The Collapse of WTC | Solving All the Mysteries

Cheers Sabin Mathew

[PsychoCrnivore]

Lead is softer than steel and aluminum but if you shoot a lead bullet out of a gun it can punch through both steel and aluminum. Speed matters

[keithb]

Now I see why Melissa Doi, who was on the 83rd floor of the South Tower, was not identified until 3 years after the collapse. While Kevin Cosgrove, who was on the 105th floor, was found just a few days later.

[SJR_Media_Group]

*_911 Flight 175 Passengers in back of plane Perspectives:_*

Flight 175 impacted Tower at 590 mph = 865.33 feet per second
Tower is 208 x 208 feet in dimension
Boeing 767 = 159 feet long
Brain reaction time = 150 ms (milliseconds)
Human Eye = 30 frames per second = .033 seconds per frame = 33 ms

Time for plane debris to reach backside of Tower = 208 feet / 865.33 fps = .24 second less than quarter second

Back of plane entered Tower = 159 feet / 865.33 fps = .18 second after front of plane (180 milliseconds)

Passengers in back of plane were barely aware plane hit tower before they were dead = 180ms - 150ms brain reaction time = 30ms

33 ms time after front hit / 30 ms eye frame rate = 33/30 = 1.1 frames before passengers dead

150 ms brain reaction time / 33 ms for back of plane to enter Tower = 150ms / 33ms = 4.5 time longer for brain to comprehend

*_150 ms – 33ms = 117ms = Passengers were already dead 117 ms before brain knew what happened_*

[nsross]

People will believe in awe that (which is proven by the way) that a toothpick or grass and get shot into or through hard surfaces such as trees during a tornado, but not believe that a 400, 000 lb + plane going 500 miles per hour will affect steel beams. Nuts.

[conpop]

This was definitely the most in depth explanation of it and it was only 10 min. Thank you for this

[morgan]

Army veteran of 8 years here, NY native. Please post and share this video anywhere you see those awful conspiracies being posted. Although many of the people who believe those conspiracies are too racist to accept anything that comes out of an Indian person's mouth. But maybe SOME will see the truth.

[Mfields]

I dont even understand the conspiracists logic here… are they suggesting 10 million new yorkers didnt watch an aluminum plane collide with a building Or that the plane was made of steel? Or that the wtc is made of aluminum? Help?

[DriveByShouting]

The Laws of Physics don’t lie. The steel didn’t melt, just softened causing a sag. Particularly the floor joist that connected the lateral columns of each floor to the outer columns. Once one floor went, they all went. It became an unstoppable force.

The tilt seen when both the North and South towers initially begin to collapse, of both towers is due to the failure of the joists, pulling the outer columns inward, then each subsequent weakened floor followed in a vertical collapse, into each towers footprint.

The easiest way to explain the identical collapse of each tower is this scenario:

Have you ever put two or more identical straw’s together? Can’t do it without coming at a shallow angle or kink in one straw where it connects with the other. After you do, the inserted straw immediately loses its angle and straightens as it is now inside and supported by the second straw which cannot bear the weight of the high speed pancaking of the damaged upper floors.

[mykemech]

FINALLY!! I have been waiting for someone to mention the exponential increase in mass based on movement. Explains so much but so very hard to find someone to explain it.

[randycook]

Worked for the US Army Corps of Engineers just outside NYC. Our design management team studied the collapse in detail. Your video aligns with everything in their findings. People that don't know how anything works will still see a conspiracy. They will ignore facts and the laws of physics so they can believe something that aligns with their agenda. You created a good video.

[dadthejedi]

Load transfer also comes into play. When dozens of load bearing columns fail, the loads get transferred to the remaining columns which would not be able to handle the increased loads.

[Peppermint]

Under the initial impact, several floors did detach from the perimeter and from the core columns and partially collapsed over the floors underneath.. It was clearly reported by people trapped several floors under the point of impact, who called and mentioned they were trapped because the floor had collapsed. So several floors did partially collapse on top of each other, maybe even up to 10 floors. This had two consequences: several remaining floors had to support large weight from the collapsed ones. Secondly, many of the core columns and the perimeter columns did lack lateral support which was given by the floors themselves. It's amazing the buildings did stand after the initial impacts. The structural damage was already immense. The sustained heat aggravated everything by reducing the metal strength. It is interesting that it took about 1 hour of heat for each building to collapse. While there are a few theories, I like to think the core columns did gave up after staying in heat for 1 hour because the core columns were made from thick metal layers - consider metal being 2 inch thick, nearby heat will quickly bring the surface at high temps, but the center of the metal will take longer time before reaching the same temperature as the exterior surface. 1 hour seems to be enough for the center point of the metal to reach the temperature of the surrounding flames, at which point the strength of the metal is decreased.

[juslewissr]

8:25 The reflecting pools are in fact built on the exact location of the original towers, but those pools are actually 30% smaller in size than the bases of the towers were. So, unfortunately, they don't fully represent the "sheer size and majestry" of either building. I only learned about that a year or so ago, and it's apparently something most people aren't aware of.

[ericellis]

Very interesting. As time goes on, emotions fade, and we reexamine the data multiple times, I feel like analysis of the collapse has gotten better.

[TheOne-xuoy]

I mean….theres really not much mystery to explain when you understand two 120 ton aircraft slammed into the towers fully fueled, impacting the towers 460+ and 500+ mph/ 740 km/h and 804 k/mh. It was like two big ass missiles.

[diamondaxe]

When people tell me that those buildings couldn’t have collapsed, I ask them what they think would happen if you dropped a 20+ story building onto another building.

[rahul_rai]

Very well explained with deep research hats off to you.
Thank you so much for this

[Sckadoo]

@4:08 I've never seen sped up footage like this before, I had no idea they were constantly shaking!

[mycreations]

Controlled Demolition Conspiracies have really gotten a slap in the face this time..

[michaelsulkoske]

Why do you avoid discussing the Tower 7 collapse? Are we trying to forget that happened?