replacing verticle cast with pvc

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by jim mills, Apr 12, 2014.

  1. jim mills

    jim mills New Member

    Jan 9, 2014
    I have a 75 y/o 4" cast iron stack that services one bathroom group that needs help. The stack measures 24' from basement floor up through roof. I would like to cut the cast & replace the bottom 8', replacing the san tee & lead closet bend, and re configure the tub & lav drains, eliminating the lead drain lines. Question is how can I support the cast while cutting the section out, and will PVC support the weight of the 16' of cast above it? I can use no hub cast, but PVC would sure be easier

    I would like to remove the entire stack, but the walls are finished all the way up through the attic dormer. Plaster & lathe, coves ceilings, plaster moldings. Just a nightmare...
  2. cacher_chick

    cacher_chick Test, Don't Guess!

    Jan 5, 2008
    Test, Don't Guess!
    Land of Cheese
    You will need to open the wall up enough to get riser clamps around the stack on each level.
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