Bruce,

What I was pointing out was, if they used the IBC instead of the IRC, they have to have 7 feet ceiling in the bathroom instead of 6 feet 8 inches over the fixtures.

It is to their advantage to use the IRC.

Either way, though, I would be careful about referring to that bathroom as a "bathroom", once you eliminate the tub area with the low sloping ceiling, you 'might have' a half bath, depending on other conditions.

__________________
Jerry Peck, Construction / Litigation Consultant
Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )