June 2011
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Things that make you go hmmm, part III

Continuing the series, this is a picture of an ice bridge installation I recently saw:

Ground wires on an ice bridge

Ground wires on an ice bridge

On an otherwise neat installation, it appears there is something wrong with the way these ground wires are connected to the support poles of an ice bridge.  I am not sure how effective that connection will be if lightning hits anything nearby.  Generally speaking, those wires are CAD welded (exothermic welding) to the support poles or whatever else is supposed to be grounded.  I’d bet that whoever packed the truck for the job simply forgot to throw the CAD weld shots on the truck.

Now they have to come back.

It will be interesting to see how long it takes whatever tower company to return to the site and finish the job.


A pessimist sees the glass as half empty. An optimist sees the glass as half full. The engineer sees the glass as twice the size it needs to be.

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