I really need some input on the design of my first tower.
As I have previously mentioned on this Reflector, I want to put up a 100 ft
guyed tower on my 5 acre lot that will support 20 sq ft of antenna,
rotator, etc. To get a building permit, the tower has to be designed to
meet the requirements of TIA/EIA-222 for a maximum wind gust of 130MPH.
I have now located a PE who is licensed in my home state and has
substantial experience in the design of ham towers. I have also located a
professional installer who will supervise and participate in the entire
installation (in other words, I will not be doing any of the work).
Here is the dilemma the designer has presented to me. (The following are
not real examples, but are just used to illustrate the point.) I could use
Rohn 25 with 18 total guys or I could use Rohn 65 with 9 guys. In the
first case, the tower sections would cost less than in the second case, but
there would be more labor in installing 19 guys (and the guys would cost
more) than 9 guys. Also, the amount of concrete in the base and the guy
anchors would be different.
There must be a way to determine the most cost-effective selection of type
of tower and number of guys.
Can someone help me?
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