This change will make it easier to understand what can be considered a grounding electrode when it comes to structural steel. A metal in-ground support structure(s) that is in direct contact with the earth vertically for 3.0 m (10 ft) or more, with or without concrete encasement shall be used as a grounding electrode. This can be a steel column or rebar as long as it is in contact with the earth for 10’ vertically with or without concrete encasement. As stated in 250.50 each electrode that is present shall be bonded together to form the Grounding Electrode system. So if you have this present in your building then it is required to used.
Also got this great picture from Hector from Royal Palm Beach.
Till next time be safe work safe
Jake