Another venting question

Discussion in 'Canadian Plumbing Code Questions' started by Willie Two, Nov 4, 2011.

  1. Willie Two

    Willie Two New Member

    Messages:
    36
    Location:
    British Columbia
    When going across to the main stack to vent the bathroom sink. Can the vent pipe go inside the water wall cavity ( it's 2 x 8 ) instead of through the top plate / insulation and then across to the 3 " stack in the attic? Assuming it is well above any fixture drains. It's not a wet vent. Thanks
  2. cacher_chick

    cacher_chick Test, Don't Guess!

    Messages:
    3,279
    Location:
    Land of Cheese
    Sure, the common rule is that any horizontal vent piping needs to be at least 6" above the flood rim of the lavatory and pitched towards the drain.
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