Ufer

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raider1 said:
Did you ask for a code reference? I have never heard of this, sounds a little suspect to me.

Chris
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The engineer was there and thats what he wants.2 clamps 4 feet apart.Says its because of 2 disimalar metals.I reminded him that its steel to brass and brass to copper.Its done and over with and the concrete is drying as i type.My thinking is if its in concrete it gets no air so nothing happens.
 
Jim W in Tampa said:
Says its because of 2 disimalar metals.
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The clamp used to connect the grounding electrode conductor to the re-bar must be listed for use with re-bar. Therefore I can't see a problem with "2 disimalar metals".

The problem becomes that this is an engineers requirment and it must still be met. I typically see engineers require a 3/0 wire used in the footing for a UFFER ground, even though the NEC only requires a #4 for a UFFER ground.

Chris
 
raider1 said:
The clamp used to connect the grounding electrode conductor to the re-bar must be listed for use with re-bar. Therefore I can't see a problem with "2 disimalar metals".

The problem becomes that this is an engineers requirment and it must still be met. I typically see engineers require a 3/0 wire used in the footing for a UFFER ground, even though the NEC only requires a #4 for a UFFER ground.

Chris
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Were you watching me waste that 3/0 ? LOL.I dont need to agree with them.We bid it with that in mind and we gave it to them.Long as bottom line is still green in the end its ok.
 
Exfoliation ,the chemical reaction to 2 disimular metals would have been an issue when UL approved them to be installed in concrete.Unless the manufacturer or the NEC requires them to be encased in silicon or liquid nail I would tell the inspector to pound sand !!!!
 
bjp_ne_elec said:
We are talking about ground rod clamps - correct?
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Clamps for the ufer /rebar.Will still have grond rods and building steel.This is the service for a strip mall.We enjoy doing this GC work so not about to start any problems.My question was more of a did i mis something all these years.
 
UFFER or UFER is a trade term for a concrete encased electrode. Take a look at 250.52(A)(3). The term UFFER comes from the engineer that did the research on concrete encased electrodes.

Chris
 
raider1 said:
UFFER or UFER is a trade term for a concrete encased electrode. Take a look at 250.52(A)(3). The term UFFER comes from the engineer that did the research on concrete encased electrodes.

Chris
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Thanks for the quick reply.
 
pipemaster said:
What a moron. What the hell is the piont of that. Liquid nails come on. Was there working clearance?
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Was plenty but not anymore.I actually could understand some black tar if anything.Perhaps 50 years from now something might happen.Lets get some engineers on this one.What if anything will happen to rebar incased in concrete after 50 years ? I dont even want to guess .
 
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