P-Trap configuration - 45 deg angle from trap arm to wall waste outlet

[panampefa]

Hi ... Can this 45 deg. addition be added (or is it proper) for the waste drain of a bathroom sink. The sink is a vessel sink and I'm trying to keep the p-trap as high as possible for more usable space below the sink inside the vanity.

 

[Breplum]

It is ok to offset. Factor how much more difficult it will be to snake out in the future by possibly putting a easy to disconnect joint at the tee. Better: a cleanout on the drain in the wall. I've not seen myself at supply house but they make slip joint offsets. Those typically are not code but who cares?

 

[Sponsor]

 

[wwhitney]

I think Breplum took your drawing to be horizontal, but I am taking it to be vertical.

In which case no, you may not put a vertical offset in the trap arm. The vent takeoff, which is within the wall, must be within one pipe diameter of elevation of the trap outlet.

Cheers, Wayne

 

[Breplum]

good catch Wayne

 

[panampefa]

OK ... yes I was speaking of the vertical offset..
So this is not kosher? (image)
Is it a code thing or a vacuum or sewer gas thing?

 

[panampefa]

here is a better drawing....

 

[wwhitney]

OK ... yes I was speaking of the vertical offset..
So this is not kosher? (image)
Is it a code thing or a vacuum or sewer gas thing?

Both, it can lead to the trap siphoning.

Cheers, Wayne

 

[Reach4]

Hi ... Can this 45 deg. addition be added (or is it proper) for the waste drain of a bathroom sink. The sink is a vessel sink and I'm trying to keep the p-trap as high as possible for more usable space below the sink inside the vanity.

Put the P-trap low, but have it hug the wall. Then use handicapped drain slip joint tubing to run the drainage over by the wall and drop into the trap. See https://terrylove.com/forums/index.php?threads/ikea-plumbing.53028/ #4 and #7. Will your vessel sink have an overflow?