[TowerTalk] Rohn BPC25G

Mark Robinson markrob at mindspring.com
Sun May 13 21:17:21 EDT 2007



>
>>
>>Dont ever put a ground rod in the concrete base. A lightining strike can
>>easily explode the concrete.
>>
>>Carl
>>KM1H
> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

> I've heard that for years, but I read recently (I think on the
> Polyphaser website, but I could be wrong) that that is an urban myth
> and that grounding a rebar cage is actually very desirable.  Does
> anybody know someone who's actually exploded a concrete base?
>
> Jim W8ZR
>
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

Connecting the rebar together and out of the top of the concrete as an 
addition to the ground system is called a ufer ground. This uses the 
conductivity of the damp concrete to couple to the soil. Do a google search 
on ufer ground

I believe that you want to avoid having the rebar sticking out of the 
concrete block into the soil underground as this is a direct path into the 
soil.


Mark N1UK 



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