Need help again

[Jimongee]

Ok framing complete yesterday. Starting to run my plumbing. Wouldn't you know, the first hole in a 2x6 bottom plate for a vanity drain ended up directly on top of a double weight bearing I joist! So ther is no option to move the vanity. Here is my question; is it totally ok to have the plumbing drain enter the vanity through the vanity floor.... As closes to the back wall and then 45 out the top of the santee back into the wall above the top plate so I can run my vent stack up to the roof? Thank you for your help
Jim in Nashville,TN

 

[frodo]

go for it...........

 

[Jimongee]

Thanks for your quick response. I assume from your sketch you are showing the vent pipe 45'd out of the vanity floor and traveling up the inner wall. So would you mind adding the sink P' trap just so I am 100% sure? Also just to make you laugh...after I sent the 1st post I discovered the other 3 bath and powder rooms have the same double joist under the needed wall too! By any chance coming through the vanity floor with the drain is ok with the UPC? Thanks again Macgyver

 

[phishfood]

If you are using a standard cabinet as a vanity, you can usually offset the drain pipe back into the wall using (2) 1/8 bends (drainage 45's) underneath the body of the cabinet. I have done that many times when faced with your situation.

 

[Jimongee]

Hey phish food I appreciate your help. I must be getting slow. Is there any chance you could sketch what you described. I think you meant the vent can 45 up the inside the wall but I don't quite understand how the basin P trap exits to the drain under the vanity. Sorry for my cloudy mind. Thanks for you help. Jim

 

[Matt30]

Jumanji was a great movie

 

[Jimongee]

So I see your mention of the movie. How funny is that? My real name is Jim Mongene ...but for years everyone has called me Jimongee....so yeah they got the idea from that it old Robin Williams flick....

 

[phishfood]

No, drill the hole for the drain just outside of the wall, and then move the drain back into the wall with two 45's. Continue on with the drain, poke the drain out of the wall with a sanitary tee, and carry the vent up from the top of the sanitary tee, as would be done with any other lavatory drain. The open space under the cabinet hides the two 45's.

 

[Jimongee]

Phish foo...you are the greatest. I totally understand. What a great solution that does not clutter up my cabinet. Thank you so much.
Jim