Minimum wall requirements

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by willl, Jul 3, 2008.

  1. willl

    willl New Member

    Messages:
    89
    Location:
    North Dakota
    Hello everyone,

    I believe that 3" pipe drains the best for toilets right. My question is if I am to run the 3" drain pipe in a wall what is the minimum size the wall should be. 2 by 6 or 2 by 4.

    The wall where a shower head is located within. What size should this wall be at. 2 by 6 or 2 by 4. Thank you:D
  2. jimbo

    jimbo Plumber

    Messages:
    8,997
    Location:
    San Diego
    3" pipe is 3½" OD. The OD of any fitting sockets, couplings, etc. is nearly 4",so that does not work in a 2X4 wall. Any wet wall is easier to work with if you make it 2X6. Trying to mount a shower valve for proper reveal, in a 2x4 wall, can be tough, but it is doable. It was the norm in a lot of construction. I have seen house where they put the drains in 2x4 walls, and just let the drywall bow out where necessary. Not pretty.
  3. willl

    willl New Member

    Messages:
    89
    Location:
    North Dakota
    OK, how about this question. If I have a room that is 4' by 5' with one toilet and one sink (probably one of those small pedestal sinks) and the toilet and sink are side by side where is the best place to put them side by side. Along the 4' wall or the 5' wall. Care to explain. Thanks
  4. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,226
    Location:
    Cave Creek, Arizona
    size

    Given the code spacing requirements, the only way they fit properly is usually the 5' dimension.
Similar Threads: Minimum wall
Forum Title Date
Plumbing Forum, Professional & DIY Advice, Tips & Minimum 'collar' for sweating pipe Dec 21, 2013
Plumbing Forum, Professional & DIY Advice, Tips & P-Trap to vent minimum, Weir to Vent question Aug 23, 2013
Plumbing Forum, Professional & DIY Advice, Tips & Minimum Trap Arm Length May 30, 2013
Plumbing Forum, Professional & DIY Advice, Tips & Minimum height requirement for a kitchen sink lateral drain? May 1, 2013
Plumbing Forum, Professional & DIY Advice, Tips & Minimum Length Between 3/4" Copper Fittings Mar 22, 2013

Share This Page