Cekrauss
New Member
I'm considering a bathroom addition on a second floor and have been looking online for DWV schemas. The closest to what I'm considering is the WC connected to the main waste stack via a low-heel vent 90, then to a 3 x 2 wye. A sink connects to the 2" side of the wye. I'm wondering if I can use a double wye, 3 x 3 x 2 x 2, and run the bathtub drain off the other side? Other schemas I've seen used two separate wyes, one under the other, to connect the sink and bathtub. Thanks in advance.