http://videos.howstuffworks.com/discovery/35615-extreme-engineering-concrete-pumping-on-turning-torso-video.htm

http://www.alimakhek.com/opencms/global/industries/construction/pdf/1242_Turning_Torso-LR090317.pdf

also check out the links below the video for more clips on the building process

something a little different reguarding this building... cool tho

http://www.youtube.com/watch?v=gUXjEd83mwI

http://videos.howstuffworks.com/discovery/35637-extreme-engineering-turning-torso-circular-hallway-video.htm

Nice Slump!  Dont realy care for the rubber hose below that much vertical system though!?

i thought that till i watch'd again. It's the rubber that connect's the boom to the slab for a little flexibillaty