WTC south tower sway 8x speed

Sway of entire building structure extremely evident with this fixed camera footage. Speed is 8x original to illustrate the swaying more clearly.

[djm]

Brian Clark, a 9/11 survivor said people may think he's lying but he said it felt as if the building swayed 8ft. He also said when the building swayed back into place the beams were screeching.

[slamin]

A good friend was in that building at that time, he said the building shock so hard, he thought it would collapse right away

[leokimvideo]

If it didn't sway it would have snapped

[SonicandShadowSPX]

These skyscrapers were more resilient than some people think. The fact that they withstood the impact of large commercial planes for about an hour (over an hour for the North Tower) is amazing!

[noahdavidson]

I had never been able to see that sway everyone talked about until I found this video. Puts the raw energy of the impact into a greater perspective for me. Thank you for this.

[DwightLivesMatter]

For a massive skyscraper that was built decades before this tragic event, these are the most resilient towers.

[animalloverjulian]

The south tower took the hardest blow from the plane out of both of the towers, it was hit faster and further down than the north tower. The south tower’s steel support columns held the top 30 stories of the building up for an impressively long time given the circumstances and how much weight was above the impact comparing to the north tower.

[mikeb]

about 23 seconds of sway time after the impact in this sped up video, 8 x 23 = 184 seconds real time, so that means the building was still swaying for 3 MINUTES after impact, incredible.

[isrulius]

Holy crap. I always heard about the people inside saying it swayed but this is the first time I have ever been able to physically see it. That had to have been absolutely traumatizing. Think of all the experiences inside the towers that day that we will never hear about.

[xCmOnyx]

the sway is part of the reason it lasted as long as it did, giving people a chance to escape; great engineering: so 30, 000 didn't die compared to 3, 000

[happymaskedguy]

The suffering that went on those towers is absolutely horrifying.

[davidmcc]

Yamasaki might have designed it, but it was Leslie Robertson who engineered the towers and the wee man made a damned good job too, despite the media looking to afford blame other than at the filth who carried this out. The media, in my opinion, hounded the man with carefully crafted interviews, seeking some flaw or issue they could capitalise on. Offering such insightful questions, decades after the towers were built, such as, "Was the towers designed to take the impact of a plane larger than the Boeing 707", almost suggesting Robertson should've imagined the likes of the modern airliners of today as opposed to almost 3 decades earlier. Robertson, in my opinion, engineered these leviathans with extrordinary reslience, given the task laid by Yamasaki, but I feel the man was haunted to his dying day by the false doubts shoved into his head by despicable reporters eager to point the finger, other than at the perpetrators..

[derekboom]

I cannot get over how much the South Tower swayed. Being sped up like this really puts into perspective of how those poor people probably thought they were going over at that very moment. Incredibly sad...😢

[Neverforget-bgnb]

The tower was designed to sway 3 feet, 6-8 feet was exceeding the limit. Notice how the top portion of the tower leans during collapse, the sway had a lot to do with why that top portion wanted to fall on its side, the structure was strong enough to keep the tower from falling over

[wwiiinplastic]

When the second plane hit I was standing in front of the Millennium Hotel with some coworkers looking up at the first tower. We had just evacuated our store, Borders Books #142, which was in Building 5 right on the corner of Church and Vesey. I will never forget what the blast felt like even at the distance I was from it.

[aegonthedragon]

The fact that these buildings took a hit from a plane that didn’t even exist when they were first built with the opposite imagined crashed circumstances and survived shows just how well built they were. The design wasn’t flawed, it was brilliant.

[hugolafhugolaf]

Wow, it really swayed for a long time. The amount of kinetic energy being displaced must be insane.

[JohnSmith-wjwd]

In the book "City in the Sky" is a very interesting chapter where it mentions how a woman was called into an interview at a small office. During the interview she started feeling nauseous and had to leave. It turned out that the whole room was on wheels and gently swayed back and forth to mimick the expected sway of the towers, unknowingly to the interviewees. They were studying how people would react to working at such heights in severe weather conditions, and eventually prompted the engineers to add dampeners between the floor trusses and collums/facade to counter the effect.

All in all it's a very interesting read to see what challenges were faced during the construction of this complex. Despite the engineering mistakes, not enough credit is given to how strong these buildings were made to survive for as long as they did. They were designed to withstand the impact of a jumbo jet, which they perfectly did as seen here, at a faster cruising speed even. Unfortunately they never took the subsequent blaze properly into account.

[ek]

It is truly amazing engineering that allowed these 2 buildings to remain standing as long as they did. This video is a perfect record of the types of stresses these buildings had to absorb on that horrible day.

[TheHuskyGT]

The fact that it did not collapse by impact alone is really impressive