Div. B › Part 7 › 7.4 › 7.4.6 — Arrangement of Drainage Piping

7.4.6.1 — Separate Systems

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(1) No vertical soil or waste pipe shall conduct both sanitary sewage and storm sewage.

(2) There shall be no unused open ends in a drainage system and dead ends shall be so graded that water will not collect in them.

OBC Definitions

Defined terms on this page

dead end

means a pipe that terminates with a closed fitting.

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.

sanitary sewage

means , (a)liquid or water borne waste, (i)of industrial or commercial origin, or (ii)of domestic origin, including human body waste, toilet or other bathroom waste, and shower, tub, culinary, sink and laundry waste, or (b)liquid or water borne waste discharged from a public pool to a drain.

sewage

means sanitary sewage or storm sewage.

soil

means , except for the purposes of Part 8 of Division B, a portion of the earth’s crust that is fragmentary or such that individual particles of a dried sample may be readily separated by agitation in water, and includes boulders, cobbles, gravel, sand, silt, clay and organic matter.

storm sewage

means water that is discharged from a surface as a result of rainfall, snow melt or snowfall.

waste pipe

means a sanitary drainage pipe that carries the discharge from a fixture directly to a waste stack, soil stack, sanitary building drain, branch or sewage system.

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