Best way to move sink plumbing and drainage


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Old 12-20-17, 06:58 PM
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Best way to move sink plumbing and drainage

Hello everyone,

We're redoing our 2nd floor master and I need to move the sink on the right to the far end of the room. What is the best way to make this happen?
 
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Old 12-21-17, 12:36 AM
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Will this still be a single cabinet with two sinks just further apart?
 
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Old 12-21-17, 03:40 AM
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It till look like this. We removed a linen closet to make this happen so Iíd like to maximize the space when moving the lines.
 
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Old 12-21-17, 05:11 AM
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I would probably use a Sawzall to remove the sideways 2x4 in the former partition by cutting the nails. Then notch 4 more studs and use stud shoes, in the same manner as the other notches.

You should also have a dedicated vent for the far sink, so that will also need to be notched into the studs above the drain, maybe 5 ft high or so... again, using stud shoes.

If you are worried about the continuity of the wall due to the number of notches and stud shoes, add 2x2s over all the studs on that side of the wall after the plumbing and notching is complete. Notches and stud shoes are fine on an interior non load bearing wall.

And I believe that properly, the main line should have a double fixture tee with the left sink coming into the cabinet left of the stack, and the right fixture coming in from the right. We have professional plumbers here that will be along shortly to advise.
 
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Old 12-21-17, 06:43 AM
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So at 5 ft I do a branch type vent from the main stack as well? So it will look like a big circle?
 
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Old 12-21-17, 10:12 AM
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Yeah when you move it you need to revent it...Its not to code AFAIK as it looks..

But whats that sideways 2x4 in the middle? Is that some type of support that needs to be drilled through? Im not a carpenter...
 
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Old 12-21-17, 10:14 AM
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Mike, he said they removed a small linen closet, so that's where a wall used to be. That sideways one could just as well be removed.
 
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Old 12-21-17, 10:19 AM
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I added the vent/drain grn line on left so there is no confusion...
 
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Old 12-21-17, 04:33 PM
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Do you think I have enough drop to simply cut the right drain off and extend it to the right? Or will
I have to cut off the main stack to make this happen?

Also, If the drain rises to the level of the shut offs what would be the best location to put the shut offs. I donít know the exact location of the finished sink so where would be the best place to put them? Can the drain pipe come out inbetween the shut offs?
 
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Old 12-21-17, 06:26 PM
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You can extend it, but at the end you will need to elbow up and add a tee. Then vent as I show... But you may be too high on the right sink... That's why I suggested lowering it all.. That way there will be no error.

You must vent like I show... The current config you have is not to code AFAIK...with current codes
 
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Old 12-21-17, 07:06 PM
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Understood. I'm going to do it your way. I'll report back with results.
 
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Old 12-28-17, 07:19 AM
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On the right side, rather than branching at 5ft like you depicted can I go to the attic and branch off that way I donít have to notch all those studs?
 
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Old 12-28-17, 09:23 AM
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Yes take it all the way up to attic and then tie into a vent up there.
 
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Old 01-17-18, 08:03 PM
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Here is the completed product. Let me know if something doesn't look right. I sistered several of the 2x4s just for good measure. I added Simpson strong ties where I could.
 
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