7.2.6.

(1) Drainage piping, vent piping and fittings made of cast iron shall be certified to CAN/CSA-B70, “Cast Iron Soil Pipe, Fittings and Means of Joining”.

(2) Cast iron soil pipe and fittings shall not be used in a water system.

(1) Cast iron fittings designed for use with asbestos-cement pipe for drainage purposes shall conform to the applicable requirements of,

(a) CSA B127.1, “Asbestos Cement Drain, Waste and Vent Fittings”, or

(b) CSA B127.2-M, “Components for Use in Asbestos Cement Building Sewer Systems”.

(1) Threaded cast iron drainage fittings shall conform to ANSI/ASME B16.12, “Cast-Iron Threaded Drainage Fittings”.

(2) Threaded cast iron drainage fittings shall not be used in a water system.

(1) Cast iron water pipes shall conform to ANSI/AWWA C151/A21.51, “Ductile-Iron Pipe, Centrifugally Cast for Water”.

(2) Cement mortar lining for cast iron water pipes shall conform to ANSI/AWWA C104/A21.4, “Cement-Mortar Lining for Ductile-Iron Pipe and Fittings for Water”.

(3) Iron fittings for cast iron or ductile-iron water pipes shall conform to ANSI/AWWA C110/A21.10, “Ductile-Iron and Gray-Iron Fittings, 3-in. Through 48-in., (75 mm Through 1200 mm) for Water and Other Liquids”.

(4) Rubber gasket joints for cast iron and ductileiron pressure pipe for water piping shall conform to ANSI/AWWA C111/A21.11, “Rubber-Gasket Joints for Ductile-Iron Pressure Pipe and Fittings”.

(1) Screwed cast iron water fittings shall conform to ANSI/ASME B16.4, “Gray Iron Threaded Fittings”.

(2) Screwed cast iron water fittings used in a water system shall be cement-mortar lined or galvanized.

(3) Screwed cast iron water fittings shall not be used in a drainage system.

(1) Screwed malleable iron water fittings shall conform to ANSI/ASME B16.3, “Malleable Iron Threaded Fittings”.

(2) Screwed malleable iron water fittings used in a water system shall be cement-mortar lined or galvanized.

(3) Screwed malleable iron water fittings shall not be used in a drainage system.

(1) Except as provided in Sentences (2) and (3), welded and seamless steel pipe shall not be used in a plumbing system.

(2) Galvanized steel pipe may be used in a drainage system or a venting system above ground inside a building.

(3) Galvanized steel pipe and fittings shall not be used in a water distribution system except,

(a) in buildings of industrial occupancy, or

(b) for the repair of existing galvanized steel piping systems.

(4) Galvanized steel pipe and fittings shall conform to ASTM A53/A53M, “Pipe, Steel, Black and Hot Dipped, Zinc-Coated Welded and Seamless”.

(5) Where galvanized steel pipe is used in a drainage system, it shall be used with drainage fittings.

(6) All steel pipe of 4 in. size and smaller shall be schedule 40 or heavier and fittings of less than 2 in. size shall be galvanized screw fittings.

(1) Corrugated steel pipe and couplings shall be certified to CSA G401, “Corrugated Steel Pipe Products”.

(2) Corrugated steel pipe shall only be used underground outside a building in a storm drainage system.

(3) Couplings for corrugated steel pipe shall be constructed so that when installed they shall,

(a) maintain the pipe alignment,

(b) resist the separation of adjoining lengths of pipe,

(c) prevent root penetration, and

(d) prevent the infiltration of surrounding material.

(1) A sheet metal leader shall not be used except above ground outside a building.