[TowerTalk] Assembled tower; lifting by Crane

[Tom McAlee]

Pat,

I am no expert, so please don't try this at home.  But, I'll pass along what
the sign/crane company told me last fall...

I had already assembled 70' of my 80' 25G tower with the help of a friend.
At that point, it appeared the one friend I had who might be able to get the
antennas to the top wasn't going to be there (then or in the near future).
When I called the sign company, the owner told me I should have just
assembled the entire tower on the ground and had them lift the whole thing.

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 somehow propped
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.

Tom, NI1N

----- Original Message ----- 
From: "Pat Barthelow" <aa6eg at hotmail.com>
To: <towertalk at contesting.com>
Sent: Tuesday, March 15, 2005 9:18 PM
Subject: [TowerTalk] Assembled tower; lifting by Crane


> When you pick up an assembled tower, say a Rohn 25, 45, 55 family,  say 80
> ft or so, do you need to implement a multi-attachment scheme, or can you
> lift from a single point, without damaging the tower.  Or said another
way,
> how long of a Rohn 25 tower can you lift, assembled:
> 1.  from a mid point?
>
> 2. From one the top, with the base on the ground?
>
> tnx, 73,
>
> de Pat  aa6eg at hotmail.com