Where should the next clean out be located when a clean out is present at the bottom of a vent and waste vertical stack?

The correct position for the next clean out after a clean out located at the bottom of a vent and waste vertical stack is within 10 feet of the building drain. This distance is important for allowing accessibility for maintenance and cleaning, as it helps to ensure that potential blockages in the drainage system can be addressed without requiring extensive excavation or disruption.

Plumbing codes and best practices dictate that clean outs should be strategically placed to facilitate easy access for plumbers to clear any clogs that may occur. In this case, having a clean out within 10 feet of the building drain conforms to typical requirements, ensuring that blockages can be managed efficiently. Being too far from the building drain could make it more difficult to reach the area where clogs often occur, resulting in potential delays and complications for plumbing repairs.

The specified distance is considered practical and efficient, promoting better maintenance of the plumbing system as it balances accessibility and functionality.