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Thread: Deflection at the unsupported end

  1. #1
    Associate Engineer
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    Confused Deflection at the unsupported end

    There is a mistake in the formula in the Structural Beam Bending Equations / Calculation Cantilevered Beam with Uniform Load http://www.engineersedge.com/beam_be...s/beam_b85.gif

    The correct formula is (w*l^4)/(8EI)

  2. #2
    Administrator Kelly Bramble's Avatar
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    Quote Originally Posted by cuksr View Post
    There is a mistake in the formula in the Structural Beam Bending Equations / Calculation Cantilevered Beam with Uniform Load http://www.engineersedge.com/beam_be...s/beam_b85.gif

    The correct formula is (w*l^4)/(8EI)

    Engineers Edge equation uses Total load where your equation uses Line load.

    Total load is clearly indicated on the load image.

    Different - not wrong..

  3. #3
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    understand now. its a bit confusing if you're not careful or pay attention.

  4. #4
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    Quote Originally Posted by cuksr View Post
    understand now. its a bit confusing if you're not careful or pay attention.
    Or assumptions.

    Dare I re-use one of my favorite quotations...
    I think it was the great British Engineer, Bazelgate who said, "...conspicuous failures from structures hastily contrived!"

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