This is related to my HVAC thread.
We have a 1/2 bath upstairs that's built for hobbits. We want to move it across the hall. Between the two locations there was a wall that separated 2 rooms. The wall was removed. The waste pipe for a toilet needs to run from the location of the new bathroom, across to the existing bathroom. The joists for the second floor are 2x6" and run the direction that the plumbing needs to run. The issue is that where the wall was, there is what looks like a 4x6 beam in the floor. To run the waste pipe would mean drilling a large hole through that beam. THe wall under the beam was removed years ago. Where the wall was, as far as I can tell, there are two vertical 2x4s that are stacked and parallel to the walls. They support two horizontal 2x4s that run under the 4x6 and are air gapped by about 3/4".
I'm thinking that if we wanted to cut a hole through the 4x6 for the waste pipe of the toilet, we'd need to beef up the supports where the wall was. I actually plan to put the wall back to turn the existing single long room back into 2 rooms. I was thinking of having a "window" in that wall that would allow a TV to be set somewhat into the wall. The window wouldn't be completely open, there would be drywall on one side and the other side would allow the TV to sit into the wall. I'd be gaining the depth of the framing. I was thinking that I could easily add a 4x6 at the top of the wall with plenty of support under it so that cutting a hole through the existing 4x6 wouldn't be an issue.
Granted, no one's thoughts on this matter would be considered binding, but I'm wondering what the educated guesses of the board are.
existing wall with extra supports in yellow and proposed location of hole in yellow.
This shows the location of the old toilet (top) and new toilet (bottom) and path of the waste pipe (brown). The two vertical red lines are the path of the joists that support the second floor. The blue rectangle is the 4x6 beam that is in the ceiling and would require a hole for the waste pipe to pass through. Under or approximately under the red line on the right is the location of a wall that runs the length of the house downstairs (long central hall). Where the waste pipe jogs right at the old toilet is approx where it goes down inside an interior wall (right side long, vertical red line). And yes, where the blue rectangle stops is as far as it runs. To the right of the right side red line, I can see all of the way to the other side of the house through the floor.
Proposed change to wall and supports. (this is very informal, not to scale, and just spitballing at this point. We are just trying to determine how feasible this is before we schedule the plumber to come out and rough in the plumbing.
