Boilermaker27
New Member
I have a house that was built in 2004, I am in the process of getting ready to build a bathroom in the basement. The basement has a concrete floor and it also has roughed in plumbing. There are two pvc pipes sticking up through the concrete, one is a 4" pipe for the stool, fourteen inches behind that, center to center, is a two inch line for the sink drain, this is not directly behind the 4" line but off to the side a bit, in the subfloor above is a pvc stub intended for a vent line, this line runs up into the attic and connects to the main vent line. The concrete wall is located four feet from the center of the 4" line. In between the 4" line and the wall is a pit with a two inch line which is blocked off. It seems to me that when I stud in the wall, which will lessen the 4 foot line by about five or six inches there will hardly be enough room for the shower, and sufficient clearance between the shower and the stool. I am in the process of breaking up the floor so I can redirect the two inch line in the pit the other direction which will put the shower completely clear of the stool. My plan is to cut the two inch line back, a distance yet to be determined, install a 45 degree elbow in the opposite direction as the present, and then run that line to the drain of my new shower. My main question is this. The two inch line in the pit goes under the concrete floor and I am wondering if there is a trap in that line before it gets to the main sewer line, or, do I need to put a trap directly under the shower drain? I have uploaded a picture for clarification.