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Re: [TowerTalk] 90 ft erection

To:, JimMiller@STL-OnLine.Net
Subject: Re: [TowerTalk] 90 ft erection
Date: Thu, 6 Sep 2007 09:02:06 EDT
List-post: <>
In a message dated 9/6/2007 5:21:27 A.M. Pacific Daylight Time, writes:

>  Wait a second.  I'm trying to understand exactly what  it is that is so 

>  I see the bending of the erection  fixture, not good at all; is that it?  I
see that 90 ft is waaayy  toooo much for this erection at least with this
fixture.  A heavier  version of the same thing would have been much safer.

>   However, whoever said there weren't any guys I believe made a mistake.   
looks to me like a variation of the standard "falling derrick" method  I
think it is called and yes, there are guys, 4 sets of them.   

No, this is not a falling derrick. It is just a  tilt-up fixture pulling it 
    Yes, there are guys attached to the tower but  they are just hanging 
there with NO ONE hanging on to them. All that's holding  the tower vertically 
whatever their hinged base is and the line attached to  the tilt-up fixture. 
>  One directly
off of each side, perpendicular to the  lifting direction, tight the entire
time from the horizontal position to  the vertical orientation.  One in the
direction being pulled, slack  during this operation, and one directly away
from the lifting mechanism,  also slack until the tower is very nearly erect.
If the cable(s) break and  it falls, it can only fall exactly where it laid
before it was  lifted.  With one excepting and that is hard to discern, I do
not see  anyone "under" the tower after they get it walked up to the point  of
release (probably not good because of the weight of the tower, although  they
DID lift it to get it started so if the cable would have broken while  they
were under it, they were lifting the "entire" weight of it anyway and  could
have just laid it back on the ground).
    Sorry, I didn't see anyone doing anything with  the guys in the video. 
That's the problem. Even having people hold the guys is  problematic. If one 
person pulls just a little more than the other two, he'll  pull it down in that 
Steve     K7LXC


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