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  1. #1
    Charles Ybarra's Avatar
    Charles Ybarra Guest

    Default Floor joist overnotched for plumbing flange

    The 11 7/8 I joist is cut at the top about 3 inches wide and about 3 inches down into the joist. Is this a good place for a head out.

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  2. #2
    Join Date
    Mar 2007
    Location
    Knoxville, TN
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    2,560

    Default Re: Floor joist overnotched for plumbing flange

    Can't cut the top of I-joists.


  3. #3
    Join Date
    Sep 2009
    Location
    leonardo, new jersey
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    126

    Default Re: Floor joist overnotched for plumbing flange

    You need an experienced carpenter to go on the truss manufacturers web, look at the details. There are details of laminating ply wood with a compression space in between the upper and lower flange, then cutting the joist in the way of your trap(I ASSUME) and constructing a box header for the plumbing rough, please dont cut the top and be a ....

    If it is a trap is going for a toilet or tub or even a kitchen sink in a island, chances are its next to a partition load of some sort, these are manufactured joist that lock in as a designed system, depending what your looking at, you can create some trouble down the road by thinking its a small piece.

    Joseph Ehrhardt
    Building Forensic Specialist LLC

  4. #4
    Join Date
    Mar 2007
    Location
    Knoxville, TN
    Posts
    2,560

    Default Re: Floor joist overnotched for plumbing flange

    The OP was talking about an I-joist, not a truss.


  5. #5
    Join Date
    Sep 2009
    Location
    leonardo, new jersey
    Posts
    126

    Default Re: Floor joist overnotched for plumbing flange

    I do stand corrected, the I joist manufacturer shows the lamination and framing technique guidelines

    Joseph Ehrhardt
    Building Forensic Specialist LLC

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