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Thread: Vent Tie In

  1. #1
    DIY Junior Member
    Join Date
    Jan 2011
    Location
    Pittsburgh, pa
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    14

    Default Vent Tie In

    Hi-

    Is there a limit to what can be tied into a vent that goes to the roof line? i have a 1st floor toilet/sink that vents outside and up to the roof through a 1-1/2" line (code in my area, pgh)

    i want to tie in the washing machine plumbing vent and floor drain vent from my basement to it (probably tie it in outside since i have to go through the wall anyway for the dryer vent)

    thanks

    Dave

  2. #2
    Test, Don't Guess! cacher_chick's Avatar
    Join Date
    Jan 2008
    Location
    Land of Cheese
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    3,142

    Default

    Here the 1-1/2 would be fine for 24 fixture units as long as the maximum length does not exceed 50 feet. We would not be allowed to tie in outside the structure. A 1-1/2 vent is subject to frost closure and would not be permitted in many locations.

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