To see evidence of the phenomena mentioned in this video, watch these videos 1) Inward dent in perimeter columns and immediate buckling - kzread.info/dash/bejne/h4CYy6Zvl7zAf5M.html & kzread.info/dash/bejne/Z4mhm5lqgaafZto.html 2) Shredding of perimeter columns - kzread.info/dash/bejne/nYt3pqNpabushJM.html 3) Central core staying strong till the last moment - kzread.info/dash/bejne/ZXyWpsGKZs7TmJs.html (2:06) & kzread.info/dash/bejne/hGxsm8eMpti5Xdo.html (2:03) 4) The superstrong foundation (sway of the building) - kzread.info/dash/bejne/g59psLOghZCfd5c.html Your support on Patreon is vital to my team. Please support us at - www.patreon.com/Lesics . I am still studying about the collapse of WTC7. Sorry for the delay in WTC7 video release. I hope I can release this video by mid December. Cheers Sabin

@ziad_jkhan

2 ай бұрын

Did you look into the study made by the university of Alaska to begin with?

@ziad_jkhan

2 ай бұрын

I'd suggest everyone to unsubscribe until he looks at the study made by the University of Alaska. It seems like the guy behind Lesics has become desperate for clicks.

I lost my 22 years old granddaughter. She was in there to interview for an internship. I've never been down there since rebuild. Thank you for sharing this.

@falafel1980

Ай бұрын

I’m so sorry to hear of your loss. I visited NY for the first time this summer and saw the WTC memorial. It was nice how they did it and of course has all the names of those who were lost. her memory will live on. Stay safe

@NickkaDUB

Ай бұрын

I’m sorry to hear of your loss. I hope there’s a real investigation because of people just like your granddaughter. This video is a lie and a slap in the face to her, you and all of us who really care about what happened that day. People need to hear the real truth before it’s lost in history and forever a lie.

@michaelmottlau5941

Ай бұрын

I'm so deeply sorry for your loss of your granddaughter. Kind regards from Copenhagen, Denmark.

@Kio_vidz

Ай бұрын

I hope the collapse of te towers didnt collapse your heart. R.I.P.

Sabin Matthew has a series of major errors in his thinking. The ablative foam thermal protective coating on the steel would have protected it much longer, as it did with tower 7, but the coating was hard and brittle, and most of it was shattered off of the steel in the impact zones by the force of the explosions. Tower 7 burned many times longer before collapsing. Sabin's worst error is the statement about the size of the airliners involved. At 10:50 in the video, it's said that the Boeing 707 is "half the size of the one that actually hit." This is blatantly false; the most common variants of each, 707-320B and 767-200ER, are very little different. To summarize the aircraft: The maximum takeoff weight for a Boeing 707-320B is 336,000 pounds. The maximum takeoff weight for a Boeing 767-200ER is 395,000 pounds. The wingspan of a Boeing 707 is 146 feet. The wingspan of a Boeing 767 is 156 feet. The length of a Boeing 707 is 153 feet. The length of a Boeing 767 is 159 feet. The Boeing 707 could carry 23,000 gallons of fuel. The Boeing 767 could carry 23,980 gallons of fuel. The cruise speed of a Boeing 707 is 607 mph = 890 ft/s, The cruise speed of a Boeing 767 is 530 mph = 777 ft/s. The REAL difference between the engineers' test and the incident was the engineers' assumption that the collision would be accidental; it wasn't. The test was for what they considered to be the most likely scenario; a 707 near the end of its flight, with most of its fuel used up and slowed down to landing approach speed (161 mph) in poor visibility. What happened was a 767 very near the start of a long flight, with nearly a maximum fuel load, flying in clear air and broad daylight, at full throttle top speed (558 mph); a worst case scenario that the engineers had no logical reason to consider.

@YouAreOneOfUs

21 күн бұрын

And building 7 was the cities command bunker. Reinforced to withstand direct attack. But some burning debris made it fall at free fall speeds. Oh and the air was safe to breath, nobody in Government would ever lie. All the first responders that died horrible deaths was just a coincidence, right? The FBI agent that warned about the pilots and them being escorted past their visa checks was in one of the buildings and died. Israel, on state tv interviewed people that claimed they were there and filmed it because then knew it would happen. Ignore the explosions that were going off and the witness testimony to that effect. The truth is out there but you straw man with your numbers.

@dr00andrew

21 күн бұрын

Also no one ever considers the speed limit of airplanes at that height. Airplanes flying at that height are not to exceed 250 mph. No one in their wildest dreams could have imagined a scenario like that could have happened. Simply put the physics of this crash were never taken into account, mainly because the planes hit at a speed limit that was over double what was legally allowed

@bobthegoat7090

21 күн бұрын

Maybe when they said half, they compared either the volume or cross-sectional area. However, you still make a great point. Nonetheless, I do appreciate the video, as I thought it explained the main engineering concepts fairly well.

@dikranovichk5889

21 күн бұрын

@realtechzero, according to your research, the 767 weighted 60,000 lbs more than the 707. That additional 60k lbs is roughly the weight of two F18s. I guess my question is, how much more force does that extra 60,000 lbs bring to bare on the impact of the building?

@Iugeer

20 күн бұрын

im not american, can you explain what you're implying? who did it??

a firefighter friend of mine lost his life while trying to rescue victims in one of the towers, May Jose A Guadalupe R.I.P. as well the rest of the people that perished on that day!

@vaughnmcintire4015

Ай бұрын

you can blame your own government - RIP

@BullToTheShit

Ай бұрын

@@vaughnmcintire4015 > *"you can blame your own government"* You mean for not identifing the terrorists before they committed the 9/11 terrorist attack?

@jwota6534

Ай бұрын

@@BullToTheShit I talked to civilian pilots - they all said that such a maneuver is very complicated - the probability that they would hit the center of the building with their plane - is very small. Everyone claims that the pilots were incredibly skilled - where did the terrorists train the pilots, and on what planes ?

Something none of these videos explain. The bottom of the tower has to be stronger because it holds up the whole tower. The fire was at the top and fire burns upward and yes it could have weakened the structure enough to collapse but it collapsed evenly and took out everything evenly all the way to the ground. In this video you explain how the connections of the floors to the outside Collums and how the outside buckled but never explained the center core giving way all the way to the ground. The closer to the ground the stronger it had to be and there was no fire at the bottom. The tower came down evenly all the way to the ground not once but both towers came down like this. Then there is building number seven that also collapsed the same way and it just caught fire from the other building. I watch these videos because I would like to understand but once again it fails to convince me.

@Matt-pt6rl

17 күн бұрын

Absolutely correct and logical . Prepare for the arguments from the same posters who’ve replied to every single post like yours . Thousands of replies from the same clowns won’t change what is.

@mooneyes2k478

17 күн бұрын

"but never explained the center core giving way all the way to the ground" The center core of the Towers wasn't able to stand on its own. The Towers were a unit, where all the elements needed each other. "it just caught fire from the other building" WTC 7 was, in the words of the FDNY, "fully involved in fire" for 7 hours. There's no "just" about any of that.

@Matt-pt6rl

17 күн бұрын

I must be Nostradamus!!

@YouTubeSucks12328

17 күн бұрын

@@joecioe8566 - OK, just remember - you asked. The collapse of the Twin Towers isn’t really that difficult to grasp and most of it you can see with simple visual observation. Unfortunately many people lose the plot getting lost in wrong _block dynamics_ mechanisms that have nothing to do with what actually happened, then waste years arguing about it. I’m doing it the right way, dealing with the actual mechanisms as observed. This is *my* explanation presented point by point that does not rely on any authority. It is the absolute shortest way I know to summarize it what actually happened. This will be a lot more detailed than the video above and without visual aids (although these can be provided on a case-by-case basis if you have specific questions) so you will have to use the minds eye. 1. The 47 steel core columns carry the majority of the gravity loads. The 236 steel perimeter columns carry the remainder and ALL of the lateral (wind) loads. Long-span lightweight floor trusses connect the core and perimeter column together with a hat truss on top to tie the structure together as an integrated unit where no element can survive without the others 2. Aircraft impact damages or destroys many perimeter and some core columns. Large multi-floor fires are started and able to spread rapidly with no effective fire fighting or fire suppression. This was observed and recorded. 3. Heat causes floor trusses to sag at the impact and fire damaged floors. This was observed and recorded. 4. Sagging floor trusses cause inward bowing of perimeter columns increasingly overloaded while simultaneously becoming weaker by up to 5 feet! This was again observed and recorded. 4a. Bent columns lose much of their ability to support a load. 5. Perimeter columns buckle and fail, initiating the collapse and turning the formerly static mass above them into a dynamic one 30 times greater. Again, this was observed and recorded. Columns above and columns below the failure point are no longer aligned. The load bearing structure below is not longer bearing any load. 6. Thousands of tons of debris _pour down the open office space within the four outer walls_ and the analogous spaces within the cores. This debris crashes onto the floors - which can not even begin to resist that - instantly breaking their bolted connections to the columns, one floor at a time. 6a. This debris *falls past the columns* not onto them, thus the columns can provide no resistance to the falling debris. Conspiracist models of collapse (eg; AE911T) all assume _columns crushing columns_ like a tree falling through itself. This did not occur and is why conspiracists can’t grasp the physics. Their models are wrong. 6b. The only structure resisting the collapse is the bolted connections of the floor trusses to the core and perimeter columns. A pair of 5/8” bolts at each end of each truss vs. thousands of tons of falling debris. 7. This collapse can _only_ go straight down. 8. Collapse progresses through the _floor systems_ and *not* down the columns. Rate of floor assembly failures increases with each successive floor as momentum increases, reaching an average acceleration of 0.65 of GA, or 35% slower than true free fall. Bang, bang, bang down the building until there are no more floors to fail. 8a. As the next floor is impacted, momentum is briefly slowed before accelerating in free fall again 12 feet to the next floor. Velocity and momentum are constantly increasing. 8b. With each floor failure the falling debris gains mass, momentum and energy as it descends to the next floor. The falling mass increases with every floor it destroys as new falling mass is added. Some falls to the sides, but most falls down. 8c. The above is unquestionably the _path of least resistance_ 9. As air is compressed inside the building (95% air by volume) it is forced down the tower and out the sides. This was observed and recorded. 10. Perimeter columns become detached and peel away (think banana) _behind_ the collapse front. This was observed and recorded, the results quite obvious from examination of the debris pile. 11. Core columns fail last as their internal beam bracing is stripped away and lateral support from the floor to perimeter columns is lost. This was observed and recorded. 12. The whole process took 31-34 seconds from the moment the perimeter columns buckled until the last core columns hit the pile. For those who care about such things that is 1/3 the rate of true free fall. 14. What was NOT observed and recorded were the 180-190 dB bangs of high explosives or the blinding bright flashes of thermite, neither of which could have caused the observed perimeter column buckling and neither of which could have survived the impacts and fires anyway. There is zero physical evidence to support either conjecture and both are pure fantasy, totally unsupported by evidence, logic, reason or simple observation. That is the quick-and-dirty collapse sequence in a nutshell, accurate no matter who planned and carried out the 9/11 attacks or why. Remember, the Twin Towers were an _integrated system_ in which no one element could survive without the others. Collapse started (initiated) in the perimeter columns and continued (progressed) through the path of least resistance - the floor systems - bypassing the columns which would have been the path of greatest resistance. Comments, questions and alternative hypothesis at least as rigorous are welcome, one point at a time please to prevent things going off the rails.

My father was the last air traffic controller to speak to the B-25 Mitchell bomber before it crashed into the Empire State building. Their orders were to divert from NYC's LaGuardia and land at New Jersey's Newark Metro Airport due to heavy fog. My father gave them their triangulated coordinates, then stated switch to Mitchell Field. He always thought like stripes they took the plane for one last hurahh. He thought that they just picked the wrong place to dive down and gun the engines. The pilot Col. Smith was my college math teachers colonel he dreaded flying that model bomber. As it was prone to rear rudder failure, which resulted in sudden altitude drops.

In unedited footage of the onset of the South Tower collapse (and in the animation used in this presentation) it can clearly be seen that the floors above the initial damage begin to fall off to the side. Is there some unknown construction technique that counters lateral fall of a collapsing structure? What, if any, explanation can you give for this happening? Also, please explain how it was possible that one side of the building could sustain such catastrophic damage (the destruction of well over 75% of it's structural support) and not allow for the upper floors to 'slide off' towards the missing support.

@brucelansberg5485

13 күн бұрын

_"Is there some unknown construction technique that counters lateral fall of a collapsing structure?"_ Well, I wouldn't call gravitational force "unknown". _"please explain how it was possible that one side of the building could sustain such catastrophic damage (the destruction of well over 75% of it's structural support) and not allow for the upper floors to 'slide off' towards the missing support."_ Research the working of the spandrel plates along the perimeter.

@YouTubeSucks12328

12 күн бұрын

You mean tilt? Video of Tilt in the South Tower. Note the gross column mis-alignment as the upper mass descends. kzread.info/dash/bejne/mJioz7ORga3Jfdo.html&ab_channel=achimspok Video of tilt on the North Tower kzread.info/dash/bejne/hWpqzpRxe9nLdto.html&ab_channel=AlienEntity1 You failed to notice that at the same time there is tilt (due to buckling failure of perimeter columns on one face of the Tower) there is also _drop_ . When the perimeter columns on one side failed in compression that caused those on the opposite side to be put into tension, which would quickly cause them to fail. Then the whole thing drops. In the battle between tilt and drop, drop won. There is no hinge point for tilt to continue. No lateral force that could push the top of the building off of the lower part of the building. No mechanism for sliding.

@YouTubeSucks12328

9 күн бұрын

@@lBadBoy1l - If you have a better answer for the OP rather than an ego stroking ad hom, I suggest you present it. Be useful and get the job done then move on instead of beatin your chest. But i think we both know _that_ won't be happening.

@tuck6464

3 күн бұрын

Nonsense. If the "tilt" had been caused by fatigue from damage, it wouldn't have needed any "hinge point, lateral force", to "push the top of the building off" It already had gravity and momentum working for it. If this had been a natural occurrence, from the damage, it would have just kept going, as opposed to canceling the existing lateral motion and just dropping straight down. Both forces would have remained relevant. When and if the perimeter "on one side failed in compression that caused those on the opposite side to be put into tension, which would quickly cause them to fail" ALSO NOT ACCURATE. You people like to forget/pretend that there was no substantial core in the building to prevent , the so called tension to the opposite side of the perimeter. This video is very well produced, but it is a looong way from a physics/physical explanation of what caused any of these buildings to come down the way they did.@@KZreadSucks12328 "The battle between "tilt"/lateral motion and drop/vertical motion" is nonsense. If anything, lateral motion would have been more prevalent, according to you're description.

Very informative. Any chance you could do a video that explains how WTC building 7 collapsed in the exact same way (despite not getting hit by a plane)?

@martoto77

Ай бұрын

Debris from the WTC1 and WTC2 collapses damaged the buildings around them, including WTC7, and started major fires which were left to burn for seven hours. The heat weakened internal core steel columns in one part of the building failed vertically. And then the now unsupported adjacent columns failed laterally. The debris from the steel frame collapsing pierced the now freestanding outer shell near the base and it finally collapsed.

@MasterMindInfinite

Ай бұрын

😂👏

@HVYMETL

Ай бұрын

ALL the columns in bldg 7 collapsed at the same time, not just the few which were hot from a fire. The columns which fireman were standing right next to just 5 minutes earlier were not surrounded by flames.

@Lafforcry

Ай бұрын

@@martoto77 LMAO🤣🤣🤣

I was unfortunate enough to have a front row seat in front of the Millennium Hotel when the second plane hit, just after evacuating my store in Building 5. I haven't run like I did when the collapse started since that day. The pic in my avatar is the roof of my building taken from the Woolworth Building by my mother-in-law about two weeks after the attack. Never imagined I would have such an experience.

@Fortaz107

24 күн бұрын

Did you see the holographic plane?

@wwiiinplastic4712

24 күн бұрын

@@Fortaz107 I saw the actual one. No sign of Jem's tour plane anywhere.

@Fortaz107

24 күн бұрын

@@wwiiinplastic4712 Did you also see the projector plane flying near it?

@sparrowhawk3216

23 күн бұрын

don't lie

@wwiiinplastic4712

23 күн бұрын

@@sparrowhawk3216 If you're talking to me I am not lying. Regardless, I don't care what you or the other clown think anyway.

Thank you for the video. It was really entertaining yet informative. I have a question though. If the floors were only loosly coupled to the main core then how is it possible that the whole core was destroyed and did not survive at all? The example with the coke can works only if you get the main core out. How is that possible?

@JP-kp9kh

Ай бұрын

Good question. The video does not explain the complete destruction of the core columns. Why? because it is not possible to explain the destruction of the core columns using the office fires hypothesis. Many who have examined the construction of those towers understand that the complete annihilation of the towers could only be the consequence of an outside force.

@TheMiddleClassholes

Ай бұрын

@@JP-kp9kh Funny because the cores of the buildings stood for a short while after the collapses.

@JP-kp9kh

Ай бұрын

@@TheMiddleClassholes Are you certain? I remember that the *outside* columns (not the *core* columns) stood up for a second right after the building collapse. But the point remains that there is no good explanation as to why the core columns vanished into thin air.

@TheMiddleClassholes

Ай бұрын

@@JP-kp9kh Yes, I'm certain the cores stood for a brief period after the collapses. Would you like video titles to see for yourself?

@YouTubeSucks12328

Ай бұрын

The Twin Towers were an integrated system of core columns supporting most of the gravity load, perimeter columns supporting the remainder of the gravity load and all of the lateral (wind) loads, long span floor trusses to tie those elements together and a hat truss to cap it off. No one element could survive without the others. That is the integrated system part. The same avalanche of loose debris which fell through the open office space progressively destroying the long span floor trusses was also falling through the floor systems of the core, stripping the beams out that supported the floors in that region in combination with the lost floor trusses and the critical lateral support they provide the core columns could not remain standing on their own.

I'm only 2 minutes in and this has already explained multiple things I wanted to know. I have always wondered how those kangaroo cranes lifted themselves up! Very cool. The construction of these buildings has always fascinated me. If this type of stuff interest you guys, you should look up videos of people building a "caisson" for bridges that go across water. Its sooo cool to me.

@Nationalist1896

15 күн бұрын

ONLY AFTER 22 YEARS.. You have to come up with this cover up.. The biildings were set up with controlled demolition.. WITH THIS LOGIC, EXPLAIN BUILDING 7.

@adambanks7341

15 күн бұрын

@@Nationalist1896 I'm more interested in the architecture than the conspiracies.

@dirkdiggler8260

14 күн бұрын

@@Nationalist1896 Some people prefer reality to fiction sorry mate. If you're going to persist with your lunacy though, please explain how a controlled demolition could possibly have brought both towers down at the impact zones where the planes hit, & then name ONE demolition expert who agrees with you the twin towers were demoed.

What's interesting about the Trade Towers and I had worked there back in the good old days when it was mostly a government office complex is that the poured concrete floors were very thin coming in at a thickness of only 4 and half inches.

@twinpole40

Күн бұрын

They do that when its steel reinforced. There comes a point when the thickness becomes a liability as the weight of the concrete over comes the strength of the steel

Unlike the Twin Towers, Building 7 was not hit by a plane. In fact, it was over 350 feet away from the closest of the Twin Towers, but at 5:20 pm that afternoon it spontaneously collapsed in near perfect symmetry and fell for over 100 feet at the free-fall speed of gravity. Why???

@YouTubeSucks12328

18 күн бұрын

Well, almost none of that was true. That you still in 2023 have to ask about that is easily one of the most studied engineering disasters in all of human history, the subject of at least 5 comprehensive engineering studies and scores of technical articles truly boggles the mind. If you really cared all the answers you seek are out there.

@harryman8378

20 сағат бұрын

💯💯💯

To my knowledge the spray foam mentioned was actually asbestos based and came in huge quantities, causing long lasting health risks to people close to the building after the collapse.

@Limit5482

2 ай бұрын

Most of the fire retardant spray on material is asbestos material. I’m not sure if it’s still in use today but it’s literally everywhere and not just spray foam insulation but loads of other materials as well.

@joshuabean9409

2 ай бұрын

Yup, they were told they had to update the buildings prior to 9/11. The cost was estimated at morethan the two towers' value. The owner made around 4 billion in insurance when they fell as well.

For the morbidly curious, there have been a lot of re-mastered and sharp videos surfacing. You can really see the sway of towers when they were hit (you must look very closely against some stable frame of reference in the video) and it's easy to see the buckling of the perimeter of the south tower in the final moments. As each floor collapses, starting a minute or so before the full progressive collapse, puffs of black smoke push out of each of those floors. And the sparks of the grinding columns increase. It's still real difficult watching the footage and I avoid it these days for the most part. I'm still freaked out by it (I had just returned from there when it happened). All those people just going to work.

@robertjenkins6132

Ай бұрын

Aren't videos of the collapse banned on YT? A few years ago Roman NFKRZ received a community strike for "terrorist content" because he had earlier included footage of the collapse as part of meme in an old video he made when he was a kid.

@robertjenkins6132

Ай бұрын

Or maybe it's only videos showing the planes striking which are banned - not the collapse itself.

@KronStaro

Ай бұрын

where did you see any buckling in the actual videos of the event? the towers were pulverized, i think your reality of physics seems a bit off.

Very interesting video, but its just more of the same, we already been told to believe...i liked the start of the video, where the construction itself was nicely explained, but when i saw the coke load test, as comparison to the wtc collapse, it got a bit ridicilous. That maybe would have been correct if the towers where standing upside down, but one thing wasnt mentioned in this video, the thickness of the supporting steal beams, as we all know the higher the floors the thinner und lighter the steal beams, meaning in terms of load capacity we can see the towers as an pyramid like structure. But then we see a collapse that pulverizes all those beams, getting thicker and stronger the lower it gets literally into dust, without any resistance at all! Well, i guess we will never find out the whole truth/story about that collapse, but there are a lot of wild theories out there...

@MarkH-cu9zi

Ай бұрын

_", i guess we will never find out the whole truth/story about that collapse"_ The collapse is already understood.

@wifix3822

24 күн бұрын

Let the sheep be sheep 😂

@VViatro

19 күн бұрын

It is like with every major historical events - it takes centuries to get a good perspective, gather all the facts and analyse it with cold blood. It won't happen during our lifetime.

@joetucker8582

18 күн бұрын

I agree with you and wish there would have been a legitimate investigation. Had there been one and if foul play was found it would have implicated a lot of very wealthy people and senior government officials. My opinion of those who believe the whole story as absolute fact is not thinking they are sheep or stupid but rather not being able to withstand that kind of betrayal. Kind of like listening to the families of serial killers and being shocked.

This study seems to provide a credible depiction of the events, notwithstanding the myriad theories proposed over time. It's important to note, though, that in assessing a fire's impact on a building, factors extend beyond just the initial fuel source, like jet fuel. The 'live load'--essentially the movable items within the building--plays a significant role in fueling the fire's intensity and temperature. Often, this aspect doesn't receive enough attention in engineering education and practice. In a standard office building, the live load includes various furniture items such as chairs, couches, and wooden tables, predominantly composed of fabrics and wood, not metal. Office environments also contain cubicles, an abundance of paper, and numerous plastic components found in printers, computers, and cabling systems. Plastics, in particular, are notable for their high energy content when burned, substantially increasing fire temperature. Further, the building's live load might encompass textiles like curtains and carpets, known for their quick ignition and intense burning. Even small amounts of chemicals or flammable liquids present in the building can significantly influence the fire's spread and severity. In industrial contexts, this live load may extend to raw materials, partially completed products, and waste materials, all of which can react unpredictably in a fire scenario. Properly understanding the nature and volume of these materials is vital for effective fire safety strategy and the design of fire suppression systems. The presence of these elements, adding to the fire's fuel, can markedly alter how a fire propagates and the difficulty in managing it. Just my input.

@davidfigueiro4301

18 күн бұрын

That's quite a word salad you had going on there... Ask yourself this question, How did 3 buildings Collapse at freefall speed Into their own footprint ultimately being completely destroyed When fuel source and delivery are inconsistent with each other? And before you respond please keep in mind that it has never happened in human history previous to that date. In layman's terms what I'm trying to say is falling debris doesn't fly into a building and it completely destroy a building! doesn't happen.

@kevinohara99

14 күн бұрын

you dont work in construction pal

@jackbailey524

11 күн бұрын

if you watched the video, it states it was a new design which put it to a disadvantage as all the support was centred in the middle rather than evenly distributed

@lBadBoy1l

9 күн бұрын

@@jackbailey524 Wrong! The whole outer shell was also steel columns. It was not a new design or at a disadvantage of any sort. Actually it was designed to withstand exactly this type of scenario, and were some of the strongest building in human history. There is a full documentary of the building of the towers. You should probably use that for reference instead of fanboys with a motive. Do you not see how they have to use mental gymnastics to get the answer they want?

I remember clearly, I was at the airport in Zurich when it happened, and we were watching at the TV screens in disbelief at what had just happened. This explanation is just one of many theories., Many people claim to have heard several underground explosions prior to the collapse. How can anyone explain the mistakes of NORAD and DoD. How terrorists got into the cockpits of several planes and controlled them. Is it true that traces of beryllium particles were found around the zero point, which is associated with military Thermite explosives? I am truly sorry for all the dead, but despite this explanation, this is still a big, unsolved mystery to me.

@Cliffjumper24

8 күн бұрын

I can answer most of these. "How can anyone explain the mistakes of NORAD and DoD" There's 2 factors for this. 1: There were many delays and miscommunication between civilian air traffic controllers, and the military air traffic controllers. Some of the miscommunication was because the hijacked airliners had their transponders turned off, removing a lot of data such as altitude, heading and speed, leaving nothing more than a blip moving around. 2: Post the cold war, the US had reduced its air defences to just a handful of fighters, and even then, the standard procedure was the expectation that the enemy would be coming from outside of the US, but the hijackers attacked from inside the US. "How terrorists got into the cockpits of several planes and controlled them" The cockpits weren't armoured... so the hijackers waited for a member of the cabin crew to go and talk to the pilots, and then moved in to take control of the plane. In addition... having hijackers flying into buildings in a suicide attack was completely unexpected. For decades, the normal procedure was to obey the hijackers until they could land, and then the authorities would negotiate for the hostages to be released. "Is it true that traces of beryllium particles were found around the zero point, which is associated with military Thermite explosives?" No. The "thermite" claims come from a 9/11 truther who (several years later) claimed to have a sample of dust from the attack, and when examined under a microscope, they found browny red flakes or iron oxides... which are found in Thermite. However, red oxide is also found on lots of normal things too... including 'paint'! Red oxide is a common undercoat paint, which could come from metal girders, walls and many other things. Think of it this way... flour has been the cause of explosions when the dust has been ignited. But finding flour in a kitchen doesn't mean it's a part of a plot to cause an explosion!

@Butter_Warrior99

4 күн бұрын

@@Cliffjumper24 Unfathomably based response.

Wow. This was explained extremely well.

I can't believe a video with Hulk executing the Trade Center is the only video in 22 years to explain this in a way that seems logical. The question was always: if the floors pancaked, where was the steel core? The sagging floor demonstrating pulling the walls inwards makes a LOT of sense.

@tonyduncan9852

2 ай бұрын

The planes engines blew through the towers. Heavy components took out or distorted many core columns, the others descended by being dragged down by the external walls _through_ the top hat truss. It was my first thought too - but I am an engineer . . . and thought again.

@frostfamily5321

2 ай бұрын

I did not expect that Gmod💩! 😏

@CoercedJab

2 ай бұрын

Certainly “seems” logical. Yet the inconvenient truth remains. Never forget even the experienced news casters that day said the phrase “controlled demoIition”

@DGTelevsionNetwork

2 ай бұрын

The steel core remained for a few minutes before also giving out, likely from joints no longer being within tolerance and also falling like a house of cards. You can see it happen in real time with the NBC coverage of the collapse. Once the smoke clears a little bit, you can clearly see the cores failure.

@tonyduncan9852

2 ай бұрын

@@CoercedJab what a difference the words *_like a_* make when omitted . . . 😎

I was there during the first attack on WTC(1993 Bombing), and barely escaped with my life. I had access to the area after the bombing, so this is a first hand account. The concussion of the blast completely defeated the "spray foam" insulation. It fell off the steel trusses and columns like snow. It was everywhere. The insulation was designed to insulate against a fire, not withstand an impact. It is my opinion that in 2001 the impact of the airplanes causes the insulation to "delaminate" and fall off the structures (trusses, beams, columns...) they were designed to protect, thus hastening the inevitable collapse. I think that if the insulation was actually in place, the towers would have stood for longer, or not collapsed at all. I also wonder how much asbestos I inhaled that day.

@prismen5535

Ай бұрын

very insightful! glad you managed to escape. i agree with your conclusion, it seems like the most probably cause. it's truely a tragedy through and through.

@ciaranbyrne62

Ай бұрын

You've had 22 years I'm sure you'll have another 22😊

Excellent presentation. I had a vague understanding of the collapse, this makes it quite clear. I really look forward to your presentation on Building 7.

@jacobstrawn4174

Ай бұрын

We don't talk about building 7

@diegozanichelli4071

Ай бұрын

We look forward about your presentation. It's not up to other people to make a presentation for your stuff

@humbaba_7730

Ай бұрын

@@jacobstrawn4174😂😂 we don’t. they can’t explain that.

@2coolwheels139

Ай бұрын

@@jasonr.9520 LOL....Well, don't tell me, Mr. Know-it-all. Tell the guy that made this video.

Kudo to the engineers. Your designs brought people time to reach safety before the towers collapsed. Your designs had saved many lives on that terrible day. RIP September 11 victims. You are gone but never be forgotten. 🙏

@Matt-pt6rl

12 күн бұрын

The victims you pray for are waiting, whips in hand , for their killers …. And their killer’s apologists!

@Diggymafiggy

10 күн бұрын

​@@Matt-pt6rlthe killers are already dead

@Matt-pt6rl

10 күн бұрын

@@Diggymafiggy you knew them? Relatives? Neighbors of yours ? I hope you’re getting ready , I hear the crack of a whip

@Diggymafiggy

10 күн бұрын

@@Matt-pt6rl I hope you know😚

@Matt-pt6rl

10 күн бұрын

@@Diggymafiggy I weep for the future. Damn! There’s that whip snap again!

Interesting to see 89001 at 13:52. I believe that Amtrak was testing it on the NEC at the time with view to ordering a fleet to replace AEM7s on Keystone services.

@Cliffjumper24

8 күн бұрын

I laughed at that too! Pretty sure the Badger was never fitted with 600v DC 3rd rail!! LOL!

This is actually very informative and interesting. Thank you!

The only problem I have with the animation in this video is that the animator rendered the video so that it made it appear as though the building was collapsing at ground level, whereas in reality, the collapse occurred right below the damage area in the building. The floors were collapsing in a pancake fashion starting below the fires and continuing on down.

@michaelcrispin1879

Ай бұрын

I noticed that too. Very strange.

@feralzi8930

Ай бұрын

Nano Thermite

@vuurkip2491

Ай бұрын

@@feralzi8930 did you watch the video

@vuurkip2491

Ай бұрын

It looks like they didnt actually animate a collapse they just made the model move down and have ruble move upwards from the ground

@feralzi8930

Ай бұрын

@@vuurkip2491 i did watch the video but but you know what's very strange is that the towers were engineered so that it can withstand a 707 crash. You think fuel from 707 coming from the middle east will have a tank full of fuel? Most of the fire exits through the hole the plane makes and some of the fuel can spill out. So it's dumb and illogical to say that just plane fuel can collapse a building after 1 hour of the towers withstanding it. There is definitely external interference occuring that cause the building to basically freefall

Such a sad day. Impressive analysis. Thank you for making it understandable for the layperson. I used to work in 7 World Trade. Looking forward to seeing the video you make of that collapse

@TheRamblingBoy

Ай бұрын

And they found one of the pilots passports on the ground amongst the debris pretty much imediately - what are the odds of it surviving the impact, the fireball and then for "someone" to pick it up amongst the rubble.

@dirkdiggler8260

Ай бұрын

@@TheRamblingBoy Not as small as you'd think given that paper _& the like_ are much more likely to survive & be ejected by a blast due to its large surface to mass ratio. It was found alongside thousands of other pieces of paper that had also been ejected in the incident. He was not the pilot & his passport was almost certainly not in the cockpit when the plane hit. If you're suggesting it was planted (not sure if you are but that's what most people who bring this up seem to believe), what would be the point? He was on the flight manifest so we know he was onboard. It would serve no benefit to the story whatsoever & would therefore be a needless risk.

@bruzote

Ай бұрын

@@TheRamblingBoy - The odds are 100% that given enough obscure and meaningless events, you can ask "why" about all of them and eventually at least one of them will leave you puzzled if you expect it to have meaning. It happened because nearly infinite events also happened that were not so confusing to you. You can't know everything, and Bayes would agree with me on that. Still, I will oblige your astounding ability to fixate on meaninglessness. How about the fact that a pilot's passport would be at the front of the plane, possibly pushed right out of the building by the air blast *immediately* as the plane's structure collapsed and the bag ripped apart? Is that so hard to accept? Who cares? What would that have to do with any conspiracy even if there were one? You might as well ask why one of the 9/11 pilots had a French name. Oh, my, was it because the French people had helped plan this since 1750, and THAT is why they helped the US win the Revolutionary War? They needed us to win that war so 9/11 could happen? Sounds silly? No duh. So is your question about a lowly, meaningless travel document, one of many you might find after an airline crash.

@runethorsen8423

20 күн бұрын

@@dirkdiggler8260 it would and did straighten the narrative on DAY ONE - the Osama Bin Landen connection... The whole villain narrative was built by events like finding the passport of a terrorist.

Brilliant explanation and graphics - The physical atttributes of the building were simply mind blowing. The way it was raised to the ground even more so. Thank you for the video!!

@lzrnurse79

Ай бұрын

I saw an explanation of how long it takes for jet fuel to burn itself out. How much weight the floors would be able to sustain other floors in case aubergine like this were to happen. Also how the tower came down like a strategic demolition of a building. Also 45* angle cuts on the beams. I don't know if it was our government but what's true is the innocent lives lost at the towers and the soldiers who fought after this tragedy.

@crhoads1024

29 күн бұрын

Don’t know if you realize this but one important graphic of the collapse was completely incorrect vs what was witnessed that day.

@brucelansberg5485

29 күн бұрын

@@crhoads1024 Well, actually more than one. Yet those were nothing more than simulations that maybe are difficult to get right with the software used. I don't know. The presented collapse mechanism is correct though.

Thank you lesics .. i am embedded Engineer and i watched your videos. its very informative. I suggest you please make video on Aspiration type smoke detector.

It was hard to like this video given the subject matter but I did anyway as your explanation couldn't have been better in how you broke it down and walked the viewer through. It's humbling to see how much thought and effort went into their construction and equally tragic to see how it was undone.

Jsou tam nesrovnalosti třeba v tom testu s plechovkou , tam je plechovka dole a nese plnou váhu ale dvojčata byla zasaženy 1 nad svou polovinou a 2 ve třičtvtě takže ta plechovka měla být umístěna tak jak byly zasaženy dvojčata . Další věc palivo shořelo z většiny při narázu a nasledném výbuchu bod tavení oceli je 1539 C , takže ocel měla teplotu požáru vydržet i nosnost . Další zajímavá věc je jak může hliníkové letadlo zničit ocelové jadro ve dvojčatech to je nemožné , kdo nevěří at vezme něco hliníkového a zkusí přerazit ocelový nosník . Když se podíváte na ty pády dvojčat tak to vypadá jak řízená demolice , protože se složili pěkně na jedno místo a nezůstali žádné větší trosky , jen hromady nosníků a betonu nic víc. A je zajímavé okolní budovy zůstaly stát po pádu dvojčat . Budova 7 v které jen hořelo šla k zemi až mnoho hodin po pádu dvojčat , a také se pěkně složila na místo kde stála nezbylo z ní vůbec nic než jen ocel a beton stejně jako z dvočat . Otázka zní kdo na tomhle měl zájem ? PS : Je mi líto všech lidí co tam zahynuli 😪😪.

@y0ut0be

5 күн бұрын

Several things: 1. WTC 7 WTC 7 was not unimpacted by the towers falling. Many tons of debris fell onto and into the building causing mass amounts of damage. Along with this, a fire started in the building which was unable to be supressed due to the fire supression system in the building being annihilated by debris, along with fire fighters who were occupied with other more important matters at the time. 2. Yes the plane can punch through the steel columns in the core The core columns were horizontally supported by the steel trusses. Once those started to give way, the core went along with them. No, the core was not laterally braced (which could have prevented the collapse). The plane in question was going extremely fast, no doubt carrying several hundred thousand joules of force behind it. This allowed the plane to easily punch through the steel columns, disintegrating the plane in the process. It is the same as an asteroid hitting the earth. Its just cobbled together rock that burns easily, however they go so fast that if they do impact while being intact enough they can wipe out an entire town. 3. Of course the other buildings were still standing WTC 7 was right next to the towers causing severe damage. The other buildings however were far enough away to be unaffected by fire, but no doubt were still severely impacted by debris and dust. 4. FFS it was not a controlled demolition What type of plane crash speaks "controlled demolition" to you? Not to mention the vertical collapse was explained in the video, which you apparently didn't watch.

I was taking engineering when this happened. My structural engineering professor was very confused about how the towers collapsed. He said that it didn't make sense. They shouldn't have fallen; let alone a total collapse.

@octanebd

Ай бұрын

Thats because he was not contacted/funded by the feds so he was free to use his brain.

@marcpowell5893

Ай бұрын

Really? Apparently your professor never heard of progressive collapse or maybe he made his misinformed comments before seeing videos that clearly show the floors pancaking into the basement.

@scottcraig2569

Ай бұрын

@@marcpowell5893 Watch the actual video. The building collapses from the bottom, not the top. The top of the building in intact until it hits the ground. debunking the pancake theory.

@scottcraig2569

Ай бұрын

@@marcpowell5893 And the buildings were designed to withstand an impact of an airliner.

@marcpowell5893

Ай бұрын

@@scottcraig2569 The graphics in this video are flakey but the theory it mentions is fairly accurate. After collapse initiation, the connections of the floors to the columns progressively failed resulting in the floors pancaking. That is what caused the sequential dust and debris ejections from windows seen in multiple videos. Claims by designers that the buildings could withstand aircraft impacts without severe damage were merely engineering hubris. The buildings obviously could not.

My brother was working for NYC OEM when this happened. He was a block and a half away when the first jet hit, and began assisting with evacuations. He lost his best friend that day, then in January of this year, he died from the cancer he developed from being there amongst the debris, searching for survivors and bodies. He may have survived the day, but that day eventually took him from us, and 3 surgeries to remove the cancer couldn't keep it at bay. He was almost 51 this year. My brother lived, breathed, and died for his city, his home. I miss my big brother every day, hoping I'll get a random phone call from him, listening to his perverted jokes, and finding out this was his most epic prank ever.....RIP, Paul 😭

@mooneyes2k478

22 күн бұрын

My condolences on your loss.

@wentillman8385

22 күн бұрын

@@mooneyes2k478 thank you! It was hell watching him go through 2 rounds of chemo/radiation and 2 surgeries, only to see it destroy his immune system and keep coming back. He's not in pain anymore, but he had to be in constant pain in order to be free of it.

The part that is never answered is how the 47 inner columns and elevator shafts would be affected by trusses that are not on top of them. Think of records falling around a spindle. Had the building really had this truss weakness, the core structure below the impact would still remain as flimsy trusses off to the sides wouldnt be strong enough to even move them let alone disintegrate them. If a few buckling trusses taking out 110 floors in BOTH buildings total isnt beyond far fetched, the non-explanation for how forty-seven 36 inch steel beams 5 inches wide were pulverized to dust while not being beneath any of the trusses is literally an IQ test failure. Go get educated in physics before buying anything. These amateur hour graphic attempts are providing implausible explanations for collapse if you are willing to buy them. Learn the laws of physics and how they dont apply to this collapse. See if you can find examples in reality where less mass from above takes out the much more resistant mass below without demolition and while at freefall speed (not slowing down). Then cite all your real world examples for the rest of us to see. It would take multiple fire-bombers to pelt this building enough times to take out the entire building. It wasnt made of tinfoil as all these videos seem to imply when it comes to a full scale pulverized concrete, steel, machinery and furnishings. Some additional advice would be to look at the video of the making of the World Trade Center and see the structure and other massive engineering designs that suddenly all magically became powder. I actually took a tour of the towers the year before the event and they mentioned the issues in cost for air conditioning, elevators, asbestos etc that all prove be very costly unless they were demolished. So I wasnt in as much shock that they were imploded, but was in sheer shock how they staged an entire event to make it profitable with people still inside! Education goes along way when discerning truth from belief. What probably is not allowed on youtube is alternate video explanations that actually would explain how else two 110 story buildings and a 3rd high rise building in the same area built quite differently, all collapsed into their own footprint. Media control and monopoly is doing us a great disservice, people. History has become the narratives they want you to believe versus actuality. If you also really buy into that our skies are typically that unprotected after the first strike, and that the Pentagon was as well, which is considered the most protected airspace in the world with layers of defenses to protect it, well you are just gullible to a fault.

@brucelansberg5485

28 күн бұрын

_"The part that is never answered is how the 47 inner columns and elevator shafts would be affected by trusses that are not on top of them. Think of records falling around a spindle. Had the building really had this truss weakness, the core structure below the impact would still remain as flimsy trusses off to the sides wouldnt be strong enough to even move them let alone disintegrate them."_ You've got the idea of the collapse sequence right. That's a good start. The core columns would probably have encountered a lot of impacting from the falling mass. And remember the core columns were made from 3 story tall elements, welded along the long side only, from the outer side only. Plus the core wasn't cross braced. The core was unable to stand alone, without the lateral support of the floor trusses. In the end we did see the core standing last, until it buckled under its own weight. _"If a few buckling trusses taking out 110 floors in BOTH buildings"_ It's not the trusses that took out floor by floor. It was the mass of the falling upper part that took out the truss seats (the L-shaped elements that kept the trusses in place). _"forty-seven 36 inch steel beams 5 inches wide were pulverized to dust"_ You think the steel turned to dust? The columns were pulverized? What makes you think that? _"Learn the laws of physics and how they dont apply to this collapse."_ What exactly seems to be the issue? _"See if you can find examples in reality where less mass from above takes out the much more resistant mass below without demolition"_ Every single progressive collapse is your example. Just like the 1 single domino that makes the other 999,999 fall over. Curious by the way what you mean by "much more resistant". The only resistance that needed to be overcome was the resistance provided by the truss seats. In every single photo from the debris, we see these truss seats bent down or even broken off of the columns. _"and while at freefall speed (not slowing down)."_ Hold on there. There is no such thing as free fall speed. Free fall is a measure of acceleration, not of speed. Free fall will make stuff accelerate at a rate of 9.8 meters per second per second, or 9.8 m/s2. Any resistance will reduce that value and make the acceleration decrease. Decreased acceleration does not mean decreased speed. It just means it wil accelerate slower. Only if the acceleration is less than 0, the speed will reduce. _"It wasnt made of tinfoil as all these videos seem to imply"_ What? Where is such implied in this video? _"Some additional advice would be to look at the video of the making of the World Trade Center and see the structure and other massive engineering designs that suddenly all magically became powder."_ No steel turend into powder. Just bits of concrete and probably all of the sheetrock. _"I actually took a tour of the towers the year before the event and they mentioned the issues in cost for air conditioning, elevators, asbestos etc that all prove be very costly unless they were demolished."_ Sorry mate but that's nonsense. Costs of airconditioning and elevators are simply calculated in the rental fee. Like with every other high rise office building. Cost of asbestos removal was estimated to a 200 million USD. The Port Authority of New York sued their property insurers for this amount and it was a widely publicized issue during the 90's. A lot of information is still available about this issue. In addition, demolishing a building hardly lowers the cost of removal. Lastly, the bidders on the WTC lease knew about this issue and made a bid accordingly. This claim of yours is completely nonsensical. _"I wasnt in as much shock that they were imploded"_ That's not what happened though, is it? Unless of course there is some kind of evidence that backs up this claim? _"Education goes along way when discerning truth from belief."_ That's starting to sound a bit ironic now. _" all collapsed into their own footprint."_ Own footprint you say? Interesting since you mentioned WTC 7. Only if you believe WTC 7 was inside the towers' footprint, they collapsed into it. 20+ surrounding buildings were heavily damaged as a result of the collapses of the twin towers. WTC 7 being one of them. If the towers collapsed into their own footprints, how did these other buildings get damaged by the falling debris from the towers? _"If you also really buy into that our skies are typically that unprotected after the first strike, and that the Pentagon was as well, which is considered the most protected airspace in the world with layers of defenses to protect it, well you are just gullible to a fault."_ NORAD was tasked to protect the US at its borders. The attacks came from within the borders. Only after 9/11 NORAD has started taking care of the entire air space. What does "most protected air space in the world with layers of defenses" mean exactly? You do realize Reagan National Airport is one of the Pentagon's neighbors? Anyway, please define. You might want to look into your claim a bit more thoroughly.

@norepresentative2491

27 күн бұрын

​@@brucelansberg5485All that writing and copy pasting and you failed to provide experimental evidence that proves your position. Lol😂 Ironic indeed.

@pacman3556

27 күн бұрын

How the inner columns collapsed was explained. They buckled. Try watching the video again.

@allenx5358

19 күн бұрын

So glad there are people who still have basic common sense.

Thank you for this. Very good informative video about what actually occurred to the structure.

To this day, I'm puzzled by the fact there were no survivors from the Windows restaurant. I understand there were 3 or so floors above the restaurant. Also, I think the North Tower could have collapsed even if flight 11 didn't crash into it. The collapse would have happened at the same time WTC 7 did, & it wouldnt be til the wee hours of the following day for WTC 7 to fall too, which could have been devastating since the recovery efforts had already began.

@bruzote

Ай бұрын

Why would you expect survivors? I am trusting your claim none survived, but why expect them to survive? Also, how many were there when the plane hit? I remember dancing there sometimes, particularly with Jet Set Six playing. At least I have pleasant memories of that.

@wwiiinplastic4712

25 күн бұрын

@@bruzote There would not have been many but there was a breakfast service. I worked as a manager in the Borders Books in Building 5 and we had business accounts with WOTW and knew a couple of the employees. I arrived about five minutes after the first plane and was standing in front of the Millennium when the second hit. I loved working in the WTC; I still remember when Salman Rushdie came in for a book signing and I joked about how dangerous it was to stand next to a guy the Muslims wanted dead and then a year later I'm running for my life down Fulton.

@jimmycricket5366

12 күн бұрын

​@@wwiiinplastic4712What I can't understand is those helicopters circling the general area. They might not have had rescue cables and baskets themselves but they could have immediately radioed their coastguard friends with their helicopter to help those trapped above the impact zone. They had plenty of time to do it and also they could have rescued a few folks from the top of the building. It's almost as if they didn't want anyone with in-building witness testimony to be saved and share their testimony. Weird hey?

@ClaytonBigsby93

9 күн бұрын

@@jimmycricket5366No, not weird at all. There are plenty of weird & conspicuous details surrounding the events of that day, but those circling helicopters are not one of them. Because you seem to have a misinformed understanding of both a) the capabilities of rescue helicopters in that scenario, and b) what those helicopter pilots were seeing that day. Or rather, what they *didnt* see. There’s been multiple documented interviews with some of the heli crews. Nearly all of them said they were in fact circling the buildings in hopes of deploying any possible sort of rescue attempts, which is corroborated by the fact nearly all the footage from that day shows those helicopters circling near the tops of the towers as opposed to the mid-section. Had they seen even a single person on or near the roof that day, recalling a quote from one of the crewman, he said they would almost certainly have attempted rescue. But therein lies the problem - for reasons speculated though not definitively known, not a single person was seen nor recorded waiting atop the roofs of the towers. Whether it be due to inaccessibility or simply neglect due to the logical mindset for escaping a tower engulfed in fire is to go down, not up. We simply don’t know & probably never will. And I’ll assume you’re not actually intending to insinuate that helicopters dangling cables could ever feasibly rescue any of the unfortunate souls hanging off the side of the tower windows with billows of smoke rising from every angle. Because it really shouldn’t need to be explained why that would be an impossible endeavor.

@jimmycricket5366

9 күн бұрын

@@ClaytonBigsby93 Perhaps you could opine on another issue that I'm struggling to make sense of. Much is made of the idea that the jet fuel burned for days. My experience is that kerosene or jet fuel atomises relatively easily, and is designed to do so. If you slam that fuel contained in essentially a 'paper thin' containment means into a solid structure at great speed it will have created an ideal scenario for instant atomisation over a very wide area inside and outside the building. When seeing the footage of the sheer magnitude of the fireball that was emitted outside the building it's hard to imagine that the vast majority of fuel, (if not all of it) was combusted in the initial explosion and ensuing fire over a matter of a few minutes, not to mention that much of the fuel surely was likely projected through and outside of the building? I would have thought sufficient oxygen would also have been availed for this combustion with the rush of air accompanying the fuel as it hurtled through pathways within the structure.

The world trade centers were designed to withstand several airplane impacts. Second, the fuel was turned into a hot gas which rose, not sank. There was not enough liquid fuel left to melt those steel columns 90 floors down. Firefighters and civilians reported explosions coming from the basement and going up the buildings before the planes even hit. There is still footage on Rumble of demolition charges going up all of the buildings including world trade center 7 as well. Thermate-TH3 which is a (military-grade explosive) was found in every dust sample collected from the world trade centers. They can cut through steel columns like butter and that's why there was molten metal in the basements months later. Those buildings were brought down using pre-planted thermate-TH3 cutter charges in controlled demolitions. And whatever hit the Pentagon was not a commercial airliner because it was far too small and did not come from the sky. It went across the ground on a completely flat trajectory which means it was probably launched from some type of moving platform. No airplane debris was ever found on the Pentagon lawn. No engines, no wings, no fuselage, no tail section. The wings and the engines should have been sheared off as soon as it entered the building (which would probably be impossible). It was a missile. And in the crater in Shanksville there was no plane debris either. There's still footage about that on Rumble as well.

@mooneyes2k478

18 күн бұрын

@@norepresentative2491 "I wonder why the wings didn't come off at least partially as they hit multiple light poles on the way to the Pentagon." 1 ton car moving at 60 mph hits a light pole at the BOTTOM, where the leverage is the least. Light pole loses. Minimum of 64 ton plane moving at 500 mph hits a light pole at the TOP, where the leverage is the greatest. So, of course the plane would lose. Right? Makes PERFECT sense. If you want to pretend, that is. For those capable of thinking instead of bleating along....not so much.

@YouTubeSucks12328

17 күн бұрын

Drive-by Truthing I see - as expected

I've got to hand it to those engineers. The structure they built for the World Trade Center is the reason thousands of people went home to their families that day. The towers held at least 14,000 people at the time of the attacks, and stayed standing long enough for most of them to get out. Can you imagine how much worse it would have been if the WTC immediately fell sideways?

@jeshitorenburei224

Ай бұрын

@@WHATISTRUTHTVTrue.

@The_Lost_And_Forgotten2009

Ай бұрын

a LOT more to the kill count if it fell sideways...

@Galvatorrix

Ай бұрын

​@WHATISTRUTHTV They wanted to hurt New York, Not cripple it. Would have ruined the financial centers falling through through the city

I'm just so privileged to stumble upon this video. So enlightening. Kudos to all engineers world wide.

@dynomik

25 күн бұрын

WTC7?

@nathanwoodruff9422

24 күн бұрын

_"I'm just so privileged to stumble upon this video. So enlightening. Kudos to all engineers world wide."_ You should be asking why it took 22 years to come up with this misinformation rather than a week after the collapse. Did smart engineers not exist in 2001????

@EldiniTheGenie

22 күн бұрын

@@nathanwoodruff9422 this info always existed, this dude is just poorly regurgitating it. i wouldn't use this video as a specific source

@connyjensen1877

21 күн бұрын

@@nathanwoodruff9422 my question exactly!

This is a very educational breakdown. It really puts in perspective where the impact points were.

@gititgiitit5450

Ай бұрын

It's not educational at all. And common sense would tell you that the mass that fell would meet resistance and fall away. Topple over. But it all fell at free fall speed. History trying to rewrite itself. there were fire fighters on the floors who said they had things under control. If you watched original footage you'd see much of the fuel burned up outside the building on impact. And the explosions that happened on the floors below after as the towers collapsed showed controlled demolition.

@juliuscaesar564

Ай бұрын

@@gititgiitit5450 its educational for those who wanted to see how the tower was built in the first place. Common sense doesnt entail exact specifications or detail

@mpup54

28 күн бұрын

There is a video out there about the making of the World Trade Center.If you still think its a flimsy building taha can reduce itself to powder after you watch it, then watch it again.

Outstanding video. Thanks for the knowledge.

Knowing this, makes me ask: Did the organization who made this massive crime know about all the engineering, technical-structural details at this level to commit (as a goal) the collapse of the towers? 🤔

@ddichny

19 күн бұрын

They didn't need to. They probably presumed that slamming huge jetliners into the towers at full speed would have collapsed them immediately (most people would presume that, and it's amazing that they managed to stay standing for as long as they did). And they also knew that even if the jet impacts weren't enough to bring down the towers, it would still cause shock, horror, and a few thousand deaths at a minimum. Either way they'd achieved their terroristic goals. The exact detail of how it might play out wouldn't be that important to the 9/11 planners.

@marcinzemla6265

17 күн бұрын

People who lived near watched crews work every night for 2 months before. Lined the special taker down stuff to bring the right temp. The buildings were over engineered . Should have been able to take more planes and not fall. Amazing pilot skills. The governments of the earth number one job is depopulation thats all we need to know

This video answered a lot of questions I had for literally over 20 years.

@Matt-pt6rl

7 күн бұрын

Were you in a coma for twenty years? Did you have questions about making false narratives?

How do the architects and engineers involved in the design and construction of the twin towers feel about this explanation. I just find the speed of the collapse downwards, without any resistance from the concrete reinforced constructs giving any pause for the collapse, astonishing.

@Claxiux

2 ай бұрын

the dancing israelis didn't find it surprising

@Cpt.PickHard

2 ай бұрын

Minoru Yamasaki was the architect of wtc, and he was notorious for designing buildings with catastrophic flaws.

@wookillerqueen8725

2 ай бұрын

The Towers were NOT concrete reinforced.

@lajoswinkler

2 ай бұрын

Again, one of you "truthers" fails in their premise, therefore making any conclusion laughably false. *World trade center towers did not have any reinforced concrete.* They were made of steel plate boxes (down to quarter inch thin at upper floors) and I-beams, all sprayed with loosely adhering fire retardant foam. Upper floors had original, asbestos based, crumbly foam. Scenario where heavy airplanes at full speed hit the buildings and initiate a sudden multistorey fire fueled by office combustibles was WAY BEYOND THE SAFETY DESIGN LIMITS and the fact they stood for so long goes to show how well they were designed. Contrary to this video's false idea, any other classical steel building with evenly spaced columns would fall very fast or almost immediately from the impact alone.

@lajoswinkler

2 ай бұрын

@@Cpt.PickHardThat is pure slander and idiocy. Yamasaki was the architect, not the structural engineer. You don't even know what those jobs are.

I'm still skeptical as to how the whole building just collapsed down perfectly like the way they did. As tall as those two buildings were, they could've leaned and fell onto others nearby.

@brucelansberg5485

Ай бұрын

_"I'm still skeptical as to how the whole building just collapsed down perfectly like the way they did."_ Not sure if the word "perfectly" adequately describes what happened. Some of the facades of the towers fell down as one piece. Slabs of still connected perimeter panels fell into Deutsche Bank Building, WTC 7, World Financial Center. Looking at overhead pictures taken shortly after 9/11, we can see these slabs covering West st and for example Greenwich st. A perfect collapse would not have touched 20 surrounding buildings of which some needed to be completely demolished. _"As tall as those two buildings were, they could've leaned and fell onto others nearby."_ That is basically what happened, just not in one piece. High rises won't topple over, unless there is some kind of pivoting point at the base. As soon as any leaning starts happening, the leaning part will break apart. The engineering of buildings usually don't provide calculations for leaning buildings. When tilted, forces shift within the tilted part up to the point it will simply fall apart.

@A_A187

Ай бұрын

i dont think the foundations would have allowed the building to fall over how you wanted it to

@ddichny

19 күн бұрын

Gravity works in a downward direction. Massive things that fall tend to go straight down, at increasing velocity, and are resistant to going sideways without a vast amount of sideways force applied externally. Glad I could clear that up for you.

10:13 I'm sure you've been told this over and over, but your collapse segment here is inaccurate. The sky lobbies you illustrate in light grey compared to the entire building sink to the ground. This was a progressive collapse, so this wouldn't have happened. I suggest you re-do your animation to keep those sky lobbies stationary in your next deployment of your video. Other than that, it looks good. :-)

The best solution to making sure a terrible terrorist attack doesn't happen again is to be respectful to other countries that have a different culture from our own. They call the USA a melting pot and they call Canada a salad bowl. That's because we - for the most part - celebrate our differences instead of forcing new citizens to assimilate. We not only celebrate our differences because it's the right thing to do but we are also acutely aware that new arrivals who are not accepted and are, by whatever means, forced to assimilate still have many supporters in the "old country". Canada had its '9/11' when the fully loaded Air India 747 was blown up over the Atlantic Ocean killing all 329 people on board back in 1985.

You forgot to mention the explosions on each few levels down during the demolition. The slanted steel frame underneath the building, done BEFORE the collapse of the towers. The molten steel that moved slowly like lava in the floor below, melting the soles of the rescuers. That steel could NOT melt due to the heat of kerosene. Good job doing disinformation!

@TheMiddleClassholes

Ай бұрын

Why bring up fiction?

@brucelansberg5485

Ай бұрын

_"You forgot to mention the explosions on each few levels down during the demolition. "_ You mean the puffs that appeared every fifth floor so? Those random puffs? Have you considered the possibility this was pressurized air trying to find a way out? Have you ever witnesses an actual demolition in real-life? _"The slanted steel frame underneath the building"_ What are you talking about? The 45 degrees cut angles? That appeared only weeks after 9/11? As a result of the cleanup process? While clean up workers were using blow torches to cut the vertical parts of what once were huge columns? The cuts that we ONLY see at ground level? _"done BEFORE the collapse of the towers"_ Really? I'm sure you have some kind of evidence for this you can share? _"The molten steel"_ There is zero evidence for molten. Molten metal? Probably. Molten steel? Nah. _"That steel could NOT melt due to the heat of kerosene. "_ What does kerosine have to do with 9/11 other than it set fire to the office contents? _"Good job doing disinformation!"_ Don't underestimate yourself. I think you're a lot better at this than the creator of this video.

I decided to return to my autism-fueled fixation of 9/11 tonight and absolutely was not expecting the Hulk to come in with a machete 20 seconds in, completely threw me for a loop

Great video but it needs a few corrections: 1• Jet fuel was not the only material burning in those towers. In fact, it probably burned off within a few minutes. *BUT* it acted as an accelerant that started office fires, which BTW burn _hotter_ than jet fuel! (It was the office fires that burned at up to 1000°C or 1800°F). And those office fires had virtually unlimited fuel! 2• The collapses of the towers took considerably longer than stated here; the north tower took over 20 seconds to come all the way down! Time it yourself: kzread.info/dash/bejne/d4eVq6ePqK_Ue5c.html 3• The critical "condition" the engineers did not consider was the _speed_ of the crashing airplane. The 9/11 jets were going roughly 3x _FASTER_ than the test scenario, and since kinetic energy goes as the square of velocity, the 767s struck the towers with approximately *_nine times the energy_* which did considerably more damage to the towers' structure than they planned on.

@user-zen721

Ай бұрын

Jet fuel, at high volume and 88.9 hydrideaxial concentration, burns for several hours. This was a key factor. Perimeter steel became scorched to a very high temperature, then warped and buckled. Unfortunately this results on dropping sheet floors onto the next layer down. It was very very heavy causing this to repeat, then repeat, sagging again then repeat. It was a true tragedy.

@joannemoore64

Ай бұрын

Point me to evidence to show that 3* please?

@anthonywilliams7052

29 күн бұрын

Not according to NIST NCSTAR report, "the steel NEVER exceeded 350F, no microcrystalline damage". For those that don't know, steel gets stronger at that temperature, is 130% strength and doesn't lost ANY strength until about 550F. Also, buildings are designed for a 3 to 5 times load and NONE of the floors below the crash were on fire. Except for the BASEMENT X- low - sion BEFORE the plane hit.

@Tim22222

29 күн бұрын

@@anthonywilliams7052 The NIST NCSTAR section you cite _was specifically referencing certain pieces of recovered steel not from the fire zone._ Dig a little deeper & you'll find the part where fire-protections engineers estimated the temps exceeded 1800°F at the heart of the fire zone - enough to weaken steel by up to 90%!

@Tim22222

29 күн бұрын

@@joannemoore64 Analysis of the videos showed AA11's speed at impact estimated to be 490 mph; UA175, 590 mph (depending on which studies you look at). According to WTC chief structural engineer Leslie Robertson, the scenario they considered was a plane lost in fog (not attacking) and doing 180 mph.

This was an interesting video and explained the collapse well. The only issue was that the plane showed was a Boeing 787 Dreamliner, which didn't come into service until 2009. The actual planes that hit the towers were Boeing 757s.

@YouTubeSucks12328

22 күн бұрын

That no doubt is what the software had available.

I was only 3 years old, on my family's ranch in rural Montana. Only time I ever saw Dad cry. Mom took us into the storm shelter to protect from bombs. Heard they were targeting farms next, I was sure they were going to hit us hard. I'll never forget the pungent odor of thermite in the air that morning... Never forget. 😢

@mooneyes2k478

13 күн бұрын

You smelled "the pungent odor of thermite" on a rural farm in Montana? Yeah, I don't think that was thermite you smelled....what with a farm and all.

@marquisgt

13 күн бұрын

@@mooneyes2k478 You ever smelled thermite? You don't soon forget... It was burned into my tiny 3-year old olfactory nerves... As was the existential fear of that fateful day!

@mooneyes2k478

13 күн бұрын

@@marquisgt All the way to Montana. Sure it was. Or did you have one of those magical new-fangled smell-o-vision tvs? Sounded really cool, I'm sure, but you shot yourself in the foot. As noted, what with the farm and all, it sure wasn't thermite you smelled.

@marquisgt

13 күн бұрын

@@mooneyes2k478 Thermite is thermite, my friend! The bombs were headed our way, carrying the odor of thermite on their shells!

This was definitely eye opening, and appears to be based on legitimate science. It had always bothered me, that 2 of the largest buildings in the world, fell like they were professionally demolitioned. Not to mention the alleged suspicious stock market activity in the days leading up to the attack.

@mooneyes2k478

22 күн бұрын

There was no suspicious stock market activity. The put options you're talking about ended BEFORE the collapse, and so there was no effect. They were recommended by known trader magazines, because both airlines had had a steady decline in stock value over the course of the year. And most notably, there were several, significantly larger, such runs on put options over the course of the year prior to 9/11.

I'm a civil engineer and I can say that the damage in the top of the building should not afect to the bottom of the tower. Instead you can clearly see the multiple detonations going from top to bottom which is what causes the actual collapse of the bulding.

@starlight2812

20 күн бұрын

Many inconsistencies.... Aluminium aircraft completely disappeared into steel column building....including the slender wings and the tail. Yes, the top part should rotate and fall. If it's heat from the fire that affected the strength of steel columns, still the collapse would be gradual as there is tons of redundancy, specially from the inner core.

@brucelansberg5485

20 күн бұрын

_"I'm a civil engineer and I can say that the damage in the top of the building should not afect to the bottom of the tower."_ Utter nonsense. I have yet to find one single "civil engineer" that denies the existence of the phenomenon of progressive collapse. _"you can clearly see the multiple detonations going from top to bottom which is what causes the actual collapse of the bulding."_ Detonations you say? You mean the puffs of dust? Try and look up the detonation velocity of RDX and compare it the velocity of the dust puffs we observe. Civil engineer my ass.

@ikueconsultingco.ltd.4728

19 күн бұрын

f you take the entiere quatity of the material used for those buldings and the poor amount left on the ground, you will understand the truth. It can't never be this low amount of trash (debris). So i belive at the Theory of some poples about the first time when they start to build. It was stipulated by the building authority that in the event that the buildings had to be removed at some point, there would be a plan without damaging the neighboring buildings. Some people say that small nuclear explosive devices were integrated into the construction, which also explained the pulverization.

@jillhal5463

19 күн бұрын

You Are Awake. Military Grade Nano Thermite every 33 feet is the only thing that can cause a building to Free Fall. Jane Stanley who just happened to be in the US on 911 reported Building 7 collapse 25 minutes before the building was Pulled. Who says Pulled? Building Demolition Crews ONLY, plus the lucky owner of all 3 buildings, who said they were going to Pull Building 7. Mayor Rudy was forced to leave his command post in Building 7. They could have warned all Humans to leave the 3 buildings but SHEEPLE don't matter to Our slave masters. I know who they are, but You wouldn't believe me if I listed them here. .

The BBC's documentary series Horizon did a very informative and respectful episode on the fall of the world trade centre. It's available online and is well worth a watch if anyone wants to know the details of the fall without sensationalism and drama.

@rhetorical1488

24 күн бұрын

the same BBC that reported the fall of tower 7 live on air 22 minutes before it did?😂 the bbc that protected ole Jimmy S?

@wifix3822

24 күн бұрын

@@rhetorical1488 let the sheep be sheep brother

@dikranovichk5889

20 күн бұрын

@whyfix3822. You tell him. I mean there are 3500 professional ”who have signed the nutter pledge. Forget the fact that there are millions of these kind of professionals world wide , who haven’t. Hey brother, do you know what 1% of a million is?

Really great video, thanks so much for sharing I had no idea about the engineering side of this terrible situation!

@Matt-pt6rl

23 күн бұрын

You still have no idea

@yootubenig

14 күн бұрын

​@@Matt-pt6rl😂😂

Thinking about all those people up there gives me shivers and makes me depressed. I don't think I would cope well if they were my parents or siblings. God.

@jimmycricket5366

12 күн бұрын

What I can't understand is those helicopters circling the general area. They might not have had rescue cables and baskets themselves but they could have immediately radioed their coastguard friends with their helicopter to help those trapped above the impact zone. They had plenty of time to do it and also they could have rescued a few folks from the top of the building. It's almost as if they didn't want anyone with in-building witness testimony to be saved and share their testimony. Weird hey?

You omitted that the plane crash test scenario was based on a hit from an aircraft that was on its way to land or takeoff and hence flying at a much slower speed with correspondingly much less force energy.

@MarkH-cu9zi

Ай бұрын

@@norepresentative2491 _"You omitted that aeronautical engineers have stated that "_ A couple of people not even being asked the right question. This video doesn't help you at all. Show me all the airline and piloting associations that support your claims. Take your time I'll wait.

@YouTubeSucks12328

Ай бұрын

@@MarkH-cu9zi - It doesn't care. Its questions are always rhetorical, framed to get a response - _any_ response. Pure attention seeker this one.

a lot of ppl died & its a horrible tragedy but that borrowed time from great engineering, architecture & construction allowed 1st line responders to rescue many people.......

Ok. Great video. The reasoning is sound. BUT ... #1: was the combined mass, velocity, and structural design of the aircraft (aluminium sheet and trusses) really sufficient to rupture/puncture the inner steel structure of the towers? And #2: the towers ultimately collapsed at or very near free-fall velocity, i.e. the upper, descending mass was not slowed by the lower static and fire-free structure. Thanks for any thoughts on or explanations for this.

@BrainFuck10

2 ай бұрын

His reasoning is half assed, the little soda can experiment is not comparable to steel and concrete towers with inner and outer support structures

@kyle381000

2 ай бұрын

@@BrainFuck10 His reasoning is fine, but his example is simplistic. The towers were held up by the strength and stability afforded to structural integrity of the perimeter tube design. Once that integrity was compromised, the structure became weaker and less stable. Given the damage done by the airplanes compounded by the effects of heat from the fires, collapses were inevitable. Just to clarify, above ground level concrete was only used in the towers for flooring.

@JonMartinYXD

2 ай бұрын

#1 Yes. The force of the impact on the North Tower was a bit more than the thrust of ten F-1 engines. No, not Formula 1 engines, but the engines on the first stage of the Saturn V rocket (five Rocketdyne F-1 engines). Imagine the force of two Saturn Vs at liftoff. #2 They did not free fall. A free fall from the 100th floor of the North Tower (first floor above the impact zone) would take 8.722 seconds. So it actually took 50% longer to fall than a free fall. Also remember that as the mass fell, it basically plowed down through the inside of the building. If you watch footage of it you will see the external columns - the outer structural skin - just peeling away. The external columns contributed a significant amount to the strength of the buildings, but were never designed to be freestanding. As soon as the hat truss separated from the external columns, which is what happened milliseconds after the collapse started, the external columns were providing effectively zero structural support. Each floor that failed when hit by the falling mass became part of the falling mass, adding to the momentum that would hit the next floor. If we had very high speed camera footage of the collapse it might be possible to see that it was not smoothly continuous. Rather, it was one floor at a time. The mass would be falling and accelerating, then it would hit a floor, abruptly but very briefly decelerate, then resume falling and accelerating. This cycle happened too quickly for human perception though. I hope this clears things up.

Were the towers hollow in the mid section? If so, how the jet fuel managed to burn in one place instead of leaking down and burn everywhere? I don't know... it seems like an elaborate video for an alternative explanation to a planned demolition. There are many things that don't add up about 9/11.

@0topon

Ай бұрын

they werent hollow in the mid section

@johnnyblue4799

Ай бұрын

@@0topon Yeah, not sealed either. There were stairways, AC vents, elevators. I'm sure all that fuel could have found a way to escape, not burn all in the same place. Why there are no limbs of fire flowing down on the outside of the building?

@0topon

Ай бұрын

@@johnnyblue4799 The burning fuel couldnt flow down the building because it combusted on the impact.

@johnnyblue4799

Ай бұрын

@@0topon Then it couldn't have burned for so long if all combusted on impact. Have you ever set fire to jet fuel? Not the easiest to burn. It takes a while to burn. So it has time to flow. kzread.info/dash/bejne/aaKAk5J8Z6m5kqg.html

@0topon

Ай бұрын

@@johnnyblue4799 I must correct me: Roughly a third of the jet fuel got burned on the impact because it got atomized, from the reamaining fuel some of it even entered the elevator shafts.

There was also a massive horizontal force displayed on the building. Many buildings are built with dampening so they can maintain under stresses like mechanical resonance. However such a large horizontal impact may have compromised the vertical integrity of the structure at the base. Causing a type on tension at the foundation due to the immense horizontal Force applied.

@ilovecops5499

25 күн бұрын

What about electrical resonance fro variable frequency drives?

This is a great explanation.

Amazing explanations ❤

WTC7 did have a far larger skyscraper fall on it. That may have had something to do with it.

Good interpretation of the physics of the "why" of the collapse of Towers 1 & 2. However, I am keenly interested in the physics of the "why" of the collapse of Tower 7...

@sanji1259

2 ай бұрын

and why the boss had an appointment at that day and why was there a new ensurance for a asbestos soaked building?

@SquidCena

2 ай бұрын

See, this is what totally made me realize that it was planned. You're telling me, a giant skyscraper, which burned for about 7 hours, just collapses? There wasn't even smoke or anything like that billowing out, and the skyscraper that caught fire in Hong Kong, didn't collapse despite it burning for 9 hours, and it was a lot less wider than WTC 7, which other buildings around did catch some fire, but were okay. Can't make this nonsense up, two trillion dissapeared on the same day as well? Yeah, what a conspiracy, the government would never do anything wrong to the people.

@sanji1259

2 ай бұрын

@@SquidCena where are the turbines? Where is any debris at the Pentagon?

@MrRockinneil

2 ай бұрын

Finally someone else asked this question besides me.

@takotako3321

2 ай бұрын

Lesics is doing a video on WTC 7 next. (Spoiler alert: It collapsed due to fire.)

Core columns were held in place by their own massive weight and welded together with ibeams surprised they came apart

@pacman3556

Ай бұрын

they weren't held in place by their own weight or welded together The columns were bolted together. Then they were held in place using to the floor trusses to connect them to the outer columns in a "bridge" like construction Did you even watch the video?

Very interesting. Perhaps an explanation about building 7 (the third tower that collapsed on its foundation despite not being struck by a plane filled with jet fuel) would be the logical next video

@YouTubeSucks12328

Ай бұрын

You should have actually watched this one.

@pacman3556

Ай бұрын

if you want to know about WTC7 maybe use that thing at the top of your screen called a search bar. If you still can't figure it out then maybe watch the video or read the pinned comment.

One thing i never understood. Why does a softer, sagging floor create more inward force on the walls than a straight one? I don't get this. it's the same load, and the load vector is downwards in both cases. If there is a pull inwards where does that pull force come from? Or is it that the floor is no longer working as a horizontal brace against the walls? But still where does the inwards pull force come from? I think I need to see some vectors to wrap my head around this.

@YouTubeSucks12328

8 күн бұрын

Its pulling on them. At the same time they are carrying more than normal load. At the same time they are being weakened by heat.

@brucelansberg5485

8 күн бұрын

_"Why does a softer, sagging floor create more inward force on the walls than a straight one?"_ The total downward force will not change, since the mass of the floor doesn't change. The load vector changes however. A stiff, intact floor will distribute its load onto the truss seats which are mounted on the columns. With a sagging floor, the center of mass changes to a point below those connections which makes the vectors shift indeed. Try putting up two wooden poles in your backyard and mount a steel rod in between. The poles will be fine. Now swap that rod for a steel chain. If the chain is heavy enough, it is near to impossible to get that chain as straight as the pole. Leave it alone, and your poles will start shifting into each other's direction. The tension in the chain pulls on the poles in the direction of the chain.

aside from some... memey moments, a very well researched video! Also is it just me or the audio quality is distorted?

Other people have said the main reason the towers fell was the fire retardant foam. The impact from the plane actually blew off much of the foam on the beams leaving the steel naked to the fire.

@cam128100

14 күн бұрын

That doesn't explain the free-fall collapse though does it. I think a child will conclude that it wasn't the plane what took down the building but instead layered explosives on each floor

@leungwong8382

14 күн бұрын

定點爆破

@thinkthonkbinkbonk

14 күн бұрын

@@cam128100 i think a child will conclude that you should shut up. stop bringing those who lost their lives into your conspiracy.

The B 767-200 is not twice as big as a 707. The length is very similar, the wingspan differs within just a few meters. Only the cabin width is considerably different. Concerning the MTOW, a B707 can be even way more heavy than the 767-200.

@ericackerly4877

2 ай бұрын

Aluminum does not stand up well against steel. I have seen what a duck can do when a plane hits one. I find it rather difficult to believe that much of anything of the planes would have been left to do the amount of damage required to bring down any steel and concrete structure loaded with fuel or not. On a side note the black smoke indicates a low burning temperature

@kyle381000

2 ай бұрын

It's less about the dimensions and more about the mass. Further, the collision scenarios set out by the architects envisioned a mid-sixties 707 nearly out of fuel flying low and slow, as opposed to a heavier airplane near-fully fueled for a trans-continental flight.

@rcpmac

2 ай бұрын

Fully loaded the 707 is 267,000 lbs. the 767 is 168,000 lbs

@Pouzdraken

2 ай бұрын

@@ericackerly4877 "On a side note the black smoke indicates a low burning temperature" well for one this is completely wrong, black smoke happens with hotter fires for natural material or fires involving man made stuff like rubber or fuel in general. you know, like a plane that blows up. Now as for the rest of that comment, wood is also known for being much weaker than concrete, however there are some images of tornado damage that appear to show otherwise. Its like questioning how paper being weaker than skin can still penetrate and make you bleed.

@bryanprice2800

2 ай бұрын

@@ericackerly4877 think of a lead bullet hitting a steal plate. lead much softer than steel will still go right through a regular steel plate. its more about mass and velocity than a materials hardness.

Thanks for sharing this. I'm glad building designs was improved, and they don't re-use the building methods in the 2 towers. September 11th truly was a sad day, but America has learned from it. And the master mind was brought to justice.

@hungariangeorg

24 күн бұрын

🤣🤣🤣🐑🐑🐑

@jimmycricket5366

12 күн бұрын

Whaaaaaat? Those buildings were way over-engineered, even for a Boeing 707-230B impact! They were amazingly engineered, but not for controlled explosive demo..

@computerworks1075

7 күн бұрын

OBL had nothing to do with it.

🙏 to all victims and survivors and their family’s.

@Matt-pt6rl

14 күн бұрын

Pray that the living will seek the truth and not dishonor the dead with lies and propaganda

@TheMiddleClassholes

14 күн бұрын

@@Matt-pt6rl Come on, dude. Stop acting like you care about the victims of that day.

@Matt-pt6rl

14 күн бұрын

@@TheMiddleClassholes the victims of the 9/11 controlled demolition?

@TheMiddleClassholes

14 күн бұрын

@@Matt-pt6rl Really? 343 fdny fire fighters died in the collapse of the towers. Why aren't they clamoring justice for their fallen brethren? Do you know something that they don't? Do you know more than them?

I also noticed that each time the building would fall to the next floor, there would be an explosion, at the corner of the building. At several levels 😮.🤨 a level there was an explosion in the floor right below it as it went down you could see the next floor at the corner of the building,

@mooneyes2k478

20 күн бұрын

So, in other words, your fairy tale was shown to be childrens fantasies and you got upset, and had to make something up.

I thought it was the B stairwell that was intact, not the A stairwell. I heard this from videos of actual survivors.

Merci pour cette excellente analyse et pour toutes ses explications

13:00 there were a few other factors too like the Empire State Building's facade being a limestone curtain wall with the structural support being the interior. Another was the bomber was trying to land after getting lost in the fog (this is what led to flashing lights at the top of buildings). Lastly, there wasn't anywhere near as much fuel on it to start anywhere near as large a fire. Empire State is also smaller as it goes up, so less weight on top than the equal sized floors of the World Trade Center.

@hiddenintheshadows530

2 ай бұрын

Explain the 52 story build that free fell with no plane hitting it or jet fuel?

@fehmeh6292

2 ай бұрын

​@@hiddenintheshadows530Tune in next week.

@shable1436

2 ай бұрын

Same as small houses being so old that the only thing holding them up is the layers of paint throughout the years

@o2benaz

2 ай бұрын

@@hiddenintheshadows530 WTF? Please at least TRY to use the English language when you post. I’d like to hear what you have to say, but I can’t read the gibberish.

@thatcarguy6190

2 ай бұрын

​@@o2benaz"Explain the 52 storey build that free fell with no plane hitting it or jet fuel" HOW are you having trouble with that?

Buckling is indeed unavoidable with a structure of this size, and the reason that extremely big structures almost always pancake rather than topple. The heavier the object, the more force it experiences through the acceleration of gravity. With extremely large buildings, this downwards pull overwhelms almost any sidewards momentum. In order to topple over, you need a pivot that can withstand the downwards force of the mass above it. But a falling mass of this magnitude will crush any potential pivot element and then continue to fall straight downwards.

@WasFakestCenturyAesthetics

25 күн бұрын

can you give me five examples of extremely large structures behaving that way?

@nikone4129

25 күн бұрын

The floors under it were not damaged by fire and would have not simply pancaked, the upper portion would have collapsed in and got stuck, or slid off. Multiple witnesses, including firefighters reported loud explosions, some before the building was hit by planes, and again right before it began to buckle.

@nikone4129

14 күн бұрын

@@dirkdiggler8260 What cartoon physics do you subscribe to that make the large steel center support collapse along with floors weakened by fire. Can you name any other buildings that fell into their own footprint at near free fall speed like that from fires? I'll wait...

@dirkdiggler8260

14 күн бұрын

@@nikone4129 No because there are no comparable buildings that had sustained a comparable attack. Those cores weren't free-standing so when the structure around them collapsed, they fell too. Familiarise yourself with the kind of structures the towers were & try to read the reports where it's all explained. No cartoon physics here pal, just REAL physics as accepted by the vast consensus of physicists as opposed to failed high-school teachers who don't know the difference between a static & a dynamic load, of which you have to rely on ie. David Chandler. Pretend to know more about physics than the actual physics community if you like, just don't expect anybody to take anything you say seriously.

good video! makes sense... the weight going down consistently increases due to the cumulative weight of every floor

The explanation as to the order of the in my mind is what I thought as to the reason of its occurring. More weight from more floors mean more pressure where the passenger jet’s crashed. And no the terrorists were NOT counting on the towers collapsing. As far as a conspiracy theories are concerned, all I have to do reject that notion is to play the role of a would be conspirator. It goes way beyond technically avoiding getting caught. Conspirators would have to avoid arousing the slightest of all suspicions that they would be up to no good. As far as George W. Bush being able to pull that off, him and his cabinet, and avoid arousing all suspicions, a failed business man who needed the Bin Laden family’s money to stay afloat?? Come on . Get real.

It should be noted that the composition of the fire-retardant coating on the steal beams was changed above floor 4 as the result of asbestos laws being enacted.

@TheMiddleClassholes

Ай бұрын

Source?

@danieledwards844

Ай бұрын

@@TheMiddleClassholes I worked with the people who built them and it was discussed at the office after 9/11. The information should be readily available since the asbestos was band across the country. Also the new material has slightly different properties, it was more brittle, this may have led to some of it breaking off at impact.

@TheMiddleClassholes

Ай бұрын

@@danieledwards844 So you're source is "trust me, bro". Got it.

@danieledwards844

Ай бұрын

@@TheMiddleClassholes Not if you are able to read, I just gave you time and event, it's up to you now buddy!

6:05 The viscoelastic dampers probably melted and let go. And the elastic material was almost 30 years old.

Great animation, forgot to mention the guy shown spraying the "insulation foam" was spraying Asbestos insulation, each tower contained approximately 300 ton of Asbestos, which was turned to dust when the towers fell dispersing Asbestos dust all over the city, the affects of this started to show in 2019 with cases of Mesothelioma rising, As of December 2020, 80,146 first responders enrolled in the WTC Health program to receive treatment for 9/11-related illness, sadly there will be hundreds of thousands of citizens who will also require treatment.

@bartdeking

2 ай бұрын

Know that the whole tower turned to dust. Not only the asbestos.

@Turdfergusen382

2 ай бұрын

Why were the towers dustified on the way down instead of instead of in giant floor sections and walls like a normal pancaking collapse? Why did everyone in the lobby and basement report bombs having gone off prior to the planes hitting?

@alejandroperez5368

2 ай бұрын

@@Turdfergusen382 Yeah, especially the core, just one tube standing there? ...

@psikeyhackr6914

2 ай бұрын

There were 100,000 tons of steel in each tower. Even without the insulation how hot could the core columns get in two hours? Where is the data on the tons of steel and tons of concrete on each level? Including the 6 basement levels.

@Turdfergusen382

2 ай бұрын

@@psikeyhackr6914 Well I’m not sure how…. But somehow hot enough to be molten metal in a pile at the bottom for three months after even though they were spraying water on it constantly….

I will never forget that awful day. The most shocking event I have ever seen. RIP to each and every victim who perished on the day and the firemen and emergency services who continue to suffer from the toxins they breathed in during the aftermath. 9/11 is a before and after event. The world as we knew it died that day also.

May the people who died in the WTC rest in peace. But anyone who believes this theory is not only blind, they are spitting in the face of every victim of 9/11 if they believe what is shown here.

Nice to see a British Rail class 89 at 13:58 - the only one ever built!

Rest in peace to all the lost beautiful souls.

I am a registered architect of 41 years, took basic structural engineering/physic courses in college, and worked on high-rise structures in my early years. A few questions. First, how did the perimeter trusses give way all at that the same time? Was the fire's heat evenly spread throughout the floor, unlike any other fire I've known of. If the truss perimeter connections gave way sequentially instead, the upper structure collapse would've come down rotationally, that is lopsidedly, not in one even downward thrust. Just think of a wood frame truss on a house and how a fire will bring down the trusses in portions. Second, the stair/elevator core was made up of a dense network of columns that was even tighter than the Empire State Building's layout. My professional sense is that that the core would've held up even with 15 floors coming down on it. That or resisted some of the collapse as it reached closer to ground level where the core columns would've been even thicker. What I think we should've seen is a collapsed outer shell with a good portion of the core still standing. Third, while the WTC Towers had a unique structural design from the 1970's, how is that no other high-rise has ever collapsed after being engulfed in flames. I understand the jet fuel burned out rather quickly and what fueled the rest of the fire was the office FF&E, and FF&E fuel has never brought a modern high-rise down. And separately, how did WTC 7, across the street from the falling Towers, collapse after only a few structural members hit it? I call B*ll d*ng and I mean no disrespect to the 3000 who lost their lives in this tragedy.

@brucelansberg5485

20 күн бұрын

_"I am a registered architect of 41 years, took basic structural engineering/physic courses in college, and worked on high-rise structures in my early years."_ Great. Let's see the arguments of a professional. Yet, I do not really care about anyone's alleged qualifications. I care about their arguments. _"First, how did the perimeter trusses give way all at that the same time?"_ Perimeter trusses? What on earth are you talking about? _"If the truss perimeter connections gave way sequentially instead, the upper structure collapse would've come down rotationally"_ You might want to explain that bit in a little more detail. What kind of force would have made the upper structure rotate in a few seconds and why? _"Just think of a wood frame truss on a house and how a fire will bring down the trusses in portions. "_ Now add a 12-28 story building on top of those trusses and see what happens. _"Second, the stair/elevator core was made up of a dense network of columns that was even tighter than the Empire State Building's layout. My professional sense is that that the core would've held up even with 15 floors coming down on it. That or resisted some of the collapse as it reached closer to ground level where the core columns would've been even thicker."_ This quote alone shows how you have no idea of the engineering of the towers or the collapse sequence at all. Why would the thickness of the columns be relevant to the way the towers collapsed? Didn't you mention the floor-to-column connections before? Also, there may have been many core columns. But how were those a network? You know they weren't cross braced? You know the core depended on the tight floor connections for its lateral stability? _"What I think we should've seen is a collapsed outer shell with a good portion of the core still standing."_ That makes sense. And that is exactly what we have seen in every video of the collapses. Now add the lateral instability of a free standing core and voila. _"Third, while the WTC Towers had a unique structural design from the 1970's, how is that no other high-rise has ever collapsed after being engulfed in flames. I understand the jet fuel burned out rather quickly and what fueled the rest of the fire was the office FF&E, and FF&E fuel has never brought a modern high-rise down. "_ DO you really understand the design of the towers? Find me one single example of a comparable high rise that suffered the same kind of damage please. _"the office FF&E, and FF&E fuel has never brought a modern high-rise down."_ You might want to do some research before you make such a claim. Yet, how relevant would it be if the engineering and damage would not be comparable? _"how did WTC 7, across the street from the falling Towers, collapse after only a few structural members hit it?"_ Ah, you forgot the "burning" part. And do you think "a few structural members" would be an adequate description of what happened? Did you forget about the uncontrolled fires over 8 floors? You, being a "registered architect for over 41 years". of course have read NIST NCSTAR 1a, right? The report that deals with the collapse sequence of WTC 7.

@dmitripogosian5084

19 күн бұрын

Funny thing, I just replaced a wooden 4x4 support column by the metal one, and the construction guy was telling me how metal trusses (and columns) are less fire resistant than wooden ones. Wood starts burning at relatively low temperature, but it maintains its rigidity as it burns, so it has to burn through significantly to collapse, while steel softens much below its melting temperature, at around 600 C, and once you heat it up, it sags.

@ikueconsultingco.ltd.4728

19 күн бұрын

f you take the entiere quatity of the material used for those buldings and the poor amount left on the ground, you will understand the truth. It can't never be this low amount of trash (debris). So i belive at the Theory of some poples about the first time when they start to build. It was stipulated by the building authority that in the event that the buildings had to be removed at some point, there would be a plan without damaging the neighboring buildings. Some people say that small nuclear explosive devices were integrated into the construction, which also explained the pulverization.

@YouTubeSucks12328

19 күн бұрын

1. The perimeter columns didn't all give way at the same time. Euler buckling failure occurred on one side of each tower, followed shortly after by the opposite columns failing in tension rather than compression. Seems obvious enough just looking at it. 2. The core did hold up - for a while. Cores were the last component of both towers to fail. Again this is obvious enough watching the collapses. But the cores were part of the integrated system that made up the Twin Towers and quite incapable of remaining standing on their own AND of course the collapse process heavily damaged the cores, primarily through beam strip down. 3. Not true. I can name several. Also, _first time in history_ or _only time in history_ (either way) are obvious logical fallacies. And don't forget the physical damage from the aircraft impacts. This is where so many people lose the plot; single-element (non)thinking. Twin Towers collapses required four primary elements; Impact Damage _ Fire + Time + Gravity = collapse. Invariably though these discussions become _Impact Damage_ *OR* _Fire_ while Time and Gravity never even come up. You have to factor in all four elements. 4. Hit by *thousands of tons of burning debris* and burned out of control on at least a dozen or more floors with no fire fighting for several hours. If you are what you claim to be your question should be _How did it last so long_ not _why did it collapse_

It makes me wonder how much of this was known prior to the event. The beams in the center, the kangaroo cranes, and the foam spray are really fascinating!

@pacman3556

Ай бұрын

wtf are you babbling on about?

@CantTellYou

Ай бұрын

@@pacman3556 Did you watch the video? Those are all things listed as part of original construction of the towers, and they’re curious if this was publicly known before 9/11 or if it’s only become widespread information after the attack.

@jayshreded3877

Ай бұрын

@@CantTellYouhe just wanted to use his newly learned word babbling

11:00 There is more than one new world trade center tower! You should have included the other buildings in the complex in your animation.

Short but well explained video on the structural failures of the tiwn towers, Thanks!

Really useful video. One thing I would like to understand is the lack of resistance from the lower floors in the collapse in terms of how quickly it collapsed. Even if each floor provided a little bit of resistance, why did it fall through like glass, surely 80 floors would make it fall down for longer than it did? Is it just the sheer weight at the top?

@YouTubeSucks12328

11 күн бұрын

Finally, a serious question. And a good one too. This is genuinely exciting. 👍 OK, so collapse initiates and thousands of tons of debris is falling within the four outer walls, through the open office space. With the exception of a couple of mechanical floors each of the floors is of identical design and construction and only intended to carry the gravity loads normally found on that floor - furniture, equipment and people. As soon as that falling mass hits the first floor those 5/8" bolts that attach the floor trusses are going to shear, the floor will break away and join the mass of falling debris free falling another 12 feet to the next floor where the process repeats. Remember, this is one floor at a time. Too many people get hung up on false _block dynamics_ mechanisms of _20 floors can't crush 80 floors_ when it would be more accurate to say 20 floors fail one floor, then 21 floors fail one floor, then 22 floors fail one floor, etc_ It is a progression, not one action. As this progression continues the mass of falling debris increases and its speed increases - each subsequent floor fails just a bit more quickly, slowing down the momentum a little less each time - therefore its energy increases while the (minimal) resistance offered by each subsequent floor is always a constant. This process can _only speed up_ as it progresses. While the floor failure progression starts out somewhat slowly it accelerates to the point it eventually is close to free fall - the average for the whole process being 65% of free fall. Total collapse times for the towers were 31 and 34 seconds respectively, which is exactly what it should have been.

@mooneyes2k478

11 күн бұрын

@@lBadBoy1l "hat you just said is just not possible according to Newtons third law" Here's a hint: when you literally do not understand the FIRST PART of what Newtons laws of motion mean? Don't try to use them as an argument. Yes, yes, I know, you can ape what it says. You clearly do not understand what the words mean.

Please add the explanation for the third tower! Thanks

@pacman3556

Ай бұрын

Why would you expect to see an explanation of the third tower on a video clearly about the twin towers? You just cannot make up this level of $tupidity. If you want to learn how to fix your car do you go to videos about how to cook a roast in a crock pot?? Maybe learn what that thing at the top of your screen called a search bar is used for. And if that is still too difficult for you then try reading the pinned comment.

Your descriptions of the conditions and phenomena are some of the best, most sensible explanations I've heard to date. Unfortunately, I must take issue with some of your animations which show the buildings collapsing in a manner that resembles sinking into a pile of rubble that originates from the base of the building. While the "they collapsed like a controlled demolition" crowd may be quite pleased with our animations, I would suggest a revised edition with the collapse accurately portrayed. As you explained, the buildings began to collapse at about the impact site, with the floors above that point falling as one large mass onto the floors below, causing each floor to rapidly collapse, one after the other all the way down. Otherwise, the information presented seems good. I hadn't heard any mention of how the floors were attached to the structure, or the effects the sagging floors would have had on the outer support structure prior to this video. Looking forward to your WTC7 video.

@TheMiddleClassholes

19 күн бұрын

Limitations of the animation software.

It was so devastating that I thought 3 floors from the Marriott we all have seen survived the collapse and still was intact but when I found out that was almost 7-10 floors melted into eachother really got to me because I just hope families of the victims are able to heal themselves because that's a hard pill to swallow

@xraylife

Ай бұрын

Melted because of the sun like temperatures from the lattice confinement FUSION nuke.

@REBECCA12341

Ай бұрын

​@@xraylifesuicide not allowed

@REBECCA12341

Ай бұрын

Suicide not allowed

@nope4428

Ай бұрын

You really need to learn how to use periods and commas. 😑

Excellent explanation. This video should instantly be linked to any conspiracy nut when when peddling their insane "controlled demolition" theory. As an engineer, I've tried to explain this to so many people, but you can only do so much without an effective visual aid. This video will be the first think I show someone going forward. Thank you, and keep up the good work.

@MennilTossFlykune

28 күн бұрын

as an "engineer", how do you explain the dancing israelis?

@gtaclevelandcity

28 күн бұрын

@@MennilTossFlykune how does that conspiracy theory have anything in the slightest to do with the physics behind how and why the towers fell?

@YouTubeSucks12328

28 күн бұрын

@@MennilTossFlykune - No need to explain myths.

@MennilTossFlykune

28 күн бұрын

@@KZreadSucks12328 what were they celebrating?

@YouTubeSucks12328

28 күн бұрын

@@MennilTossFlykune - I genuinely have no idea what you are talking about but it sure seems to have nothing to do with the subject of this thread.

That's a great presentation. I do have a problem however with the soda can 'experiment'. Let's say due to bending of the steel beams suddenly it lost support for so many floors (it would be more gradually), the weight you push on the can does in no way reflect what happened to these buildings. Thats like 1000 times its weight.

@YouTubeSucks12328

Ай бұрын

I would say then you missed the point of the demonstration. The pristine can (representing a column) can hold 4,000 times its own weight. If you bend a column (or can) its ability to support a load drops off dramatically - by up to a factor of 4. The demonstration illustrates how bent columns are weaker than straight ones. Now watch the Gary Pollard video linked in the description, particularly the first 12 seconds. Your other post contains numerous factual errors and an obvious logical fallacy. We can address that later. First off, what do you see in the Pollard video?

@vlaminggarrulus4785

Ай бұрын

@@KZreadSucks12328 You're hilarious 😂

@YouTubeSucks12328

Ай бұрын

@@vlaminggarrulus4785 - And you are being deliberately evasive. Do let us know if you ever decide to and more importantly ever become capable of being serious.

@_BenJaminCroft_

Ай бұрын

​​@KZreadSucks12328 A smaller, lighter, weaker stationary object (soda can), under larger, heavier, stronger stationary objects (3 micro processors). The exact *_opposite_* loads of the Twin Towers. Notice that the 3 micro processors didn't *_"crush-up"_* after *_"crushing down"_* on the soda can by gravity alone? Curiouser and curiouser, don't you think? 🤔

@vlaminggarrulus4785

Ай бұрын

@@KZreadSucks12328 I have seen the Pollard video. It SEEMS the outer walls did give in on one side and seemingly this is how the towers collapsed, but is that really happening? The separated upper part should have toppled off when it was tilting which can be seen in the video. Though it doesn't, it gets corrected right away to fall perfectly vertically in its own footprint. From the perspective from the front you will see the first thing which is coming down is the antenna, so the section at the very top of the building. In another video when one of the towers is down you will see remaining standing vertical beams which EVAPORATE in a few seconds: turn into dust. You go on and deny everything calling it whatever to suit your flawed theory.

Great and informative video 👍

So based on all this? I have a theory that some passengers and hijackers on Flight 11 did not die instantly. I think they survived the impact for a while and died after a few minutes due to the fire, but I imagine they were very injured given the speed of the impact. Unlike Flight 175, the explosion there was instantaneous.

@pacman3556

Ай бұрын

your theory seems extremely unlikely. The plane was going 500mph and broke apart in to thousands of little pieces on impact. If the plane was destroyed it is highly unlikely a human body would have withstood the impact

@norepresentative2491

Ай бұрын

@@pacman3556 But passport of just the hijacker made it. Thank God. 😂 Mentally ill conspiracy theorist

@pacman3556

Ай бұрын

@@norepresentative2491 yes the passport was thrown clear. Lots of material was thrown clear including people's IDs...why do you ignore it all and focus only on a passport? How does a passport prove a demo? Yes you are a mentally ill conspiracy theorist.