Pete: Assuming adequate anchor and guy strength, such as
1/4" strand and average, undisturbed soil - you're clear
off the strength scale for 65' of 45G, guyed at 3 levels.
With the wind load you listed, you'll lose the masting and
antennas, but the world will turn on it's axis before
the 45G will come down.
de KL7HF
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From: Pete Brunet[SMTP:brunet@us.ibm.com]
Sent: Friday, March 06, 1998 8:15 AM
To: towertalk@contesting.com
Subject: [TowerTalk] windload - how much is too much?
How do you determine how much windload is acceptable for a tower, e.g. a 65'
Rohn 45 guyed at 25', 45' and 65'? Some example configurations being
considered with various windloads are
F12 C3+EF240230 -- 14.8
F12 5BA+EF240230 -- 17.4
TH11+EF240230 -- 18.9
Are any of these getting too high? We can get some very strong bursts here in
Austin when fronts come through.
Another consideration is putting the higher freq antennas at 65' and the 30/40
up around 100'. Does this change the analysis?
Thanks, Pete ws4g
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