we have a project starting that will require a stack built 1km high in the air?How will they install this?
Build form the top, when they build these huge cranes, they build the top section, lift that up and build the next section underneath it, set it down to release the lift off the top section and lower it to the second section. Lift those 2 sections from the bottom, build the third section underneath it, and so on. You need to lift securely, like on all 4 sides for stability, and that leaves the corners free to build the next section.
use a heavy lift helicopter, these are especially designed for this work
