A column and a beam is not "exposed structural steel that is interconnected to form a steel building frame" and therefore the code does not require bonding.
CMP 5 made the following panel statement in comment 5-111 in the 95ROC.
The requirement would not apply to a single steel beam with post supports in a single family dwelling since that would not constitute a steel building frame.
The words "single family dwelling" were used only in response to the submitters words in his comment. It is my opinion that isolated supports like these in any occupancy are not required to be bonded as the are not a "steel building frame".
Don
[This message has been edited by resqcapt19 (edited 02-14-2005).]