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  1. #1
    John Guest

    Default Connecting wood to metal I beam

    What is the best way to connect 2x10 floor joists to an 8" steel I beam? It will be a flush (blind) beam. I've done many that the joists sit on top of the beam, but haven't run into this before. Thanks in advance for any help.

  2. #2
    Vince Fontana Guest

    Default Re: Connecting wood to metal I beam

    John,

    Look in your Simpson Strong-Tie Catalog.
    They have joist hangers with an added flange that bends over the top of the beam. That is how we did it on a job 2 years ago. It keeps the top of the joist flush with the top of the plate on top of the beam.

    Vince.

  3. #3
    GACC Dallas Guest

    Default Re: Connecting wood to metal I beam

    John,

    Has the man who engineered the steel made any suggestions?

    Ed. Williams

  4. #4
    Mike Sloggatt Guest

    Default Re: Connecting wood to metal I beam

    Typically, we bolt a double 2x to the inside of the steel beam. ( prepped by fabricator)

    Than hang the joist with framing connectors as normal -

    Mike

  5. #5
    GACC Dallas Guest

    Default Re: Connecting wood to metal I beam

    Mike,

    Youbetcha.

    That's the way it should be done.

    Please note "prepped by fabricator".

    Very important point.

    Nobody should go drilling holes in the webbing of an I beam without consulting the structural engineer.

    Ed. Williams

  6. #6
    John Guest

    Default Re: Connecting wood to metal I beam

    Thanks guys. We had 2 metal beams that the joists spaned between. Then joists from the beams to a wall. So there was alot of drilling and bolting to do, and a pile of hangers to nail. The holes were already in the I beam, so I didn't have to drill them.

  7. #7
    Bill S. Guest

    Default Re: Connecting wood to metal I beam

    Bolting 2X inside the flanges of the I-beam works. Just make sure that the faces of the 2X protrude from the I-beam about a 1/4" so that the joist hangers do not contact the I-beam. If the joist hangers are allowed to touch the I-beam you run the risk of noise whenever someone walks over the I-Beam from the 2 metal surfaces rubbing agaist each other. Start with the 2X and then add what you need behind the 2X to achive the 1/4". We sometimes have to rip some waste siding or subfloor to act as a spacer. I have had my share of noises when using the joist hangers that have the flange that goes over the top of the I-Beam or using the regular joist hangers and allowing them to touch the I-beam. Much easier to build it right than to try and fix a noise problem later.

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