Construction
Drain Cleanout Spacing Calculator
Code requires cleanouts at specific intervals so plumbers can snake any clog. Lay them out right the first time.
Cleanouts required
—
- Max spacing
- —
- At every
- —
- Plus stack base + outside
- —
FAQ
Spacing for 6" or larger? +
Often increased to 150 ft for 6"+ pipes (IPC 708.3.5). Verify with your AHJ.
Two-way cleanouts? +
Required at the building exterior so plumbers can access both directions without entering the building.