I've got a hotel in my jurisdiction that has placed a suspended ceiling in the lobby, and each hallway of the 3 story structure. I had a fire chief recently tell me that those type ceilings were not permitted in hotels. I also noted that the contractors had punched holes in the existing drywall above the grid to accommodate wiring and they did not cover the holes back up. I have found also that they did not extend the sprinkler heads down to below the level of the drop ceiling as well as have yet to relocate the smoke detectors to the grid ceiling. ( they are still in the void space). Also what type of wiring is permitted? I have read that romex NM is not allowed and it has to be MC type. Any and all help would be appreciated.