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The 3D drawing above is just what the house has currently (minus the existing laundry, as it's wrong): WC, Lav (31" to the right from lav trap to main stack), and Bath (left fixture in the 3D...

Trying to use some 3D software this is pretty close to what my existing plumbing situation is. I did not included the existing laundry because I already know it's very wrong and it's a little...

The right hand drawing is an accurate representation of how the main sewer drain is, 3" horizontal, 90 up through the floor with a cleanout, coninuing up the the main floor bath. I should have fixed...

Hi Terry, a 2" vent for the toilet is required when the vent is longer than 72" the 3" according to UPC? Just want to clarify!

I should search some more and find out about max. vent lengths for my...

So with the distance, I can basically copy the above except adding an additional vent for the sink. (I'll use a 2" drain for washer, a separate 1.5" drain for the lav sink, each with their own vents...

That's correct. I was hoping if I used the appropriate fittings and vents I could use a 2" standpipe drain tied in with the lav sink. If this is a problem I will plumb a 2" drain all the way to the...

That's correct. Eliminating the sink with the 1.5" drain, installing a 2" stand pipe for stackable laundry.

Hi Guys,

I just moved into our first house last week and we are re-doing the basement and adding a half bath. I've attached a sketch showing the old and the new.

Due to the laundry/bath config...