> I made a lot of simulations for various wind conditions and found out that
>my tower, unguyed, was going to safe sustain wind up to 85 mph with a surface
>area of 20 sqft. As the wind, frequently, reaches that value where I live, on
>a hilltop in Southern Vermont, I simulated the possibility of adding guy
>wires. That increased the safe sustained value to 135 mph. So, against all
>advice, I have a guyed tower that can be unguyed.
I don't have a problem with guying a self-supporting tower IF the guys have
very little tension on them (less than 40 or so pounds). Tower strength comes
from the legs - the more tension you put on the guy wires, the more compression
you put on the legs thus decreasing the capacity of the legs to support the
tower. With a small amount of tension, you're not trying to hold up the tower -
just restrain it from wind forces. With little or no tension, you could be
subject to wind slamming - a violent and potentially fatal condition.
What is a guyed tower that can be unguyed per your comments above? I'm not
sure what that means.
> I don't know where this misnomer comes from that a self-supported should be
>weaker if you added guy wires. Maybe somebody can tell me. I understand if the
>guy wires have a very steep angle the load on the tower will increase but that
>is not the case with mine.
It's not weaker - it just has potentially less capacity.
Cheers,Steve K7LXCTOWER TECH -Professional tower services for amateur and
commercial
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