18-05-2011, 02:45 AM
Mr. Lewis,
Apparently I am not making myself clear. The collapse I describe is what I term Phase II - post initiation and AFTER the 4 seconds of the collapse of the top 14 floors in tower one, for example.
It is a collapse of the (as Fetzer likes to call it) stone cold structure - floors if you will which were at room temperature.
The floor collapse as describe by ROOSD does not require ANY HEAT or WEAKENED steel columns... it is simply the over loading by MASS assaulting the floors. I don't have to strike a pane of glass with a uniform impact to shatter the entire glass.
The assault of ROOSD was an avalanche of debris from above. Uniform? What do you think the mass distribution would be for each square foot of the material above the 96th floor? If you plotted it.. first you would have to consider 14 floors which each weighed about 120 pounds on each square foot. The would have to guess at the super imposed live load distribution... The window offices would have the big desks eh? But the filing cabinets would be in the darker windowless areas close to the core. But the actual percentage of super imposed live loads to the dead loads of those 14 floors is less than half. Each floor was designed for 58# superimposed live load but the floors are rarely loaded to that amount... floor space is left open to allow people to move about. How much does the contents of your office weigh and how many SQ ft is it and you can see it's probably way less than the 58#/s ft... so the live load is not really going to cause spikes in the load distribution.
Apparently I am not making myself clear. The collapse I describe is what I term Phase II - post initiation and AFTER the 4 seconds of the collapse of the top 14 floors in tower one, for example.
It is a collapse of the (as Fetzer likes to call it) stone cold structure - floors if you will which were at room temperature.
The floor collapse as describe by ROOSD does not require ANY HEAT or WEAKENED steel columns... it is simply the over loading by MASS assaulting the floors. I don't have to strike a pane of glass with a uniform impact to shatter the entire glass.
The assault of ROOSD was an avalanche of debris from above. Uniform? What do you think the mass distribution would be for each square foot of the material above the 96th floor? If you plotted it.. first you would have to consider 14 floors which each weighed about 120 pounds on each square foot. The would have to guess at the super imposed live load distribution... The window offices would have the big desks eh? But the filing cabinets would be in the darker windowless areas close to the core. But the actual percentage of super imposed live loads to the dead loads of those 14 floors is less than half. Each floor was designed for 58# superimposed live load but the floors are rarely loaded to that amount... floor space is left open to allow people to move about. How much does the contents of your office weigh and how many SQ ft is it and you can see it's probably way less than the 58#/s ft... so the live load is not really going to cause spikes in the load distribution.