Concrete foundation electrodes

Using Foundation re-bar below ground level can provide low resistance system in solving difficult earthing problem. Some called it Ufer electrodes in honor to Mr. Hubert Ufer who conducted thorough researched and testing of concrete foundation electrodes.

Methods using CADWELD or Thermo welding and Mechanical splicing to the re-bars are accepted. However using steel wire in splicing is highly prohibited since it can loosened the splicing of copper wire to the re-bar when the concrete pouring will commence.
Further reading.

http://www.psihq.com/iread/ufergrnd.htm
http://www.psihq.com/iread/ufergrnd.htm