[TowerTalk] Guying a self-supporting tower - NO

[Jim Lux]

----- Original Message -----
From: "Steve Maki" <steve at oakcom.com>
> > I think the take home message is that when it comes to structural
analysis,
> > simple analyses of a modification might miss some key factor, especially
if
> > you don't understand what went the design of the original structure.  A
> > casual inspection (unless you happen to be in the tower designing
business)
> > might not reveal where the "load limiting" joints or members are.
>
> OK. In the case of the thread subject, I still don't see the worry. The
> change in stress distribution is mainly one of relief. What component of
> the tower can see an increase in stress? The very top (just below the
> guy wires) will have some vertical compression that it never had before,
> but everything below will see a big reduction in peak stress, I believe.
>
> Perhaps if someone could illustrate the issue with an exaggerated design
> of some sort.....

I think the issue is buckling failure vs bending failure.