18-29-904.5 Location of vent terminal.

   An open vent terminal from a drainage system shall not be located directly beneath a door, openable window, overhead or other ventilating intake opening of the building or of an adjacent building, nor shall any such vent terminals be within 10 feet (3.05 m) horizontally of such an opening unless the vent terminal is at least 3 feet (914 mm) above the top of such opening.

(Amend Coun. J. 10-14-21, p. 37722, Art. IX, § 3)

18-29-904.6 Extension outside a structure.

   Vent pipes installed on the exterior of a structure shall be protected against freezing by insulation, heat or both.

(Amend Coun. J. 10-14-21, p. 37722, Art. IX, § 3)

18-29-905 Vent Connections and Grades.

18-29-905.1 Connection.

   All individual, branch vents shall connect to a vent stack, stack vent or extend to the open air.

18-29-905.2 Grade.

   All vent and branch vent pipes shall be so graded and connected as to drain back to the drainage pipe by gravity.

18-29-905.3 Vent connection to drainage system.

   Every dry vent connecting to a horizontal drain shall connect above the centerline of the horizontal drain pipe.

18-29-905.4 Vertical rise of vent.

   Every dry vent shall rise vertically to a minimum of 6 inches (150 mm) above the flood level rim of the highest trap or trapped fixture being vented.

18-29-905.5 Height above fixtures.

   A connection between a vent pipe and a vent stack or stack vent shall be made at least 6 inches (150 mm) above the flood level rim of the highest fixture served by the vent, and 42 inches (1067 mm) minimum above finished floor. Horizontal vent pipes forming branch vents, relief vents or loop vents shall be at least 6 inches (150 mm) above the flood level rim of the highest fixture served and 42 inches (1067 mm) above finished floor.