International Residential Code (IRC) Plumbing Practice Test

The correct approach to making joints in plastic piping involves utilizing approved fittings. This practice ensures that the connections adhere to industry standards set forth by the International Residential Code (IRC), which stipulates that these fittings must be compatible with the type of plastic being used, such as PVC, ABS, or CPVC.

Using approved fittings guarantees a secure and watertight seal that prevents leaks, maintains system integrity, and supports the overall functionality of the plumbing system. These fittings might include solvent welds, threaded connections, or other types that are specifically designed for the type of plastic material, ensuring compliance with the code and safety in plumbing installations. Additionally, utilizing appropriately designed fittings helps in easy assembly and disassembly, essential for maintenance or future modifications.

While methods such as welding, mechanical connections, or containment may be relevant in specific contexts or applications, the overarching requirement for plastic piping mandates the use of approved fittings to ensure that all joints are safe and reliable within residential plumbing systems.