[TowerTalk] Assembled tower; lifting by Crane
w8ji at contesting.com
Wed Mar 16 05:48:14 EST 2005
> He told me they had done it with 120 feet of 25G. What he
said that had
> done was assemble the 12 sections of 25G on the ground and
> it up and mounted the rotator, mast, and antennas. Using
a 100' crane
> normally used to lift signs, they hooked on at about the
90' level and
> lifted the entire structure into place.
> I have the impression that professional riggers and
installers on this list
> will have their jaws hit the floor over that, but its what
he told me
> anyway. He said they had done it many times.
We did it a few times a month with 25G by attaching about
2/3 of the way up....a single point attachment....but that
was with perhaps a half dozen VHF/UHF monoband yagi's and
logs for TV channels.
I just did it with a 150ft 19" face tower by attaching at
100ft. I'm sure it would have handled more.
All you need to do is wrap the whole tower and weave around
a leg below and above a crossbrace so it doesn't slip. Watch
it when you start to lift for bending.
More information about the TowerTalk