What type of cleanouts should be the same diameter as the sewer and placed at the terminal end for cleaning?

• A. Service Cleanouts
• B. Terminal Cleanouts
• C. Branch Cleanouts
• D. Lateral Cleanouts

Answer: (B)

Cleanouts give a point of access to a sewer line so you can snake and clean it effectively. When the cleanout is at the terminal end and sized to match the sewer, you create an unobstructed passage for cleaning equipment to reach the entire length of the line. That full-diameter access at the end makes it possible to clear blockages anywhere along the run without a narrowed entry point slowing or preventing the tool from passing. Terminal cleanouts are specifically intended for this purpose—at the end of the line and the same diameter as the sewer—so they provide the best, most reliable access for cleaning. Other cleanouts along branches or laterals serve different access points and don’t guarantee the same full-diameter passage at the line’s end.