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Old 09-18-2008, 12:01 PM   #1
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Kitchen sink P-Trap location question.


Due to layout changes, that happened before I was asked to get involved, the stub out for the kitchen drain is 24 inches to the side and 13.5 inches lower than the center of the sink drain hole.

So my question is, should I attach the p-trap at the wall and then go over to the sink (at 1/4 inch per foot rise) and then use a tall tail piece, or should I angle up with sweeps or 45's and put the p-trap by the sink?

Also, would adding a clean out there be good as once I cement in the ABS you won't have a straight shot into the wall for snaking later.

I also want to maximize storage room, so raising the pipe up under the sink for the lateral is appealing.

Thanks for any guidance you can provide.

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Old 09-18-2008, 12:49 PM   #2
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Kitchen sink P-Trap location question.


Your trap should be immediately under the sink tailpiece. You can then run over and downhill to the wall stub.

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Old 09-18-2008, 12:58 PM   #3
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Kitchen sink P-Trap location question.


I wondered if 8 inches of fall in 2 feet would cause a rush of water that might evacuate the p-trap.

What do you think of adding a clean out wye just before the wall?
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Old 09-18-2008, 02:11 PM   #4
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Kitchen sink P-Trap location question.


No, I don't think the trap will suck dry. The typical kitchen/bathroom sink trap is removable, therefore a cleanout is not required.
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