[TowerTalk] Calculations for a 43 Foot Vertical base...
Richard (Rick) Karlquist
richard at karlquist.com
Thu Jun 17 21:10:52 PDT 2010
It depends on your soil. I would say in my soil (clay), during
the rainy season this kind of arrangement would blow over during
the first storm. My soil doesn't have much stiffness when wet.
As always, YMMV.
Rick N6RK
Dave Tipton, W5DMT wrote:
>
>
> So tonight, while attempting to pound a 54 inch piece of Galvanized pipe
> into the ground, I hit something that felt like rock.. Upon digging down
> with a post hole digger, I discovered someone had buried at least a small
> pile of bricks (Literally the same bricks that they built my house with 50
> years ago) about 20 inches down.
>
>
>
> Instead of excavating my entire yard, I decided to just stop at 20 inches,
> and dig out at the bottom about 6 inches around the bottom of the hole.
> (Think a hole that is an inverted mushroom) I think proceeded to lop off
> part of the 1 ½ Inch galvanized pipe, burying 20 inches of it, and leaving
> 22 inches exposed, which is 3 inches higher than the directions call for,
> but I’m adding a DX Engineering UNUN at the bottom of the thing, mounted to
> that same pipe. Once end will connect to the radial plate, and the other to
> the 43 foot vertical. (Which is a telescoping Fiberglass whip with a wire
> in it, if anybody cares.)
>
>
>
> To my point, and question… Does anyone see this becoming an issue? I know
> it’s only about 120lbs of concrete in the whole, but the soil is left
> unmoved below ground where the “Feet” are, and I still have a pretty
> substantial amount of 2 inch (Outer Diameter) pipe below the ground.
>
>
>
> It’s not like I can undo it at this point, short of digging it up and
> tossing it, but I did think I should run it by the experts. Final note..
> The vertical is rated to about 40MPH and if I think we’re getting more than
> that, I really need to go lay it down anyway.
>
>
>
> Thanks,
> Dave
>
>
>
> -----------------------------------------------------------------
>
> Dave Tipton, W5DMT -- <http://www.w5dmt.com/> http://www.w5dmt.com
>
> (940) 239-7368 or (214) 690-2512
>
> Has it really been 25 years of Ham Radio fun?
>
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>
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