I'm working on a project that is using cold-formed steel joist framing to build a mezzanine in a existing warehouse. They are using 3/4" plywood as the subfloor. They are actually forming the studs on site as they go.
Is this considered a combustible concealed space?
Would this require COIN (combustible interstitial) sprinklers per NFPA 13 Section 220.127.116.11?
The framed joists are 2-inches deep, and from deck to ceiling is 60 inches.
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