The following two definitions are added to those appearing in Section 202 of the 2021 International Building Codes:
Vapor Retarder, Ground Contact: Ground contact vapor retarder class shall be defined using the requirements of ASTM E1745, Class A, B, or C - Standard specification for water vapor retarders used in contact with soil or granular fill under concrete slabs.
Primitive Camp Structure: shall include any structure permanent or temporary in nature, used for outdoor camping (transient), open on at least one side with no fully enclosed habitable spaces, less than 400 square feet under roof, and not classified as a residential occupancy due to lack of electrical, plumbing, mechanical and sprinkler systems.
S.C. Code Regs. § 8-803