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Help Understanding the planned Destructions of the World Trade Center Twin Towers and Debunking the Conspiracy Theory of Prof. Bazant. It is quite simple! A Structure cannot be one-way crushed-down from above by a small Piece of itself driven by Gravity
Björkman claims that no planes hit the Twin Towers or the Pentagon or crashed near Shanksville, which makes him a rarity even among the most delusional "truthers": a quadruple no-planer.
Björkman claims that all evidence of the aircraft impacts is fake and all witness accounts are invalid. And again. And again. And again. And again. And again. And again. And again.
Björkman claims that if 30 stories of one of the Twin Towers was dropped on the lower 80 stories from a height of two miles, it would bounce off without damaging the lower portion. And again.
Björkman says a Tower wouldn't be destroyed if a 60-million-pound block of ice was dropped on it, then denies making that claim.
Björkman claims that all photo and video evidence showing severe fires and structural failure in the WTC buildings is fake. And again. And again. And again. And again. And again.
Björkman claims that WTC 7 was demolished by a vacuum.
Björkman believes that the authors of the NIST WTC reports don't exist.
Björkman believes that steel structures are indestructible, even by nuclear weapons. And again. And again.
However, Björkman also believes that 16,500-22,000 lbs of high explosives may have been used to demolish each Twin Tower...with no detectable detonations.
Björkman is an engineer who believes that weight = mass. No, really.
Björkman believes his house would survive an asteroid impact.
Björkman again attempts to revise the laws of physics.
Björkman says a bathroom scale will register the same weight whether you stand on it or jump on it.
Björkman says the Twin Tower fires were "minor office fires."
Björkman makes the egregiously false claim that the FDNY said it could handle the fires in the Towers.
Björkman believes that columns become stronger when their supports are removed.
Björkman believes that the structures of the Twin Towers were comparable to cheese, pizza boxes, match boxes, rubber balls, sponges, a bicycle running into a wall, a child jumping on a bed, a tower of sushi, and a tower of lemons.
This article describes in layman's terms and using common sense (!) the structure of the World Trade Center Twin Towers and what happens when the alleged release of potential energy, due to downward, alleged free fall* (!) movement and alleged impact (!) of the mass above - a small top part lightweight structure (part C) - by its supporting columns when buckling, exceeds the strain energy that can be absorbed by the same columns and much bigger structure below (part A). These are the official, identical cause and effect of both destructions. The conclusion is that the official conclusions by US authorities are false! A steel composite steel structure like the WTC towers cannot crush down one-way from top down, when a small piece of the structure - upper part C - drops on the structure - intact part A from above! One reason is that the bottom part A of WTC1 is 10 times stronger than the top part C. Another reason is that gravity provides too little energy to destroy the structure. Quite basic! The USA is fooling the world.
I am sorry but you fail on the very first point. This has been long debunked; the diagonal cuts to upright steel were made during the clean-up :-
Both of the Twin Tower collapses exhibited remarkable symmetry. The North Tower's collapse commenced suddenly. The top of the tower seemed to effortlessly telescope down into the intact portion of the building. The collapse remained symmetrical from start to finish. The South Tower's collapse behavior was more complex. Its top first tipped for about two seconds, then started to descend. Despite the initial asymmetry of the collapse, it became more and more symmetric after the top started to fall. Once the top disappeared into the enormous dust cloud, there was no further evidence that the top had started to topple, except for a leaning anvil-shaped cloud of darker dust.
The centered collapses meant the falling mass [color=gold]followed the path of maximum resistance. That's the opposite of how we expect a structure to behave when it falls apart in any kind of natural process. Even if the towers were made out of clay, we wouldn't expect them to collapse in such a dead-centered fashion. It's all the more incredible that a steel structure would shred itself by falling into itself instead of falling over.
There are many examples of steel-framed buildings undergoing unintentional collapses as a result of [color=gold]severe earthquakes. In contrast to the destruction of the Twin Towers, no such collapses have been vertical or total -- let alone explosive. Rather, steel-framed buildings destroyed by earthquakes have toppled.
Speed of Fall
The Towers' Tops Fell Virtually Unimpeded
The roofline of WTC1 (The North Tower) begins dropping with sudden onset and accelerates uniformly downward at about 64% of the acceleration of gravity (g) until it disappears into the dust. This means it is meeting resistance equal to about 36% of its weight. The implication of this, however, is that the force it is exerting on the lower section of the building is also only 36% of the weight of the falling section. This is much less than the force it would exert if it were at rest. The acceleration data thus prove that the falling top section of the building cannot be responsible for the destruction of the lower section of the building.
Originally posted by OptimistPrime
reply to post by Alfie1
Simple-minded people need simple-minded demonstrations, after logic and science fail. Trusters act like children, so maybe the next step is for Richard Gage to dress up like Elmo and have guest musicians sing a song to try to get them to learn. Maybe some candy would help as well.
I want to know why is is so important to try to get people to believe the OS...Is it because the OS and the backers of the OS are saints....Is it because people are blinded by the Media propaganda...Is it cause they are fearful of truth...that the countr may crumble because the real perpetrators get exposed.