[TowerTalk] Fall Zone
David Gilbert
xdavid at cis-broadband.com
Mon Jul 8 14:25:28 EDT 2019
And that potshot comment doesn't ameliorate the situation in the least.
Dave AB7E
On 7/8/2019 10:38 AM, Glenn Pritchard wrote:
> Boy is there a lot of misinformation here.
>
> Glenn, VA7UO
>
>
>
>> On Jul 8, 2019, at 10:36 AM, jimlux <jimlux at earthlink.net> wrote:
>>
>>> On 7/8/19 9:34 AM, Jim Thomson wrote:
>>> Date: Mon, 8 Jul 2019 11:20:31 -0400 (EDT)
>>> From: Wilson Lamb <infomet at embarqmail.com>
>>> To: undefined <towertalk at contesting.com>
>>> Subject: [TowerTalk] Fall Zone
>>> <I wouldn't want a neighbor's tower/Yagi looming over my backyard...and I love towers!
>>> <The fall zone idea seems like simple good manners.
>>> <I have been loosely involved in dropping 200' BC towers, dropped by cutting the rods at one guy anchor, thus losing all guys on that side.
>>> <They fell absolutely full length, with a few sections not even bent!
>>> <I think a foundation failure (soil, bolt, gin pole) would drop a crankup to full length.
>>> <Is there any experience available on this?
>>> <WL
>>> ## per software, Trylon self support towers will fail at the junction of the 4th and 5th section..... 40’ above ground.
>>> UST designs a weak spot.... which is midway up the 3rd section... 46.5 feet above ground.
>>> ## Never seen a pix of either tower folded over... as depicted above. 40 ft...and 46.5 ft. So dont know if their
>>> design theory works....or not.
>> It doesn't have to be a specially designed weak spot. Towers tend to bend/buckle in the middle anyway.
>>
>>
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