Triple Traps

[kblair1 (Kenneth Blair, CMI)]

Is this incorrect. There are three traps that Y into the drain line.

[jpope (Jeffrey Pope, CMI)]

Not allowed by the UPC. . .

[hmcclard (Harry E. McClard, NH 0024)]

Tough question. Traps in series are prohibited, these are parallel. IRC 3107.1 says ok for 2 traps on one trap arm; UPC says 1 per trap arm; question is whether the Y is part of the trap arm? Tricky.

[hmcclard (Harry E. McClard, NH 0024)]

Thanks Jeff; I had gone for coffee refill before hitting “post”. AND, think of all the extra storage they gain by cleaning that mess up!

[kblair1 (Kenneth Blair, CMI)]

Thanks guys

[jpope (Jeffrey Pope, CMI)]

@hmcclard

question is whether the Y is part of the trap arm? Tricky.

Yes, it is.

All piping from the trap-weir to the vent is part of the trap-arm.

[belliott (Bob Elliott, 450.0002662)]

I personally do not see a real world issue with the above.

[Brian_A.MacNeish]

@belliott

I personally do not see a real world issue with the above.

The drain and vent should be what… 2-3 inches behind the “Y”; probably not much of an issue except on paper.