At 08:56 PM 1/1/01 -0500, WA3GIN wrote:
>
>Has anyone read or have information regarding the use of sacrificial
>Zinc anodes to reduce corrosion of earth anchors?
There is a source of technical info on the web, a supplier of anodes and
installation know-how, which has been discussed on Towertalk within the
last two years. IMO an awful lot depends on the specific soil
characteristics of your location, and potentially adding a zinc electrode
could even be harmful in the wrong circumstances (or very helpful in the
right ones). For whatever it is worth, I switched from copper plated to
galvanized guy ground rods adjacent to my guy anchors, with just this in
mind. Necessary? I don't know, but it wasn't much work.
Maybe more to the point, for many of us the guy anchor rod is a single
point of failure, which could cause the tower to fall like a tree if it
lets go. Might it not be good practice to terminate at least one set
(level) of guys on a tower on a guy anchor separate from the others? That
way if one guy anchor failed the worst that wold happen is a foldover type
failure or a tethered collapse within a relatively small circle.
73, Pete N4ZR
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