Chicago sewer under and thru concrete

Discussion in 'Illinois Plumbing Code Questions' started by Captain James, Oct 27, 2016.

  1. Captain James

    Captain James New Member

    Joined:
    Oct 27, 2016
    Location:
    Illinois
    First post - Property owner looking to make sure work in house done properly to code. Need sewer repairs under concrete floor (collapsed clay tile), and removal of abandoned floor penetrations (old stack, old LT, etc.).

    My understanding is that cast iron pipe is ok thru concrete, as clay tile is only ok for under concrete and pvc only ok for above concrete?

    New sewers will be clay, then iron for floor penetrations, then adapt to pvc as needed above floor?

    What about green sdr 35 pipe? Can plumbers use plastic sewer pipe adapted to clay? If so is the floor penetration still done with iron?

    Lastly, with all this considered, how can I install a backwater/check valve in the basement floor? What material should it be? (house is up against sidewalk so can't put backwater in yard)
     
  2. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    Don't do it!
     
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  4. hj

    hj Moderator & Master Plumber Staff Member

    Joined:
    Aug 31, 2004
    Occupation:
    Plumber
    Location:
    Cave Creek, Arizona
    Clay is NOT approved for under concrete inside a building, and if you install a BWV in a clay sewer it will just force it to leak under the floor and possibly destroy the concrete floor.
     
  5. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    Even clay in the yard is going to be invaded by roots. At least it will not be covered by concrete when it comes time to be replaced with PVC.
     
  6. J.w.

    J.w. New Member

    Joined:
    Jul 14, 2018
    Location:
    Oak forest
     
  7. J.w.

    J.w. New Member

    Joined:
    Jul 14, 2018
    Location:
    Oak forest
    New.pilot.program for pvc and alternative I'll approved plumbing codes
    Permit request for Chicago oct17 -12/18
     
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