[Tower-Speak] One-Man Towers

[Mac McCullough]

man I think your screwed..  this tower is not all this high capacity rated 
in the first place, if one or MORE possibly legs have experienced a failure 
of this order the mere fact of it being a guyed tower will force the strain 
toward the weaker leg..  and your picture is as clear as mine what those 
results will be..  that damaged leg is in jeopardy of buckling , rather or 
not you employee some effortto save the leg by welding is bound to cause a 
point in time where the weakness is manifested to give way.. I would attempt 
a direct repair.. I would add to the leg by a heavy piece of angle iron spot 
or skip stitched welded along the contact points, paint it over and buy some 
time, till you can properly effect some decent repairs/replacement..   good 
luck  mac/mc



Located 46 miles due North of the Alamo, and 121 miles due South of the 
Western White House.   see my website at  www.collinsandharrisradios.com
----- Original Message ----- 
From: "Robin Midgett" <robin.midgett at vanderbilt.edu>
To: "Dave Leisman" <wb8baf at voyager.net>; <tower-speak at mailman.qth.net>
Sent: Thursday, January 27, 2005 1:54 PM
Subject: Re: [Tower-Speak] One-Man Towers


> Hi Dave,
> The fact that it is split is a sign of a bug in the installation. There 
> should be a bed of gravel in the bottom of the hole to allow the leg tubes 
> to drain. If there is, then something else is clogging the passage.
> As for repairing the torn section, the split can be beaten back together 
> with careful application of a ball pein hammer, then welded, preferable 
> with a small portable MIG (wire feed) welding rig or if the skills are 
> available, a gas welding rig. After that, clean the new joint with a wire 
> brush (in a drill chuck), and coat with cold galvanizing spray, available 
> at Home Depot or Lowes, made by Rustoleum.
> This procedure will restore the mechanical integrity of the leg and slow 
> the rusting process, but there's probably still something causing the 
> water to build up in the leg, which may lead to another failure.
>
>
> At 11:46 AM 1/27/2005, you wrote:
>
>>I have a question for the group.
>>
>>I have a section of Rohn 25 that has split (due to freezing water) about 6 
>>inches up from ground level.  Anyone know a way I can
>>strengthen this leg without having to take the whole thing down (nine 
>>sections, 3 antennas and a dipole)?
>>
>>The thing seems to be very stable right now and has shown no signs of 
>>being in trouble.  The tower itself is very well guyed.
>>
>>Any advice will be appreciated.
>>
>>Dave, W8QW
>>
>> > Could we start with who's selling One-Man Towers in the U.S.A. now.
>> >
>> > Rob, K7HMN
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> Thank you,
> Robin Midgett
> Electronics Technician
> V.U. School of Mechanical Engineering
> 615-322-5836 (rolls to pager)
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