The Structural Physics of the 9_11 Collapse 🏗️ _

This is a lie.. I’m a structural engineer student..

This is absolute nonsense. That plane would’ve buckled upon hitting that building. Look up bird strike on the nose cone of an airplane.

Cool animation bro. Too bad its a bunch of bullshit.

The building collapsed due to the detonation of several bombs planted inside it.

I’m an expert in physics of structures so trust me bro, Israel did not demolish WTC on 911.

yeahhhh right

Now do Building 7

Never forget building #7 and the Zionist false flag that ended up murdering genociding 1m afghanis and 1m Iraqis.

Ridiculous

Lets look at the real reason what happened...

That's such a long way to say they had controlled demolishing bombs.

Stop spreading nonsense. Jet fuel didn't melt the structural steel of the Twin Towers. Aluminum-made planes cannot just disappear into a skyscraper built of forged steel and concrete like a hot knife into butter. Research Pinocchio's Nose. There were no planes. ✈️ ❌✈️❌

Propaganda For Dummies - This is Counter Propaganda to derail the substantiated truth which is based on overwhelming evidence. This was the original narrative they push across all mainstream media. It is so upsurd.

The scam is clearly visible at this very point:

The fuel exploded and was spent on impact, thus no remaining fuel. It was a fire retardant building with all the asbestos present in the structure. There wasn't enough fire throughout so intense to weaken the steel. Thermite was used which is what caused the molten steel.

Interesting. Cool story, except, its all BS. This is propaganda. If you beleive any of this, you are a fool.

There still trying to sell us a plane hit the towers when infact it was bombs that blew it up don't fall for there jfk conspiracy

Well it took him a long time to come up with this we know those towers came down from demolition so now they making a video trying to say that jet fuel can melt those still beams which is bullshit. This video is only a cover-up

And what about building 7? 😆 not today.. CIA

Yes, and this was transmitted telepathically to the third tower, which collapsed on the second day, not because the plan failed, but because someone, or rather someone else, forgot their turn.

Bullshit .. those columns were fully concrete covered .. collapsing would have been impossible

Absolute garbage created by sellout scientists and a propaganda machine!

First time in history that 3 buildings collapsed in free fall speed due to fire. Building 7 is the dead giveaway that explosions were pre planted and detonated, along with thermite residue, along with eye witness accounts of detonated charges going off prior to and during the collapse. Try again

Passengers brought down the third plane meant for building 7, yet still the building fell free fall.

Insane that you’re still pushing this bullshit. Nothing but fantasy.

There are 1000s of engineers and scientists that disagree.

**The video closely tracks the established structural engineering explanation for the Twin Towers’ collapses, drawing directly from NIST’s multi-year investigation rather than inventing a novel theory.** NIST’s final reports (NCSTAR 1 and supporting volumes) concluded that the aircraft impacts severed perimeter and core columns, stripped fireproofing from steel floor trusses and columns across multiple floors, and spread jet fuel that ignited large, multi-floor office fires. Those fires reached temperatures high enough (air temperatures up to ~1,000 °C) to weaken the unprotected steel significantly—steel loses roughly half its strength by ~600 °C and far more under prolonged heating plus creep—without ever melting it (melting point ~1,500 °C). The critical mechanism was thermal buckling of the diagonal web members in the lightweight floor trusses. Once those diagonals buckled, the floors lost stiffness, sagged into a catenary-like shape, and exerted large inward pull forces on the perimeter columns. NIST’s thermal-structural models showed floor vertical displacements reaching nearly 50 inches (49 inches in one documented case for Floor 98 under realistic fire scenarios) and observed inward bowing of exterior walls reaching amplitudes of approximately 55 inches. The video’s “fifty inches” and “trusses sagged” language therefore matches the quantitative results of those analyses. The sagging and bowing progressed until a section of the exterior wall failed, the upper block began to tip and descend, and the dynamic overload triggered progressive collapse of the floors below. “Explosive impact” in the animation is simply descriptive of the high-speed kinetic energy release (aircraft mass × velocity²/2); it is not a claim of planted explosives. The subsequent progressive failure is what produces the rapid, near-symmetrical descent once initiation occurs: each successive floor is subjected to the falling mass of everything above it plus dynamic amplification factors well beyond static design loads. NIST deliberately focused its detailed modeling on the initiation sequence because that is the scientifically decisive step; once the upper section is in free motion onto the damaged structure, global collapse is the expected outcome under elementary dynamics. Common objections raised in the replies—and in broader online discussion—include claims that an aluminum airframe should have “buckled” harmlessly, that the fires were too short or cool, or that the visual similarity to controlled demolitions proves explosives. These do not hold up under the engineering evidence: - Aircraft are designed to crumple and dissipate energy; the towers’ exterior tube and core still redistributed loads after the impacts and would have remained standing without the loss of fireproofing and the ensuing multi-floor fires. - Fire tests and thermal models confirmed that unprotected trusses reach critical temperatures and sag within the observed time frames (roughly 56–102 minutes). - No forensic, seismic, or photographic evidence supports the presence of demolition charges timed to the impact zones. Independent structural analyses and the absence of characteristic explosive signatures reinforce the fire-induced progressive-collapse sequence. The video is a simplified 3-D visualization of this physics, not a peer-reviewed paper, so it compresses details and uses dramatic framing. Its core sequence, however—plane collision, loss of insulation, truss heating and sagging on the order of tens of inches, inward wall bowing, and progressive structural failure—is consistent with the NIST findings and the broader consensus in structural fire engineering. High engagement and skeptical replies reflect the enduring emotional charge of the event and the intuitive difficulty many people have accepting that ordinary office fires, once fireproofing is stripped, can bring down a steel high-rise. The physics does not require extraordinary additional mechanisms.