Correct me if I'm wrong, but the Rohn specs are for SUSTAINED
wind speeds, not gusts. Big difference!
Barry W2UP
On 11 Sep 01, J. Kincade wrote:
>
> If my feeble memory serves me, I'm in an 80 Mph zone. In the past year
> alone, we have had two occasions of officially recorded straight-line blasts
> of over 90 mph (recorded at the airport about 4 miles east of me). The last
> one took down a dozen or so very large trees around my place, and ripped out
> about 100 feet of split rail fence. So charts be damned, I built my recently
> erected guyed R45 to Rohn's 110 mph specs. Total added cost to get from 80
> to 110, as far as I can figure, is about $75 worth of extra concrete, some
> extra sweat in digging larger anchor holes, and an added $100 or so more to
> buy 4130N mast material vice something a little more bendable. I'd go for
> the overkill on the wind speed rating, and give up a little tower height to
> do it if necessary. You'll sleep better at night, I promise.
> 73, Jerry W5KP
>
> ----- Original Message -----
> From: Gary B <blueis@sprintmail.com>
> To: <TowerTalk@contesting.com>
> Sent: Monday, September 10, 2001 11:50 AM
> Subject: [TowerTalk] Paranoid vs. Overkill
>
>
> >
> > TowerTalkians...
> >
> > My question is simple. I live in a "70 mph" wind zone according to what I
> > can determine. Can I SAFELY use the 70 mph figure or should I build in
> > additional capacity by purchasing a stronger tower? Using a 'lower spec'
> > Trylon tower (eg, T400 vs. T600) means getting a taller tower at
> > approximately the same price. (Remember: size does matter!) What would
> > you recommend? How reliable are the 'wind speed' tables? Do I stand a
> > *reasonable* chance of long service and no tower failure using the 70 mph
> > figure? Or does this all boil down to how lucky I feel?!?
> >
> > The more I read, the less likely it is that I can make a decision!
> >
> > Tnx
> >
> > Gary B
> > k3gb
> > RVN BTO
> >
> >
> >
> > List Sponsored by AN Wireless: AN Wireless handles Rohn tower systems,
> > Trylon Titan towers, coax, hardline and more. Also check out our self
> > supporting towers up to 96 feet for under $1500!!
> http://www.anwireless.com
> >
> > -----
> > FAQ on WWW: http://www.contesting.com/FAQ/towertalk
> > Submissions: towertalk@contesting.com
> > Administrative requests: towertalk-REQUEST@contesting.com
> > Problems: owner-towertalk@contesting.com
> >
> >
>
>
>
> List Sponsored by AN Wireless: AN Wireless handles Rohn tower systems,
> Trylon Titan towers, coax, hardline and more. Also check out our self
> supporting towers up to 100 feet for under $1500!! http://www.anwireless.com
>
> -----
> FAQ on WWW: http://www.contesting.com/FAQ/towertalk
> Submissions: towertalk@contesting.com
> Administrative requests: towertalk-REQUEST@contesting.com
> Problems: owner-towertalk@contesting.com
>
--
Barry Kutner, W2UP Internet: w2up@mindspring.com
Newtown, PA Frankford Radio Club
List Sponsored by AN Wireless: AN Wireless handles Rohn tower systems,
Trylon Titan towers, coax, hardline and more. Also check out our self
supporting towers up to 100 feet for under $1500!! http://www.anwireless.com
-----
FAQ on WWW: http://www.contesting.com/FAQ/towertalk
Submissions: towertalk@contesting.com
Administrative requests: towertalk-REQUEST@contesting.com
Problems: owner-towertalk@contesting.com
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