Would Like To Use 2 x 6's For Garage Loft Floor Joists

Rob From Wisconsin Posted By Rob From Wisconsin, Sep 11, 2008 at 8:35 PM

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  1. Rob From Wisconsin

    Rob From Wisconsin
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    Nov 20, 2005
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    Recently had a Pole Building Garage erected & somewhat botched by
    a "fly-by-night" carpenter, and one of the annoying problems I have is
    relative to the loft area. Unfortunately, anyone who is over 5' 9" has to
    "duck" to walk up there. I would like to reduce the floor joists from 10"
    "I" joists to 2" x 6" Yellow Pine. Unfortunately, the run is approx. 15 feet,
    which exceeds code. Is there anyway I can overcome this, for example
    by "doubling" the 2 x 6's, or adding some additional re-inforcements??

    Then again, this is only a "loft", and not "living space"....

    Any input is appreciated.

    Rob
     
  2. stee6043

    stee6043
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    You may want to look into engineered trusses. Those are the joists with the particle board in the middle and 1x2 or similar on the edges. I personally would not recommend a 15' span with anything close to 2x6. These will not support much load at that span. On my deck I used 2x12's for anything exceeding 8'. 2x10's everywhere else. And all I'm supporting are people and snow. Code will depend on your load, but again, 15' is a loooong span for wood unsupported. Can you get away with a support pole in the middle?
     
  3. Corey

    Corey
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    Here are some tables...but they only go down to 2x8 on 12" centers with about a 14'5" span. I think one of the issues you might run into would be that two 2x6's side by side still won't be as stiff as a 2x10. I agree with the above, though...possibly engineered trusses with a short 'on center' spacing might work. But you'd probably almost have to talk to an engineer for the special scenario.

    http://www.raisedfloorliving.com/spantables-2.shtml
     
  4. Rob From Wisconsin

    Rob From Wisconsin
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  5. bill*67

    bill*67
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    i would agree with stee6043, engineered trusses are a solution to your problem.
     
  6. GVA

    GVA
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    cut the run in half with I beam or LVL with supports on each end. and use trusses, 2x6 is really small
     
  7. smokinj

    smokinj
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  8. oilstinks

    oilstinks
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    I have 2x6 bottoms on my trusses which hold a storage room but they are engineered.
     
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