Div. B › Part 7 › 7.2 › 7.2.6 — Ferrous Pipe and Fittings

7.2.6.7 — Steel Pipe

Copied! ▲ ▼

(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.

OBC Definitions

Defined terms on this page

drainage system

means an assembly of pipes, fittings, fixtures and appurtenances on a property that is used to convey sewage and clear water waste to a main sewer or a private sewage disposal system, and includes a private sewer, but does not include subsoil drainage piping. Drinking water system has the same meaning as in subsection 2 (1) of the Safe Drinking Water Act, 2002.

industrial occupancy

means the occupancy or use of a building or part of a building for the assembling, fabricating, manufacturing, processing, repairing or storing of goods or materials.

occupancy

means the use or intended use of a building or part of a building for the shelter or support of persons, animals or property.

plumbing system

means a system of connected piping, fittings, valves, equipment, fixtures and appurtenances contained in plumbing. Point of entry treatment unit has the same meaning as in subsection 1 (1) of Ontario Regulation 170/03 (Drinking Water Systems) made under the Safe Drinking Water Act, 2002.

size

means the nominal diameter by which a pipe, fitting, trap or other similar item is commercially designated.

venting system

means an assembly of pipes and fittings that connects a drainage system with open air for circulation of air and the protection of trap seals in the drainage system.

water distribution system

means an assembly of pipes, fittings, valves and appurtenances that conveys potable water to water supply outlets, fixtures, plumbing appliances and devices from the water service pipe or from a point of entry treatment unit located in the building.

building

(a) a structure occupying an area greater than ten square metres consisting of a wall, roof and floor or any of them or a structural system serving the function thereof including all plumbing, works, fixtures and service systems appurtenant thereto,
(b) a structure occupying an area of ten square metres or less that contains plumbing, including the plumbing appurtenant thereto,
(c) plumbing not located in a structure,
(c.1) a sewage system, or
(d) structures designated in the building code; Act

plumbing

a drainage system, a venting system and a water system or parts thereof; Act

On this page