You might enjoy this link ... though it's probably trivial to you if you're a structural guy. LOL.
Simulated Structural Collapses
What's interesting about this is that these stacked block structures would tend to be more likely to retain their shape while collapsing than a typical building would -- since they all see to be constructed uniformly without any consideration for open space in the interior. And yet they all seem to have minimal tendencies to topple, as opposed to collapsing downward.
The segment that starts around the 4:00 mark is a good example, because it looks like the whole right side is going to maintain its form and topple straight to the right. But it fails to maintain its form, in a manner consistent with all the other similar scenarios in the video: the bottom of the structure separates from the top because the top can't maintain the same rotational speed.
Fascinating!
This is nonsense.
Arguably, give me the choice, the safest building for any potentiality is a reinforced concrete building. But, it does not lend itself to high rise construction (generally) or renovation.
I can upgrade a steel building easily, welding more steel, not so much with a reinforced concrete building.