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Thread: Crane lifting billboard topples over - GIF

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  2. The Following 6 Users Say Thank You to Altair For This Useful Post:

    baja (Nov 10, 2020), KustomsbyKent (Nov 9, 2020), Marnat3 (Nov 14, 2020), Rangi (Nov 9, 2020), Tonyg (Nov 10, 2020), trigger (Nov 9, 2020)

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    Supporting Member jimfols's Avatar
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    If all else fails, read the instructions.

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    Marnat3's Avatar
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    Supporting Member TheElderBrother's Avatar
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    So should the crane have been anchored somehow, or did they exceed the recommended load weight?

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    Quote Originally Posted by TheElderBrother View Post
    So should the crane have been anchored somehow, or did they exceed the recommended load weight?
    crane operators have a chart with lifting capacity at certain lift radii. Newer ones also have built in lifting scales with an alarm. I used to operate in the 15% fudge factor, but this one was way beyond that. Note the arch in the boom just before it topples.

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    They cannot afford to hire two or three cranes. But they are willing to pay for the destruction of the crane and billboard!.. The billboard behaves like a giant sail that can easily topples over one crane.

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    Unkle Fuzzy's Avatar
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    Actually there are 2 cranes. The unit sitting on the highway may have lowered too far or too fast and pulled the other unit over center.

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    good eye.....missed that. Dual lifts are difficult if the operators haven't worked together anyway. Hard to coordinate loads.



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