What is the required diameter for cleanouts on a drainage pipe that is 10 inches or more?

The required diameter for cleanouts on a drainage pipe that is 10 inches or more is 4 inches. This specification is based on plumbing codes that aim to ensure proper access for maintenance and cleaning of drainage systems. A cleanout provides a point of access for rodding or flushing out blockages, and its size is crucial for fitting appropriate tools and ensuring effective clearance of debris.

For pipes that are larger, such as those 10 inches in diameter or more, a 4-inch cleanout allows for sufficient access while still aligning with industry standards. Larger cleanouts serve a vital role in accommodating the volume of waste and solids that might need to be removed from the system, ensuring that repairs or maintenance can be performed efficiently. By adhering to this requirement, plumbing professionals can maintain optimal function and safety of drainage systems.