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Originally posted by Fluffaluffagous
Originally posted by psikeyhackr
My Python program demonstrates the minimum collapse time
No it doesn't.
It assumes a set of conditions that did not in fact happen.
Therefore, it is garbage..
Originally posted by psikeyhackr
Make sure you explain it. Mine does use the conservation of momentum.
psik
Originally posted by wmd_2008
reply to post by psikeyhackr
Are you still going on about your model which is not a model of what actually happened.
Care to comment on this below ARE you like ANOK still not willing to catch the weight!!!!
www.burtonsys.com...
I wonder why!!!!
Originally posted by ANOK
The biggest fail though is if it was simply pancaking floors adding mass, there would have been a stack of floors in the footprint. You can't have it both ways, if there were no stack of floors they were obvioulsy removed during the collapse, which means there was no mass to increase.
Originally posted by ANOK
reply to post by wmd_2008
Dave whatisname seems to forget about equal opposite reaction. He seems to forget the fact that all the force of the dynamic loading is still felt equally by both colliding floors. He seems to not realise that the force of all the falling floors would effect more than just the one impacted floor, an equal amount of force would be absorbed by both impacting floors. He also ignored the loss of Ke to deformation, sound, heat etc.
The biggest fail though is if it was simply pancaking floors adding mass, there would have been a stack of floors in the footprint. You can't have it both ways, if there were no stack of floors they were obvioulsy removed during the collapse, which means there was no mass to increase.
Dave also didn't study the collapses very well, you can see the top section is collapsing bottom up before the bottom section even moves...
Originally posted by wmd_2008
reply to post by psikeyhackr
I thought you claimed your model didn't represent the floors or have you changed your mind
I am in the process of making a reply to ANOK's BS which I will post later maybe if you did some time actually on a multi storey building this wouldn't be such a mystery to you armchair builders. Of out now to work guess whereedit on 21-6-2012 by wmd_2008 because: (no reason given)
Originally posted by waypastvne
Can you show us a picture of this empty hole ?
Originally posted by wmd_2008
I am in the process of making a reply to ANOK's BS...
Originally posted by ANOK
I back up everything I say with real world physics, all you can provide is papers directly related to covering up the real reason the buildings collapsed.
Floors pancaking would not have the energy to both break connections, and cause all the steel floor pans and concrete to simply turn into rubble. There would have been a stack of floors, not a pile of rubble of few feet high.
Can you demonstrate sagging trusses putting a pulling force on the columns?
Heat caused steel in the floor trusses to expand, promoting buckling in columns, at the same time that the heat softened the steel and the aircraft debris contributed to gravity loads, leading to progressive collapse.
The third event was a progressive collapse: "As the large mass of the collapsing floors above accelerated and impacted on the floors below, it caused an immediate progressive series of floor failures, punching each in turn onto the floor below, accelerating as the sequence progressed. Freestanding exterior walls... buckled at the bolted column splice connections and also collapsed."
After the initial impacts, the most heavily loaded columns were probably near, but not over, their ultimate capacities. The structure successfully redistributed the building weight to the remaining elements and maintained stability long enough for a life-saving evacuation.
Shear strength in engineering is a term used to describe the strength of a material or component against the type of yield or structural failure where the material or component fails in shear. A shear load is a force that tends to produce a sliding failure on a material along a plane that is parallel to the direction of the force. When a paper is cut with scissors, the paper fails in shear.
Originally posted by liejunkie01
reply to post by ANOK
Can you demonstrate sagging trusses putting a pulling force on the columns?