ozeco41
Philosopher
I'm not confused and neither are the others.
Connections would fail long before a 90° flex could happen allowing these "knees" to meet. Connection failure would be asymmetric and unpredictable. No knees meeting in axial impact.
Whatever the actual failure mode - forming knees or failing before knees form or any other.... (including - believe it or not - cut by aircraft OR cut by CD neither of which change reality but let's not go there.......YET!
)The ends of the individual column pass each other as the Top Block moves downwards shortening the gap that the column previously occupied and therefore requiring that the column be shorter or broken or folded or however it gets its ends closer together to remain in the shorter gap. (Pause for breath....
