[TowerTalk] Rohn 45G Self Supporting

[Divinia Darin]

45G, not 25G.  I would not do 50' 25g.

D.

----------------------------------
Darin Divinia
wg5j at me.com

On Nov 4, 2008, at 1:00 PM, Dave Tipton wrote:

> Even at the 40 foot level, it says a Rohn 45 has to be guyed once.
> (For a load of up to 11.3 sq feet)
>
> However, here is what Rohn Says on their website:
>
> 10 Feet - 55 Sq Feet
> 20 Feet - 25 Sq Feet
> 30 Feet - 9 Sq Feet
> 35 Feet - 4.7 sq Feet
>
> This is based on the 70 MPH Winds.
>
> To find this chart, go to
> http://www.radiancorp.com/ROHNNET/rohnnet2004/html2004/index.html
> Click on On Line Catalog (Bottom Left of the Menu Bar)
> GT Series (Top Right)
> 25 G (Again, Top Right)
> Then Allowable Antenna Areas
>
> They have all their major 3 leg towers listed there with up to 90MPH  
> Winds.
>
> Dave, W5DMT
>
> On Tue, Nov 4, 2008 at 12:26 PM, Roger (K8RI) <K8RI-on-TowerTalk at tm.net 
> > wrote:
>> Divinia Darin wrote:
>>> What are the recommendations on Rohn 45 self supporting?
>>>
>>> I am looking at approx 50' with a 2 element steppir and a Ham M.
>>> Figure I am good?
>>>
>> Not according to "The book".  They used to have and may still do some
>> where that 45G can stand 30' unguyed (I can't find it now), but the
>> antenna load is small.  On the last  page of the 45G section it says
>> "Guyed towers are not  self supporting at any height".
>>
>> Yes I know it's done, but when doing so you're on your own.  As it's
>> against ROHN's own recommendations I doubt any insurance would be  
>> good
>> be it liability of replacement.
>>
>> Roger (K8RI)
>>> I can't find my old Rohn engineering guideline book. Is there one
>>> online?
>>>
>>> Thanks,
>>> D.
>>>
>>> ----------------------------------
>>> Darin Divinia
>>> wg5j at me.com
>>>
>>> _______________________________________________
>>>
>>>
>>>
>>> _______________________________________________
>>> TowerTalk mailing list
>>> TowerTalk at contesting.com
>>> http://lists.contesting.com/mailman/listinfo/towertalk
>>>
>>>
>>
>> _______________________________________________
>>
>>
>>
>> _______________________________________________
>> TowerTalk mailing list
>> TowerTalk at contesting.com
>> http://lists.contesting.com/mailman/listinfo/towertalk
>>
>
>
>
> -- 
> Dave Tipton - Founder
> The David M. Tipton Group, LLC
> http://www.dmtgweb.com
>
> Office (214) 461-4141
> Mobile (214) 690-2512