The area above the mezzanine is fully enclosed. The space will be accessed from a 2'x2' opening in the ceiling I believe. You would need a ladder to get to it.
I wanted to ask you guys what the approved installation practice is for this scenario. I have a roughly 3,600^ft2 mezzanine built entirely with noncombustible materials inside a non-combustible building (steel columns, steel beams, z-purlins). The area above the mezzanine is not going to be used...
A co-worker was able to find something in the IFC (which is our fire code) chapter 5 that states that any private fire service main shall be installed per NFPA 24. With that understanding then yes a 13R underground supply is required to be hydrostatically tested.
I suppose that may be the answer in that simply because it is a private fire service main that it is under the requirements of NFPA 24, which requires the hydrostatic test. It would be nice if that were the case for it to spell that out in NFPA 13R like it does in 13 (2007 edition, section...
I know that for a 13R sprinkler system the underground supply has to be pressure tested for 2 hours, however in the 2007 edition of NFPA 13R I can't find where it states that. In section 6.4.2 it talks about testing the aboveground piping, but omits the underground supply and I can't find it any...
