Cranes!!!

[davesparks]

But why should the crane move about, should it not move around so much and how does the crane driver deal with this everyday.

Why wouldn't it move about? It's a tall thin structure, of course it's going to bend a bit, like a long length of strong timber will bend easily when a short length won't.
If it was built so rigid that it doesn't bend a bit then it would likely just snap!

 

[Resu]

But why should the crane move about, should it not move around so much and how does the crane driver deal with this everyday.

What's with all the weird questions? I'm sure there's a crane forum somewhere on the interwebs!

 

[snowhead]

What's with all the weird questions? I'm sure there's a crane forum somewhere on the interwebs!

That'll be this then; Lifting World ? Index page

 

[Harni]

They are designed to move about in the wind. if they were rigid, in high winds eventually they would just snap like a twig. Build them with some play in the joint and they can move with the wind and absorb shock better.

 

[Guest111]

I read somewhere in a book on buildings that Blackpool tower moves 7 feet from vertical in a high wind,you can feel it move when your up top.Anyway I was talking to one of the staff and a group of people were stood listening,some looked nervous when I mentioned the amount of movement.The staff member was quick to deny this,trying to ease peoples worries, "in that case I'll go down then,because we all know rigid objects snap eventually" I said.Some of the faces were a picture.