What is the minimum clearance required in front of a 2 inch cleanout?

The minimum clearance required in front of a 2-inch cleanout is indeed 12 inches. This requirement ensures that there is adequate space for maintenance and inspection tasks, allowing the plumbing technician or contractor to easily access the cleanout for cleaning and addressing any potential clogs or issues. Sufficient clearance is critical not only for practical reasons, such as maneuverability and the use of tools, but also for compliance with plumbing codes, which are designed to promote safety and functionality in plumbing systems. A clearance of 12 inches provides a standardized space that helps ensure that cleanouts can be accessed efficiently without obstruction, supporting better long-term maintenance of the plumbing infrastructure.