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  1. #1
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    Default Valley rafter bearing

    Is there a code someone can give me that would pertain to this valley rafter being inadequately supported?

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  2. #2
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    Default Re: Valley rafter bearing

    Another angle.

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  3. #3

    Default Re: Valley rafter bearing

    You could go with 801.2 where it talks about transmitting loads to the supporting structural elements.

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  4. #4
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    Default Re: Valley rafter bearing

    R802.3 Framing details.
    Rafters shall be framed to ridge
    board or to each other with a gusset plate as a tie. Ridge board
    shall be at least 1-inch (25 mm) nominal thickness and not less
    in depth than the cut end of the rafter. At all valleys and hips
    there shall be a valley or hip rafter not less than 2-inch (51 mm)
    nominal thickness and not less in depth than the cut end of the
    rafter. Hip and valley rafters shall be supported at the ridge by a
    brace to a bearing partition or be designed to carry and distribute
    the specific load at that point. Where the roof pitch is less
    than three units vertical in 12 units horizontal (25-percent
    slope), structural members that support rafters and ceiling
    joists, such as ridge beams, hips and valleys, shall be designed

    as beams.


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  5. #5
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    Default Re: Valley rafter bearing

    Thanks Jerry. I'm no engineer, but I don't think that end of the wall was designed for that load. It was sagging and just did not look right.

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  6. #6
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    Default Re: Valley rafter bearing

    Quote Originally Posted by Frank Bombardiere View Post
    I'm no engineer, but I don't think that end of the wall was designed for that load.

    Frank,

    I'm no engineer either, but the end of THAT wall is not like any load bearing designs I've ever seen, and the end of the valley rafter needs to be on bearing at both ends.

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
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  7. #7

    Default Re: Valley rafter bearing

    I'm no engineer either, but that end is not the ridge.

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  8. #8
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    Default Re: Valley rafter bearing

    Quote Originally Posted by John Goad View Post
    I'm no engineer either, but that end is not the ridge.
    That's why you have to read the entire section given, it is taking into assumption that the valley rafter is just that, a valley rafter extending from one bearing point at the bottom (typically the exterior wall) to the ridge. Being as the bottom of the valley rafter is bearing on the bearing exterior wall, there is nothing which needs to be done.

    Except in this case the valley rafter is not really a valley rafter, it is a "partial" valley rafter (does not go from bearing to bearing) and therefore requires support (bearing) at that lower end.

    The code does not specifically spell out and address all the idiot things which goes on in construction, it can't, if it did you would need a large moving van to carry the code around with you, and even then you would find someone doing something stupid that the code writers did not think any one in their right mind would do.

    Which brings us back to the code being a minimum requirement document, it does not address using common sense nor does it address stupidity.

    Review R802.3, R802.3.1, R802.4, R802.5, then R802.6 to understand.

    Jerry Peck, Construction / Litigation Consultant
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  9. #9

    Default Re: Valley rafter bearing

    I'll keep it simple, read 801.2 to understand.

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  10. #10
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    Default Re: Valley rafter bearing

    Quote Originally Posted by John Goad View Post
    I'll keep it simple, read 801.2 to understand.
    That too.

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
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  11. #11
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    Default Re: Valley rafter bearing

    Frank

    From my perspective as a structural engineer the support does not look adequate and the sagging you talked about backs up your opinion. I think stating the valley rafter does not appear to be adequately supported is warranted.


  12. #12
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    Default Re: Valley rafter bearing

    I've seen this type of framing quite a few times. What should have happened was they should have installed a beam and cantilevered it so it would support the valley!

    An engineers letter would not work in my opinion on this. A letter recommending the fix yes!

    This is so wrong.


  13. #13
    A.D. Miller's Avatar
    A.D. Miller Guest

    Default Re: Valley rafter bearing

    This is so wrong.
    WC: Agreed.


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