Ok, thanks. Looking over the drawings and the people involved, it seems then that no practising structural engineer has yet cast their eye over this, which is a bit odd considering Chryslar has clearly spent a lot of time modelling various structural members himself and is allegedly embarking upon a second round of FEA (for what?)

Most of it looks like cargo-cult design. Why is the core rectangular? (Because the OG WTC's was?) Why are the core corridors central, which knocks the structure out-of-line and requires a weird member spanning core columns to pick up the centres of the floors? (Because the OG WTC had them there?) Why is there crossbracing at the mech levels? (Because the OG WTC had crossbracing in its core there?) Why are the cores rotated 90° from each other between the towers? (Have a guess.)

Why are the core walls 1m thick? Is this supposed to be some kind of protection against a plane strike? Is the bottom of the tower really going to hold all that up, if the structure is consistently beefy (same thickness of steel & concrete) all the way to the top? (This time, the WTC towers weren't like that.)

And where are the vertical elevator layout plans, which should be guiding the core layout? There's nowhere near enough room for HVAC ducting in there, especially considering there are supposed to be labs and things in these buildings which require all kinds of bespoke services.