david benson

Here is an interesting discussion about gravity driven collapse based on a demolition using essentially only gravity. What I find interesting, is that the video analyses clearly show a short free-fall followed by an impact causing reduced acceleration to be observed. This is the "missing jolt"...

What Did and Did not Cause Collapse of WTC Twin Towers in New York I have read subject article by Bazant, Le, Greening and Benson (BLGB below) in Journal of Engineering Mechanics, ASCE, Vol. 134 (2008), with great interest and would like to make the following observations: There is no need to...