[TowerTalk] Rohn 25g unguyed height

Clay Autery KY5G at montac.com
Tue Oct 24 08:34:24 EDT 2017


Wow!  I'm with you on that one...  I was simply showing that Rohn 
requires 2 brackets to use the data on their table...  And there's a 0.6 
derate if not all the elements are round!

Sounds like someone did not know how to properly source, use, torque 
fasteners....  Personally, I would use a torque wrench and safety wires 
on every section fastener is I were going to use butt joinery in a metal 
tower like Rohn.  It's more expensive, but so is my house, my family, 
and me.

73,
Clay


On 10/24/2017 6:59 AM, N1BUG wrote:
> I am far from an expert but every bracketed Rohn 25G tower I have 
> climbed (several) wobbled in the joints above the top bracket. The one 
> that I took down showed major elongation of holes in the joint that 
> was above the top bracket.
>
> I once installed a guyed 25G tower with guys near the top of the next 
> to last section. It only had a large VHF vertical on top but was in a 
> very windy location. After two years the bolt holes at the one joint 
> above the guys were worn so much I had to replace the top two sections.
>
> I know Rohn gave the OK to bracketed installations for many years 
> (maybe still does) but personally I will never again put even one 
> section joint above the uppermost bracket or guys.
>
> Paul


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