I have a year old home that had the rough plumbing done for full basement bathroom done when the house was built. I'm not thinking of finishing the bathroom, and I'm getting conflicting advice from two plumbers, and I was hoping to invoke some wisdom here to help me figure out who is correct.
Here's how it's setup. There is a sewer pit on the left along a basement wall. 3 feet to the right of that is a trap for a shower/tub (2") set back about 16" away from basement wall (I need to frame a wall with 2x6" along the basement wall), another 3 feet to the right is a 2" pipe right next to the wall (I'm assuming this is vent pipe/sink drain), and another 2 ft to the right there is a 4" pipe for toilet, also about 16" from the basement wall. The idea is that the bathroom group would have the shower/tub on the left, toilet in the center, and sink on the right.
One plumber is saying he simply needs to run a horizontal pipe to the sink from the 2" drain/vent pipe, the sink will be about 5-6 ft to the right of this pipe, and all is fine. The other plumber says that I can't vent the sink, shower and toilet via this one wet vent, and need to dig up the concrete and add another drain for sink. My understanding from reading the 2009 national plumbing code (I'm in NJ) is that my current setup is ok given the horizontal distances and vent pipe sizes. There is a capped 2" vent pipe in the ceiling above the vent pipe coming from the basement. The sewer pump will have it's own vent.
I've attached a picture (there are random pipes on the floor, ignore them, this room is currently used for leftover construction materials), I've highlighted the relevant pipes. I checked with the builder who claims that this was roughed for full bath, passed inspection and that's how all of his homes are done.
Many thanks!
Here's how it's setup. There is a sewer pit on the left along a basement wall. 3 feet to the right of that is a trap for a shower/tub (2") set back about 16" away from basement wall (I need to frame a wall with 2x6" along the basement wall), another 3 feet to the right is a 2" pipe right next to the wall (I'm assuming this is vent pipe/sink drain), and another 2 ft to the right there is a 4" pipe for toilet, also about 16" from the basement wall. The idea is that the bathroom group would have the shower/tub on the left, toilet in the center, and sink on the right.
One plumber is saying he simply needs to run a horizontal pipe to the sink from the 2" drain/vent pipe, the sink will be about 5-6 ft to the right of this pipe, and all is fine. The other plumber says that I can't vent the sink, shower and toilet via this one wet vent, and need to dig up the concrete and add another drain for sink. My understanding from reading the 2009 national plumbing code (I'm in NJ) is that my current setup is ok given the horizontal distances and vent pipe sizes. There is a capped 2" vent pipe in the ceiling above the vent pipe coming from the basement. The sewer pump will have it's own vent.
I've attached a picture (there are random pipes on the floor, ignore them, this room is currently used for leftover construction materials), I've highlighted the relevant pipes. I checked with the builder who claims that this was roughed for full bath, passed inspection and that's how all of his homes are done.
Many thanks!