OBC Plumbing Standards: Fittings, Flow Rates, and Compliance with empcontracting.ca Inc. in London, Ontario
Sarah's Expert Insight
OBC Compliance Specialist
"In my experience at empcontracting.ca Inc. your construction contractor in London, Ontario, navigating Section 7.2.10.6 is critical when balancing modern water conservation with the high-performance expectations of custom builds in Oakville or Muskoka. For our clients in London's historic districts, the heritage exemption provides necessary flexibility, but for all other projects, ensuring your fixtures meet the specific LPM (litres per minute) thresholds is a non-negotiable step for passing final plumbing inspections."
Understanding the intricacies of the 2024 Ontario Building Code (OBC) is essential for any successful renovation or new build. As part of our commitment to excellence, empcontracting.ca Inc. your construction contractor in London, Ontario, ensures all plumbing installations meet the rigorous standards for mechanical couplings, saddle hubs, and water efficiency.
7.2.10.4. Mechanical Couplings and Sewer Pipe Standards
Compliance with CSA Standards
Mechanical couplings are vital components in modern plumbing systems. According to OBC 7.2.10.4, groove- and shoulder-type mechanical pipe couplings must strictly conform to CSA B242. Furthermore, any mechanical couplings used for Drain, Waste, and Vent (DWV) or sewer pipes must meet the CSA B602 standard to ensure long-term durability and prevent leaks.
7.2.10.5. Regulations for Saddle Hubs
Installation Restrictions
The OBC generally prohibits the use of saddle hubs or fittings in drainage, venting, or water systems. However, there is a specific exception: a saddle hub may be installed in a building drain or sewer with a nominal diameter of at least 8 inches, provided the connecting branch is at least two pipe sizes smaller than the main run. This ensures the structural integrity and flow capacity of the municipal and residential sewer connections.
7.2.10.6. Supply Fittings and Water Conservation
Maximum Water Flow Rates
Water efficiency is a primary focus of Section 7.2.10.6. Supply fittings must conform to ASME A112.18.1 / CSA B125.1 or CSA B125.3. Except for specific healthcare or emergency applications, shower heads and supply fittings must include integral means to limit water flow. The maximum rates include:
- Private Lavatory Fittings: 5.7 LPM
- Public Lavatory Fittings: 1.9 LPM
- Kitchen Supply Fittings: 8.3 LPM (excluding industrial/commercial)
- Shower Heads: 7.6 LPM
Heritage Building Exemptions
It is important to note that these flow rate restrictions do not apply to fixtures located within designated heritage buildings, allowing for the preservation of historical character without compromising modern code compliance in other areas.
Disclaimer: This content is generated from the Ontario Building Code for educational purposes. Always consult with a licensed professional engineer or your local building department before starting any construction project in London, Ontario.