What is the recommended maximum distance between cleanouts for a 4-inch diameter pipe?

The recommended maximum distance between cleanouts for a 4-inch diameter pipe is 100 feet. This standard is established to ensure proper access for maintenance and cleaning, allowing for the effective removal of blockages and debris that can accumulate in the piping system. Distances greater than what is prescribed may make it difficult to perform necessary maintenance tasks, potentially leading to more severe plumbing issues down the line.

Such cleanouts are crucial as they provide strategic access points along the plumbing system. When spaced appropriately, they help maintain the system's integrity and function, minimizing the risk of clogs and backflow situations. The distance reflects considerations of both convenience for maintenance crews and the practical realities of plumbing installations. Adhering to this guideline is an essential aspect of plumbing code compliance to ensure long-term effectiveness and reliability of the piping system.