Pete Smith wrote:
> Hi Kurt -- a useful message - thanks. I'd never seen your explanation of
> why use a pier pin with Rohn towers before. Before putting up my 100 of
> Rohn 25, I polled the multitude about fixed base vs pier pin, and decided
> to do the latter. However, Rohn's implementation involves a 16 inch
> square flat plate bearing on the top of the base concrete, and it looks to
> be that the friction between the two, particularly when heavily loaded by
> wind, would partially or completely negate the benefits. What do you think?
>
Hi Pete,Yeah, I wondered about that one too! I would have thought it pretty
important to lubricate the mating faces to allow free movement. It may be that
all the wiggling and shaking that occurs helps.
Hey, there are lots of towers that have survived in either condition. But there
are those that did not. Lots more variables, like how hard is it really gonna
blow?
73, Kurt
> 73, Pete Smith N4ZR
> n4zr@contesting.com
>
> "That's WEST Virginia. Thanks and 73"
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