Distributed tower loads are complex in nature. A full analysis requires
information about the foundation soil, the foundation, the tower,
antennas, your QTH's specific TIA-G parameters, the International Building
Code, etc. My recommendation is to develop your basic idea then hire a
licensed PE to perform the structural analysis. They are uniquely
qualified to perform the analysis and make changes to your project to
bring it into compliance. Then you can pay them to apply a PE stamp to the
project, which you will surely need for permitting, zoning, and liability
purposes.
73, Scott W3TX
On 5/4/13 9:56 PM, "Gary Johnson" <gwj@spamcop.net> wrote:
>One bit of clarification... I neglected to say that I am interested in
>GUYED towers, not free-standing, so the ordinary bending moment
>calculations are not so applicable. If we assume ideal inelastic guy
>wires, and we place the antenna right at the guy station, it seems that
>the tolerance to horizontal force is nearly infinite. So that's an
>indicator that certain antenna positions could be more advantageous than
>others, and might explain how some of those really impressive stacks
>manage to stay aloft. But clearly there is much more to it, and that's
>why I ask the question about what simplifications might be acceptable for
>purposes of estimation.
>
>-Gary, WB9JPS
>
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