How many residential sprinkler heads are required to calculate when working on a 5 story apartment that is designed per NFPA 13 2016.? 11.3.1.1 states that the for adjacent sprinklers that produce the greatest hydraulic demand, but 11.3.1.2 states 8 sprinkler heads. If there is a combustible concealed space between each floor that is protecting with COIN interstitial sprinklers are 4 residential sprinkler required or 8?
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