Four guys over three guys are a legitimate choice. As you noted it does
save real estate. However it will put more worst case down load on the
tower, so it is a trade off. The other thing is the guys come down steeper
so you will have less turning room for any mid tower mounted antennas.
At a 150 foot for Rohn 45, this is not a tower that will suffice a simple
analysis with a hugh factor of safety and run with it. I would strongly
suggest you get some professional engineering help.
de n0yvy steve
______________________________ Reply Separator _________________________________
Subject: 3 versus 4 guys
Author: Natan Huffman <firstname.lastname@example.org> at ccmgw1
Date: 06/07/96 09:48 AM
Recently while going through the ROHN brochure, I noticed that the =
series of foldover towers made by ROHN, both 25 and 45 use a guying =
method of 4 sets of guys rather than three. This method of guying calls =
for guy anchors to be set at 30' from the base for a 72' tower which =
means that the real estate needed to put up a guyed tower is reduced =
somewhat from the traditional 3 guy approach.
I wonder if anyone has had experience with using 4 sets of guys rather =
than 3 or, better yet, does anyone know of a reference for such things.
I ask because I just purchased 150' of Rohn 45 and the installation =
would be much easier if I can justify using the 4 guy approach over the =
3 guy approach.
Natan , W6XR/2