Several questions about Section P3005.2 regarding required cleanouts in drainage lines are raised and answered:

Q: Is the required cleanout for a change in direction an additional cleanout, over and above what is required in Section P3005.2.2 for horizontal drains? For example, if I have a horizontal tee-wye located 25 feet downstream from an accessible slip-joint P-trap that serves as a cleanout, do I still need to add another cleanout for the change in direction?

Q: Is the intent of Section P3005.2.4 to allow one cleanout to serve a 40-foot developed length of pipe having any number of changes in direction greater than 45 degrees?

Click to get answers to these code questions and continue reading more on this excerpt from the 2009 IRC Q&A: Plumbing, Mechanical and Fuel Gas Provisions.

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