I read this as applying to "dwellings" in the same way that IRC applies to shops and garages, as opposed to IBC-type commercial buildings which are subject to more stringent codes. As such, small outbuildings like sheds, garages and workshops detached from one or two-family homes are still considered "dwellings" for the sake of code compliance and 210.15(B)(6) would apply.
[This message has been edited by SteveFehr (edited 02-13-2007).]
