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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