Thanks for you respond.
We have a situation, where the tenant wanted to do renovation to his floor. (Not the first time) The floor is raised about 6" no HVAC just power and tel com wiring. The AHJ notice that the floor was not grounded, and mentions that the raised floor should be grounded. This tenant has occupied this facility for about 15 years. Is he forced to pay for the grounding of this floor base on IT requirements or NEC or is it AHJ. Their are 50 other floors in this building all having raised floors. Now, at this renovation the AHJ wants us to ground this floor.
One contractor quoted a high price for this work, other are quoting a smaller amount. The question is what requirement or standards do we use to properly design and satisfied AHJ and also have a uniform drawings so that all contractor can be on the same page when biding.