On 7/16/2013 11:45 PM, David Gilbert wrote:
Please explain why. I understand why the rebar should not penetrate the
soil/concrete interface, but I don't understand at all why a copper wire
shouldn't.
It allows moisture to migrate along the wire/concrete interface reducing
the effectiveness if it doesn't connect to the rebar. If connected to
the rebar, moisture will also migrate along it causing corrosion.
I have seen photos on the net of broken concrete , claiming the moisture
caused steam to form from the strike. I do not know if that was the
case or not. It'll take someone a bit more knowledgeable than me to
answer that which is a bit controversial.
73
Roger (K8RI)
73,
Dave AB7E
On 7/16/2013 7:53 PM, Jim Lux wrote:
What is *really really* important is that NOTHING should penetrate the
concrete/soil interface. No rebar sticking out of the side of the
concrete below grade. No copper wires sticking out to bond to ground
rods. No rods sticking out the bottom of the concrete. Only concrete
should be touching soil.
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