I have calcs for 3 US tower designs. (Actually one was for
an old Tristao/Pratt design.) The good news is that they are
moving to computerize the calcs. They use a spread sheet
for many of the calcs used in the latest set I have...
If you want a `back-of-the-envelope' calc of what a 50MPH
tower will hold at 70MPH, just cut the load area in half...
So 30ft^2 at 50MPH will be about 15ft^2 at 70...But as someone
pointed out, it will be somewhat less than 1/2 because the load
due to the tower itself will also increase.
In all 3 sets of calcs the failure mode is the leg compressive
strength, and in a section in the top half of the tower. The
laps as I recall have a pretty good margin...
Something to watch out for is that some of the sections can have
one or both:
but only over the intended lap area. So if you crank down your tower
a little bit you might actually be introducing a condition where
you are defeating the lap engineering---you have a weaker
Sorry to add complexity to the mix...BTW, it wasn't a stupid
question at all! no such thing...
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