Hi Gerald,
That is my plan! I was thinking of a double thickness of 3/4” ply that is about
2’ wide. Strap it so that it reaches up about 2’ and hangs down by a foot or
so... my main concern with posting this was ANY deformation in the leg. I know
this stuff is REALLY stout – but wasn’t sure if any bending (permanent) might
happen making it more difficult to get together. That stated the secondary
effect of scraping off the galvanizing was and is in my mind as well.
g.
From: TexasRF@aol.com
Sent: Friday, October 14, 2016 11:05 AM
To: rxdesign@ssvecnet.com ; n0ost99@gmail.com
Cc: towertalk@contesting.com
Subject: Re: [TowerTalk] Legs of a 60' piece of tower being dragged while being
lifted
Gary, you might consider lashing a 4ft X 8ft sheet of plywood to the bottom
tower section to protect the end of the tower while dragging it across the
ground. Probably should be 3/4" thick to survive. Even a 2ft X 4ft might do the
job.
Or, strap a couple of 4" X 4" X 8ft posts to the tower and let the ends of the
posts take the abuse. Kind of like what you have seen in old Western movies
showing how Indians moved stuff around on two poles strapped to their horse.
If you don't do something to protect the tower you can expect some of the
galvanizing to be scrapped off. I have seen that happen just skidding sections
around on a smooth concrete floor. With upwards of 400 pounds of weight on the
lower end it is a given.
I have not done any of these things so consider this as a concept only. As they
say, your mileage may vary!
73,
Gerald K5GW
In a message dated 10/14/2016 8:57:04 A.M. Central Daylight Time,
rxdesign@ssvecnet.com writes:
Indeed you are correct ... however space is the limitation. The 60’ piece was
assembled with the top nearest the crane and going away from that spot – that
distance it goes away is probably too far for the crane as it would need to
boom out too much... with hindsight I might have tried to do it differently to
accomplish this better but even thinking about that I don’t think it would have
been possible with 6 antennas all assembled scattered around. The space where
it would have had to go is where I had to stage the 50’ boom 5 el 20 in order
to get it pre-assembled on to a 14’ tower section – it and the 80/75 dipole are
at the top and I had to use that space to get it ready (its now done and ready
to go).
g.
From: Jeff Draughn
Sent: Friday, October 14, 2016 9:05 AM
To: StellarCAT
Cc: tower
Subject: Re: [TowerTalk] Legs of a 60' piece of tower being dragged while
being lifted
I may be all wet here, especially since I have never done this before, but it
seems if you position the base of the section you want to lift near the tower
you want to lift it onto then swing the boom of the crane to pick up the end,
as you pick it up if you swing the boom back towards the base of the section
you're lifting there would be very little dragging involved.
Again without having real life experience at doing this I may be completely
off-base but just a thought.
Jeff
On Friday, October 14, 2016, StellarCAT <rxdesign@ssvecnet.com> wrote:
So Fred pointed this out ... I hadn’t considered it up until then... is it
a problem to just allow the legs drag in the dirt while the 60’ piece with
rotating ring attached (~850#) is lifted? Is there ANY chance the legs will
deform making it impossible to mate it to the tower? I don’t have access to an
end loader or any other piece of heavy eqmt ... I thought, and this might sound
silly, a dolly ... those cheap(er) ones – seem to be rated at 600# ... if I
could get enough guys to lift the end and put that under the end – then we
could pull it along as the crane goes up.... although the ground is really
rough so that is doubtful... it would probably get stuck and the legs drop off
which would be far worse than just having them drag on the ground ...
experiences anyone?
Gary
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