GC poured slab w/o calling me to bond......options

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brantmacga

brantmacga

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I have a project that consists of three buildings...... I was out doing site work recently and they had set the footer steel in only two of the three buildings.

for whatever reason, they decided to just not call me when the steel was set in the third; I stopped by today to check on it and found the slabs have all been poured. GC says he didn't understand what I was talking about.......


anyway, they have 12" threaded-L's that were wet-set in the slab for tying the wall. Will it do any good whatsoever to bond to one of those? or 20?
 
That is exactly why our footing/structural inspection looks for the connection to the re-bar before he lets them pour.

If the "L" bolts are tie wired to the footing rebar, and there is at least 20' or 1/2" or larger re-bar, you can connect your GEC to the bolts. However often those bolts are not tied to the re-bar.
 
don_resqcapt19 said:
If the "L" bolts are tie wired to the footing rebar, and there is at least 20' or 1/2" or larger re-bar, you can connect your GEC to the bolts. However often those bolts are not tied to the re-bar.
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Since the L bolts were "wet-set", I don't see how they could be connected to the rebar.

Cheers, Wayne
 
wwhitney said:
Since the L bolts were "wet-set", I don't see how they could be connected to the rebar.

Cheers, Wayne
Click to expand...
I skipped right over those words. You are correct, they do not provide a connection to the re-bar. Around here, since they all know they can't pour without an inspection, the GC would have to correct this at his expense.
 
Yeh not tied to the rebar ..... The GC basically said because they inspectors here don't require it on residential that they weren't worried about it. I'll be honest I was pissed about it. These slabs are sitting on what is basically loose sand and I wanted that steel bond. When I called for my site inspection, the inspector did say he only makes them do it on commercial. My response to the GC was simply that we don't cut corners because it isn't enforced .... Anyway, I can't imagine they'll do anything to fix this; I was just curious what else i might could do.


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brantmacga said:
Yeh not tied to the rebar ..... The GC basically said because they inspectors here don't require it on residential that they weren't worried about it. I'll be honest I was pissed about it. These slabs are sitting on what is basically loose sand and I wanted that steel bond. When I called for my site inspection, the inspector did say he only makes them do it on commercial. My response to the GC was simply that we don't cut corners because it isn't enforced .... Anyway, I can't imagine they'll do anything to fix this; I was just curious what else i might could do.


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Click to expand...

Is this bonding for an equipotential grid? I know it can't be for a ufer, since ufers have to be in footings, not slabs.
 
brantmacga said:
Yeh not tied to the rebar ..... The GC basically said because they inspectors here don't require it on residential that they weren't worried about it. I'll be honest I was pissed about it. These slabs are sitting on what is basically loose sand and I wanted that steel bond. When I called for my site inspection, the inspector did say he only makes them do it on commercial. My response to the GC was simply that we don't cut corners because it isn't enforced .... Anyway, I can't imagine they'll do anything to fix this; I was just curious what else i might could do.
Click to expand...

a couple ground rods, and tie them to building steel when there is some building steel to tie to?

another solution would be to dig 20' of ditch next to the building, throw 20' of bare copper in
the ditch, and irrevocably attach (read cadweld) it to the building steel.... then slurry the copper in.
something with the same cross section of the steel you need to duplicate.

finally, a use for that 20' tail of 4/0 that was laying in the back of the shop.
 
Cow said:
Is this bonding for an equipotential grid? I know it can't be for a ufer, since ufers have to be in footings, not slabs.
Click to expand...

Two of the slabs are monolithic with steel in the footing.

The other was poured footing with block.


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No building steel either ..... Wood framed. Looks like we'll just have to do rods and move on.


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