Final answer:
Clean outs are required at intervals not to exceed a certain distance in building sewer systems.
Step-by-step explanation:
In building sewer systems, clean outs are required at intervals not to exceed a certain distance. These clean outs are access points that allow for cleaning and maintenance of the sewer pipes. The specific interval requirement for clean outs can vary depending on local building codes and regulations, but a common guideline is to have clean outs every 100 feet.
For example, if you have a straight run of building sewer that is 300 feet long, you would need to install at least three clean outs along the sewer line. This ensures that there are access points available for maintenance and prevents any blockages or buildup from causing issues.
It's important to consult local building codes and regulations to determine the specific requirements for your area.