[TowerTalk] Lightening

[Stan K2STN]

May I ask if the re-bar in those blown tower foundations was as bonded 
together and to the tower?

 From what I've read it was the pulse jumping from rod end to rod end 
that concentrated the energy producing steam which did the damage.

Stan


On 6/26/2017 4:29 PM, Gary Schafer wrote:
> It can happen. Several years ago I had my boat docked at a friends place and
> a palm tree got hit by lightning. The concrete seawall about 10 feet away
> had a large chunk blown out of it. This was a salt water canal. There was
> rebar in the seawall.
> It didn't do any damage to the boat except for the compass being off by
> about 90 degrees for about a month and it slowly returned to normal.
>
> In another life I used to write subcontracts for two way radio tower
> installations so I saw quite a few towers mounted on and in concrete. In
> that time I did see a few foundations that cracked due to lightning strikes
> on the tower. However most if not all of those towers did not have auxiliary
> ground rods at the base of the tower.
>
> 73
> Gary  K4FMX