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Exothermic Welding Connection of Concrete Encased Electrode

jar546

Chief Cook & Bottlewasher
Joined
Oct 16, 2009
Messages
8,574
Location
Palm Beach County Florida
So they seriously thought I was going to be OK with this? Yeah, don't bother telling me and hope I don't see it. As a result I gave them an option to do it again right in front of me right now or pay for me to come back the following week and a $75 reinspection fee. I like to give choices.

IMG_4832.jpg
 

Mark K

Platinum Member
Joined
May 12, 2010
Messages
1,970
I think there is a problem with concrete cover on the reinforcing.

I would guess that the concern is the resistance between the grounding wire and the reinforcing serving as part of a ufer ground. I believe the electrical code addresses these issues. This does not require special inspection.
 

steveray

Sawhorse
Joined
Nov 25, 2009
Messages
8,802
Location
West of the river CT
I think there is a problem with concrete cover on the reinforcing.

I would guess that the concern is the resistance between the grounding wire and the reinforcing serving as part of a ufer ground. I believe the electrical code addresses these issues. This does not require special inspection.
They are going to lift it when they pour....like the mesh...
 

e hilton

Bronze Member
Joined
Jul 2, 2014
Messages
1,912
Location
Virginia
due to the fact that the clamp was not tight, it heated up, since the current did not pass over all surfaces, but only at the point of contact, therefore it overheated and burned out
Not likely, since there was no current passing through the joint. It’s still under construction.
 

ICE

Moderator
Joined
Jun 23, 2011
Messages
9,802
Location
California concrete jungle
due to the fact that the clamp was not tight, it heated up, since the current did not pass over all surfaces, but only at the point of contact, therefore it overheated and burned out
There is no clamp and there should never be current. This is a failed exothermic weld and a $78 re-inspection fee is too cheap.
 

Mark K

Platinum Member
Joined
May 12, 2010
Messages
1,970
When I hear that they plan to lift the wire fabric during construction I assume that they are trying to reinforce the soil since most of the wire fabric will be on the ground. Totally unacceptable. All reinforcement needs to be chaired or in some other way tied in place prior to placing the concrete.

Exothermic welding results in less resistance than you could get with a clamp.
 
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