What is the correct usage of concrete fittings fabricated on-site?

Concrete fittings fabricated on-site are not permitted for use in plumbing systems due to various safety and structural concerns. The National Plumbing Code of Canada emphasizes the use of standardized, certified fittings that meet specific performance criteria to ensure reliability and safety in plumbing installations. Fabricating your own concrete fittings can introduce variables such as inconsistent strength, improper dimensions, and potential failure points that could lead to leaks or system failures.

Standards for plumbing materials are established to protect public health and safety. The use of appropriate fittings ensures that systems perform as intended without risking damage or hazards. While components such as concrete may be part of specific construction applications (like structures or foundations), when it comes to plumbing, adhering to code requirements is crucial for maintaining system integrity and compliance.