. In US broadcast engineering, a tower is an antenna structure attached to the ground, whereas a mast is a vertical antenna support mounted on some other structure (which itself may be a tower, a building, or a vehicle). Masts (to use the civil engineering terminology) tend to be cheaper to build but require an extended area surrounding them to accommodate the guy wires. Towers are more commonly used in cities where land is in short supply.
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Look at Otie's picture. Credits to Otie of course. The mast is held up by guy wires. As long as it is held up by those wires it counts as part of the building. Correct me Otie if I am wrong since I just read this up online. I only study buildings so I am not an expert on masts.
