Committee reviews interpretation: when a curved/stressed-skin assembly counts as wall or ceiling for insulation
A jurisdiction asked how to classify insulation requirements for stressed-skin or earth-covered curved assemblies; the committee said IBC defines an exterior wall as having a slope of 60 degrees or greater from horizontal and recommended staff circulate the draft interpretation and prepare to discuss at the full council if needed.
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A jurisdiction asked the BFRW committee for guidance on how the energy code treats nonstandard curved assemblies (for example, stress-skin panels or bermed structures) — specifically, which portions are ‘‘vertical wall’’ and which are ‘‘ceiling’’ for insulation requirements.
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