[Boatanchors] TOWER ERECTION

[Bry Carling AF4K]

Rohn 25 towers are rated for stand-alone, unguyed  installations by the manufacturer for 
heights of 20 feet and 30 feet IF you follow their directions.

I don't know of anyone who would try that at 100 feet. That would be crazy. 
Who is doing this?

On 1 Jul 2015 at 20:40, Rob Atkinson wrote:

> On Wed, Jul 1, 2015 at 11:59 AM, Glen Zook via Boatanchors
> <boatanchors at mailman.qth.net> wrote:
> > Burying a portion of a section in concrete has been the "norm" for decades!
> 
> What hams have done for decades doesn't make it right.  Also most hams
> insulate guyed tower bases using leg insulators instead of a taper to
> a single point insulator.   Whether you have an insulator or not the
> base should be anchored on a steel pin and plate on the concrete base
> to relieve any stress of rotational torque induced by fixing the base
> in concrete.
> 
> I'm unable to understand the logic behind burying a base in concrete
> instead of having it sit on a pin and be free to rotate.  Do people
> think it will stay up if there is a guy cable failure?   100 feet of
> Rohn 25 stays vertical if a guy cable snaps because the base is stuck
> in concrete?  I hope no one thinks that.
> 
> Rob
> K5UJ
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