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NFPA 13R qustion for 4-story building with basement

Question asked by ktrusty5 on Nov 13, 2018
Latest reply on Nov 14, 2018 by ktrusty5

I have a question regarding whether or not I can use NFPA 13R for an existing building being retrofitted into apartments. The reason I am not sure about using NFPA 13R is that, while the building is only 4 stories and less than 60' in height above grade, there is a basement which is entirely below grade, but it also has four apartment units, along with a fitness room, the occupant storage room, and the mechanical and electrical rooms.   I have not found a definitive answer as to whether the 4-story requirement is just for the stories above grade, or total stories of residential occupancy.  Any input would be appreciated!