[TowerTalk] TowerTalk Rohn loading

[Roger]

On a short 45G i'm sure it can be done BUT it might be a pain if you have 
to present engineering and one needs to be careful no to extend such a 
tower

73  Roger (K8RI)

----------------------------------------
 From: K7LXC at aol.com
Sent: Monday, December 10, 2012 4:17 PM
To: towertalk at contesting.com, john at kk9a.com
Subject: Re: [TowerTalk] TowerTalk Rohn loading

>    Rohn assumes that you have other
wind  loading such as multiple runs of Heliax running up each tower leg.
Personally  I use a larger lower guy cable than specified when  stacking
antennas.

Umm, I'd say this is a violation of the LXC Prime  Directive to :DO 
what the manufacturer says" and the inverse which is "DON'T do  what they 
don't 
tell you."

The capacity of a tower is due to the leg strength.  With a guyed 
tower, there is a bunch of leg pre-load due to guy wire  tensioning, and 
don't 
forget the weight of the guy wires. Using larger guy wire  can increase the 

load on the legs before anything is installed on the tower  either by added 

guy tension or added guy wire weight. I wouldn't recommend  either. 

And use of a larger guy wire doesn't really do  anything to increase 
the capacity or reliability of the tower. It's already been  designed for a 

certain set of materials and parameters. 

Violation of the LXC Prime Directive is at your own  risk. 

Cheers,
Steve    K7LXC
TOWER TECH 
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