[Elecraft] OT: Ground rods and concrete

[JOE]

Well, in my cellular experience of watching many tower and monopole 
installations, tower grounds going thru concrete was generally not 
allowed.  Several reasons that I have been told are moisture in the 
concrete can turn to steam during a direct lightning hit, damaging the 
concrete base material.  Ground conductors can be damaged by chemical 
reaction from contact with the concrete and moisture.  Lastly, you 
cannot do routine inspections on ground conductors that pass thru the 
tower base.

Tower grounding specifications are detailed in Motorola R56 Standards 
and Guidelines Manual.  This shows the ground conductors outside the 
concrete tower base.

Joe

On 4/18/2017 8:05 AM, elecraft-request at mailman.qth.net wrote:
> Message: 3
> Date: Mon, 17 Apr 2017 21:32:02 -0600
> From: "Doug Renwick"<ve5ra at sasktel.net>
> To: "'Elecraft Reflector'"<elecraft at mailman.qth.net>
> Subject: Re: [Elecraft] OT: Ground rods and concrete
> Message-ID: <191B5755E4654B65951378A9EF28A8F1 at DOUG8PC>
> Content-Type: text/plain;	charset="us-ascii"
>
> That myth refuses to die. I have 5 concrete tower bases with ground rods
> partially encased and never a worry about an exploding base.
>
> Doug