How frequently are cleanouts required in 8-inch diameter drain lines?

In plumbing systems, cleanouts are essential access points that allow for the cleaning and maintenance of drainage lines. For an 8-inch diameter drain line, the requirement for cleanouts is set to ensure that clogs and obstructions can be efficiently addressed without creating disruption to the entire system.

According to plumbing codes, specifically the Uniform Plumbing Code (UPC) and International Plumbing Code (IPC), cleanouts must be provided at certain intervals based on the diameter of the pipe. For larger drain lines like an 8-inch diameter pipe, the interval between cleanouts is extended compared to smaller pipes. The requirement is set at every 100 feet for such larger diameter lines. This is based on the understanding that larger pipes can handle more substantial flow and are less prone to frequent blockages compared to smaller pipes.

Therefore, the choice indicating cleanouts every 100 feet aligns with established plumbing standards for maintaining accessibility and ensuring that maintenance can be performed effectively on larger drainage systems.