Minimum Interior Door Opening Size

[Bruce Ramsey]

IRC specifies that the main egress door must be 3' wide and 6'8" tall, hinged on one side. But I could not find any minimums regarding interior doors or doors to bathrooms.

16 year old house. Half bath is located under stairway. As a result the stairs intrude into the path of the door way. Dumb design. There is a pantry closet to the right of the bathroom that could be sacraficed to allow the bath to expand so the door could be relocated and would not be blocked by the stairs. Anyway...

Are there any IRC references to the minimun opening size to interior rooms, the size of doorways, or access to bathrooms?

[Jerry Peck - Codeman]

[Bruce Ramsey]

Thanks for the research.

I understand the code cannot anticipate every dumb thing a builder/architect can do. Technically the doorway is 6.8", its just the ceiling behind the doorway that is goofy. The exception regarding sloped cielings over toilets creates an exception to allow for the ceiling height. Within code but still goofy. Saftey hazard, skull buster, head banger, by whatever name you call it, it is just plain dumb. OF course the architect will say a creative way to squeeze the most out of space within the footprint.

[Jerry Peck - Codeman]