I am trying to install two new drain and vent lines for a washer one for the first floor and the second floor above each other can some one show me a photo how it should be done .thanks

Hi Bull:

Here is a pic. Of how I would do this.

My code book says that you can run all this on a 2" waste line and that you want to run an 1.5" parallel vent stack as drawn below.

You must penetrate the roof with a 2" vent or connect the washing machine vent(s) into a vent in the attic.

Tailpiece from the washer standpipe to the ptrap should be between 30"-36"

All waste pipes should be 2" with a 2" ptrap with cleanout at each washing machine. You also need to install a full size (2" in this case) dandy cleanout at the base of the stack.

The waste pie pitches at 1/4" pitch per foot of pipe and the vent also pitches, but pitches back toward the drain (see picture). You will also need to hang the horizontal pipes every 4 feet and at every floor to meet all code requirements.

Hope that helps get you started. Let me know if you need to discuss more here...

MARK