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, [email protected] wrote:
Message: 3
Date: Mon, 17 Apr 2017 21:32:02 -0600
From: "Doug Renwick"<[email protected]>
To: "'Elecraft Reflector'"<[email protected]>
Subject: Re: [Elecraft] OT: Ground rods and concrete
Message-ID: <191B5755E4654B65951378A9EF28A8F1@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
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