R2Arch@91
Registered User
Hi, new here, and have a question: how does one determine if a floor/ceiling assembly meets or exceeds a 1 hour rated assembly? I have reviewed the IEBC for 'archaic' assemblies, but none match the existing condition(s) I have in an old school house. We are converting the classrooms to affordable housing units; and the basement will be strictly for mechanical systems. Local AHJ regards basement as an S-1 Occupancy, so we require a 1 hr separation (with sprinklers) between basement and residential use above. One area has 2 layers (of what I am assuming is Portland Cement Plaster) the other a single layer. TIA