Basement plumbing revision - novicepiper

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NovicePiper

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REVISION to thread: image 1 is the system that was approved - i had to flip the tub 180 so image 2 is how it stands right now.

the link below is the original thread - i started this one due to revisions. I think many people that kindly contributed last time think its dead. no responses:)

https://terrylove.com/forums/showthread.php?t=20538

Page 3 last image post

QUESTIONS -
1) how do i connect the tub so it vents correctly?
(as redwood said 'tub has lost its wet vent'.

2) do i now need to cut into the blue pipe and also while doing this can i add in the floor drain.

if someone would like me to submit a proposal (though i have very lttle experience) i can do so - im not here to waste anyones time - just here to learn

many thanks novicepiper
 

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hj

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drain

You have turned your tug's P trap into an illegal and poor functioning "S" trap. There are several ways it could be corrected, but without knowing the actual planes of the various piping, and the layout of the finished room, it cannot be done from your drawing.
 

Redwood

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Note the reversal of the wye and the elbow between the 2 pictures. This is what created the illegal s-trap. You could do it shown in the second drawing but you would need to run a vent to the tub line.
 

NovicePiper

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Note the reversal of the wye and the elbow between the 2 pictures. This is what created the illegal s-trap. You could do it shown in the second drawing but you would need to run a vent to the tub line.

so i added the vent to the tub (something like this?) - would this now correctly vent the tub? - the position of the actual vent on the tub waste line would prob need positioning better - im not trying to be a plumber...thats apparent - im just trying to learn - so thanks to the both of you - HJ and Redwood :)

any feedback would be great

thanks again novice piper
 

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NovicePiper

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You have turned your tug's P trap into an illegal and poor functioning "S" trap. There are several ways it could be corrected, but without knowing the actual planes of the various piping, and the layout of the finished room, it cannot be done from your drawing.

could you list some of the sveral ways HJ - (I have sort of added the vent to the tub line(re redwoods rec - though this is improperly positioned!?) - basically re planes of pipes, no pipes can go higher than the wet vent to the right of the closet/toilet (though it looks like it on the image - i did this for speed - this layout is avchievable if correct). I could cap the wye off the wet vent and cut into the 4" and somehow add the floor drain and tub waste and vent both through a dry vent!?

does that sound like a plan - I respect any feedback anyone has on here as your all full of excellent ideas etc - any directions would be most appreciated.

thanks noivicepiper.
 
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Plumber Jim

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I would remove the 2" wye you have going into the 3" for the lav and put a 90 there and then take the drain for the lav and run it down the new drain you just did for the tub. that saves to you pipe and you won't end up with a horizontal dry vent.
 

hj

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vent

One way would be to ditch the y and install a combination Y-1/8 bend with the inlet horizontal and run to the tub P trap, depending on how long the branch would be. Another one might be to install a Y near the trap, and then extend it up in the wall where the faucets will be installed. As I said, the best way depends on more information than we have as to what the room is going to look like.
 

NovicePiper

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I would remove the 2" wye you have going into the 3" for the lav and put a 90 there and then take the drain for the lav and run it down the new drain you just did for the tub. that saves to you pipe and you won't end up with a horizontal dry vent.

Sorry i dont understand that at all :( - if i was to remove the 2" Wye going into the 3" then how would i now run my waste from the tub and lav. i prob got that wrong put thats the way im reading/understanding it!? could you explain a little more please...if you have the time

thanks

np
 

NovicePiper

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here is the revision for what i think will work based on redwood and HJ - HJ I took your second example as this would be the easiest to do....either one please comment as and when convenient to do so -

would this work?

could i also tie in the floor drain to the yellow waste coming from the tub - i would connect it with a wye!?

& this is a very quick visual of what the bathroom would look lke (layout)

many thanks in advance np
 

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hj

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The vent looks good. Ideally, the floor drain should be connected to the main drain system with its own vent. If you connect it to the tub drain, or any other fixture, it will flood during drainage if the line gets even partially obstructed.
 

NovicePiper

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The vent looks good. Ideally, the floor drain should be connected to the main drain system with its own vent. If you connect it to the tub drain, or any other fixture, it will flood during drainage if the line gets even partially obstructed.

So the way the tub is setup now will drain as it's supposed too... (I think you answered that - just making sure)! thanks in advance HJ / everybody else :)

Thanks very very much HJ for your response - re the floor drain when you say its own vent you mean out to the roof (cannot be attached to existing vent line)?
 
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