Originally Posted By: Robert Koch
This post was automatically imported from our archived forum.
As stated above, min floor area for habitable room is 70 sq ft. Minimum aggregate glazed area must be not less than 8% of the floor area. Minimum openable area to the exterior is 4% of the floor area. There are exceptions for artificial light and mechanical ventilation.
Of course, this is different (not different really, just additional requirements) for sleeping rooms. Emergency escape and rescue opening required for all sleeping rooms. Net openable area 5.7 sq ft for non-grade level windows (there are additional requirements to meet emergency escape opening).
Sections R303, R304, and R310 of the 2003 IRC.
I hope this relates to what you are asking!