Plumb shower in concrete

Discussion in 'Showers and Tubs' started by Roadman33, Oct 7, 2019.

Help Support Plumbing Forums by donating:

  1. Oct 7, 2019 #1

    Roadman33

    Roadman33

    Roadman33

    Member

    Joined:
    Oct 7, 2019
    Messages:
    6
    Likes Received:
    0
    Location:
    Washington
    Prior owner did a bad job building a shower pan...no liner

    My plan to jackhammer up floor run new 2"...once I opened it up this is what a saw? What are those capped off pipes?
    Also, it seems like the one they have plumbed to the shower drain is 1"1/2"..not 2"!!

    1. How would you plumb this?
    2. Do I need to add a vent?
     

    Attached Files:

  2. Oct 7, 2019 #2

    breplum

    breplum

    breplum

    Professional Professional

    Joined:
    Nov 14, 2017
    Messages:
    237
    Likes Received:
    90
    Location:
    Lafayette, CA
    No way to know what we are looking at. Sorry.
     
  3. Oct 7, 2019 #3

    Roadman33

    Roadman33

    Roadman33

    Member

    Joined:
    Oct 7, 2019
    Messages:
    6
    Likes Received:
    0
    Location:
    Washington
    First pipe 1.5" with p trap and capped pipe coming up in wall
    Second pipe 2" pipe capped coming up in wall. !!! I think this is the one I need to demo out to add new shower drain. Just don't know if i need to add vent.
    Third pipe 3" stack with bath above
     
  4. Oct 7, 2019 #4

    Roadman33

    Roadman33

    Roadman33

    Member

    Joined:
    Oct 7, 2019
    Messages:
    6
    Likes Received:
    0
    Location:
    Washington
    I I think I have it so I'm going to tap off the one and a half get rid of that old pee trap

    Then I'm going to tap in to the 2-in and run tea across to where I want my new p-trap and shower and I'm good no vent necessary?
     
  5. Oct 7, 2019 #5

    voletl

    voletl

    voletl

    Well-Known Member

    Joined:
    Dec 18, 2014
    Messages:
    696
    Likes Received:
    217
    Location:
    New York
    You absolutely need a vent can't help you any more than that until you bust up the concrete
     
  6. Oct 7, 2019 #6

    Roadman33

    Roadman33

    Roadman33

    Member

    Joined:
    Oct 7, 2019
    Messages:
    6
    Likes Received:
    0
    Location:
    Washington
    Because I'm less than 5 ft to the main stock I thought I didn't need a vent?
     
  7. Oct 9, 2019 #7

    Diehard

    Diehard

    Diehard

    Well-Known Member

    Joined:
    Aug 19, 2017
    Messages:
    1,819
    Likes Received:
    313
    Location:
    North Reading, Mass.
    If it is 2" and at a 1/4"/ft slope, you should be good.
    UPC Trap arm chart.jpg
     
  8. Oct 9, 2019 #8

    Roadman33

    Roadman33

    Roadman33

    Member

    Joined:
    Oct 7, 2019
    Messages:
    6
    Likes Received:
    0
    Location:
    Washington
    Since I've found that the plumber who plumbed the house put a 1.5" vent capped off above these to tie a vent into!

    So my play (tell me if I'm wrong) is to break up the floor and tie into the 2" with a sani Tee, run my pipe over to p trap 1/4" slope. Then where the vertical 2" sticks up in the wall reduce that to 1.5" and tie into the vent.

    Sound good?

    Thanks!!
     
  9. Oct 10, 2019 #9

    Roadman33

    Roadman33

    Roadman33

    Member

    Joined:
    Oct 7, 2019
    Messages:
    6
    Likes Received:
    0
    Location:
    Washington
    Here's a pic of what I found
    2" on the left
    2 pipes 1.5" one capped and the otherstubed out.
    Plan to cap both the 1.5" pipes
    Sanity T into horizontal 2" over to my shower p trap. And vent the 2" up into a 1.5" above.

    Okay?
     

    Attached Files:

Share This Page