When do cleanouts need to be installed in horizontally run drains?

Cleanouts are essential components in plumbing systems as they provide access points for cleaning and maintainability of the drainage system. The correct practice regarding the installation of cleanouts in horizontally run drains is to place them at each change of direction or at intervals of 100 feet.

This requirement ensures that plumbers can access and clear any potential blockages that might occur within the drainage system. When installed at changes of direction, cleanouts facilitate easier access to sections of the drain that are more prone to clogs due to the angles. If a drain runs horizontally for a significant distance, installing cleanouts every 100 feet ensures that there are adequate access points for maintenance, which is critical for preventing backflow and maintaining the efficiency of the system.

By adhering to this guideline, the integrity of the plumbing system is preserved, and the likelihood of serious issues, such as extensive clogs or system failures, is greatly reduced.