Can I use the small room rule out of NFPA 13 in an office with varying ceiling heights?
The room has a partial 8'-0" ceiling and a partial 8'-6" ceiling with the vertical section closed in. We're under NFPA 13-2016. The sprinklers meet the obstruction rules out of Chapter 8 and the spray pattern develops to protect the entire floor space without being obstructed by the change in ceiling elevation.
Based on the definitions below, it looks like the ceiling doesn't need to be flat, but I want to make sure I'm applying the rule correctly and I can use a 9'-0" dimension for the small room rule in this situation.
NFPA 13-2016 Section A188.8.131.52 defines a small room rule as a compartment of light hazard occupancy classification having unobstructed construction and a floor area not exceeding 800 sqft.
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