|diagram Gunel and Ilgin|
If you made a core of of one single piece of wood, it would be completely solid with no elasticity, and would topple over. We have to make a core that resembles a backbone of vertebrae, that can sway and bend. We have to post-tension it, because if needs to behave elastically and not just bend and stay bent. The building has to be firmly fixed to a baseboard, to simulate a strong foundation.
We are going to try using bungee cord for the facade to make it behave elastically. Although it is tempting to make a facade out of clear plastic, imagine how solid that would be if translated to full scale - the only thing that may resemble the behaviour of glass in a real tower is the thinnest cling-film. Many of the structures are being bolted (so that they flex). The bolts must not be too tight or the structure is too stiff to behave elastically. If they are too loose, it is slack and deforms plastically. So we are using spring washers, self locking bolts and may have to use some of the bungee cord as bracing to restore the shape.
All interesting explorations!! (More pictures will follow)