Harold
I thought the 96 code stated that rebar was a common bonding grid for NON electrical parts that required bonding. The 02 code does not mention anything about NON electrical parts. I do not know if it changed in 99 or 02 as we never adopted the 99, & I never purchased a 99 book. I don't have any books in front of me now, and I won't be looking into this anytime soon as I am leaving for 2 weeks tomorrow early AM.
Rick