S.C. Code Regs. § § 8-1241
Current through Register Vol. 48, No. 11, November 22, 2024
In localities having a winter design temperature of 32°F (0°C) or lower as shown in Table R301.2 of this code, a water pipe shall not be installed outside of a building, in exterior walls, in attics or crawl spaces, or in any other place subjected to freezing temperatures unless adequate provision is made to protect it from freezing by insulation or heat or both. Water service pipe shall be installed not less than 12 inches (305 mm) deep and not less than 6 inches (152 mm) below the frost line.
Exception: Water pipes that are installed on the warm in winter side of the building envelope, i.e. above the insulation line in a floor system or below the insulation line in an attic do not need additional pipe insulation.
S.C. Code Regs. § 8-1241