How frequently must cleanouts installed in pipes with diameters of 3 inches or less be installed?

Cleanouts in plumbing systems are crucial for maintaining the integrity of drainage and waste systems, as they provide access for cleaning and inspection. When considering pipes with diameters of 3 inches or less, the frequency of cleanout installation is typically determined by plumbing code requirements.

For pipes of this size, cleanouts must generally be installed a maximum of 100 feet apart. This distance ensures that any clogs or blockages in the system can be efficiently addressed without requiring extensive excavation or disruption of the plumbing. Regular access points for maintenance also help in keeping the plumbing system functioning properly and reduce the likelihood of severe backups.

Thus, cleanouts should be spaced appropriately to balance accessibility and plumbing code adherence, making the requirement of installing them every 100 feet both practical and in line with regulatory standards. This ensures that serviceability and maintenance practices can be effectively conducted on plumbing systems consisting of smaller diameter pipes.