It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Thank you.
Some features of ATS will be disabled while you continue to use an ad-blocker.
Originally posted by Valhall
3. If one single floor referenced in number 1, and affected by number 2, had collapsed (which calculations show would have happened) you would have (depending on which tower between WTC1 and WTC2) between a 10 to 30 story building dropping through approximately 12 feet as that floor collapsed.
Now - here's where I tend to lose my patience and leave it to Howard. If you are so deft to believe that a 30 story building could fall 12 feet, hit another damaged and weakened floor that is designed to carry a static load that its support members are already exceeding, and think that the dynamic loading of that 30 story building impacting wouldn't cause a progressive failure....
I leave you to your servitude.
Because it appears you are enslaved to your own obsession; your own dogma, and will not listen to reason.
Originally posted by Valhall
Okay, let me be real clear, since I don't have the patience to stick with arguing like Howard does, that running the numbers myself, analyzing the damage photos myself, and using my own educated brain - without knowing what NIST claims - this is what this engineer believes:
1. there was enough substantial damage (completely missing support members) to the outer support structure of WTC1 and WTC2 to immediately cause a situation where the remaining intact support structures were reaching their capacity for the floors affected;
In simple terms, the above means that structural components and assemblies must be able to bear, without any visible damage for one whole week:
1. their own weight, plus
2. 150% of the maximum possible weight from people & furniture in the building and wind, plus
3. 150% of the weight of the building above that it is designed to support.
They must be able to bear without collapse or failure for one week:
1.their own weight, plus
2. 50% of their own weight again, plus
3. 250% of the maximum possible weight from people & furniture in the building and wind, plus
4. 250% of the weight of the building above that it is designed to support.
Buildings are designed this way specifically to avoid them collapsing in case of fire, damage, or stress and 'creep'. Buildings can sustain massive, massive damage without collapsing entirely.
2. the heat generated by the burning fuel was sufficient to weaken the remaining steel support structures,
I did my own analysis on this that has been posted in a couple of threads now. It depends on no agency's data, and is extremely conservative toward avoiding failure. This weakening due to heat would have been affecting the remaining support structures which had already taken on added loading due to the missing support structures referenced in number 1;
3. If one single floor referenced in number 1, and affected by number 2, had collapsed (which calculations show would have happened) you would have (depending on which tower between WTC1 and WTC2) between a 10 to 30 story building dropping through approximately 12 feet as that floor collapsed.
Now - here's where I tend to lose my patience and leave it to Howard. If you are so deft to believe that a 30 story building could fall 12 feet,
hit another damaged and weakened floor
that is designed to carry a static load that its support members are already exceeding,
and think that the dynamic loading of that 30 story building impacting wouldn't cause a progressive failure....
I leave you to your servitude.
Because it appears you are enslaved to your own obsession; your own dogma, and will not listen to reason.
Originally posted by Valhall
Well, first off, billybob, wouldn't it make sense that the portion of the floor under question to give first would be the most damaged? And wouldn't it make sense that the floor below it would be most damaged in the same area?
Have you? Because WTC 7 had major damage from debris from both the jet impacts as well as the collapses of WTC1 and 2
Originally posted by Valhall
Well, first off, billybob, wouldn't it make sense that the portion of the floor under question to give first would be the most damaged? And wouldn't it make sense that the floor below it would be most damaged in the same area?
Concerning WTC7 - i haven't looked into 7 much. But I have listened to the 911 tapes of the first reponders.
Have you? Because WTC 7 had major damage from debris from both the jet impacts as well as the collapses of WTC1 and 2...that's recorded in the words of the firemen trying to evacuate the occupants (not long after the initial impacts), real-time, on that day. And it was so severely damaged it tooks hours for them to get everybody out of that building.
I don't ever see any one arguing for some demolition-type collapse mentioning those tapes. I just see the twisting of what "pull it" means.
Originally posted by Lumos
And I was waiting for it to bury itself all the way down...
Originally posted by bsbray11
Nonetheless, expect a lot of people to call foul. To hell with the physics. The building was concrete! Nevermind that it likely wasn't even near as strong as the WTC.
AgentSmith
The video [...] is not really a comparison in any way
The [sic] is more than a slight difference between a building impacting the ground and the top of a building collapsing on the rest of it below. I can't believe someone of your caliber would even make such a comparison.
Originally posted by Lumos
Building accelerates by falling 2-3 floors, upon impact the accumulated momentum is basically reflected upon it, yet it doesn't crumble nor significantly deform. Period. Again, tell me how that is no valid comparison when it's even a favorable comparison for apologists.
Originally posted by AgentSmith
But surely the effective weight (or whatever the term is) of the cap caused by it's velocity would amplify it greatly?
Has anyone done the calculation to work out what it would actually equate to?
I look at it like the comparison between hanging a weight on a wire, and then lifting the weight slightly and letting it drop - snapping the wire. Is it not fundamentally the same principle?
Originally posted by HowardRoark
Dude, the Dakota building isn’t even a real building, it’s a reinforced concrete structure that was built as a feed mill. Those things were built like missile silos. (and probably by the same guys ).
There is simply no comparison between the structures.
Originally posted by HowardRoark
Dude, the Dakota building isn’t even a real building, it’s a reinforced concrete structure that was built as a feed mill. Those things were built like missile silos. (and probably by the same guys ).
There is simply no comparison between the structures.
Originally posted by bsbray11
Nonetheless, expect people to call foul. To hell with the physics. The building was concrete! Nevermind that it likely wasn't even near as strong as the WTC.
Originally posted by Lumos
Effective weight? you can experience factored weight upon acceleration, but assigning something similar to an object in motion is absurd. An object in motion has momentum and kinetic energy, no "effective weight". You can calculate the force it would deliver on impact, which depends on the actual deceleration going on, by Newton's second law of motion f=ma. I think it's gross that someone not knowing principles this fundamental would think he has it all figured out concerning 9/11. I know that might sound rude, but it's grotesque in all honesty.
Originally posted by bsbray11
Nevermind that it likely wasn't even near as strong as the WTC.