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With regard to windows along an exterior wall of a fitness room - I'm trying to determine the dominant portion, but there is no ceiling in that space, it's open to the underside of the structure above. I don't know if the glazing comprises more that 50% of the floor to ceiling height because there is no ceiling! How do I determine if the dominant portion is the glazing or the wall?
Thanks!
Melissa,
This scenario is not specifically addressed by the Standard, but it's reasonable that in the absence of a finished ceiling, the underside of the floor above effectively functions as a ceiling.
Simply measure as if the floor above is the ceiling.