[TowerTalk] Ufer Grounding

[Patrick Greenlee]

Rebar cages for Tashjian Tower Corp (ex Tri-Ex) are welded, not tied, 
and then hot dipped galvanized.

Patrick        NJ5G


On 7/15/2016 1:14 PM, jimlux wrote:
> On 7/15/16 11:06 AM, David Gilbert wrote:
>>
>> Normal rebar is made from random composition steel melted down from old
>> car chassis, bed springs, washing machine frames, older reclaimed rebar,
>> etc.  Welds made to it have completely indeterminate strength.
>>
>> Weldable rebar has controlled content and is spec'd where the rebar
>> joints need to be structurally strong.  I think rebar cages for bridge
>> pylons and large building columns might be an example.
>>
>> I don't see any problem cadwelding copper wire to normal rebar since we
>> aren't looking for structural strength anyway.  The materials (copper
>> and iron/steel) are inherently different in the first place.
>>
>
> It's unclear why you would feel compelled  weld the wire to the rebar 
> (inside the concrete) in any case. The Ufer design doesn't require it. 
> It's more about getting the appropriate length of metal into the 
> concrete.
>
> That said, if you're doing the "piece of rebar sticking up through the 
> top" as the connection point, then some sort of welding of your copper 
> wire to the rebar at that point would be useful.
>
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