(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 12 of 12

Thread: Bathroom rough in

  1. #1
    DIY Junior Member GeronimoDF's Avatar
    Join Date
    Oct 2009
    Location
    Long Island, NY
    Posts
    25

    Default Vent and concrete question

    Hi,
    I have a bathroom on a slab. How does this rough in look?

    Main Line: 4 inch
    Toilet: Vented with a 2 inch rolled wye
    Sink: Vented with a 2 inch sani-tee
    Shower: Vented with a 2 inch rolled wye

    Here is a nice link to Bert Polk's plumbing tips


    Last edited by GeronimoDF; 10-05-2010 at 05:05 PM.

  2. #2
    Moderator & Master Plumber hj's Avatar
    Join Date
    Aug 2004
    Location
    Cave Creek, Arizona
    Posts
    25,612

    Default

    It works, although I am not sure if it is how I, or other plumbers, might have done it. The 2" flat shower vent would not pass inspection in most areas, and the toilet's vent could also be suspect.

  3. #3
    DIY Junior Member GeronimoDF's Avatar
    Join Date
    Oct 2009
    Location
    Long Island, NY
    Posts
    25

    Default

    Thanks for geeting back to me. The shower vent was going to rolled again. How would you do this?

  4. #4
    Moderator & Master Plumber hj's Avatar
    Join Date
    Aug 2004
    Location
    Cave Creek, Arizona
    Posts
    25,612

    Default

    How I would do it would depend partly on how far the main line is below the floor, and the distances between the various fixtures. Just "rolling" the vent does not eliminate it from being a flat vent, it just minimizes how much stuff is going to get into it.

  5. #5
    DIY Junior Member GeronimoDF's Avatar
    Join Date
    Oct 2009
    Location
    Long Island, NY
    Posts
    25

    Default

    How about vent the tiolet like this? I do have the room underneath the slab.

    Here is a nice link to Bert Polk's plumbing tips




    or like this...... might work better

    Last edited by Terry; 10-01-2010 at 11:10 AM.

  6. #6
    Forum Admin, Expert Plumber Terry's Avatar
    Join Date
    Aug 2004
    Location
    Bothell, Washington
    Posts
    14,191
    Blog Entries
    1

    Default

    You could wet vent the shower with the lav if it's within five feet.

    Here is a nice link to Bert Polk's plumbing tips

  7. #7
    DIY Junior Member GeronimoDF's Avatar
    Join Date
    Oct 2009
    Location
    Long Island, NY
    Posts
    25

    Default

    It is within five feet..... I will wet vent the shower with lavoratory. Which way is better to vent the toilet in the above pictures? The second picture I think would work better in my case but it looks like there is more of chance for decreased flow. Or it doesn't matter?

  8. #8
    In the Trades Wally Hays's Avatar
    Join Date
    Nov 2009
    Location
    New England
    Posts
    652

    Default

    Neither vent will pass inspection, even with the rolled wye fitting. You don't need to vent the toilet separatly, it can wet vent off any other fixture in the group
    Perception is 3/4 of reality

  9. #9
    Moderator & Master Plumber hj's Avatar
    Join Date
    Aug 2004
    Location
    Cave Creek, Arizona
    Posts
    25,612

    Default

    Well, if you can visualize it, I might run the vertical pipe behind the lavatory with a sanitary tee for the sink. The toilet would go into a sanitary tee with a 2" side inlet. It would be turned to it faces the toilet's location with a closet bend on the end of it. The shower would go into the side inlet. EVERYTHING would be vented through the single riser.

    Last edited by Terry; 01-20-2012 at 08:58 AM.

  10. #10
    George the Plumber Gsalet's Avatar
    Join Date
    Sep 2010
    Location
    San Francisco
    Posts
    83

    Default

    I guess the big question is were is the bathroom being installed? in San Francisco wet venting is not allowed, each plumbing fixture must have it's own vent. I was always told plumbing is like driving a car the less turns the faster you can go. It's fun seeing how we all do the installation differently

  11. #11
    Moderator & Master Plumber hj's Avatar
    Join Date
    Aug 2004
    Location
    Cave Creek, Arizona
    Posts
    25,612

    Default

    quote; was always told plumbing is like driving a car the less turns the faster you can go.

    That was true until the delivery services found out that it was faster to make three right turns than one left turn in traffic.

  12. #12
    DIY Junior Member GeronimoDF's Avatar
    Join Date
    Oct 2009
    Location
    Long Island, NY
    Posts
    25

    Default

    I want to thank everyone who has taken their time to contribute to this thread. I figured everything out. The last tensing piece of the puzzle is this:
    Basement will have a laundry machine
    First floor will have a bathroom

    The main line is 3 inches.
    Can I vent everything off a 2 inch line?
    By my calculations it will be fine.

    Clothes Washer Standpipe: 3FU
    Water closet: 4FU
    Lavatory: 1FU
    Shower stall: 2FU
    Total: 10FU

    A 2 inch pipe has a max of 24 DFU.

    Ohhh one more question!

    After I break up the concrete, I put a 6 mil poly for the vapor barrier, then I cover the new PVC pipe with sand, pack it down, and then rock and then the concrete right?

Similar Threads

  1. Bathroom rough in move
    By bill g in forum Plumbing Forum, Professional & DIY Advice, Tips & Tricks
    Replies: 12
    Last Post: 08-09-2009, 08:49 AM
  2. Should I rough-in for a bathroom?
    By kxmotox247 in forum Plumbing Forum, Professional & DIY Advice, Tips & Tricks
    Replies: 33
    Last Post: 05-27-2007, 06:58 PM
  3. bathroom rough in
    By lionhound in forum Plumbing Forum, Professional & DIY Advice, Tips & Tricks
    Replies: 1
    Last Post: 04-22-2007, 04:51 AM
  4. Bathroom rough in
    By wolfpack in forum Toilet Forum discussions
    Replies: 10
    Last Post: 01-30-2007, 07:40 AM
  5. another bathroom rough in
    By jakedvm in forum Remodel Forum & Blog
    Replies: 6
    Last Post: 01-09-2006, 09:21 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •