Dennis, I would use expandable freeze plugs from a auto parts store.
They have a flat washer and a nut on one side, tighten the nut and the
rubber expands. You could also drill a small hole in the tower leg right
under the freeze plug to let the tower breathe. The flat top sections
have these holes right under the plate. You could spray some cold
galvanizing compound around the hole to stop it from rusting. The freeze
plugs also make a nice stopper for the top of your mast.
Hope this helps. 73, Bill KB3AUG
Riverton, WV (only
one traffic light in the whole county!)
On Wed, 15 Oct 1997 17:20:13 -0500 Dennis Schaefer <w5rz@cswnet.com>
writes:
>Steve suggested that I ask the group about this. I am re-installing a
>50
>foot 25G tower (replacing some 20G sections). The top section will be
>"straight" instead of "pointy". I was wondering if the openings at
>the top
>should be "capped" to keep rain out.
>
>Steve said moisture accumulation shouldn't be much of a problem if I
>put
>gravel under the base. The base went in over 10 years ago, and I
>THINK I
>did that properly. He said condensation was more of a problem than
>rain.
>That makes sense, so maybe the tops should be open instead of sealed?
>
>What do you think - seal or not seal, and if so, how? (I was
>thinking
>about using rubber stoppers from the hardware store).
>
>73,
>Dennis
>
>
>
>--
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>
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