Secondary vent stack from horizontal waste run?
Posted by Chris on July 11, 2004 at 16:27:10:
I am in the process of plumbing a master bath/laundry above a large great room. I want to install a second vent stack solely for this new room (sink, toilet, shower, washer). All of the fixtures in this new room will be connected to a waste pipe that travels horizontally through a chase in the ceiling below. I would like to connect a vent pipe somewhere on this horizontal run. Is there anything wrong with this? Most information that I have found shows the vent stack connected to the vertical main wast stack.

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