14X-4-402.1 Minimum ceiling height.
Habitable spaces, hallways, corridors, bathrooms, and toilet rooms must have a minimum clear ceiling height of 7 feet (2134 mm).
Exceptions:
1. Within dwelling units and sleeping units, a minimum clear ceiling height of 6 feet 8 inches (2033 mm) from the floor is allowed.
2. In any room beams, girders, pipes, ducts, furred spaces, or similar obstructions covering not more than 25 percent of the ceiling area may have a clear height of not less than 6 feet (1829 mm).