Are sprinklers required in the upper portion of an architectural ceiling feature, even when there are no openings to above and the sprinklers at the lower portion do not exceed area of coverage limitations?
This question usually arises with architectural features such as skylights and rooms with multi-level ceilings. The general concern with these types of features is the potential for heat to ‘pocket’ and the negative impact to the operation of the sprinklers. This could be true even if sprinklers are spaced within their limitations for allowable area of protection. NFPA 13 does not specifically address the sprinkler requirements for these architectural features. However, the applicable sections of Chapter 4 do address the distance below the ceiling that sprinklers must be positioned. The need for sprinklers in the upper portion can be determined based on the distance from the upper level to the position at which the sprinklers would be installed on the lower level. If this distance exceeds the allowable distances specified in Chapter 4, then sprinklers would be required at the upper level. Obstructions specified by Chapter 4 to any of the sprinklers would also need to be examined and ac
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