12-13-2018, 06:55 PM
(12-13-2018, 06:19 PM)Momo26 Wrote: It most definitely isn't taller than the other crane in the background....but I don't know how cranes work. Is it a set height regardless of size? Does the main vertical part become one of the elevator shafts?
They have a mechanism that allows the crane to rise as the building gets taller, and they'll put extra pieces (masts) to extend the height of that crane. I'd say that currently that crane is good for 8 floors at the most, if that.
I remember when 1 Victoria was going up, every couple months the cranes height would go up with no obviously equipment doing the work. It's usually done one mast at a time (which is about one floor).
There a couple reasons for that: 1) the crane operator needs to be able to see clearly where they are putting stuff and 300 or 400 feet off of the ground would make the more difficult. 2) cranes generally don't have much in the way steadying themselves, so 80 feet up and not attached to anything is OK, while 350 feet could present a problem.
I'm sure there are other reasons.