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Originally posted by CaptainObvious
reply to post by dionysius9
Neat drawing... the towers did NOT collapse at free fall speed. This has been determined by both sides for years now.
Originally posted by Haroki
So it's impossible for the entire "top" of the tower to collapse together?
There's also tons of complete videos that show this, so you can take your pick of those also.
Review these and get back to me
And regarding Greenings paper, you keep moving the goalposts there. First you asked for something with some enrgy calcs, etc. Now you say it doesn't include "geometry" in it's calcs AND insinuate that he's working backwards from the collapse time
In fact, he gives 3 sources for his calcs
explains their possible shortcomings
Cuz when you start talking about "geometry" and "the impossibility of the top section of floors falling as a unit". and then be shown wrong about the whole "top section" thing with clear video evidence, it's very telling.....
Originally posted by bsbray11
(And NOT working from collapse observations, the system you are trying to INDEPENDENTLY EXPLAIN!)
The building totalled 32 storeys, with 29 floors above ground and three below. A concrete core and concrete frame supported the first 16 floors. Above that was a central support system of concrete columns, supporting concrete floors with steel perimeter columns. An additional feature was the presence of two 'technical floors' - concrete floors designed to give the building more strength. One was just above the ground level and the other at the 17th floor.
The steel columns above the 17th floor suffered complete collapse, partially coming to rest on the upper technical floor.
An investigation is underway between Spanish technical agency Intemac and UK authorities including Arup Fire, the University of Edinburgh and the concrete industry including Cembureau, BCA and The Concrete Centre. Preliminary findings suggest that a combination of the upper technical floor and the excellent passive fire resistance of the tower's concrete columns and core prevented total building collapse
The fire is significant in terms of its potential similarities between the collapse of the building's steel frame above the 17th floor and the experience seen at the World Trade Center. Notably, one of the recommendations of NIST's interim report on the World Trade Center disaster is for tall building design to incorporate 'strong points' within the frame.
Dr. Pal Chana of the British Cement Association demonstrated the relative likelihood of floor collapse in a steel versus concrete framed building, using the vivid example of the Madrid Windsor Tower fire which raged over 26 hours on 14-15 February 2005. This former landmark office block of 30 storeys featured a concrete core throughout, but with concrete columns up to the 21st floor and steel columns between the 22nd and 30th floors. Remarkably, despite the intensity and duration of the fire, the concrete floors and columns remained intact however, the steel supported floors above the 21st floor collapsed, leaving the concrete core in-situ and exposed.
Originally posted by Haroki
Hey, lookie here, we've got a CTer admitting that the towers didn't actually fall in 8 or 10 seconds. Is it clear now that you've been misled about that?.......
........ Just think - how much more have you been misled about? Your seismic argument is inconclusive at best, and in reality.... garbage.
Originally posted by Haroki
So it's impossible for the entire "top" of the tower to collapse together?........ Go here : drjudywood.com...
Cuz when you start talking about "geometry" and "the impossibility of the top section of floors falling as a unit". and then be shown wrong about the whole "top section" thing with clear video evidence, it's very telling.....
Originally posted by Haroki
Hey, lookie here, we've got a CTer admitting that the towers didn't actually fall in 8 or 10 seconds. Is it clear now that you've been misled about that?.......
........ Just think - how much more have you been misled about? Your seismic argument is inconclusive at best, and in reality.... garbage.
Originally posted by CaptainObvious
Griff! About time you chimed in here. Did you get a chance to listen to the debate? I'm interested in your thoughts on it.