yoyo wrote in message ...
Brian Kelly wrote:
yoyo wrote in message ...

I have been given a 50 ft Rohn tower (galvanized).

Problem is, I have to get it down. and I have a couple questions.

Weight of each section?


Depends on which type Rohn tower sections are used. Hams generally use
25G or 45G and occasionally 55G.

http://www.rohnnet.com/ROHNNET/rohnn...004/index.html

http://www.antennasystems.com/towers.html#ROHN%2025G


estimate of a resonable charge to have someone do it for me?


$50/hr. for a semi-pro (part-timer) with a gin pole, the tools and the
experience to do it right safely.


I don't
like climbing


Neither does anybody else!


Is it worth paying 160 bucks to rent a 50 ft cherry picker to do it?


I wouldn't want to take a tower apart from a bucket, it would be very
awkward at best and possibly dangerous.

If I were in your position I'd get in touch with a ham in your area
who knows his way around towers and get him involved.


Thanks

Jonathan
KB8PFA


w3rv

I'm not exactly sure of the type 25 45 etc. Originally it was a 60 ft
dispatch tower for a towing service. They moved it once and it became a
50 ft. both applications the tower was bracketet to a building about 25
ft up. Is there a way to determine the tower type?

Check the detail dimensions of the center-to-center distances between
the legs given in the links.

20G = 12.5" CC with 7 horizontal elements
25G = 12.5" CC with 8 horizontal elements
45G = 15.75" CC
55G = 18" CC

I thougt it would be relatively easy to do this from a bucket.. Come
along side, unbolt it. then go above and lower it with a rope?

It's not a simple disassemble and drop process. 99% of the time the
sections have to be jacked apart often via considerable force due to
misalignment and corrosion effects. Particularly if the tower has been
used for a number of years as it has in your case.

At the instant the topmost section finally pops loose from the next
section down you'd have an unmanageable 10 foot long pile of steel by
it's bottom end wavering in the wind over you in the bucket. NO
THANKS! And it gets worse if it's an R45/55G tower with it's much
heavier sections . . etc.

The normal procedure is one man up the tower and belted in doing the
wrenches and the jacking while the section being removed is tensioned
upward via a gin pole (portable crane, Google it) controlled by his
helper on the ground. Who lowers the section to the ground after it's
off the the tower.


Jon

w3rv