Will this work?

[homnspector]

Seems to me this aint quite right. The green arrow is the basement sink / shower vent. The red is the upstairs bath tub drain. The blue is the vent stack. Does this look kosher? Will the tub drain interfere with proper venting of the lower bath?

Download Attachment: bdhshs.jpg

150.32 KB

[mgbinspect]

I'm with you Fritz. It kinda looks as if things could end up where they don't belong. Also, that's a big vent pipe for a sink and shower!

[Chad Fabry]

There will always be water in the green/ basement sink vent line. It'd work OK if the sweep tee were replaced with a tee and if there is adequate pitch on the green/ basement sink vent line.

It'd be best if the vent line for the basement sink was joined above the shower drain.

Currently, it's wrong.

[mgbinspect]

That's kinda what I was thinking too, but don't know plumbing standards to that degree.

[homnspector]

Gracias Amigos, I have recommended installing the vent connection above the upstairs drains.

[StevenT]

I wouldn't want that in my house. But it is such an easy fix. Like Chad says, simply repipe the basement sink vent to tie in above the shower drain. But having seen this, what else is there?

[hausdok]

Uh guys?

I agree that tying the basement vent in with a tee above the sanitary tee from the bathtub would be better, but didn't anyone notice the orientation of the sanitary tee to the right of the green arrow? It's upside down!

OT - OF!!!

M.

[Jim Katen]

Originally posted by hausdok

Uh guys?

I agree that tying the basement vent in with a tee above the sanitary tee from the bathtub would be better, but didn't anyone notice the orientation of the sanitary tee to the right of the green arrow? It's upside down!

OT - OF!!!

M.

That's standard orientation for a vent tee. Water isn't supposed to flow through it and if you put it in the other way, the angle would be all wrong.

The vent needs to tie in not only above the shower drain, but above the level of the shower's flood rim.

- Jim Katen, Oregon

[mgbinspect]

Yeah, I noticed the upward sloped connection which is most of the reason I said it looks as if things could end up where they don't belong along with Jim's thinking.

I think the whole configuration and pipe size choice screams of amatuer work.

[hausdok]

Hi Jim,

I guess you're right. My bad.

I suppose it might be the shadows and the coloring, but it looks to me like a sanitary tee, not a sweep tee, that's been flipped upside down. I thought there is a little flap of pipe extending into the that vertical leg in a sanitary tee that will capture water draining from above when it's installed with the "opening" downward. However, I just checked Mr. Cauldwell's "Remodel Plumbing" and he shows a sanitary tee flipped over on a vent configuration just like that and says it's OK.

ONE TEAM - ONE FIGHT!!!

Mike

[mgbinspect]

Well, Mike, you're not alone. It was a part of my initial reaction too.

It just looks like residual nastiness could end up dammed up in the vent pipe to me!

[StevenT]

I agree with tying in the vent above the flood line of the shower base, I also wonder if anything else is draining into that stack? If so, wouldn't you want to tie in the vent above the flood line of whatever else is there (sink, etc.)

[Jim Morrison]

So the answer to the original question is:

It was installed improperly, but it will work.

[mgbinspect]

Apparently so, Jim and if Darren looks down this vent pipe from the roof it may smell a little worse than he's used to... [:-sour] [:-slaphap

[kurt]

The basic rule is all fixtures (on the same drain/waste) have to be revented above the highest fixture.