Thanks for the help with my projects. I have the tile bored and can
feed 3" schedule 40 pipe through the wall and under the floor. I
have most of the PVC connectors for the pipe. My questions at the
moment concern the shower drail, toilet flange, and the 1 1/2"
sanitary tees for two sinks (bathroom and kitchen, the process
should be the same).
My shower drain and toilet flange question is how big of a hole do
I cut (with a jigsaw) into the 1"x6" floor boards for these. I was
at my closest supply place and can get a 3" hole saw that will allow
the smooth portion of the PVC train to fit through the floor or a
3 1/2" hole saw is big enough to allow the threaded portion to also
fit through the wood floor. This drain fits in a pre-made hole in
a shower base (Home Depot
I know this may not make much sense without a picture. I'll try to
create a picture later. I have the 3" drain that goes to a 3"/2"/3"
sanitary tee. The 2" goes to a 2"/2"/2" wye (Y). Part of this wye
goes on to the shower. I have a 2" P trap for the shower. The wye
goes to another wye, 2"/1 1/2"/2". The 1 1/2" goes to a bathroom
sink and the 2" side goes to a washer box. I'll plumb in the washer
box now because it's easier though I don't plan to ever have a
The question for the two sinks is I'll run 1 1/2" pipe up through
a hole bored in the bottom plate, up the wall to a sanitary tee.
The portion of the tee that continues vertical to an in wall on
demand vent (AAV, air admitance valve). The hole of the tee that
points out of the wall and out of the sheet rock to an in cabinet
P trap... how does the tee connect to the P trap? Do I glue the two
together or is there some sort of extension thing I glue to the tee
that has a compression fitting for the P trap?