The Ontario Building Code | Concrete Pipe and Fittings
7.2.5.3. Concrete pipe and Fittings
(1) Concrete pipe shall conform to CAN/CSA-A257 Series, "Standards for Concrete pipe and Manhole Sections".
(2) Joints with external elastomeric gaskets shall be made with corrosion resistant external band type flexible mechanical couplings that conform to CAN/CSA-B602, "Mechanical Couplings for Drain, Waste, and vent pipe and Sewer pipe".
(3) Concrete fittings field fabricated from lengths of pipe shall not be used.
(4) Concrete pipe shall not be used above ground inside a building.
(5) Precast reinforced circular concrete manhole sections, catch basins and fittings shall conform to CAN/CSA-A257.4, "Precast Reinforced Circular Concrete Manhole Sections, Catch Basins, and Fittings".
In Plain Language
Concrete pipe must conform to the CAN/CSA-A257 series of standards for concrete pipe and manhole sections, and joints using external elastomeric gaskets have their own specific requirements.
This is a plain-language summary of the 2012/2017 Ontario Building Code text above, for general understanding only and not a substitute for the Code. Always confirm current requirements against the 2024 edition (O.Reg. 163/24) or a qualified professional before construction.