Portlandjib.com
 

https://youtu.be/x-A-aWqWbG8

With a set of BRIDGE BEAMS and your imagination, you can build

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 a cantilever bridge

a lift bridge

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the "excavator" has a scoop at the end of the pivoting arm

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an outside elevator

a working crane

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    A suspension bridge.


 

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A crane on wheels with a boom at 45 degrees

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A custom built "house"

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A "tower" crane

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  A trebuchet, with a falling counter-weight