OBC 2024 Plumbing Standards: Expert Guide to Final Tests and Potable Water Systems
Sarah's Expert Insight
OBC Compliance Specialist
"Rigorous adherence to the 2024 OBC testing protocols is non-negotiable for project approval in London, Oakville, and Muskoka. At empcontracting.ca Inc. your construction contractor in London, Ontario, we ensure every drainage and potable water system exceeds these pressure requirements to guarantee long-term reliability and safety for our clients."
When executing a construction project in Ontario, adhering to the 2024 Building Code Compendium is essential for safety and compliance. As the leading experts at empcontracting.ca Inc. your construction contractor in London, Ontario, we ensure every plumbing installation meets the rigorous testing standards outlined in Part 7 of the code.
7.3.6.6. Final Tests and 7.3.6.7. Ball Tests for Drainage Systems
Before a plumbing system is deemed complete, it must undergo specific final tests to ensure gas-tight integrity and unobstructed flow.
Final Smoke and Air Testing
According to Section 7.3.6.6, a final test involves filling every trap with water and sealing the system. A smoke test must maintain a pressure of 25 mm water column for 15 minutes. Alternatively, an air test can be performed under the same pressure and duration if smoke is omitted, provided all roof terminals are closed.
Ball Testing Procedures
To verify that pipes are clear of debris, a hard, dense ball is rolled through the system. For pipes NPS 3 or larger, a 50 mm ball is used; for smaller pipes, a 25 mm ball is required. This ensures that no construction debris or structural defects impede the drainage flow.
7.3.7. Testing of Potable Water Systems
Potable water systems require stringent pressure testing before they can be placed into operation to prevent leaks and contamination.
7.3.7.2. Pressure Testing Requirements
Every potable water system must be capable of withstanding high-pressure environments without leakage. The OBC specifies two main methods:
- Water Pressure: Must withstand 1,000 kPa for at least 1 hour.
- Air Pressure: Must withstand 700 kPa for at least 2 hours without any drop in pressure.
Testing Prefabricated Systems
For modular or prefabricated builds often seen in modern London developments, if a system is assembled off-site and cannot be inspected later, it must undergo off-site pressure testing. empcontracting.ca Inc. your construction contractor in London, Ontario, manages these inspections to ensure full compliance before the modules arrive on-site.
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.