We have an NFPA 13R (2019), 4-story apartment. It's Group R-2, Class V-A construction, with open interior breezeways hallways in "garden style". Combined, all floor levels are ~60,000 sqft (~15,000 sqft per floor).
The design includes one 320 sqft storage room and about four 55 sqft storage closets in the interior breezeway per floor that tenants can rent if they choose.
All storage rooms and closets have gypsum ceilings.
From what I can tell, NFPA 13R-2019 doesn't really address storage like this, so I'd assume to revert back to NFPA 13 in order to protect? Is that a correct approach?
Due to the combustible construction - would that trigger coverage above and below ceilings in these spaces?
And then - am I permitted to tie into an NFPA 13R system, or would this even need a separate riser?
We could have two scenarios - one with rooms 2-hour fire resistance rated from the R-2, and another where it's incidental and not separated.
Thanks in advance for your input.
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