This is why I wanted to go with a guyed Rohn 25G in the first place.
Someone tried to talk me out of it since I have such a small yard.
Heck, I only want to go up 30 feet. One set of guys should do it, right?
On 12 Feb 2015 at 9:14, Grant Saviers wrote:
> 139 mph with no guys???? No way. Rohn catalog rates 30' of R25
> unguyed at 90mph 1.7 sq ft. 55g maybe a small tribander. You need a PE.
>
> Grant KZ1W
>
>
> On 2/12/2015 6:58 AM, bcarling@cfl.rr.com wrote:
> > (I'm not sure if my earler message came through, not seeing it....)
> >
> > I am putting together a permit application with my city which requires
> > certfication for 139 mph
> > for three second gusts as in TI-222 spec. Also steady 100 or 110 mph I
> > think. I will review
> > that.
> >
> > We are making a 30 foot Rohn 25G tower according to the Rohn specification
> > with 4 foot
> > cube base of concrete with no guys. I'm just qualifying the tower for the
> > permit.
> > I already have good drawings and aof course borrowed the Rohn PDF blurb
> > that says it is
> > compliant with TI-222.
> >
> > Does anyone know of a set of calculations for this fairly standard tower?
> > We would love to
> > find someone who would share their calculations or point us to someone who
> > would
> > do them reasonably?
> >
> > I know someone mentioned some possibilities earlier, via ARRL or whatever...
> >
> > Any pointers will be appreciated.
> >
> > Bry, AF4K
> > _______________________________________________
> >
> >
> >
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> > TowerTalk@contesting.com
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> >
>
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