In comparing codes, 2018 IPC, which states minimum 18", max 42", no mention of p-trap height.
UPC states 18" min, 30" max, AND the trap is 6-18" off of the finished floor.
Is there any practical consideration if you are in an IPC area (up to 42" standpipe height)?
I like the longer pipe for reducing overflow risk, but has anyone ever had siphoning problems as the length approaches 42"? This would be for 2" pipe.
My configuration is looking to be around 36" of standpipe sticking out of the p-trap, and I'm on IPC (not UPC), so while it is allowed, I am just wondering if it is a bad idea to exceed the 30" height that other (UPC) jurisdictions use.
UPC states 18" min, 30" max, AND the trap is 6-18" off of the finished floor.
Is there any practical consideration if you are in an IPC area (up to 42" standpipe height)?
I like the longer pipe for reducing overflow risk, but has anyone ever had siphoning problems as the length approaches 42"? This would be for 2" pipe.
My configuration is looking to be around 36" of standpipe sticking out of the p-trap, and I'm on IPC (not UPC), so while it is allowed, I am just wondering if it is a bad idea to exceed the 30" height that other (UPC) jurisdictions use.