Basement bathroom question

[daniel_12]

I am trying to make my bathroom functional. The guy I called in he used the utility sink's drain and moved to the other side of the bathroom. Is it ok to use same drain for shower, sink and washer in same time, meaning connect all to the same line? As he is planing to use.

Also do I have to vent these pipes? I assume the utility sink's drain was already vented.

Thanks a lot for the answers...

 

[Stuff]

The S-Trap in the first pic is a major problem as has no vent. Was that for the old laundry tub? Hard to tell from the pics what is connected to what.

 

[Sponsor]

 

[Terry]

The washer, sink and shower need a 2" line. From the picture, someone reduced that to 1.5" which is way too small.
Each fixture will need a vent to prevent traps from siphoning dry.
Is he pulling off the trap in the floor for all of that? I hope not.

 

[daniel_12]

The washer, sink and shower need a 2" line. From the picture, someone reduced that to 1.5" which is way too small.
Each fixture will need a vent to prevent traps from siphoning dry.
Is he pulling off the trap in the floor for all of that? I hope not.

Picture2 showet drain with trap
Picture3 former utulity sink 2 inches drain
Picture4 new sink drain which I am thinkimg to share with washer. 1.5 inches connects undet concrate to 2 inches.

In first picture the drain with trap.. He is using that. I believe pipe behind on wall is vent for both toilet and former utility sink.

I just verified the drain was 2 inches. He run two inches two shower. Also right after former drain he used a Y like adapter to seperate to 1.5 inches for vanity/sink.

I am planing to further divide this and use a washer with it. I just checked my washer upstairs it has 1.5 inches drain.

Again I am assuming the former utulity sink drain was vented. I can see the vent pipe on wall with cleanout. So the question is one vent is enough? If not since there is no walls yet should I vent and connect sink and washer to the vent pipe on opposite side of the wall as seen on pic1.?

Also like assuming former utulity sink was vented can I use two more vents after already vented drain?

Thank you..

 

[daniel_12]

Let me ask you this. The pipe behind toilet.. Is it a vent pipe? If so it is two inches at bottom. Than goes to 1.5. Can I use that pipe to vent sink and washer? I never heard anything draining from that pipe.