[TowerTalk] exploding concrete

[Jim Lux]

Dave Bowker wrote:
> An interesting article in MRT for April 1, 2007 > 
> http://mrtmag.com/techspeak/radio_wellgrounded_principles/index.html < dealing with grounding of 
> structures and downleads and the Ufer ground includes a photo  (Fig-4) showing lightning damage to a 
> concrete tower pier due to lightning surges through the foundation.  It cautions against use of a 
> Ufer ground consisting solely of the tower foundation.
> 
> 73, Dave, K1FK
> Fort Kent, ME


That's the same article that was linked before off the Mike Holt site. 
Not enough information in the article to tell if the damage shown is 
really lightning damage, or something else.