วีดีโอ

Ellos realmente eran!

@@3dcasuallearning Eran!

Thanks so much for the feedback! My narration may have been a bit unclear on that point. I appreciate you catching it, and I’ll make sure to clarify that detail more accurately in future videos!

Much appreciated!

The typical floor-to-ceiling height in the World Trade Center was around 8.5 feet, which was common for office buildings at that time. While it may feel low by today's standards, it was designed to fit within the structural limits and design goals of the era.

@@3dcasuallearning 8.5ft is a typical ceiling height. Today, tomorrow, always. The building was designed with those ceiling heights to maximize space which maximized leasable area which maximized profits.

Thank you for sharing such detailed insights. You bring up some important points about the design and building code changes made during the construction of the World Trade Center. The complex balance between cost, safety, and innovation during such a monumental project certainly shaped its legacy in both positive and controversial ways. The fireproofing, stairwells, and core structure have been key topics of discussion, especially after 9/11. These are complicated issues, and I appreciate you bringing them into the conversation for a deeper understanding of the decisions made. If you have more info or sources on this, I’d love to dive deeper into it in future content.

Thank you so much for your kind words and support! It really means a lot to hear that the hard work is appreciated. Sending a big shoutout to Pittsburgh, Pennsylvania!

Thank you so much! I’m really glad you enjoyed the video. Shoutout to Pittsburgh, Pennsylvania! Your support means a lot-thanks for watching!

That’s an awesome story! Thanks for sharing your experience....it's incredible to hear firsthand how much the building would move at those heights! Must have been quite the challenge!

Thanks!

Thanks for your question! If your kettle is turning off too quickly, it could be due to a faulty thermostat or a buildup of limescale on the heating element, which affects temperature detection. However, I wouldn’t recommend removing the thermostat entirely, as it’s a crucial safety feature that prevents overheating. Instead, you might want to check the manufacturer’s manual or consult a professional for a possible repair or replacement. Regular descaling could also help with this issue. Hope that helps!

Ground Zero refers to the site directly where a significant event occurred, like a disaster or explosion. In the case of 9/11, it’s the area where the World Trade Center towers stood before they collapsed.

@@3dcasuallearning substitution of concepts

@@3dcasuallearning the introduction of a new term to justify the original truthful meaning

@@3dcasuallearning the introduction of a new term to justify the original truthful name

Thank you so much! 🙏 I’m really glad you enjoyed the video and animation. Your support means a lot! 😊"

Thanks for sharing your perspective! The collapse of the towers has been widely studied, and I encourage looking into the engineering reports for more detailed explanations of how it all happened.

@@3dcasuallearning Widely studied by who? The government that did it? I encourage you to read government conspiracies like Operation Northwoods,and for media complicity Operation Mockingbird also study bld 7 that was a completely different structural configuration not hit by anything yet fell by fire after the owner said “pull it”

Oh shut up

Este video es la prueba reina de como los incendios se concentraron en los asbestos por eso se ven esas estelas de humo en el cielo una demolicion controlada no deja todo ese humo en el cielo muy triste lo que mas me impresiono fue cuando supe que la pelicula infierno en la torre 1974 era un libro escrito para gacerle un homenaje a las torres gemelas la pelicula la mire en 1986 muy premonitorio lo que le dice steve mc queen a paul newman ojala una de estas malditas trampas no maten a unas 10000 personas y sucedio en las torres gemelas el incendio en la pelicula es provocado por un corto circuito los incendios del word trade center se concentraron en los asbestos tubos de ventilacion y computadores avivados por el aire y los cortos circuitos no tiene ningun misterio h ciencia entender lo que sucedio ese dia nadie imaginaba que todos esos incendios este video esta explicado todo jimmy hernandez😮😮😮

​@@joedoe-sedoe7977There have been independent investigations of the collapses, minus the NIST. Building 7 was hit by debris from the collapse of the north tower. The owner saying pull it, in the context of his his quote means nothing. Unless you think the fire department was in on the plot.

Entschuldigung dafür! Ich werde versuchen, die Textplatzierung in zukünftigen Videos zu verbessern. Was Ihre Frage betrifft, ja, leider haben mehrere Arbeiter während des Baus des World Trade Centers ihr Leben verloren. Die Sicherheitsstandards verbesserten sich zu dieser Zeit, aber es war immer noch ein gefährlicher Job.

@@3dcasuallearning schon gut, ich hatte dadurch schon die Vermutung das beim Bau schon leben verloren ging. Das erinnert mich an die Titanic. Bei deren Bau starben auch schon so einige. Ich hab mich eh gefragt wie es nur möglich war diese enorm hohen Wolkenkratzer zu bauen. Ich war 6 Jahre alt als sie zerstört wurden zusammen mit so vielen Leben. Unglaublich was der Mensch alles erschaffen aber zur gleichen Zeit wiederum zerstören kann.

Thanks!

8:05 The Twin Towers actually did have concrete floor slabs supported by steel trusses. During the collapse, the combination of the concrete crushing, drywall, and other building materials created a huge amount of dust. There’s been a lot of research and investigations into the collapse, and while theories like thermite have been discussed, official reports concluded that the intense fires and structural damage from the plane impacts led to the towers' collapse.

Another toilet seat expert

@nicathsimov7624, you are a sadly misinformed individual. Each floor consisted of 4 inches of concrete on metal decking supported by flimsy trusses. That adds up to almost 110 acres of 4" thick concrete in each tower.

Thanks for sharing your thoughts! Interesting point about the spandrel steel dimensions.

@@3dcasuallearning > FEMA 403_ch-2 has correct data on Twin Towers construction > "Breathtaking: Solving Nuclear 9/11" at Veterans Today has correct WTC destruction, 45 power point slides, three 90 min videos

It was common knowledge in the intelligence community that the WTC towers were designed with the nuclear demolition scheme in place as a precondition of getting the building permit from the city.

Unfortunately, the fireproofing in the WTC wasn’t as effective as hoped, especially with the impact and heat from the crashes. It’s a tragic reminder of how critical safety advancements are in construction.

The open-space design was definitely innovative but came with its challenges. Glad you enjoyed the animation and explanation!

Thanks for the feedback! I'll keep that in mind for future videos and work on improving the audio. Appreciate you watching!

Great point! Thanks for the suggestion-I'll keep that in mind for future videos!

Thanks for sharing that detailed info!

True, the construction story shifted after 9/11, but the rebuilding of the new World Trade Center still carries a powerful message of resilience and renewal.

Thanks for your detailed comment! The unique design of the World Trade Center, particularly the tube-frame structure, was very different from buildings like the Empire State Building or the Chrysler Building. The WTC used a perimeter column design that supported much of the load, allowing for the large, open floor plans inside-something revolutionary at the time. While this design made the towers cost-efficient and flexible, it also behaved differently under extreme circumstances, such as the events of 9/11. Other skyscrapers, like the Empire State Building, use more traditional construction methods with denser central cores and more distributed structural elements. This might lead to different failure mechanisms in extreme scenarios. Structural analysis was certainly part of the original planning, but no design could have anticipated the impact and subsequent fires in the way they happened. It's a complex topic, but I appreciate your thoughtful input on the differences between these iconic buildings!

There is a long answer here, so bear with me. KSM, Bin Laden, and maybe some other al Qaeda people had the “planes operation” as an idea for many years. But of course, they needed the right people to do it. And it wasn’t until Haburg cell members came into the picture that the idea was given to them to carry out. But I believe it was Bin Laden who was adamant that one of the targets was the WTC. They wanted to kill a lot of people, but it also symbolized American capitalism. They did like you said have a larger plan originally with like nine planes, and some of the targets were even nuclear power plants, but it’s said that Bin Laden nixed that idea because “it could get too messy”. And I’m just guessing the idea of nine hijacked planes was lowered just because it wasn’t easy to find men that could speak English, get a US visa, smart enough to take pilot lessons and learn to fly, blend in long enough that they didn’t attract any attention, among other issues. One of their guys already kept being denied entry so they had to replace him with Hani Hanjour. If they tried to go beyond the four, they went with there was a real risk of it being thwarted. It was already known al Qaeda was determined to attack inside the US, intelligence just couldn’t pinpoint when, where and how. Bin Laden, none of them when selecting targets looked at the structural integrity of the building, or at least probably in the detail like you are thinking. The first WTC bombing, the idea was to put a bomb next to a column in the parking garage under the tower, detonate it, and make that tower tip over and fall into the other tower, but none of the terrorists expected in a million years that the towers would fully collapse as they did on 9/11. So, to answer your question, no that would not of been the reason why they wound back the bigger plot. The main reasons being what I mentioned before. I believe when Bin Laden and the upper echelon of Al Quida saw both towers collapse, I’m sure at first, they were elated, but then I think a few of them started to realize they had hit a nerve in Americans and that was going to be the beginning of the end for many of them. It was one thing to attack US embassies overseas. Most Americans were, and still are oblivious to anything going on outside of our country. But when the towers collapsed, that was a whole new ball game. Had they just been hit with planes and stayed up, I think it still would have been an extremely monumental event that changed a lot of things in this country and the world, but because they did, everything changed since. Now I’m not a structural engineer, but I play one on TH-cam. I know the buildings were designed to be extremely lightweight, they won awards for it the year they were built. But I think if they utilized concrete more, encasing floor trusses, or just not using floor trusses at all and using structural steel to span from the perimeter walls to the core columns, still encasing them in concrete, that could have possibly made a difference.

Haha, I see what you mean! 😄 Glad you stuck around though! I’ll keep that in mind for future intros-thanks for the feedback!

Thank you so much, Rafay! 😊 Doing TH-cam is definitely hard work, and I really appreciate your kind words! I never really aim for a huge number of subscribers-I just focus on improving my videos so they can bring more value to viewers like you. I’ll keep your name in mind, and if I ever hit 100k, I’d be happy to give you a shoutout! Thanks again for your support, it means a lot!

@@3dcasuallearning may you succeed soon✨

Thank you for your comment. New York has certainly seen its share of triumphs and tragedies, and the history of the World Trade Center is a powerful reminder of both.

Glad it was helpful!

Thank you so much! There’s so much history and innovation in the construction of the towers, and I’m glad I could bring that to light for a new generation of viewers!

Exactly! 😄 Every penny counts when it's spent on something worthwhile! Thanks for stopping by!

Sounds like your Nana is making sure you stay safe!

Of course! 😄 I'll never forget the early supporters like you! Thanks for being part of the journey!

Thank you so much!

@@mrandrossguy9871 which one

Thanks for watching! 😊 The other mechanical floors are actually mentioned at 5:35 if you want to revisit that part. Let me know if there’s anything specific you’d like more info on!

@@Siddu457 I mean there’s like 4 mechanical floors one at the bottom two in the middle and a nother at top

Oh yah​@@mrandrossguy9871

@@3dcasuallearning perhaps more detail information needed, that gave the two towers the famous visible "band"... at first i thought it's the sky lobby because it gave the sense there were two open wide floors just like the main lobby.. but later i was corrected that it was the mechanical floors, and it didn't featured windows like other floors.. but appreciate your video, because as english is not my first language, i did find hard to find the definiition of "slurry walls", and your video explains it better...

Thank you for sharing your thoughts. Rebuilding after a tragedy sparked many emotions and viewpoints, and ultimately, the decision to create the new WTC was seen by many as a tribute to resilience and remembrance. While the new design is different, it was shaped to honor those we lost and to serve as a symbol of renewal for New York City and beyond.

@@3dcasuallearning And it does a terrible job as it tries to make you forget the Original Center and its Symbolism and Purpose, therefore disrespecting the fallen and that SHOULD be on Everyone’s mind. Thank you for replying.

While it may feel different to many, it was intended to be a space for reflection, unity, and moving forward. It’s always important to remember the original towers’ significance, and your comment is a great reminder of that.

@@mrandrossguy9871Don’t forget about the fountains of where the 2 towers used to be. The fountains of the two towers honor people who have died in the collapse, even stating their names. So, they did NOT do a terrible job.

@@3dcasuallearningI think it’s very controversial, but if they weren’t going to rebuild the towers exactly as they stood but taller, I am relatively happy with the current design. Riding down the West Side Highway Bikepath and seeing Freedom tower is always beautiful. Even if I was not able to witness the original towers in the skyline. Thank you for the very informative video.

Thanks!

Wow! Your momma must be proud🎉

As you wish Thanks for commenting!

Thanks so much! I’m glad you found the video helpful! Great question-while the video may not have shown it in detail, the main entrances to the towers were located on the ground level, through large revolving doors and glass entrances at the plaza level. People would enter through these doors into the lobby areas, which were spacious and had direct access to elevators. The World Trade Center had multiple entrances, including ones from the underground concourse that connected to the subway and PATH trains, making it easily accessible for thousands of workers and visitors every day.

You're welcome

Thanks for your comment! The designers of the World Trade Center actually used a revolutionary approach called the 'tube-frame structure', which allowed the towers to remain open and flexible inside. Instead of using central columns throughout the floors, they placed most of the structural support in the perimeter columns and the core, which housed elevators and utilities. This gave tenants large, open floor plans without many internal columns, which was a big advantage for businesses. It was a balance between structural integrity and maximizing usable space, which was cutting-edge at the time. Your suggestion could have added support but would have changed the flexibility and open design that was part of the building’s unique appeal.

@@3dcasuallearning but it may have prevented the buildings from collapsing on 9-11.

I always thought 4 extra core columns on the 4 corners with a stairwell built in between each one would of saved hundreds more lives that day and wouldn't have compromised that much on space and added more support for the structure. But I'm no structural engineer...

The problem wasn't the lack of columns on the open space. The problem was that the floor trusses joints gave way when under high temperatures, the fire, the weight of additional floors and planes started a chain reaction. If it had been a bomb instead of a plane they wouldn't have collapsed. The problem was the the trusses under heavy load and the fire.

@@0neoyou’re saying the Weight of the Planes that were STILL Inside the buildings/of course Mangled, Added to the Structural failure !?

Gracias por su feedback; realmente lo aprecio.

Gracias por dejar un comentario tan sincero. Tus palabras me inspiran para seguir adelante.

Thanks a lot 😊

😁That's why the model is here. I will tag you when it is published.