Looks like it failed like the World Trade Center...once it started
collapsing vertically, it crushed sections below,etc.etc....
John wb5oau
At 10:25 PM 12/4/01 -0800, Dick Flanagan wrote:
>
>At 11:50 PM -0500 12/4/01, Fred Hopengarten <k1vr@juno.com> wrote:
>> On Sun, 02 Dec 2001 02:15:48 -0600 K9AJ <mcgirr@interaccess.com> writes:
>>>
>>>
>>> > http://www.ky3.com/newsdetailed.asp?id=1706
>>
>> K1VR: The photos at this URL stand for the proposition that the tower
>> did not fall the length of its height.
>
>Fred, I think what this proposes is that the common failure mode for a
>tall broadcast tower is a vertical downward crushing failure from
>excessive weight and other vertical stresses. With all guy supports
>intact, it crumples about its base.
>
>For (relatively) short guyed amateur towers under 100 feet the most
>common failure mode is that of a broken guy support from excessive
>horizontal forces. While the failure of a top guy of a multi-level
>guyed tower might constrain the debris radius by allowing top sections
>to fold around lower guy supports, this would still not be the classic
>downward crumple observed in the TV tower.
>
>I dare say if the TV tower had suffered the total loss of one of its
>upwind guy supports, it, too, would have fallen like a giant tree.
>
>73, Dick
>--
>Dick Flanagan W6OLD CFII Minden, Nevada
>Visit http://www.cvrc.net/
>
>List Sponsored by AN Wireless: AN Wireless handles Rohn tower systems,
>Trylon Titan towers, coax, hardline and more. Also check out our self
>supporting towers up to 100 feet for under $1500!! http://www.anwireless.com
>
>-----
>FAQ on WWW: http://www.contesting.com/FAQ/towertalk
>Submissions: towertalk@contesting.com
>Administrative requests: towertalk-REQUEST@contesting.com
>Problems: owner-towertalk@contesting.com
>
>
List Sponsored by AN Wireless: AN Wireless handles Rohn tower systems,
Trylon Titan towers, coax, hardline and more. Also check out our self
supporting towers up to 100 feet for under $1500!! http://www.anwireless.com
-----
FAQ on WWW: http://www.contesting.com/FAQ/towertalk
Submissions: towertalk@contesting.com
Administrative requests: towertalk-REQUEST@contesting.com
Problems: owner-towertalk@contesting.com
|