> Hi, I am fairly new to towers and I have tried to research information
> on rohn's 25, 45 and 55 towers. I have found quite a bit of information
> on these towers but not the exact answers that I am looking. One of my
> questions is what is the maximum safe height on these three towers
> without guying?
I am only quoting figures. I am not making any recommdations.
According to the ROHN catalog I have in front of me.
Self supporting 2.3 safety factor
70 MPH, 34.1' *Recommended*
So ROHN recommends no more than 34.1' unguyed 25G and that is with a very
Guyed the tower can go to 200 feet maximum.
45G Self Supporting
70 MPH 45.4' *Recommended*
45G Guyed to 300 feet maximum.
>How much weight can they handle guyed or unguyed? The
I did not find the ultimate loads listed in my old catalog nor does it list
> reason I ask is that I do a lot of tower climbing and often run into a
> rohn 25 that is not guyed. Most are only 40' but some as high as 80'
No way would I climb one higher than the recommended height or with an
antenna larger than recommended for that height.
> and without guy wires these towers do a lot of swaying. I would feel
> more comfortable on these particular towers if I knew for sure that an
> extra 200lbs harnessed to the side of this tower is not going to be the
> stick that broke that camels back. Thank you for any information that
> you have.
I make no recommendations, but were it me (and it's not) as I said above,
I'd not climb one taller than the recommended height. Nor would I climb a
guyed tower that was at it's maximum rated height. The thought of climbing
200 feet of 25 G scares me.
Roger Halstead (K8RI and ARRL 40 year Life Member)
N833R - World's oldest Debonair CD-2
> Steve email@example.com
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