In a message dated 1/9/01 4:11:28 AM Pacific Standard Time, n4kg@juno.com
writes:
> To arrive at a self supporting design you will need to perform
> a bending moment analysis. This gets extremely complex
> for a multiple size tapered element. I performed such an
> analysis for 20M elements using a spread sheet with the
> appropriate formulas for each section and checking each
> piece to be sure that the maximum bending moment at
> each section was within the ratings for that section.
> You will need good computer skills, good math skills,
> and a lot of time to program 20 or more sections!
Maybe Kurt, K7NV's Yagi Stress program might be useful for this bending
moment exercise. He has a web site but I don't have the address offhand.
Cheers, Steve K7LXC
Tower Tech
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