George:
Here in NJ:
Ufer ground is installed on the majority of new construction, resi & comm. 20' of rebar; 1 piece or tied, with #4 cu connected to it by an approved clamp or exothermic welding (Cadweld) It is inspected by the building inspector when footing is inspected. (Per NJ UCC)
Now...who installs the #4 & clamp...probably the mason.
If & when it's on the opposite side of building from service location..the EC extends it to the main disco or main panel; again with Cadweld or a crimp barrel.
I get to 'see' it on service inspection.
As to the actual rebar emerging from the concrete....thats a "NO-NO" opinion from the State DCA. Opinion is basically that the rebar will rust as it is exposed; as opposed to being encased in concrete.
Ufer ground and water pipe (when it's copper)and the grounding is done.
BTW, more and more resi is going with plastic piping throughout.
Stay safe
