Bags/Cornhole - New Incredible Technologies game field test video

JREF poster GlennB provides us this critique

 

"Responding to an article at
http://worldtradecentertruth.com/art...ansferRoss.pdf
(an article emanating from one branch or other of SfT) concerning the physics of a single storey collapse at WTC1 or 2, it was mentioned that :

His analysis is based on some very strange premises indeed :

"Analysis:
The falling upper section with a velocity of no more than 8.5 metres per second at impact would meet resistance from the impacted columns and have as its first task the necessity to load these columns through their elastic range and thereafter through the plastic shortening phase. We shall firstly examine this incremental time period...."

(my bolding)

In other words he's assuming the lower columns are being "impacted" as if the first floor to be hit was covered in a massive steel plate which would distribute the falling load evenly across the (still intact, pristine) lower columns.

There is no real-life scenario where this approach to the calculations is even remotely justified.

There followed a discussion where it was pointed out that the ends of severed core columns would not meet "dead square" and lead to a "bounce" (trust me - see the original essay - the word is used) . In the debate it was suggested that columns in both sections would be impacting with floor trusses, horizontal beams would be hitting each other etc etc. In other words, a 'chaotic' collision that is totally ignored by the "learned" original analysis.

Having read the essay a few times following that, it can only be described as "a big steaming, festering, maggot-ridden pile of poo". "

http://www.wired.com/news/technology/1,72482-0.html
also http://www.randi.org/jr/2007-01/011207challenge.html#i3