(This is my first “real” post, so please go easy on me )
The AE911 folks are promoting another kind of numerical calculation of the collapse that centers around what they call the “crush-down” equation, which is a one-dimensional ordinary differential equation (ODE) that models a progressive floor collapse. They come in different varieties, of which the one by Ansgar Schneider [1a, 1b] is the one I have been looking more closely at (because a 9/11-truther at another forum was touting it ... Read even more
