On 1 Jun 01, at 6:01, firstname.lastname@example.org wrote:
> There has been a lot of speculation that the downward
> forces on the base plate would prevent rotation about
> a pier pin. I know of one example where I'm sure there
> was enough torque to rotate about a pier pin.
> N4AR has a pair of 200 ft R45 towers with the bottom
> sections in concrete. One of these towers has a 4 high
> stack of CC 4L20's. After a tornado passed by his QTH
> he was cleaning up around the base of the tower when a
> finger went down into a hole. The tower rotated enough
> to SHEAR OFF all 3 legs!
> de Tom N4KG
Makes me wonder if his guys were properly tensioned.
Barry Kutner, W2UP Internet: email@example.com
Newtown, PA FRC alternate: firstname.lastname@example.org
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