UtahSpike
New Member
I'm planning on finishing my basement and when building my house (1999) I had two full baths roughed in. Since then, I have decided to increase the size of one of the baths and add a small kitchen. So here are my questions:
1. At the location of the original sink in one of the bathrooms (the one I wish to make larger) - I would like to change to a stackable washer/dryer. As the drain and vent are both 2" - would this be a problem?
2. I would like to add two sinks in the expanded bath on one side of a wall and a kitchen sink/garbage disposal/dishwasher on the other side of the wall. I plan on using the proper size drain and vent (2" in this case.) Can I send this combo (4 d.f.u.) drain into the 2" vent for the nearby toilet? It would make that dry vent stack 'wet' for about 2 vertical feet then increase to a 3" drain at the toilet.
I can find nothing in the code (2006 IRC) that would prevent me from doing this. I've checked and double checked the code for sizing, distances, everything seems to be code.
However...I have read in this forum and on other web sites a couple of things that concern me.
1. You cannot combine bath and kitchen DWV.
2. The maximum traps on any one vent stack is 6 (including a max of 2 toilets.) These roughed in two full baths eventually combine into a 3" vent stack that is exclusive for the basement baths.
If need be - I can cut and trench the basement slab and independantly drain the kitchen items - but I'd like to avoid that if at all possible.
Thanks in advance for any advise you can give me!
1. At the location of the original sink in one of the bathrooms (the one I wish to make larger) - I would like to change to a stackable washer/dryer. As the drain and vent are both 2" - would this be a problem?
2. I would like to add two sinks in the expanded bath on one side of a wall and a kitchen sink/garbage disposal/dishwasher on the other side of the wall. I plan on using the proper size drain and vent (2" in this case.) Can I send this combo (4 d.f.u.) drain into the 2" vent for the nearby toilet? It would make that dry vent stack 'wet' for about 2 vertical feet then increase to a 3" drain at the toilet.
I can find nothing in the code (2006 IRC) that would prevent me from doing this. I've checked and double checked the code for sizing, distances, everything seems to be code.
However...I have read in this forum and on other web sites a couple of things that concern me.
1. You cannot combine bath and kitchen DWV.
2. The maximum traps on any one vent stack is 6 (including a max of 2 toilets.) These roughed in two full baths eventually combine into a 3" vent stack that is exclusive for the basement baths.
If need be - I can cut and trench the basement slab and independantly drain the kitchen items - but I'd like to avoid that if at all possible.
Thanks in advance for any advise you can give me!