Ask Experts Questions for FREE Help !
Ask
    stevanrk's Avatar
    stevanrk Posts: 38, Reputation: 1
    Junior Member
    		  
    #1

    Jun 17, 2006, 11:26 PM
    PLEASE HELP for basement bathroom
    Hi everyone,
    I was looking around on the forums and am still not sure about a couple of things. I was planning on adding a basement bathroom and relocating my current 4" stack from 4 feet away from the wall to right up against the wall. That part will be easy I think. The challenge is for venting the bathtub and toilet. They would be dumping into a 4 inch horizontal underground sewer line (that the stack dumps into that has everything upstream see attached pics). Both fixtures would be less than the critical distance from the stack for venting purposes. BUT, I read on another forum that if there are upstream bathrooms and such I cannot use the sewer line as a drain AND wet vent. If that's correct then do I need to vent the toilet AND bathtub or just the bathtub. In my picture of the PLANNED dwv I have a bathtub on the left and toilet on right. I will be putting a wall between the two and water supply for tub filler and shower on the left side. This wall COULD also house a vent for the bathtub if needed. Could the vent simply come up vertically from the horizontal 4" sewer line (at the 90 turn towards the stack for example?) with 4-4-2 combo. That's all I can think of for now. If the whole idea is incorrect, please let me know. Any other suggestions are also appreciated.
    PS a sink will also be placed opposite from the tub and toilet and will vent into the stack above the 3" input where the 2" dry vent takes off.
    Many thanks in advance!
    Regards,
    Stevan
    Attached Images
      
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #2

    Jun 18, 2006, 06:56 AM
    Before I can comment I'll need the drainage layout for the one and a half bath you're planing. Yes, you will have to run a vent on the tub. You are discharging a major fixture past a unvented minor one and that's a no-no.
    Regards, tom
    stevanrk's Avatar
    stevanrk Posts: 38, Reputation: 1
    Junior Member
    		  
    #3

    Jun 18, 2006, 07:50 AM
    Hi Tom,
    Sorry for the confusion and thanks for the quick reply! The 1.5 bath has already been finished prior to my arrival and is vented and dumps into the 3" pvc shown in the diagram, which subsequently dumps into the 4" stack in the basement. The vent for the 1.5 bath is separate from the vent in my diagram which takes off from the stack, so that should be all right. I'm only wondering about the new addition in the basement. So the toilet does not need a vent as drawn? The tub vent can be situated in the wall I talked about, before it dumps into the 4" horizontal sewer line? Thanks a LOT again.
    Best regards,
    Stevan
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #4

    Jun 18, 2006, 08:31 AM
    Hey Stevan,

    Looks like you have things pretty much under control. Good luck, Tom
    stevanrk's Avatar
    stevanrk Posts: 38, Reputation: 1
    Junior Member
    		  
    #5

    Jun 18, 2006, 08:32 AM
    You're the best Tom, thanks again!
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Basement bathroom [ 3 Answers ]

Is a 1.5inch diameter pipe thick enough to use as a shower drain? I have a basement with drain pipes already set up the 2inch pipe is too close to the toilet so is this pipe enough or do I have to bust up the concrete. I already checked it with a garden hose I turned it up all the way and it...

Bathroom in basement [ 1 Answers ]

We have a bathroom rough in in a basement with three pipes up from the floor one is obviously the toile but how do we know which is vent and which is drain? Or are both drains and the rough in is already tied to the vent?:

Basement Bathroom [ 2 Answers ]

I am in the process of finishing off a basement bathroom, I am going to tile the floor. There is a pipe approx. 6" high coming out of the floor for the toilet, when installing the floor how close to the floor should I have to cut the pipe off, how much room do I need to leave around that pipe, do I...

Another Basement bathroom job [ 1 Answers ]

Hello, Thank you for looking at this question and helping me out. Attached is a MS Word doc that should explain everything. I have read a lot of posts in here and I think I have all the info needed for someone to easily answer my questions. I do have a lot better pictures and drawings, but...

New Basement Bathroom [ 1 Answers ]

Hello, I have a question that I would like to see if you can answer. I have purchased a newly constructed home with a full basement. The problem is it was not stubbed for a bathroom. My question is, Where I want to locate the bathroom there is a floor drain. Can I cutup the concrete and tap into...

View more questions Search