[TowerTalk] Rohn 25G tower permitting

[Joe Subich, W4TV]

 > <snip>
 > "Rohn has a section in their catalog for unguided towers which
 > includes Rohn 25. They call for something like 2.5? x 2.5? x 4? of
 > concrete for the base. I?m not sure I really want to be up 35 feet
 > on that, but it has been in their literature for as long as I can
 > remember. "
 >
 > <snip>

First, it's *GUYED* not "guided" ...

Second, the Rohn specifications for free standing Rohn 25 call for
*very little* wind load area even in the old 60 MPH wind zones.  There
is no way a freestanding Rohn 25 will pass muster with a WARC beam
in a 140 MPH wind zone.  *Maybe" Rohn 55 or 65 will do the job but
there are no off the shelf designs for that application (at last to
my knowledge).

73,

   ... Joe, W4TV


On 2015-01-30 9:14 AM, jcjacobsen at q.com wrote:
> Jack and all,
>
>
> On the subject of 25G permitting and such, I think a closer look at Rohn docs is in order.
> Jack sent this reply:
>
> <snip>
> "Rohn has a section in their catalog for unguided towers which includes Rohn 25. They call for something like 2.5? x 2.5? x 4? of concrete for the base. I?m not sure I really want to be up 35 feet on that, but it has been in their literature for as long as I can remember. "
>
> <snip>
>
>
> The way I read the current Rohn docs for 25G SELF SUPPORTING is a base 4'x4'x4'. The smaller base is for guyed towers.
>
>
> Good luck with the project and stay safe.
>
>
> 73
> K9WN Jake
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