Ask Experts Questions for FREE Help !
Ask
    joeplumber's Avatar
    joeplumber Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Nov 7, 2010, 01:29 PM
    Bathroom drain venting
    I live in an older home with only one bath on the second floor. I plan to turn part of an existing room on the first floor into a bathroom. This will be a full bath with a toilet, sink and shower. The main DWV line is 4" C.I. and about 35' from the new bathroom. I plan to run 4" PVC and tie into the C.I. My question is do I need an additional vent for the new bath? If so, what is the best way to do it? What size should it be? I planned to run all the drain lines under the floor then connect to the new PVC.
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #2

    Nov 7, 2010, 02:34 PM
    Quote Originally Posted by ;
    My question is do I need an additional vent for the new bath? If so, what is the best way to do it? What size should it be?
    Hey Joe,
    Every fixture that has a trap has to be vented so the answer is yes.
    The good news is that if wet vents, (seen image) are allowed in your area all you will need for your group is a single vent. You will maintain 2" on the lavatory drain and vent. Good luck, Tom
    Attached Images
     
    ivanh's Avatar
    ivanh Posts: 52, Reputation: 3
    Junior Member
    		  
    #3

    Nov 8, 2010, 01:22 AM
    Yes you will need to vent those lines. The vent line must be at least half the size of the waste pipe but not less than 1-1/2"

    Go to Google Images and type in " WASTE AND VENT DIAGRAM" you might be able to find your configeration in one of the many pics there.

    Have fun!
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!

Dowstairs bathroom drain venting [ 1 Answers ]

I am remodeling my upstairs. I want to remove a wall to enlarge the space,but there is a drain vent pipe in the wall. Can I run it out a side wall. And if so what should I cover it with, so critters don't get in.

Venting Bathroom [ 1 Answers ]

Hello, I want to install a bathroom in the Attic. Can I stack vent this bathroom too? Thanks.

Venting a bathroom [ 1 Answers ]

When installing a ceiling vent/fan in a bathroom, what would be required by code (NJ). Can it be flex vented into an attic towards a soffit or must it be out the wall or roof?

Drain / venting questions for bathroom remodel [ 3 Answers ]

Is this OK? Two story house with full basement. Remodeling master bath on second floor. Need to run new toilet drain, shower drain and drains for two sinks. While ripping out the sheetrock in the area I discovered a 2" vent coming up from the half-bath and laudry room on the first floor. I...

Basement Bathroom Drain & Venting [ 1 Answers ]

Any help with the layout would be helpful. I would like to start tearing up the concrete this weekend if I can get this figured out. I would like to put in a bathroom in my basement and move the laundry area. The existing laundry si where the proposed shower/existing floor drain is. I have...

View more questions Search