I have a restaurant that has an outdoor concrete patio that runs the length of the building. The patio has approximately 4 built-in gas fire pits. They want to now add a deck above the existing patio while leaving the fire pits in place. The deck would be constructed of fire resistive material and would be approx 9 1/2' above the fire pit. They are also adding an exterior sprinkler head on the adjacent wall for protection. Is there an NFPA code that would prevent this type of installation?