>Probably many of you have already seen this, but this is a HD version
with more views of the tower demolition.
>I have one question. I've always heard that when a really tall tower
comes down, it basically collapses onto itself and doesn't fall as one solid
unit extending out the height of the tower. Watching this, I see many of the
towers didn't collapse into one small area but went down as a full unit.
> There was a NJ engineering firm study done 25-30 years ago on tower
failures. It was mostly about commercial towers more than 200' high. They
all fell within 30% of their height. I think they were mostly guyed
towers. You may find that K1VR referenced it in his book on antenna zoning
issues. I assume there must be something done more recently.
This is known as the Gunnar Olsen study. A copy of it is at
http://www.championradio.com/Gunnar-Olsen.pdf
Cheers,
Steve K7LXC
TOWER TECH
and
championradio.com
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