i’m reading up on this topic and wonder if anyone has a good link or explanation or specific citation to read up more. also, in what context do i need to know this? it is defined in IBC but is sometimes used in the building code (to define them i guess?), sometimes used in FHA (to determine how many?) and sometimes used in federal or state laws (for other legal reasons somehow?). anyone know anything about this designation or how to get up to speed on it?
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