Been following this thread with some curiosity.
Rebar is normally wire-wrapped, to hold it in place
until the concrete forms around it.
Somewhere in here, someone discussed GROUNDING the
rebar...and the term "Ufer ground" popped up. I have
never heard the term, in 45 years, so don't know what's intended.
HOWEVER, the idea of running ground through the concrete
foundation of a tower is probably a bad one.
Every broadcast tower I've worked with has gone to great
lengths to provide lightning dissipation grounds which route
strike currents around and away from the foundations.
A million amperes flowing through the rebar will cause the
concrete to explode. Then your tower comes down. Might be
amusing for a few seconds, but the cleanup will hurt.
If the idea is to provide a positively bonded wire cage, so
there's no incidental rectification from adjacent materials
within the foundation....I don't think I'd worry about it,
unless my antenna was known to be in a high RF field where
rectification by subteranian metals might contribute noise
to reception on another antenna or band.
n2ea
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