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originally posted by: MrBig2430
No, they weren't, although that's a common misconception.
There are indeed press releases during the building that say the buildings were designed to survive plane impacts, and after the '93 bombing DeMartini also says this. the truth is that chief engineer Leslie Robertson has stated that it would of been next to impossible to do that using a slide rule, and common sense says that it would of been unnecessarily expensive, to the point that they never would of been built.
The truth is, that they were designed without plane strikes in mind. But during the early construction phase, there was public concern raised about this issue and so the designers did a study, limited to see if the buildings would topple or not as a result of the plane strikes, and it was found that they wouldn't.
So to boil it all down, they were most definitely not specifically designed to survive plane impacts. The press releases of the time were nothing but a lie.
originally posted by: MrBig2430
Which dynamic loads?
The dynamic load imparted by the plane impacts? Yes, this study was done.
Or the dynamic loads of a collapse? No, there is no reason to do this. Design concentrates on preventing collapse by building load transfer pathways and using active and passive fire protection on the steel.
www.nist.gov...
The vertical capacity of the connections supporting an intact floor below the level of collapse was adequate to carry the load of 11 additional floors if the load was applied gradually and 6 additional floors if the load was applied suddenly (as was the case). Since the number of floors above the approximate floor of collapse initiation exceeded six in each WTC tower (12 floors in WTC 1 and 29 floors in WTC 2), the floors below the level of collapse initiation were unable to resist the suddenly applied gravitational load from the upper floors of the buildings.
www.nist.gov...
From video evidence, significant portions of the cores of both buildings (roughly 60 stories of WTC 1 and 40 stories of WTC 2) are known to have stood 15 to 25 seconds after collapse initiation before they, too, began to collapse. Neither the duration of the seismic records nor video evidence (due to obstruction of view caused by debris clouds) are reliable indicators of the total time it took for each building to collapse completely.
www.abovetopsecret.com...
The only evidence needed are Manhattan streets washed in a foot deep blanket of 'dust', micro-sized particles from pulverized buildings...
This is only possible by applying enormous energy against the structures.
And who would have had the capability for this....hmm
originally posted by: turbonium1
originally posted by: MrBig2430
No, they weren't, although that's a common misconception.
There are indeed press releases during the building that say the buildings were designed to survive plane impacts, and after the '93 bombing DeMartini also says this. the truth is that chief engineer Leslie Robertson has stated that it would of been next to impossible to do that using a slide rule, and common sense says that it would of been unnecessarily expensive, to the point that they never would of been built.
The truth is, that they were designed without plane strikes in mind. But during the early construction phase, there was public concern raised about this issue and so the designers did a study, limited to see if the buildings would topple or not as a result of the plane strikes, and it was found that they wouldn't.
So to boil it all down, they were most definitely not specifically designed to survive plane impacts. The press releases of the time were nothing but a lie.
As to the "lie" of designing the towers for plane impacts, where do you get that idea? Leslie Robertson?
The same Leslie Robertson who said, after 9/11, that the towers were designed to withstand plane impacts, only when flying at 'slow-speeds'?
You believe someone who can't even keep his story straight as a reliable source on a "lie"?
originally posted by: MrBig2430
Which dynamic loads?
The dynamic load imparted by the plane impacts? Yes, this study was done.
Or the dynamic loads of a collapse? No, there is no reason to do this. Design concentrates on preventing collapse by building load transfer pathways and using active and passive fire protection on the steel.
The dynamic loads are designed into the structures to prevent collapse in EXACTLY the same scenarios, as 9/11. Indeed, they were designed to withstand FAR WORSE scenarios than that.
You act like the towers were sliced in two, completely separate pieces,
and the top chunk plops down onto the lower piece, all at once,
smashing everything below it into smithereens, like a massive pile-driver!! [/]
pretty much
[quoteThat's nonsense.
There is no 'Heaviest Mass Ever Dropped Law' in physics, which replaces all other Laws, so completely random structural damage results in a uniform, symmetrical collapse!
originally posted by: Salander
So now the thoughts and comments of Leslie Robertson mean nothing regarding the design of the towers? Oh vey, how desperate one must be to believe the official story.
Research shows that the towers were never "specifically designed to survive plane impacts." - your words.
originally posted by: firerescue
a reply to: MrBig2430
Research shows that the towers were never "specifically designed to survive plane impacts." - your words.
While not "specifically designed" to resist an aircraft impact, the engineers did consider what would happen
if a plane (Boeing 707 - one of the largest and most common aircraft in service) did hit
Calculated that to topple the buildings over would require lateral force of 17 million foot pounds, aircraft impact
would generate force of some 13 million foot pounds. Ergo the building would survive
Left unsaid was what would happen if calculations showed building would fall after aircraft impact .....
originally posted by: Salander
So now the thoughts and comments of Leslie Robertson mean nothing regarding the design of the towers? Oh vey, how desperate one must be to believe the official story.
originally posted by: MrBig2430
originally posted by: Salander
So now the thoughts and comments of Leslie Robertson mean nothing regarding the design of the towers? Oh vey, how desperate one must be to believe the official story.
You have no clue if you think they were specifically designed to survive plane impacts.
But, here's a test:
If you believe that he's truthful, then he's also right when he says the buildings collapsed due to the impacts and fire, right?
Or is he NOW lying?
Can't have it both ways.
Which is it gonna be?
originally posted by: Salander
originally posted by: MrBig2430
originally posted by: Salander
So now the thoughts and comments of Leslie Robertson mean nothing regarding the design of the towers? Oh vey, how desperate one must be to believe the official story.
You have no clue if you think they were specifically designed to survive plane impacts.
But, here's a test:
If you believe that he's truthful, then he's also right when he says the buildings collapsed due to the impacts and fire, right?
Or is he NOW lying?
Can't have it both ways.
Which is it gonna be?
Kevin Ryan did NOT do it. He spoke truth to power about the absurdity of the claims at WTC, would not take it back, and was eventually fired for his whistleblowing and truth telling.
originally posted by: Salander
originally posted by: MrBig2430
originally posted by: Salander
So now the thoughts and comments of Leslie Robertson mean nothing regarding the design of the towers? Oh vey, how desperate one must be to believe the official story.
You have no clue if you think they were specifically designed to survive plane impacts.
But, here's a test:
If you believe that he's truthful, then he's also right when he says the buildings collapsed due to the impacts and fire, right?
Or is he NOW lying?
Can't have it both ways.
Which is it gonna be?
Leslie Robertson told the truth early on--that the towers had been designed and constructed to withstand being struck by an airliner, which they actually did for an hour or more.
Whatever he might have said later does not really matter much. .