Figure their must be about a billion crawl space violations in Georgia.305.4 Freezing
Diagram
Water, soil and waste pipes shall not be installed outside of a building, in attics or crawl spaces, concealed in outside walls, or in any other place subjected to freezing temperatures unless adequate provision is made to protect such pipes from freezing by insulation or heat or both. Exterior water supply system piping shall be installed not less than 6 inches (152 mm) below the frost line and not less than 12 inches (305 mm) below grade.
"unless adequate provision is made to protect such pipes from freezing by insulation or heat or both."