Naked Science Forum

General Science => General Science => Topic started by: DoctorBeaver on 12/03/2009 14:56:15

Title: How are tower cranes erected?
Post by: DoctorBeaver on 12/03/2009 14:56:15

This is a tower crane

(https://www.thenakedscientists.com/forum/proxy.php?request=http%3A%2F%2Fwww.germes-online.com%2Fdirect%2Fdbimage%2F50122124%2FJT5015_Intelligent_Tower_Crane.jpg&hash=9af8bf16b9ebe593f932ee0fe4e7254e)

Nice,eh? It's being delivered to Neil next Tuesday.  [:P]

But how will they erect it? Will Sheepie have to wear his high heels and put his finger on the join?

Title: How are tower cranes erected?
Post by: Don_1 on 12/03/2009 15:12:18

Erm, perhaps they use a crane to put it together.

Smart thinking eh!

Title: How are tower cranes erected?
Post by: DoctorBeaver on 12/03/2009 15:21:19

Quote from: Don_1 on 12/03/2009 15:12:18

Erm, perhaps they use a crane to put it together.

Smart thinking eh!

(https://www.thenakedscientists.com/forum/proxy.php?request=http%3A%2F%2Fbestsmileys.com%2Fdoh%2F2.gif&hash=fef6931e562a6dc5fd0fd29a97202c70) I can't think of another way. So do they have 2 cranes side-by-side to start with each gradually building the other higher?

Title: How are tower cranes erected?
Post by: Karsten on 12/03/2009 15:42:30

I believe such a crane has the ability to lift itself a certain distance so that a new segment can be added. Then the process is repeated.

Title: How are tower cranes erected?
Post by: Don_1 on 12/03/2009 15:53:37

Self erecting cranes do the whole thing themselves. (hmmm logical)

With other cranes, a mobile crane is used to lift the sections into place.

Title: How are tower cranes erected?
Post by: DoctorBeaver on 12/03/2009 16:40:35

Quote from: Don_1 on 12/03/2009 15:53:37

Self erecting cranes do the whole thing themselves.

Sounds painful

Title: How are tower cranes erected?
Post by: DoctorBeaver on 12/03/2009 16:41:00

Thank you, Karsten & Don

Title: How are tower cranes erected?
Post by: lyner on 12/03/2009 16:42:02

Quote from: DoctorBeaver on 12/03/2009 16:40:35

Quote from: Don_1 on 12/03/2009 15:53:37

Self erecting cranes do the whole thing themselves.

Sounds painful

Sound fun, actually.

Title: How are tower cranes erected?
Post by: DoctorBeaver on 12/03/2009 16:43:10

Quote from: sophiecentaur on 12/03/2009 16:42:02

Quote from: DoctorBeaver on 12/03/2009 16:40:35

Quote from: Don_1 on 12/03/2009 15:53:37

Self erecting cranes do the whole thing themselves.

Sounds painful

Sound fun, actually.

I'm starting to worry about you.

Title: How are tower cranes erected?
Post by: lyner on 12/03/2009 17:42:28

Don't go all Mumsy on me now.

Title: How are tower cranes erected?
Post by: lyner on 12/03/2009 17:48:23

The actual problem is not a hard one to solve. All you need to do is to have a long 'builder' section strapped to the side of the tower you want to build.  You haul up the builder section so that it sticks up beyond the top by the height of a tower section. You then haul up the next tower section, using the builder section, and bolt it in place. For the following section you just haul up the builder section another stage and repeat the process. When you've finished, you lower the builder section to the ground. Finally you assemble the jib around the tower and haul that  up to the top.

Title: How are tower cranes erected?
Post by: DoctorBeaver on 12/03/2009 17:52:35

You make it sound so simple I feel silly for having asked (https://www.thenakedscientists.com/forum/proxy.php?request=http%3A%2F%2Fwww.freesmileys.org%2Fsmileys%2Fsmiley-sad023.gif&hash=d738cff67e80d60c935c0b169ff1a0e8) (http://www.freesmileys.org)

Title: How are tower cranes erected?
Post by: Bored chemist on 12/03/2009 18:59:04

I bet you don't feel nearly as silly as all the people who build tower cranes using another (telescopic) crane.

Title: How are tower cranes erected?
Post by: lyner on 12/03/2009 19:19:15

It's probably a lot quicker with another crane to help you - but more expensive. A mobile crane costs at least £1k for a morning's hire.

Title: How are tower cranes erected?
Post by: Don_1 on 12/03/2009 23:54:42

Watch this http://www.youtube.com/watch?v=7ABy4punZB8 (http://www.youtube.com/watch?v=7ABy4punZB8)

Title: How are tower cranes erected?
Post by: DoctorBeaver on 13/03/2009 04:39:17

That was quick! Thank you Don.

Title: How are tower cranes erected?
Post by: lyner on 15/03/2009 00:11:46

I've seen some erections in my time but that beats them all.

Title: How are tower cranes erected?
Post by: Chemistry4me on 15/03/2009 00:18:36

Now that was quick!

Quote from: sophiecentaur on 15/03/2009 00:11:46

I've seen some erections in my time but that beats them all.

(https://www.thenakedscientists.com/forum/proxy.php?request=http%3A%2F%2Fbestsmileys.com%2Flol%2F17.gif&hash=5391a7a2f8361983fb91319c24e86c18)(https://www.thenakedscientists.com/forum/proxy.php?request=http%3A%2F%2Fbestsmileys.com%2Flol%2F17.gif&hash=5391a7a2f8361983fb91319c24e86c18)

Title: How are tower cranes erected?
Post by: yor_on on 15/03/2009 21:41:51

Isn't that how cranes live on.
Being erectile at the right place and moment.

Why should 'tower cranes' be different?
I've seen it on the telly, and it's true.