You’re walking down the street and see a colossal tower crane. This giant structure seems as if it has always been there; however, it wasn’t when you passed the same road just a few days ago. It is quite surprising to see that happen in such little time. It might make you wonder about how such a structure could be erected in the blink of an eye. So have you ever wondered how tower cranes are built and how these metal monsters pop up on construction sites in just a few days? Well, if you have, you’ll be learning all the answers in this video!

Courtesy of Interesting Engineering

How tower cranes are built

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