2024 Ontario Building Code: Approved Materials for Water Service Pipes and Fire Service Mains
Sarah's Expert Insight
OBC Compliance Specialist
"The 2024 updates to Table 7.2.11.2 emphasize the necessity of high-pressure ratings, particularly the 1,100 kPa requirement for PVC, which is vital for the municipal water pressures we see in London and Oakville. At empcontracting.ca Inc., we recommend utilizing Type K copper or high-series PEX to ensure your water service lines exceed provincial durability standards and withstand the seasonal ground shifts common in Southern Ontario."
When planning infrastructure or residential builds, adhering to the 2024 Building Code Compendium is essential for safety and longevity. As empcontracting.ca Inc. your construction contractor in London, Ontario, we ensure every installation meets the rigorous standards of Section 7.2.11.2.
Understanding Table 7.2.11.2: Material Standards
Table 7.2.11.2 outlines the mandatory standards for piping and fittings used in water services and fire mains. These regulations ensure that the materials can withstand specific pressures and environmental factors common in Ontario construction.
Plastic Piping and PEX Systems
Modern construction often utilizes flexible and durable plastics. According to the OBC, Polyethylene (PE) pipe must conform to Series 160 or higher of CSA B137.1. Crosslinked polyethylene (PEX) systems must meet CSA B137.5. For PVC applications, the code mandates a rated working pressure of 1,100 kPa or more to ensure system integrity under stress.
Metallic Piping and Cast-Iron Standards
For heavy-duty fire service mains, cast-iron and ductile-iron pipes (ANSI/AWWA C151) are frequently used. These must feature a cement-mortar lining to prevent corrosion. Additionally, Type K soft copper remains a preferred material for water service, provided it is certified to ASTM B88 and uses ASME-compliant solder-joint or flared-joint fittings.
Composite Piping Solutions
The code also permits composite systems like PE-AL-PE and PEX-AL-PEX (conforming to CSA B137.9 and B137.10). these systems combine the benefits of metal and plastic, offering excellent pressure resistance for complex London-area residential and commercial projects.
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.