If you have insulated guy wires, no galvanic current can flow. If not:
insulate them.... 1 amp for 1 year consumes 20 lbs of anchor - so even a
few milliamps over time from a small earth potential difference can weaken
your anchor. Protecting the anchor rod from the earth with tar/pitch
compound can't hurt either.
On Wed, Oct 13, 2010 at 9:35 PM, Mark Robinson <firstname.lastname@example.org>wrote:
> I have installed the standard Rohn GAC303 guys anchors into buried concrete
> per the Rohn drawings.
> I was talking to a tower installer who says that he has seen theses buried
> guy anchors eaten away in only a few years.
> Thinking about this I imagine that if the ground was acidic it would eat
> galvanizing zinc of the steel rod very quikly and then the steel below
> not last very long. Would it be a good idea to protect against this by
> applying lime at regualr intervals around the guy anchor to increase the
> soil ph?
> I think that I am OK since I have pulled 8 foot copper ground rods that
> been in the ground here for several years and they came out shiny and
> Mark N1UK
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