WELL SAID TIM....W7GG
sometime when i get too it i will detail my bosn chair lift system
i am using on my 180' r55 rotating twr system sorta hate to do
cuz i will get flamed by the nay sayers!! beats the hell outa
all those free climbs and nice to do all that wk while sitting down!!!
later bob, w7gg
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> From: k3lr <k3lr@telerama.lm.com>
> To: towertalk@contesting.com
> Subject: [TowerTalk] Rohn 45G loading
To: <towertalk@contesting.com>
> Date: Tuesday, May 06, 1997 11:25 AM
>
>
> >Tyler, K3MM wrote:
>
> >OK, but most of us dont try and overload 45G like you do :)
>
> Hi Tyler!
>
> My 170' Rohn 45G tower has a 5 element 20 meter beam on
> a 50 foot boom (11.2 square feet of wind load) mounted
> at 170 feet. The tower is guyed better than Rohn specifications
> for 90 MPH (inboard and outboard guy anchors) even though
> I live in a 70 MPH zone.
>
> Rohn says the tower top will handle 11.8 square feet of
> antenna load at 70 MPH. Just in case you think ALL
> contesters push tower limit loads!
>
> I am VERY careful about tower loading! In preparation for
> the installation of the 3 element 80 meter yagi this summer,
> I had the manfacture of the tower perform a load study
> on my exsisting 190 foot tower. All 6 of the tower anchors
> were replaced with new larger anchors and the guy wire size
> was increased.
>
> With its improved guying system (anchors and wires) this
> 24" faced tower will now support all of the 110 square
> feet of wind load (with a 2:1 safety factor) that will
> be on it!
>
> I am one of the few peole who were part of and lived through
> a tower disaster. I was belted on top of a 50 foot
> tower that fell over during Field Day. After 4 days in the
> hospital and 30 days to recover, I was climbing again.
>
> Few people get a 2nd chance, no one gets a 3rd.
>
> Check, re-check and check again.
> Please be safe!
>
> 73!
> Tim
> K3LR
>
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