South Carolina Code of Regulations
Chapter 8 - BUILDING CODES COUNCIL
Article 12 - INTERNATIONAL RESIDENTIAL CODE
Section 8-1219 - IRC R326.3 Story above grade plane
Current through Register Vol. 48, No. 9, September 27, 2024
A habitable attic shall be considered a story above grade plane.
Exceptions: A habitable attic shall not be considered to be a story above grade plane provided that the habitable attic meets all the following:
1. The aggregate area of the habitable attic is not greater than three-fourths of the floor area of the story below.
2. The occupiable space is enclosed by the roof assembly above, knee walls, if applicable, on the sides and the floor-ceiling assembly below.
3. The floor of the habitable attic does not extend beyond the exterior walls of the story below.
4. Where a habitable attic is located above a third story, the dwelling unit or townhouse unit shall be equipped with a fire sprinkler system in accordance with Section P2904.