Do I Need a Cleanout as the First Fitting in a Stack?
When installing basement sinks and connecting them to a 4″ stack, it’s essential to follow plumbing codes to ensure everything is up to standard. One common question is whether a cleanout must be the first fitting in the stack. Here’s what you need to know to pass your plumbing inspection in Virginia, based on the IPC (International Plumbing Code).
Question: Do I need a cleanout as the first fitting in my stack?
Answer: Yes, a cleanout should ideally be the first fitting in the stack. The purpose of the cleanout is to allow easy access for clearing blockages in the drain system. If the cleanout is placed too high, as in your case at 30″ above the slab, it may not be compliant with IPC standards. Typically, the cleanout needs to be installed at or near the lowest point of the system, ideally at the base of the stack before any other fittings.
Additional Considerations:
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Code Compliance: The IPC generally requires cleanouts to be installed at specific points to ensure they’re easily accessible. Installing it 30” above the slab may limit access and could potentially lead to issues during inspection.
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Potential Solutions: If relocating the cleanout below the washing machine standpipe tee, ensure it’s positioned at the lowest point of the system, allowing for proper maintenance and compliance with the IPC. Always double-check your local Virginia regulations to ensure full compliance.
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Consulting a Professional: If you’re unsure about the correct placement, consider consulting with a licensed plumber who can assess the system and ensure everything meets inspection standards.
For more tips on plumbing system setup and inspections, visit Plumbing 101.
I’m Chris Mayer, writing for Plumbing 101.
