@@thetruthimpart cool story bro, but if asbestos is such a huge problem, they should tear down every building build prior to 1970. Because every single building build prior to that date contains asbestos. And insurance fraud? No kidding. The insurance paid 4.6 bln, rebuilding was over 12 bln Removing asbestos, which wasn't required, would at most cost a few hundred million.
I can appreciate that the building may be outdated in some respects because it WAS old by 2001, but the architecture was BEAUTIFUL in my opinion. As a young person when we'd visit, I loved to look up at their shape and design. I found them beautiful and fascinating. To this day I love many many many buildings in NYC for the era they represent in architecture. A little time capsule of what abilities existed up to that point in time.
@NovaDelta, it’s actually not that bad. I saw it in person and thought it was gorgeous.. and it may *mostly* be glass but it still took time and effort! I think it fits the New York skyline, just like the twin towers, if not a little bit better.
@@allywooge3930 Trade 1 is fine to me. Even though its still a glass shard, it still fits the profile of the original trade buildings. Trade 3, 4, and 7 look like generic glass office buildings, so theres nothing really trade centery about it. And trade 2 is drunk. Just personal preference as i prefer the classic gray window slit design of the original buildings
@NovaDelta of course! It’s just your opinion, I apologize getting angry at your comment. I was born after World Trade Center fell so I can not say anything about them, because I never got to see them in person.
This floor would be one of those hit by United 175, the second plane. It’s extremely valuable footage in that it shows the fireproofing that would end up being the building’s first line of defense, and just how spotty and subpar it was.
I'm a little surprised that you say _now_ you understand. I thought it was apparent to most everyone who witnessed events (live or on TV) that people jumped because there was no way out and the alternative was to die from smoke inhalation or fire. Every human whose exit was inaccessible would have tried to find an exit before moving to the windows.
There were 3 staircases. In one video they talk about stairwell C... Not so much that they were blocked but those offices were isolated from the staircases. By debris, fire or both. And rapidly filling with smoke. I think at that point it suddenly hits them that they are trapped 85 stories up. But were they actually trapped? They are if they don't have the resources to get down. I mean, look. You had to be a little bit stupid or dense or both to go up into those buildings every day especially after the truck bombing. Think of the people who went back in after the initial north tower crash. Some people said "we'd better send them back up because we don't want them milling around in the lobby and blocking the first-responders". Some people said "they won't hit us with two planes...the south tower is safe". Nobody saw the collapses coming. There wasn't all that much of a fire. People kept getting caught up in mistaken assumptions the whole day...and maybe it was just too much for some of them. Could they have survived? Maybe. Had they given-up trying? Clearly. The estimate was that a healty person could get down the stairs from the 100th floor in 90 minutes. That's 45 minutes going down stairs from the 50th floor. For a healthy person. Some people gave-up in the stairwells. Others raced by them on the way down...some stopped to help. Some stayed in the lobby when they got down. Almost all of them died in the collapses. A lot of people survived the collapse and got cancer from the dust, probably the fire-protection foam was asbestos-based...which fuels the conspiracy theories...that the whole thing was just an excuse to avoid asbestos liability and get insurance money to rebuild. Arguably That is exactly what happened And maybe in another 50 years the truth of that will come out.
Yeah, honestly had the builders known what was coming they should have put the staircases at the four corners of the building and not in the middle where the vertical columns and plumbing and elevator shafts all were.
You can see why there was all that dust. The building was basically steel outer shell, steel joists inside holding up concrete floor slabs, a couple of concrete and steel columns for stairwells, and a shit ton of drywall. That drywall would make a huge mess of dust, and the metal would just grind everything up. Add 110 stories and it's no wonder they didn't find very many bodies or computers or phones of filing cabinets.
@Makeli7, As far as I know, there was no concrete used in the towers other than for the flooring. The stairwells were only lined with sheetrock, which actually allowed some people to break out when the stairwells were blocked.
Love the construction guys' background exchange @ 13:11 Guy 1: "I been in this business for longer than you been alive." Guy 2: "Ohh, oh so now it's like that now right?" Guy 3: "Tell 'em you got underwear older than him." Guy 2: "So now it's like that now, huh, right? Now it's like that." Guy 1: "I got underwear older than you." Guy 2: "So now it's like that huh?" Guy 4: "Yo guys . . ."
Impact was at floor 77 to 85 on tower two, after it was renovated on floors 77 to 78, 88 to 89, 92, and 96 to 97. Failure began at floor 77 to 83. While Tower one sustained damage at 93 to 99. Tower one was renovated on floors 92 to 100. Failure was at 92 to 100. Both towers were coincidentally renovated and upgraded for fireproofing at around the same location as the impacts Don't attack me, just stating the facts according to maintenance logs, various local newsprint sources and locations of impacts.
The trusses/bar joists looked flimsy individually, but as a composite system (in conjunction with the floor slab, and truss chords acting as shear studs) it was very robust, well-designed and highly redundant with transverse members, and was more than adequate for its intended use. There are many buildings from the same era with nearly identical floor truss systems, like the Sears Tower and Aon Center in Chicago. The biggest problem is they're not very fire resistant; the trusses had thin chords that heated very quickly (like heating up a paper clip until it's red hot), and buckled from the fires, causing the floors to sag and pull in the perimeter walls. The connections to the spandrel plates were a weak point too and failed in the fires, not much more than small brackets with welded gusset plates and two 5/8" bolts. Had the engineers designed the floors with a beam and girder system (as was the case on the mechanical floors), the thermal resistance of the steel would have been magnitudes improved because the members wouldn't have heated up so quickly. Beams would also provide more structural redundancy, more resistance to the sag that pulled the perimeter columns inward since the loads are more evenly distributed, and solid connections to the spandrel plates. Easier to apply SFRMs to I-Beams and girders. It's possible it wouldn't have collapsed with a beam-and-girder floor system (assuming all other structural elements like the core/perimeter columns, and hat truss are the same), but then you end up with a much heavier, and more expensive building.
I do agree.. and I would like to say that these buildings were state of the art at that time... being under construction with many years of new tenants ... the fire proofing was in really good shape.... not to mention how much rebar and steel used.
I was told they actually intended on having the towers much stronger with heavier steel columns that would have increased the budget millions of dollars so they decided to change majority of it at the last minute. There was also speculation with the 200,000+ tons of weight from the towers not having enough support at the base. I can only imagine how this could have affected things differently on 9/11.
@@mr.amthonybarry7056 I heard that this fire proofing stuff they added to the steel parts had never been tested or scrutinized by the authorities. Because in case of failure the architects and engineers would have been forced to start from scratch basically. That was no option because they already spent so much money on the project that it became too big to fail. And since the Port Authority had been more or less exempt from New York building laws, they had the freedom to go on without testing the fire proofing.
It's funny how at the beginning saying the date he almost says 19__ instead of 2000 and one. Understandable, he spent most of his life at that point in the 1900s
I have always heard about and seen diagrams of the trusses, but wow, you don't appreciate how thin they were. That, plus the metal underfloor of the floor above, would have been an oven.
Thats why they jumped!!! The inside temperature must've been like being in an oven times five!!! Plus, they couldn't see anything. I think those who jumped were so happy to finally have some fresh air
"In 2000, Harris Beach moved its New York City office to the 85th floor of the South Tower at the World Trade Center. At the time of the September 11 attacks, it was the highest floor in the impact zone where United Airlines Flight 175 had struck the tower. Most employees were evacuated but six employees-five lawyers and a construction manager (Hector Tamayo) supervising renovations-died." Not sure, but the one who died might be the narrating. He sounds like a supervisor.
He does seem to be in some sort of oversight/documentation capacity, especially considering his extensive knowledge on individual columns' and trusses' identifications, and how clear and thorough the video is. It definitely feels to me like it was taken as part of the renovation less so than as a personal project.
What line of work did Harris Beach do? Ebasco Serivces had this floor along with 12 others in 1979. I worked in the 86th floor. I still miss the Towers.
ALWAYS FELT LIKE the ceilings were too low , for anyone to assume that the type of insulation should have not been blown off by such an impact is insane and the fact they both absorbed impact fro a jumbo is amazing
It looks like the insulation just falls off in chunks. There is lots of what looks like earlier repairs. It seems to me like a thorough inspection would include tapping the beams and trusses to se if something comes off. It needs inspection from the top as well. I doubt this is the entire floor inspection in this video. You can see the water sprinkler system which didn’t work because the water was cut off when the planes hit. Who knows how things would have turned out if they had worked.
Davi Edmond buddy Hey jumbo jet doesn’t change the fact that it is made of aluminum and this is the steel & concrete reinforced Building doesn’t matter about fire proofing. Immovable object always wins
Davi Edmond by the way the fuel burned off within seconds never got hot enough to melt steel. Period. It’s just not possible! Do you think it’s a coincidence that David Rockefeller who oversaw the construction of these buildings was featured on the cover of Time magazine and on that cover his watch said 911. Come on these people don’t deal in coincidence
taledarkside ah it’s a fact jet fuel exploding into a cloud would burn off within correction tens of seconds ! I will take and a immovable object any day you’re simply stating a train because there’s a lot of weight behind but then I can turn around and say I have 1000 foot steel wall who’s going to win. The plan was made of aluminum. I am a physicist and you were clearly no scientist. Unless you filled out. The narrative of that day is impossible. The firemen stated over and over they heard explosions on the first floor!! And you still can’t explain building 7 !! There was a tiny little fire that could’ve been put out easily still would not explain entire building collapsing from the bottom up. Grow up you must be a millennial. Follow the money buddy the growth of government the loss of freedom the loss of liberty this is what happened that day and it was perpetrated by the Bush family. Consequently Jeb Bush was in ceo of security company inside the twin towers. You cannot win this I have investigated this for 18 years
taledarkside btw Google the jet plane going 500 miles an hour hitting A 5 foot thick concrete wall that jet disintegrated Barely scratching the concrete. Where are the black boxes? Do you really believe the 9/11 commission statement that the planes atomized ?? All 4 Space shuttle Columbia broke up at 17,000 miles an hour with the debris field of 70 miles and they reconstructed it found body parts, people’s belongings. Yeah in Pennsylvania none of this was found not even a titanium engine!! Grow up wake up investigate your trust in government. These things are not possible. There is the possibility that you are simply work for the government
the designer of WTC was afraid of heights, one reason for small, narrow windows, that gave you a more secure feeling as you walked up to the windows,...saw that in a wtc documentary. and I agree with one comment that says the offices seemed claustrophobic. in other documentaries about 911 as some mentioned the fireproofing was blown off at impact since it was not adhered very well, but i wonder if any fireproofing would have been e nuff with all the jet fuel that was on fire, just a shame that someone is mean e nuff to crash planes into any building to hurt innocent people.
thanks so much for uploading!!! i always wanted to see what the inside looked like and i've never been inside!!! THANKS & If u have ANY more pls upload!! :)
Everyone is bitching and moaning about how the trusses aren't huge, but if i remember correctly, most of the support came from the steel forks between the windows. Like an exoskeleton.
You're exactly right. Instead of it being a continuous steel frame throughout, the architect and engineers created an exoskeleton of sorts that carried the loads and stresses. The failure came when those cross truss beams weakened and sagged, pulling the exterior walls inward, thus causing the collapse of the above floors.
The buildings depended on two sets of load bearing walls: the outer set was in the steel framework that formed the towers outer walls. The inner set was in the steel and concrete core that contained the elevators, stairways and utility corridors. The trusses were the bridge between the inner and outer supports.
Note: There was ZERO asbestos in the South Tower! Not one floor in that tower ever received ANY amount of asbestos as it was banned by the time the construction of that tower was done. There was asbestos in the lower floors of the North Tower, though efforts had been made to remove/replace it over time. So much ignorance on display here in the comments and by the person who posted this.
Reminds me of the low ceilings and claustrophobic feeling of the Indiana National Bank Tower in Indianapolis Indiana. Considering these towers are huge the floors themselves and offices are narrow, crowded, and cramped with low ceilings. They look beautiful from the outside but when looking out of the narrow windows there isn't much of a view. Also one thing that struck me was now small, cramped, and narrow the stairwells were just like the World Trade Towers.
Deanne Williams oh fuck =[ were they taken by that day 😔 I’m really hoping those guys made it out or weren’t there when it happened cause you can’t not love jolly dudes being being dudes with their coworkers 😢 it’s just sad
Just goes to show how easily that fire protection was broken loose from the beams on the planes impact. It was falling off on its own in certain parts.
I'll guarantee you when the planes hit, all of that fire protection was blown off all of the beams. So sad this had to happen. I still think there is a chance it was an inside job.
I’d hate to think about the guys working, and if they were still there finishing a project when the plane hit. Horrible! Just Horrible! I can’t imagine the horror all those people felt. It’s too horrific to even imagine it
As a contractor, I would never allow my job site to be that messy. Cleanup should happen every day. I am also bothered by so many breaches in the fire proofing coatings on the steel members. That being said, when the plane hit and exploded, much of that fire protection would have been blown off, causing heat to weaken the steel, which caused the building to collapse.
I've seen much worse on job sites! It wasn't that bad. The so called jet fuel that was burning in the tower can not melt steel beams. It would have to get to atleast 2300 degrees, a jet fuel fire temperature can only reach 1200 degrees. So the apparent plain that hit the tower would not cause the building to collapse the way they did. What's real fishy is that the wing on the plane was able to rip through steel columns a airplanes wing is aluminum and is the weakest part on a plane. It's not possible.
@@loganw1997 the fuel from the 'plain' didn't melt the steel, it weakened it. As for the perimeter columns being pierced by the wing, it's called velocity. The columns also tapered up the towers so they were thinner at the point of impacts than at lower levels.
@@pelnapkins4379 When an aluminum structure hits a steel structure there should be some sort of collision at the point of impact. The wings on airplanes, is to weak to cut right through steel beams. The steel, should have cut through the Aluminum wing! Instead what we see in the videos is the plain go right through the the tower like a ghost. It seem to melt into the Tower! The wing doesn't snap back and fall to the ground like it should, the nose of the plain should have crumpled right up! The second it hit that structure. The Physics just doesn't add up. Why is the plain passing through at uniform motion? The plains wing would not slice through box steel columns! No matter what speed at impact BTW a Boeing 747, cannot fly 450 miles per hour, at a Height of 1000 feet in the air it's literally impossible. The air is much thicker the lower u fly u would want to fly at a much higher level to reach that speed. Wtc tower 1 and 2 where 220 feet wide. So are you telling me that a Boeing 747 can fly 400 mph at 1000 feet, and the target is 220 feet wide and it hit dead on. 🤔 impossible.
@@loganw1997 we have no idea what the planes did to the internal columns, we can only speculate. We do know however that the planes did penetrate the perimeter columns because we can see it with our own eyes! The planes that hit the towers were not 747s, they were 767s which have a wingspan of 170ft. You obviously have your opinion and I'll leave it at that mate.
Journeyman sprinkler fitter here. It's a shame the plane hit the water main riser and took it out because I believe had the standpipe served those heads that more people would have survived
13:26 the material looking all rugged and stuff reminds me of the underwater footage of the wreck of the titanic except this is filmed before the events of what was going to occur meet months later...
This section held up alot better then some of the photos I saw. The buildings were built right when asbestos was being phased out so the spray on stuff just wasn’t the same.
So many "expert" opinions about the collapse of the WTC buildings. I have an engineering degree and I own a company that applies sprayed fire-resistive materials (SFRM), to structural steel buildings every day. I have 38 years of experience in the industry. The SFRM you see on the trusses is a mineral fiber based product call CAFCO "Blaze-Shield". This product was replaced in the late 80's by a product called "Blaze-Shield II", which is still manufactured today. While the mineral fiber based products are still used, other gypsum and cement based products are much more prevalent in the industry today. Ask me anything.
+beachcomber2008 NEVER in history has fire brought down a skyscraper. Except WTC 1,2 and 7 but those don't count because those were controlled demolitions.
It don't take much to knock the fire proofing down I remember working in Newark and putting up the the drop ceiling and that stuff would fall really easy
@@FireTech7 standard residential ceiling height in the US is 8.5 feet, with 9 feet and above not uncommon. Only crappy old houses have ceilings lower than 8 feet. Standard office ceiling height is 10 feet. An 8 foot ceiling is low for a house and extremely low for an office.
@@Polychromophilia Typical ceiling height in homes until very recently has been 8 ft. Precut lumber is literally made for 8 and 9 ft ceilings, I think 8.5 would be financially unwise decision lol. Typical height in schools and offices is 9'. Yes it's low, especially now, but it was just the way things were in the 60s. The more interesting thing to point out to me is the lack of clear space above the ceiling, which is hung immediately below the trusses, requiring everything to run through the webs. I've seen very many mid-century buildings renovated with _lower_ ceilings just to make space for larger ductwork and other building systems.
Holy crap! All the people yammering about how the jet fuel couldn’t have “melted” the steel. You are absolutely correct. Jet fuel, or even fires burning unchecked in confined spaces for over an hour can’t MELT steel. They can, however, weaken it so it bends and no longer provides the support to hold up the building. Steel is made from iron and other alloys. Have none of you EVER seen a video of a blacksmith bending iron? Each column was designed to support a specific amount of weight. With the support of the trusses. When the trusses weaken, the column was no longer supporting its weight. Once a critical number of columns are not supporting the weight ABOVE them, the whole system will start to fail. That is why WTC1 fell first. Because there was more weight above the columns. No one has EVER claimed there was molten STEEL in the fire. Other metals melt at much lower temperatures. Especially aluminum. The skins of aircraft are made of aluminum and melted aluminum is what was seen dripping from the corner of WTC1 minutes before it collapsed. Each floor in those buildings certainly contained numerous objects made of aluminum that contributed to the pool of melted metal, not steel, reported in “the pile.” Both Towers started out with severe structural damage from the planes, while WTC7 did not. It had some damage from when WTC2 collapsed so it took much longer for the fires to weaken enough of the structure to fail and collapse. Now, put away your excuse of saying “people” said there was melted STEEL as a way to cast doubt on every detail of the incident. Have some respect for the nearly 3,000 people that died, and their families and friends. It is easy to forget the human suffering involved when you get tied up in details false theories and having to defend them.
Military grade nano thermite burns at 3,500 degrees, watch it burn through 4 inch thick I beams. The question is how was 500,000 tons of steel magically transformed into 3 micron sized particles of dust. To blow away in the wind, before hitting the ground. Everything else has been discovered in the last 22 years, the type of devise and how it works has not. We have clues but no proof yet.
what immediately strikes me is how claustrophobic the rooms feel. imagine the fire inside the rooms at the time of 9/11, no wonder everything happened that day
Ollie Pontone the floors aren’t claustrophobic, rach single floor had at least one acre of floorspace, that’s a massive amount of lettable floor space.
I just heard Javier Porley’s version of 9/11, he was a constructor at that time in that floor . And while he was talking I was imaginig about how did it look like. This video is gold. He is an Uruguayan survivor 🇺🇾
If Facebook live existed back then, everybody in both towers would be going live and we would see what the view inside the towers during the attack would look like. It certainly would scare the shit out of many people.
This should have just been a boring video hardly anyone would have seen. Instead, thanks to the unthinkable it's now a piece of history. And a glimpse back into happier times.
Total Fabrication. A steel structure never before or after 9/11 collapsed due to fire. If The structures collapsed due to the impact of the planes , the structure would have collapsed to the level of the impact as the floors beneath the impact zone were not structurally compromised. This was an inside job . Controlled demolition. the planes flying into the towers was a diversion. For weeks leading up to the attacks the buildings went under "maintenance in the core of the structure. Hundreds of civil engineers echo the same sentiment. Compare the collapse to controlled demolition.
@@JP-uu2rwthat's the thing I never understood. Like I totally get the temperatures got so hot it softened the collumns and could collapse. But I never understood why it didn't stop at the point as impact. As you pointed out the beams below impact weren't compromised. There was no extreme heat to soften the supports on that part of the tower. I've watched videos of the tower collapse and in one recent video you can see the towers main center support collumn standing after everything fell around it. Then suddenly starts to fall then disintegrates. No collapse or amount of fire is going to cause the entire center support collumn to disintegrate into dust in ten seconds. Especially the part that wasn't structurally compromised.
To think a mere two months later it all would be debris and a burning twisted wreck. God rest the souls of the victims and may the families and friends of those lost find peace all these years later.
It wouldn't have mattered after the crash even if it were 100% intact. The fire protection is for a 'regular' building fire not one caused by a fuel ladden commercial airliner. That said, most that fell off after 93
Not all, one was fully done, the other 3/4. Part of why people think it was controlled demolition was to get round the asbestos removal and updating the towers to modern standards.
@MTG Zombie Silverstein had a single tower design ready months before the planes hit. Building 7 fell without a plane, the twin towers falling in their footprint seems just odd.
@@arjanwilbie2511 There is asbestos present in damn near every building built before 1980. There are no rules stating that it must be removed. In most cases it's actually better to leave it alone.
TatersUnited It’s obviously easier and more economically feasible to just kill a whole lot of people and have to pay victims compensation money and spend millions if not billions on cleanup work right? It’s not “getting round the asbestos removal” if that asbestos covered everything and everyone upon collapse.
So the only she columns were the out side walls and center right so minus the out side pillers after plane took out a good section, the weak floor joist just gave right which caused a domino effect. Which is why the building seem to implode On itself and when it reached the ground it pushed the walls outward!
The red wire is fire alarm system wire, the blue is communication/computer wires, the white is intercom/phone wires. Black are fiberoptic or coaxle cable.
Quisiera. Entender El Inglés, Pero Lo que Alcanzo a Comprender Hombres Estaban Trabajando en Ese Piso Como Mantenimiento, y Oh Desgracia Poco Tiempo Despues DIOS BENDIGA A TODOS HERMANOS 🙏🙏🙏🙏🙏🙏
Crazy to think that they probably came close to completion on these renovations if not got them done only for it to go up in smoke and come crashing down not even 2 months later.
Angelo Caputo wrong...the production of certain building materials was banned such as dry wall and ceiling tiles but no it was never banned completely and especially in commercial applications such as fireproofing...to this day it’s still used in bings like brake pads...also there was still plenty of building materials in stock and commercially available after the ban
So was the enter floor spans just these weak trusses. No solid I beams every X feet? If so, amazing they could take the impact without complete failure!
it’s because the building was held up by the outer structure. the only support inside was the inner columns where the elevators were. i go back and forth on the conspiracies. sometimes i think there were bombs but then i see a video like this and realize the buildings weren’t as strong as many believe.
Very interesting. If that much fire insulation had just fallen off from poor adhesion how much more fell off when a plane hit at 500MPH ? Some areas look as if they had been patched up before. I wonder if 9:24 got repaired before September ?
I'm 0.37 in and I hear "85th floor" and "fire protection". I'm looking at a room that needs considerable amount of work because it honestly doesn't look safe.
The fire exit stairwell closest to where the cameraman is filming was the one left intact after the second plane crash. There is a good chance whoever was working in this freshly renovated space got out alive.
TBF it wouldn't have mattered how much fire resistant foam on the beams again this was not set up for a fully fuelled passenger plane to hit it at subsonic speed it would have been blown away the same if you where blowing flour of a counter?..the fact is the building is is fire resistor the likes of electrical fire or if if papers catch fire..by that time a hero from the office would have put out the flames with an extinguisher...dont quote me on spelling lol but you get me!!!..not a passenger jet full of fuel...surprised the building didnt collapse on first impact TBF..plane ripped through most if not all of the support columns?
It's obvious from this video that those thin flimsy floor trusses and corrugated steel decking was not fit for purpose, and easily the weakest part of the structure. Not to mention they were only bolted on to the outer core and perimeter columns by small and spaced out angle joints. This engineering flaw was a big part of why the towers came down. The impact, shredding, explosion, and fires, all played a role in causing enough trusses to fail that the sagging was transferred to the perimeter columns and core until the overhanging structure gave way. It is important to note that these buildings were built in the early 70's when this revolutionary "steel tube" technology had never been done before, and at a time when commercial aircraft had not been known to deliberately smash into stationary structures at top speed. One of the few positives to come out of 9/11 is that all visibly high towers and buildings in the developed world are now built to the strongest of standards with regard to aircraft terrorism. I don't think it'll happen again, but there's still no room for complacency.
@@kaisertrinityt.m.i.s1607 The answer to that is yes. If the internal office space had cross columns in addition to the perimeter walls and the core they wouldn't have fell. Anyway, the old WTC's were not that attractive and NY'ers didn't like them during the 1970's when they were first built. It will be the same with the new towers, they will become gradually more accepted with time as people get used to them. It was decided not to rebuild the twin towers in the immediate years after as it would not duly recognise the scale of the tragedy or provide a sense of renewal for the city.
@@demonhalo67 yeah, i wish they would have rebuild the twins. my idea to make the twins stronger was to give the inner core an additional strong concrete skin, followed by one or two rows of pillars between the core and the outer facade. then of course, as you sayed i would add cross beams inside the floors and reinforce the connections between the floor elements and core elements. and for the last part i would add a better water sprincler system in case of a fire
Its worth noting that the towers were designed in the mid 1960s. Construction started around 1967. They used new engineering methods that hadn't been really tried out yet. The largest plane at the time of design was the Boeing 707. That's how early these were. So much of the engineering and building methods were archaic at the time of their destruction.
This examines the sprayed on fire proofing, essentially asbestos and a binder, which had the dried consistency of crumbly plaster. The airplane impacts and explosions blew off nearly all of this coating throughout both towers' impact zones. The continuing fires weakened but did not melt all exposed steel. Critically, the bolts which secured the floor trusses to the outer columns and inner core began to fail. The concrete floors played the structural role of stiffeners to the outer columns. As floor sections fell in the impact zones and the outer columns deformed, the damaged inner core could support only so much weight from above before it collapsed. That's why the south tower fell first: United Flight 175's lower hit left more weight above the impact zone.
The fire could not get to enough temperature to even weaken steal, cmon. The jet fuel was gone like in seconds. I always wondered how could some people to survive plane crushes, but because jet fuel burns like in 10sec, there is real change to surviving the plane crash in some cases. Office fires were starved of oxigen and could not been that hot. One firefighter who got about 70th floor had said that if he had some tools it would take few minutes to get it out.
Great story but I'm still confused... how did the fire weaken the floors below the impact? Why did the buildings fall so fast, shouldn't the 70 stories below the impact slow the fall? The steel was bigger, stronger and thicker the closer to ground level. I can't buy your bs, sorry.
++ mrsmerily.. Each fireman who saw flame probably had the same idea about the ability to put out a "small" fire that was right in front of them. Problem is (was) there was MUCH more fire in other parts of the building (all the floors above #70) and it wasn't going out by itself in the 10 seconds you speak of. The 20,000 gallons of fuel they hold is more than two of those gasoline tankers you see on the road, which if burned in 10 seconds would have blown the tops from the buildings instantly. Good chance the fireball we see was from the fuel in the wing tanks and the belly tank just leaked into the elevator shafts for a slow burn over another hour.
Wrong,jet fuel can't generate the heat required to melt steel..fact,don't take my word for it, research it yourself,silly to put shit out their without checking the facts
Ciaran Mcilwee Fascinating. Why do they spray fire resistive material on all steel beams in every steel framed building? Awaiting your informed and educated reply.
@@clownpocket fire proofing adds time for the responders to control or knock down a fire. Although steel beams have been known to survive fires it's also not uncommon to add a extra layer to the beams that can prevent the fire from weakening the structure. Heated steel looses strength as it becomes hotter, the spray is just a heat sheild. Although I'd say a plane slicing threw the tower would likely strip most of it off, the shielding is actually quite brittle. Firefighter reports and survivors reports stated some floors were dropped on impact which would mean less is left to support upper floors by theory.
What's up with the electrical wires strung randomly all over the place? I'm not talking about the ROMEX I see used for temporary lighting & receptacles or the communication wire like CAD-5 and Shielded coaxial cable, I'm talking about the strands of current carrying single conductor wires. A building like this would REQUIRE commercial wiring meaning ALL current carrying electrical wire would be enclosed in conduit and junction points enclosed in metal boxes with metal covers.
If you look more closely, you can see that they are rattlesnakes which were being stored there so that on September 11th, the snakes would escape and bite anybody trying to flee the building.. 🐍🐍🐍🐍🐍🐍🐍🐍🐍🐍🐍🐍🐍🐍🐍🐍✈️✈️✈️✈️✈️✈️✈️✈️✈️✈️✈️🏥🏥🚀🚀👽🙌🙌
You guys have never seen an office before ceiling tiles are installed. The wires are not electrical and in fact some of them are smoke detector wires coiled up because the detectors go in last after the tiles are placed.
I got underwear olda than you! haha. love the site banter. but also appreciate the survey work here. Does anyone know how the intumescent foam reacts? 5-10x? so small 2-3" bare sections of steel would be permissible?
They were going through a remodeling process not sure what point they were at but I do believe they were upgrading the fire alarm systems around this time
@Gregory Dahl Those walls were 14 inch box columns, about 5/16" wall thickness. Nothing to a 141 ton airliner moving as fast as a bullet. You need to take a physics class.
@Gregory Dahl The trusses at the towers sagged from the heat. Doesn't matter what you think they were, the fact it they got too hot. This is seen on video, it is undeniable.
@Gregory Dahl You're an idiot. The only columns that were 2.5" thick were the core columns on the ground floors. And guess what? 141 tons at 585 mph would destroy those too. As I stated, learn some physics.
So flight 175 struck this building between floors 77 and 85. These guys are working on floor 84 less than two months before. Makes you wonder if they were there that day or if their work was done and they were lucky to not be there.
They were probably done. These guys work pretty quickly because they work well into the night. The night for them usually ends at like 11 pm or midnight. For a room like this will take them about 3 weeks. Then they move to another room. So maybe they were there just in another room that needed work.
When the entire floor is on fire and the sprinkler system has been severed the entire building stood no chance, the fireman had no way to put out the fire therfore the entire floor collapsed do to the raging inferno from inside and the winds from outside fed the fire with more than enough oxygen due to the winds at that height, the winds acted like a giant bellow going through the opening the plane made when it entered.
Do believe the small hole with no aircraft wreckage at the Pentagon was caused by a 747 Airliner with hundreds of seats, luggage, massive tail section and indestructible engines the size of buses?
Why does it look like black pipe is used for the sprinkler system? ( I thought that's normally for gas or air lines, not water) shouldn't it be galvanized pipe to avoid rust?
Your contradictory comment amuses me. But anyway, it's the other way around... The support columns hold up the 'gym roof', hence the name 'support column'. The 'gym roof is only designed to hold up the floor, and is tied to the inner and outer support columns. It's a good design... until you crash a plane into it at 500mph.
@Warren Bain with all due respect... That's complete bullshit. Never before 2001 had a passenger jet been used in a suicide attempt as a weapon. The building was designed to withstand a single plane impact at low speed, with low fuel. In case you didn't notice the building did withstand something much beyond the design scenario, which is impressive... Until it eventually collapsed.
@Warren Bain architects don't design the towers to withstand plane impacts, engineers do that. And the chief engineer of the twin towers stated that the towers weren't designed to withstand the impact of a fully loaded passenger jet traveling at top speed. But even besides that: if you only look at the damage caused by the plane impact; how can you even argue that the tower was designed to withstand that.
@Warren Bain was designed to take multiple plane hits, but yet was at risk of toppling after one car bomb brought down multiple floors, the port authority stated they where in a race to secure the structure after the bombing becouse of a unstable base. The architect didnt seam surprised by the fact that the building was in such bad shape, more surprised that a bomb was brought in.
If it was a controlled demo why did the top 15-20 floors fall as a complete unit? Did the explosions not work on these top 20 floors? Most likely once the jet fuel weakened the trusses the weight of the upper floors finally after hours & hours of burning came down forcing the remaining floors to collapse like pancakes. Building 7 took massive hits from debris from towers- fires internally burned for hours. Anyone here believe that explosives could be in a building that was on fire & burning but did not go off for hours & hours. If there were explosives the fire would’ve set off them randomly depending which one the fire reached first.
i like your thinking. one thing tho, the buildings didn’t burn for “hours and hours”. they actually collapsed after one hour. literally around 55 minutes or so.
I don't think it was a typical controlled demo. They would have figured the planes could nearly collapse the building themselves, just need a few explosives for a boost at the time of collapse, and maybe explosives to take out a few of the lower supports. It's also possible some sort of high tech weaponry was used to turn much of it to fine dust.
Lets put it this way have anybody seen how they arrange pocard cards they can withstand lot of weigh depending how they arrange them so how many floors were damaged on the top ? on the bottom ther should be enough levels to hold the damaged floors on top
It's incredible how such a seemingly mundane video can come to be so historically significant years later
not significant at all bud!! whackjobs who dont care who they upset is all this narcissistic society is witnessing!!
Actually...two months later
@@BigWesLawns i think Tony is referring to the significance of this video alone, witnessing workmanship inside 1 of 2 giants which no longer stand.
@@thetruthimpart cool story bro, but if asbestos is such a huge problem, they should tear down every building build prior to 1970. Because every single building build prior to that date contains asbestos.
And insurance fraud?
No kidding.
The insurance paid 4.6 bln, rebuilding was over 12 bln
Removing asbestos, which wasn't required, would at most cost a few hundred million.
@@thetruthimpart There was no asbestos in the towers, stop repeating that lie.
I can appreciate that the building may be outdated in some respects because it WAS old by 2001, but the architecture was BEAUTIFUL in my opinion. As a young person when we'd visit, I loved to look up at their shape and design. I found them beautiful and fascinating. To this day I love many many many buildings in NYC for the era they represent in architecture. A little time capsule of what abilities existed up to that point in time.
beats the typical skyscraper glass shards the new complex is
@NovaDelta, it’s actually not that bad. I saw it in person and thought it was gorgeous.. and it may *mostly* be glass but it still took time and effort! I think it fits the New York skyline, just like the twin towers, if not a little bit better.
@@allywooge3930 Trade 1 is fine to me. Even though its still a glass shard, it still fits the profile of the original trade buildings.
Trade 3, 4, and 7 look like generic glass office buildings, so theres nothing really trade centery about it.
And trade 2 is drunk.
Just personal preference as i prefer the classic gray window slit design of the original buildings
@NovaDelta of course! It’s just your opinion, I apologize getting angry at your comment. I was born after World Trade Center fell so I can not say anything about them, because I never got to see them in person.
@@allywooge3930 Ah, its fine. I was born post-9/11 as well. I just like old architecture
This floor would be one of those hit by United 175, the second plane. It’s extremely valuable footage in that it shows the fireproofing that would end up being the building’s first line of defense, and just how spotty and subpar it was.
It’s shocking
The plane hit diagonally from 78-84. It would have been just below.
@@demonhalo67 correct
All three buildings were pulled.
@@jeffjansen582 Like your face was pulled. And now what are you? Your face is pulled and it looks like a deflated beach ball. How sad. How pitiful.
Hard to believe that in less than 2 months that would all be destroyed
I oddly enjoy how he recorded this in a vlog-style like he knew UA-cam would exist
Check Nelson Sullivan. His videos are on UA-cam and he did it like the vlog style back in the 80s!
@@ahzootube RIP to him as well!
@@sjcflawless He gone?
@@saintjabroni en.m.wikipedia.org/wiki/Nelson_Sullivan yeah! He died in 1989! His last video is on UA-cam as well!
@@sjcflawless Well crappers. Too young, for sure.
Now I understand why people jumped. You are boxed in. Only 2 exits. Fire blocked both exits and the window was the only option.
I'm a little surprised that you say _now_ you understand. I thought it was apparent to most everyone who witnessed events (live or on TV) that people jumped because there was no way out and the alternative was to die from smoke inhalation or fire.
Every human whose exit was inaccessible would have tried to find an exit before moving to the windows.
@@NxDoyle well... I am sure we all knew this. But not to the extent of small doors as exits.
There were 3 staircases. In one video they talk about stairwell C...
Not so much that they were blocked but those offices were isolated from the staircases. By debris, fire or both. And rapidly filling with smoke.
I think at that point it suddenly hits them that they are trapped 85 stories up. But were they actually trapped? They are if they don't have the resources to get down.
I mean, look. You had to be a little bit stupid or dense or both to go up into those buildings every day especially after the truck bombing. Think of the people who went back in after the initial north tower crash. Some people said "we'd better send them back up because we don't want them milling around in the lobby and blocking the first-responders". Some people said "they won't hit us with two planes...the south tower is safe". Nobody saw the collapses coming. There wasn't all that much of a fire.
People kept getting caught up in mistaken assumptions the whole day...and maybe it was just too much for some of them. Could they have survived? Maybe. Had they given-up trying? Clearly.
The estimate was that a healty person could get down the stairs from the 100th floor in 90 minutes. That's 45 minutes going down stairs from the 50th floor. For a healthy person. Some people gave-up in the stairwells. Others raced by them on the way down...some stopped to help. Some stayed in the lobby when they got down. Almost all of them died in the collapses. A lot of people survived the collapse and got cancer from the dust, probably the fire-protection foam was asbestos-based...which fuels the conspiracy theories...that the whole thing was just an excuse to avoid asbestos liability and get insurance money to rebuild.
Arguably
That is exactly what happened
And maybe in another 50 years the truth of that will come out.
@@touristguy87 agreed. Shitty situation. Rip
Yeah, honestly had the builders known what was coming they should have put the staircases at the four corners of the building and not in the middle where the vertical columns and plumbing and elevator shafts all were.
You can see why there was all that dust. The building was basically steel outer shell, steel joists inside holding up concrete floor slabs, a couple of concrete and steel columns for stairwells, and a shit ton of drywall. That drywall would make a huge mess of dust, and the metal would just grind everything up. Add 110 stories and it's no wonder they didn't find very many bodies or computers or phones of filing cabinets.
@Makeli7, As far as I know, there was no concrete used in the towers other than for the flooring. The stairwells were only lined with sheetrock, which actually allowed some people to break out when the stairwells were blocked.
Love the construction guys' background exchange @ 13:11
Guy 1: "I been in this business for longer than you been alive."
Guy 2: "Ohh, oh so now it's like that now right?"
Guy 3: "Tell 'em you got underwear older than him."
Guy 2: "So now it's like that now, huh, right? Now it's like that."
Guy 1: "I got underwear older than you."
Guy 2: "So now it's like that huh?"
Guy 4: "Yo guys . . ."
Tamburello haha. Boys will be boys
Sounds like joe Pesci
That wop accent tho
Tamburello israel did 9/11 nowingradical3.blogspot.com/2018/04/by-way-of-deception.html
im batman I can’t hear it without seeing that dude now LOL
Impact was at floor 77 to 85 on tower two, after it was renovated on floors 77 to 78, 88 to 89, 92, and 96 to 97. Failure began at floor 77 to 83.
While Tower one sustained damage at 93 to 99. Tower one was renovated on floors 92 to 100. Failure was at 92 to 100.
Both towers were coincidentally renovated and upgraded for fireproofing at around the same location as the impacts
Don't attack me, just stating the facts according to maintenance logs, various local newsprint sources and locations of impacts.
+John Smith Coincidence. Coincidences DO occur.
+John Smith inside job....?
+John Smith can you give me the source pls
pretty big coincidence
That is suspicious but didn't the plane that hit tower 2 almost miss?
omg, 2 months away... consider yourself lucky
The trusses/bar joists looked flimsy individually, but as a composite system (in conjunction with the floor slab, and truss chords acting as shear studs) it was very robust, well-designed and highly redundant with transverse members, and was more than adequate for its intended use. There are many buildings from the same era with nearly identical floor truss systems, like the Sears Tower and Aon Center in Chicago. The biggest problem is they're not very fire resistant; the trusses had thin chords that heated very quickly (like heating up a paper clip until it's red hot), and buckled from the fires, causing the floors to sag and pull in the perimeter walls. The connections to the spandrel plates were a weak point too and failed in the fires, not much more than small brackets with welded gusset plates and two 5/8" bolts.
Had the engineers designed the floors with a beam and girder system (as was the case on the mechanical floors), the thermal resistance of the steel would have been magnitudes improved because the members wouldn't have heated up so quickly. Beams would also provide more structural redundancy, more resistance to the sag that pulled the perimeter columns inward since the loads are more evenly distributed, and solid connections to the spandrel plates. Easier to apply SFRMs to I-Beams and girders. It's possible it wouldn't have collapsed with a beam-and-girder floor system (assuming all other structural elements like the core/perimeter columns, and hat truss are the same), but then you end up with a much heavier, and more expensive building.
I do agree.. and I would like to say that these buildings were state of the art at that time... being under construction with many years of new tenants ... the fire proofing was in really good shape.... not to mention how much rebar and steel used.
I was told they actually intended on having the towers much stronger with heavier steel columns that would have increased the budget millions of dollars so they decided to change majority of it at the last minute. There was also speculation with the 200,000+ tons of weight from the towers not having enough support at the base. I can only imagine how this could have affected things differently on 9/11.
@@mr.amthonybarry7056 I heard that this fire proofing stuff they added to the steel parts had never been tested or scrutinized by the authorities. Because in case of failure the architects and engineers would have been forced to start from scratch basically. That was no option because they already spent so much money on the project that it became too big to fail. And since the Port Authority had been more or less exempt from New York building laws, they had the freedom to go on without testing the fire proofing.
@@SouthsideArchives They knew exactly how to pull all three buildings, the only towers in existence to ever have clasped because of fire.
@@jeffjansen582 Delete your comments, you sound stupid.
So sad to find out Joe Pesci was involved.... Or maybe he was just practicing for a role as a building inspector.
Lol
Glad I'm not the only one who thought that 🤣
KEVIN!!!!!! The wet aka sticky bandits plan to rob the floor were foiled again but this time not by a 12 yo
Gee you don’t realize how big a plane is until something like that happens. Rip too everything and everyone lost that tragic day
It's funny how at the beginning saying the date he almost says 19__ instead of 2000 and one. Understandable, he spent most of his life at that point in the 1900s
I have always heard about and seen diagrams of the trusses, but wow, you don't appreciate how thin they were. That, plus the metal underfloor of the floor above, would have been an oven.
Plus the concrete...
Thats why they jumped!!! The inside temperature must've been like being in an oven times five!!! Plus, they couldn't see anything. I think those who jumped were so happy to finally have some fresh air
@@Benyikokopushed.
Fell.
Slipped.
THanks for sharing a rare footage!
I take it that you didn't read his description... Read carefully regarding his conspiracy nonsense :'(
Omg, this just shows the importance of filming/photographing everything all the time, which I already do.
"In 2000, Harris Beach moved its New York City office to the 85th floor of the South Tower at the World Trade Center. At the time of the September 11 attacks, it was the highest floor in the impact zone where United Airlines Flight 175 had struck the tower. Most employees were evacuated but six employees-five lawyers and a construction manager (Hector Tamayo) supervising renovations-died."
Not sure, but the one who died might be the narrating. He sounds like a supervisor.
He does seem to be in some sort of oversight/documentation capacity, especially considering his extensive knowledge on individual columns' and trusses' identifications, and how clear and thorough the video is. It definitely feels to me like it was taken as part of the renovation less so than as a personal project.
What line of work did Harris Beach do? Ebasco Serivces had this floor along with 12 others in 1979. I worked in the 86th floor. I still miss the Towers.
From 1979 to 1992 Ebasco Services, Inc. had offices on this floor. I loved working there. New York is nothihng without them.
Exactly 18 years ago today, this video was recorded.
ALWAYS FELT LIKE the ceilings were too low , for anyone to assume that the type of insulation should have not been blown off by such an impact is insane and the fact they both absorbed impact fro a jumbo is amazing
It looks like the insulation just falls off in chunks. There is lots of what looks like earlier repairs. It seems to me like a thorough inspection would include tapping the beams and trusses to se if something comes off. It needs inspection from the top as well. I doubt this is the entire floor inspection in this video. You can see the water sprinkler system which didn’t work because the water was cut off when the planes hit. Who knows how things would have turned out if they had worked.
Davi Edmond buddy Hey jumbo jet doesn’t change the fact that it is made of aluminum and this is the steel & concrete reinforced Building doesn’t matter about fire proofing. Immovable object always wins
Davi Edmond by the way the fuel burned off within seconds never got hot enough to melt steel. Period. It’s just not possible! Do you think it’s a coincidence that David Rockefeller who oversaw the construction of these buildings was featured on the cover of Time magazine and on that cover his watch said 911. Come on these people don’t deal in coincidence
taledarkside ah it’s a fact jet fuel exploding into a cloud would burn off within correction tens of seconds ! I will take and a immovable object any day you’re simply stating a train because there’s a lot of weight behind but then I can turn around and say I have 1000 foot steel wall who’s going to win. The plan was made of aluminum. I am a physicist and you were clearly no scientist. Unless you filled out. The narrative of that day is impossible. The firemen stated over and over they heard explosions on the first floor!!
And you still can’t explain building 7 !! There was a tiny little fire that could’ve been put out easily still would not explain entire building collapsing from the bottom up. Grow up you must be a millennial. Follow the money buddy the growth of government the loss of freedom the loss of liberty this is what happened that day and it was perpetrated by the Bush family. Consequently Jeb Bush was in ceo of security company inside the twin towers. You cannot win this I have investigated this for 18 years
taledarkside btw Google the jet plane going 500 miles an hour hitting A 5 foot thick concrete wall that jet disintegrated Barely scratching the concrete.
Where are the black boxes? Do you really believe the 9/11 commission statement that the planes atomized ?? All 4
Space shuttle Columbia broke up at 17,000 miles an hour with the debris field of 70 miles and they reconstructed it found body parts, people’s belongings. Yeah in Pennsylvania none of this was found not even a titanium engine!! Grow up wake up investigate your trust in government.
These things are not possible.
There is the possibility that you are simply work for the government
the designer of WTC was afraid of heights, one reason for small, narrow windows, that gave you a more secure feeling as you walked up to the windows,...saw that in a wtc documentary.
and I agree with one comment that says the offices seemed claustrophobic. in other documentaries about 911 as some mentioned the fireproofing was blown off at impact since it was not adhered very well, but i wonder if any fireproofing would have been e nuff with all the jet fuel that was on fire, just a shame that someone is mean e nuff to crash planes into any building to hurt innocent people.
thanks so much for uploading!!! i always wanted to see what the inside looked like and i've never been inside!!! THANKS & If u have ANY more pls upload!! :)
This video is gold.
Everyone is bitching and moaning about how the trusses aren't huge, but if i remember correctly, most of the support came from the steel forks between the windows. Like an exoskeleton.
Most building use the concept, get rig of the skeleton you get rid of the support
You're exactly right. Instead of it being a continuous steel frame throughout, the architect and engineers created an exoskeleton of sorts that carried the loads and stresses. The failure came when those cross truss beams weakened and sagged, pulling the exterior walls inward, thus causing the collapse of the above floors.
@@aurevoirugootubee3927 and where did you get your information from?
@@krissythompson541 finally someone with some common sense.
The buildings depended on two sets of load bearing walls: the outer set was in the steel framework that formed the towers outer walls. The inner set was in the steel and concrete core that contained the elevators, stairways and utility corridors. The trusses were the bridge between the inner and outer supports.
they used spray on fireproofing when the towers were built,eventually after 33yrs it breaks down and needs to be replaced.
keepmacin Spray-on fire proofing is used today. I’ve seen it done. It looks like wet newspaper.
It seems as it was "dried out" by something.
The 93 bombing knocked off a bunch from what I understand.
Note: There was ZERO asbestos in the South Tower! Not one floor in that tower ever received ANY amount of asbestos as it was banned by the time the construction of that tower was done. There was asbestos in the lower floors of the North Tower, though efforts had been made to remove/replace it over time. So much ignorance on display here in the comments and by the person who posted this.
Reminds me of the low ceilings and claustrophobic feeling of the Indiana National Bank Tower in Indianapolis Indiana. Considering these towers are huge the floors themselves and offices are narrow, crowded, and cramped with low ceilings. They look beautiful from the outside but when looking out of the narrow windows there isn't much of a view. Also one thing that struck me was now small, cramped, and narrow the stairwells were just like the World Trade Towers.
welcome to new york city, selling apartment, 3 square foot, 3000 $ per week. And when you get these it's actually 1 square foot... "loss factor"
Being less than two months before the attacks, I wonder if those poor workers were still there, and if so, if they made it out.
They were there
Deanne Williams oh fuck =[ were they taken by that day 😔 I’m really hoping those guys made it out or weren’t there when it happened cause you can’t not love jolly dudes being being dudes with their coworkers 😢 it’s just sad
@Rico Suave
I guess "its better to be at the table then on the menu."
5 people died on that floor
Just goes to show how easily that fire protection was broken loose from the beams on the planes impact. It was falling off on its own in certain parts.
I'll guarantee you when the planes hit, all of that fire protection was blown off all of the beams. So sad this had to happen. I still think there is a chance it was an inside job.
@@Bbendfender It was a Black Flag operation.
@@jeffjansen582Posting complete bullshit under each comment.
I’d hate to think about the guys working, and if they were still there finishing a project when the plane hit.
Horrible! Just Horrible! I can’t imagine the horror all those people felt. It’s too horrific to even imagine it
As a contractor, I would never allow my job site to be that messy. Cleanup should happen every day. I am also bothered by so many breaches in the fire proofing coatings on the steel members. That being said, when the plane hit and exploded, much of that fire protection would have been blown off, causing heat to weaken the steel, which caused the building to collapse.
A lot of that protective coating fell off after 93
I've seen much worse on job sites! It wasn't that bad. The so called jet fuel that was burning in the tower can not melt steel beams. It would have to get to atleast 2300 degrees, a jet fuel fire temperature can only reach 1200 degrees. So the apparent plain that hit the tower would not cause the building to collapse the way they did. What's real fishy is that the wing on the plane was able to rip through steel columns a airplanes wing is aluminum and is the weakest part on a plane. It's not possible.
@@loganw1997 the fuel from the 'plain' didn't melt the steel, it weakened it. As for the perimeter columns being pierced by the wing, it's called velocity. The columns also tapered up the towers so they were thinner at the point of impacts than at lower levels.
@@pelnapkins4379 When an aluminum structure hits a steel structure there should be some sort of collision at the point of impact. The wings on airplanes, is to weak to cut right through steel beams. The steel, should have cut through the Aluminum wing! Instead what we see in the videos is the plain go right through the the tower like a ghost. It seem to melt into the Tower! The wing doesn't snap back and fall to the ground like it should, the nose of the plain should have crumpled right up! The second it hit that structure. The Physics just doesn't add up. Why is the plain passing through at uniform motion? The plains wing would not slice through box steel columns! No matter what speed at impact BTW a Boeing 747, cannot fly 450 miles per hour, at a Height of 1000 feet in the air it's literally impossible. The air is much thicker the lower u fly u would want to fly at a much higher level to reach that speed. Wtc tower 1 and 2 where 220 feet wide. So are you telling me that a Boeing 747 can fly 400 mph at 1000 feet, and the target is 220 feet wide and it hit dead on. 🤔 impossible.
@@loganw1997 we have no idea what the planes did to the internal columns, we can only speculate. We do know however that the planes did penetrate the perimeter columns because we can see it with our own eyes! The planes that hit the towers were not 747s, they were 767s which have a wingspan of 170ft. You obviously have your opinion and I'll leave it at that mate.
Journeyman sprinkler fitter here. It's a shame the plane hit the water main riser and took it out because I believe had the standpipe served those heads that more people would have survived
13:26 the material looking all rugged and stuff reminds me of the underwater footage of the wreck of the titanic except this is filmed before the events of what was going to occur meet months later...
Not even realizing that 2 months later none of that is gonna matter 😣💔
All the work and inspection for nothing
The truth is the only thing in this life that natters, hopefully humanity realizes this before it is too late.
So eerie because they are standing on a floor that will be in flames and one of the floors that the plane hits.
United 175 crashed between 77-84 floors.
WTC 2 The South Tower The 85th Floor was on repair until 9/11 ruined the both Towers
Those poor victims in those buildings!! I can't imagine what it was like in there.
Like some highrise version of hell itself.
The beams at the Port Authority bus terminal on 42nd st has the same fireproofing on the support beams. It has the same elevator music too.
imagine that falling on you
Times how many floors there were
imagine being prepared to burn to death, then seeing the floor above you start coming down.
@@WalnutSpice wouldn't of even seen the floor above coming down, would of been so quick ...
jukodebu imagine all the people
it's easy if you try
Damn,all this work for nuthin..
The inside of the building does look very weak and with all the weight coming from Floors above it seems perfectly believable to collapse
It is impossible to collapse.
This section held up alot better then some of the photos I saw. The buildings were built right when asbestos was being phased out so the spray on stuff just wasn’t the same.
So many "expert" opinions about the collapse of the WTC buildings. I have an engineering degree and I own a company that applies sprayed fire-resistive materials (SFRM), to structural steel buildings every day. I have 38 years of experience in the industry. The SFRM you see on the trusses is a mineral fiber based product call CAFCO "Blaze-Shield". This product was replaced in the late 80's by a product called "Blaze-Shield II", which is still manufactured today. While the mineral fiber based products are still used, other gypsum and cement based products are much more prevalent in the industry today. Ask me anything.
They don't want to know.
So could planes have brought the towers down?
IImagination The fires brought by the planes brought the towers down.
+beachcomber2008
NEVER in history has fire brought down a skyscraper.
Except WTC 1,2 and 7 but those don't count because those were controlled demolitions.
RFI-Crypto Lab Leave your parents' computer alone.
It don't take much to knock the fire proofing down I remember working in Newark and putting up the the drop ceiling and that stuff would fall really easy
Looks like that space was still in construction mode at time of 9/11. That is a lot of work that has to be done.
This building looks claustrophobic. Ceiling is low, only two exits each floor.
Ceiling was 8 feet from ground, that's taller than most peoples ceilings in their own homes
@@FireTech7 standard residential ceiling height in the US is 8.5 feet, with 9 feet and above not uncommon. Only crappy old houses have ceilings lower than 8 feet.
Standard office ceiling height is 10 feet. An 8 foot ceiling is low for a house and extremely low for an office.
@@Polychromophilia I don't see what the problem is... They aren't going to be hitting their heads while they are standing up
@@Polychromophilia Typical ceiling height in homes until very recently has been 8 ft. Precut lumber is literally made for 8 and 9 ft ceilings, I think 8.5 would be financially unwise decision lol. Typical height in schools and offices is 9'. Yes it's low, especially now, but it was just the way things were in the 60s.
The more interesting thing to point out to me is the lack of clear space above the ceiling, which is hung immediately below the trusses, requiring everything to run through the webs. I've seen very many mid-century buildings renovated with _lower_ ceilings just to make space for larger ductwork and other building systems.
Holy crap! All the people yammering about how the jet fuel couldn’t have “melted” the steel. You are absolutely correct. Jet fuel, or even fires burning unchecked in confined spaces for over an hour can’t MELT steel. They can, however, weaken it so it bends and no longer provides the support to hold up the building. Steel is made from iron and other alloys. Have none of you EVER seen a video of a blacksmith bending iron? Each column was designed to support a specific amount of weight. With the support of the trusses. When the trusses weaken, the column was no longer supporting its weight. Once a critical number of columns are not supporting the weight ABOVE them, the whole system will start to fail. That is why WTC1 fell first. Because there was more weight above the columns.
No one has EVER claimed there was molten STEEL in the fire. Other metals melt at much lower temperatures. Especially aluminum. The skins of aircraft are made of aluminum and melted aluminum is what was seen dripping from the corner of WTC1 minutes before it collapsed. Each floor in those buildings certainly contained numerous objects made of aluminum that contributed to the pool of melted metal, not steel, reported in “the pile.” Both Towers started out with severe structural damage from the planes, while WTC7 did not. It had some damage from when WTC2 collapsed so it took much longer for the fires to weaken enough of the structure to fail and collapse.
Now, put away your excuse of saying “people” said there was melted STEEL as a way to cast doubt on every detail of the incident. Have some respect for the nearly 3,000 people that died, and their families and friends. It is easy to forget the human suffering involved when you get tied up in details false theories and having to defend them.
Military grade nano thermite burns at 3,500 degrees, watch it burn through 4 inch thick I beams. The question is how was 500,000 tons of steel magically transformed into 3 micron sized particles of dust. To blow away in the wind, before hitting the ground. Everything else has been discovered in the last 22 years, the type of devise and how it works has not. We have clues but no proof yet.
what immediately strikes me is how claustrophobic the rooms feel. imagine the fire inside the rooms at the time of 9/11, no wonder everything happened that day
Ollie Pontone the floors aren’t claustrophobic, rach single floor had at least one acre of floorspace, that’s a massive amount of lettable floor space.
@@mvfc7637 Ollie means vertically. Imagine the smoke trying to go up, not being able to, and filling the room as a result.
110 floors suddenly doesn't seem so high
I just heard Javier Porley’s version of 9/11, he was a constructor at that time in that floor . And while he was talking I was imaginig about how did it look like. This video is gold.
He is an Uruguayan survivor 🇺🇾
ua-cam.com/video/We0ufDmG57g/v-deo.html
Imagine if Facebook live was out then
If Facebook live existed back then, everybody in both towers would be going live and we would see what the view inside the towers during the attack would look like. It certainly would scare the shit out of many people.
I’d rather not.
@@musicman76enator nah they would burn with the phone
if you realize that exactly where he is filming, the 2nd plane has flown in :(
This should have just been a boring video hardly anyone would have seen. Instead, thanks to the unthinkable it's now a piece of history. And a glimpse back into happier times.
4:17
and that's why the whole building collapsed
Total Fabrication. A steel structure never before or after 9/11 collapsed due to fire. If The structures collapsed due to the impact of the planes , the structure would have collapsed to the level of the impact as the floors beneath the impact zone were not structurally compromised. This was an inside job . Controlled demolition. the planes flying into the towers was a diversion. For weeks leading up to the attacks the buildings went under "maintenance in the core of the structure. Hundreds of civil engineers echo the same sentiment. Compare the collapse to controlled demolition.
@@JP-uu2rw No, you just don't understand any of it, so you made up an alternative cause.
@@JP-uu2rwthat's the thing I never understood. Like I totally get the temperatures got so hot it softened the collumns and could collapse. But I never understood why it didn't stop at the point as impact.
As you pointed out the beams below impact weren't compromised. There was no extreme heat to soften the supports on that part of the tower.
I've watched videos of the tower collapse and in one recent video you can see the towers main center support collumn standing after everything fell around it. Then suddenly starts to fall then disintegrates. No collapse or amount of fire is going to cause the entire center support collumn to disintegrate into dust in ten seconds. Especially the part that wasn't structurally compromised.
Weird the place they were standing on is now just a piece of sky.
To think a mere two months later it all would be debris and a burning twisted wreck. God rest the souls of the victims and may the families and friends of those lost find peace all these years later.
No wonder the fireproofing didnt work, half of it already fell off and the other half was degraded beyond belief.
It wouldn't have mattered after the crash even if it were 100% intact. The fire protection is for a 'regular' building fire not one caused by a fuel ladden commercial airliner.
That said, most that fell off after 93
That looks like asbestos sprayed all up on there. Was that how each floor was created for fire protection, back in the late 1960s?
Not all, one was fully done, the other 3/4. Part of why people think it was controlled demolition was to get round the asbestos removal and updating the towers to modern standards.
@MTG Zombie Silverstein had a single tower design ready months before the planes hit. Building 7 fell without a plane, the twin towers falling in their footprint seems just odd.
@@arjanwilbie2511 There is asbestos present in damn near every building built before 1980. There are no rules stating that it must be removed. In most cases it's actually better to leave it alone.
Albert ricks it’s done that way today.
TatersUnited It’s obviously easier and more economically feasible to just kill a whole lot of people and have to pay victims compensation money and spend millions if not billions on cleanup work right? It’s not “getting round the asbestos removal” if that asbestos covered everything and everyone upon collapse.
Brian Clark is one floor below this
So the only she columns were the out side walls and center right so minus the out side pillers after plane took out a good section, the weak floor joist just gave right which caused a domino effect. Which is why the building seem to implode On itself and when it reached the ground it pushed the walls outward!
The red wire is fire alarm system wire, the blue is communication/computer wires, the white is intercom/phone wires. Black are fiberoptic or coaxle cable.
FP200 😁
The floor trusees were no match for a Boeing 767 at speed
What about a Boeing 737, which is what it actually was...
This video is reminiscent of a dive into the wreck of the Titanic.
Quisiera. Entender El Inglés, Pero Lo que Alcanzo a Comprender Hombres Estaban Trabajando en Ese Piso Como Mantenimiento, y Oh Desgracia Poco Tiempo Despues
DIOS BENDIGA A TODOS HERMANOS 🙏🙏🙏🙏🙏🙏
Sí que mal che....nose bien pero aparentemente en esos pisos fue donde impactó el avión.
So, where are all those bombs?
In your mind.
@@rinse-esnir4010 I know there were no bombs. It was a question for truthers.
Just a few bombs, they probably weren't installed on this floor.
@@martygras378 this floor is literally in the impact zone, you guys call your selves "open minded" yeah right like JFK, if get a better theory please
@@user-zp4zl8cp1n If they knew where the planes would hit, there would be no reason to have bombs on those floors.
Crazy to think that they probably came close to completion on these renovations if not got them done only for it to go up in smoke and come crashing down not even 2 months later.
Brings new meaning to the expression “All For Naught”
it looks a mess..amazing all the crap that is hidden behind your walls and partitions
timexironman100m you try building a building like that then
The mess you are talking about is fire retardant material over the building structure
That mess is cancer causing asbestos
@@totowolf9716 the WTC was built in 1973 asbestos was outlawed in the 70s
Angelo Caputo wrong...the production of certain building materials was banned such as dry wall and ceiling tiles but no it was never banned completely and especially in commercial applications such as fireproofing...to this day it’s still used in bings like brake pads...also there was still plenty of building materials in stock and commercially available after the ban
I miss the World Trade Center
So was the enter floor spans just these weak trusses. No solid I beams every X feet? If so, amazing they could take the impact without complete failure!
it’s because the building was held up by the outer structure. the only support inside was the inner columns where the elevators were. i go back and forth on the conspiracies. sometimes i think there were bombs but then i see a video like this and realize the buildings weren’t as strong as many believe.
@@drinkingpoolwater No they were stronger, the core took most of the load.
Fire installation wouldn’t have mattered. A commercial aircraft with a full tank traveling at 500+ an hour took those joists out
between 1.00 and 1.10 when looking out of the far left window, it looks like grey brick work. would that be the corner of the other tower?
That indeed looks like the other tower
Very interesting. If that much fire insulation had just fallen off from poor adhesion how much more fell off when a plane hit at 500MPH ? Some areas look as if they had been patched up before. I wonder if 9:24 got repaired before September ?
The fireproofing matters very little if explosives were used.
@@martygras378almost like it was hit by a 767 going 500mph dumbass
Get that tin foil hat off@@martygras378
I'm 0.37 in and I hear "85th floor" and "fire protection". I'm looking at a room that needs considerable amount of work because it honestly doesn't look safe.
TruthSeeker08 this is before the fixes. Read the title. This building was also up for almost 100 years by then
@@eljefe114 WTC was built in the 60s, which is not 100 years ago.
Ninerz 415 100 years lol what, it was like 30 years old
@@YellawayHD lol he probably from the future
8+5=13 it is an occult ritual. Case closed
Have not read all the comments, but this video was taken so that someone would come along afterwards to REPAIR the areas without fire proofing.
The fire exit stairwell closest to where the cameraman is filming was the one left intact after the second plane crash. There is a good chance whoever was working in this freshly renovated space got out alive.
TBF it wouldn't have mattered how much fire resistant foam on the beams again this was not set up for a fully fuelled passenger plane to hit it at subsonic speed it would have been blown away the same if you where blowing flour of a counter?..the fact is the building is is fire resistor the likes of electrical fire or if if papers catch fire..by that time a hero from the office would have put out the flames with an extinguisher...dont quote me on spelling lol but you get me!!!..not a passenger jet full of fuel...surprised the building didnt collapse on first impact TBF..plane ripped through most if not all of the support columns?
It's obvious from this video that those thin flimsy floor trusses and corrugated steel decking was not fit for purpose, and easily the weakest part of the structure. Not to mention they were only bolted on to the outer core and perimeter columns by small and spaced out angle joints.
This engineering flaw was a big part of why the towers came down. The impact, shredding, explosion, and fires, all played a role in causing enough trusses to fail that the sagging was transferred to the perimeter columns and core until the overhanging structure gave way.
It is important to note that these buildings were built in the early 70's when this revolutionary "steel tube" technology had never been done before, and at a time when commercial aircraft had not been known to deliberately smash into stationary structures at top speed.
One of the few positives to come out of 9/11 is that all visibly high towers and buildings in the developed world are now built to the strongest of standards with regard to aircraft terrorism. I don't think it'll happen again, but there's still no room for complacency.
so, would it be possible to take the design of the Twin Towers and make them alot stronger, but still looking the same on the outside?
@@kaisertrinityt.m.i.s1607 The answer to that is yes. If the internal office space had cross columns in addition to the perimeter walls and the core they wouldn't have fell.
Anyway, the old WTC's were not that attractive and NY'ers didn't like them during the 1970's when they were first built. It will be the same with the new towers, they will become gradually more accepted with time as people get used to them.
It was decided not to rebuild the twin towers in the immediate years after as it would not duly recognise the scale of the tragedy or provide a sense of renewal for the city.
@@demonhalo67 yeah, i wish they would have rebuild the twins. my idea to make the twins stronger was to give the inner core an additional strong concrete skin, followed by one or two rows of pillars between the core and the outer facade. then of course, as you sayed i would add cross beams inside the floors and reinforce the connections between the floor elements and core elements. and for the last part i would add a better water sprincler system in case of a fire
@@kaisertrinityt.m.i.s1607 hindsight is such a beautiful thing
Its worth noting that the towers were designed in the mid 1960s. Construction started around 1967. They used new engineering methods that hadn't been really tried out yet. The largest plane at the time of design was the Boeing 707. That's how early these were. So much of the engineering and building methods were archaic at the time of their destruction.
And this fireproofing proved to be inadequate when the planes hit at 500mph
Thank you so much
Two months before 9-11-01. Wow
This examines the sprayed on fire proofing, essentially asbestos and a binder, which had the dried consistency of crumbly plaster. The airplane impacts and explosions blew off nearly all of this coating throughout both towers' impact zones. The continuing fires weakened but did not melt all exposed steel. Critically, the bolts which secured the floor trusses to the outer columns and inner core began to fail. The concrete floors played the structural role of stiffeners to the outer columns. As floor sections fell in the impact zones and the outer columns deformed, the damaged inner core could support only so much weight from above before it collapsed. That's why the south tower fell first: United Flight 175's lower hit left more weight above the impact zone.
Great story, huh?
The fire could not get to enough temperature to even weaken steal, cmon. The jet fuel was gone like in seconds. I always wondered how could some people to survive plane crushes, but because jet fuel burns like in 10sec, there is real change to surviving the plane crash in some cases. Office fires were starved of oxigen and could not been that hot. One firefighter who got about 70th floor had said that if he had some tools it would take few minutes to get it out.
Jeff Campbell correct...thank god !...I’m so tired of hearing this conspiracy shit it makes me sick
Great story but I'm still confused... how did the fire weaken the floors below the impact? Why did the buildings fall so fast, shouldn't the 70 stories below the impact slow the fall? The steel was bigger, stronger and thicker the closer to ground level. I can't buy your bs, sorry.
++ mrsmerily.. Each fireman who saw flame probably had the same idea about the ability to put out a "small" fire that was right in front of them. Problem is (was) there was MUCH more fire in other parts of the building (all the floors above #70) and it wasn't going out by itself in the 10 seconds you speak of. The 20,000 gallons of fuel they hold is more than two of those gasoline tankers you see on the road, which if burned in 10 seconds would have blown the tops from the buildings instantly. Good chance the fireball we see was from the fuel in the wing tanks and the belly tank just leaked into the elevator shafts for a slow burn over another hour.
It’s crazy seeing that now all the steel columns shown are now all over the world.
video shows how lightweight was the construction - no way could it absorb shock of jet strike.
@петр ольгович you are fool who knows nothing.
“Jet fuel can’t melt steel beams” well that may be true but that type of explosion could 100% destroy this flimsy truss work
Exactly.
Dum dum truthers should ask themselves why they’re fireproofed.
Wrong,jet fuel can't generate the heat required to melt steel..fact,don't take my word for it, research it yourself,silly to put shit out their without checking the facts
Ciaran Mcilwee
Fascinating.
Why do they spray fire resistive material on all steel beams in every steel framed building?
Awaiting your informed and educated reply.
@@clownpocket fire proofing adds time for the responders to control or knock down a fire. Although steel beams have been known to survive fires it's also not uncommon to add a extra layer to the beams that can prevent the fire from weakening the structure.
Heated steel looses strength as it becomes hotter, the spray is just a heat sheild.
Although I'd say a plane slicing threw the tower would likely strip most of it off, the shielding is actually quite brittle.
Firefighter reports and survivors reports stated some floors were dropped on impact which would mean less is left to support upper floors by theory.
James Luck
No arguement from me.
Let’s see if the truthertards have a response.
What's up with the electrical wires strung randomly all over the place? I'm not talking about the ROMEX I see used for temporary lighting & receptacles or the communication wire like CAD-5 and Shielded coaxial cable, I'm talking about the strands of current carrying single conductor wires. A building like this would REQUIRE commercial wiring meaning ALL current carrying electrical wire would be enclosed in conduit and junction points enclosed in metal boxes with metal covers.
Rigged for demolition bro.
looks like its for hanging drop ceilings
Preparations for the big day 🎆
If you look more closely, you can see that they are rattlesnakes which were being stored there so that on September 11th, the snakes would escape and bite anybody trying to flee the building.. 🐍🐍🐍🐍🐍🐍🐍🐍🐍🐍🐍🐍🐍🐍🐍🐍✈️✈️✈️✈️✈️✈️✈️✈️✈️✈️✈️🏥🏥🚀🚀👽🙌🙌
You guys have never seen an office before ceiling tiles are installed. The wires are not electrical and in fact some of them are smoke detector wires coiled up because the detectors go in last after the tiles are placed.
I got underwear olda than you! haha. love the site banter. but also appreciate the survey work here. Does anyone know how the intumescent foam reacts? 5-10x? so small 2-3" bare sections of steel would be permissible?
They were going through a remodeling process not sure what point they were at but I do believe they were upgrading the fire alarm systems around this time
Same trusses at Walmart. Surprised the building stood for the hour.
Yep. Fine design until hit by 767s. 😕
@Gregory Dahl Those walls were 14 inch box columns, about 5/16" wall thickness. Nothing to a 141 ton airliner moving as fast as a bullet. You need to take a physics class.
@Gregory Dahl The trusses at the towers sagged from the heat. Doesn't matter what you think they were, the fact it they got too hot. This is seen on video, it is undeniable.
@Gregory Dahl You're an idiot. The only columns that were 2.5" thick were the core columns on the ground floors. And guess what? 141 tons at 585 mph would destroy those too. As I stated, learn some physics.
@Gregory Dahl Ok. You go live in fantasy land where only conspiracy nuts that get their info from UA-cam are right, I'll stick to the real world.
So Joe Pesci was a builder
12:32 to faw thoity nine two yoots
So flight 175 struck this building between floors 77 and 85. These guys are working on floor 84 less than two months before. Makes you wonder if they were there that day or if their work was done and they were lucky to not be there.
They were probably done. These guys work pretty quickly because they work well into the night. The night for them usually ends at like 11 pm or midnight. For a room like this will take them about 3 weeks. Then they move to another room. So maybe they were there just in another room that needed work.
It makes me feel ill to think of all the innocent people that perished in the most horrific ways the day the twin towers fell
When the entire floor is on fire and the sprinkler system has been severed the entire building stood no chance, the fireman had no way to put out the fire therfore the entire floor collapsed do to the raging inferno from inside and the winds from outside fed the fire with more than enough oxygen due to the winds at that height, the winds acted like a giant bellow going through the opening the plane made when it entered.
no replies as this is the only REAL information vs all of the conspiracy idiots
Do believe the small hole with no aircraft wreckage at the Pentagon was caused by a 747 Airliner with hundreds of seats, luggage, massive tail section and indestructible engines the size of buses?
Don't change to September
Why does it look like black pipe is used for the sprinkler system? ( I thought that's normally for gas or air lines, not water) shouldn't it be galvanized pipe to avoid rust?
no fire protection would have been adequate given thousands of gallons of airplane fuel exploded and being hurled ablaze in EVERY DIRECTION.
Had nothing to do with the collapse.
You got a high school gym roof holding up the major support columns. Good luck with that.
Your contradictory comment amuses me. But anyway, it's the other way around... The support columns hold up the 'gym roof', hence the name 'support column'. The 'gym roof is only designed to hold up the floor, and is tied to the inner and outer support columns. It's a good design... until you crash a plane into it at 500mph.
@Warren Bain with all due respect... That's complete bullshit.
Never before 2001 had a passenger jet been used in a suicide attempt as a weapon.
The building was designed to withstand a single plane impact at low speed, with low fuel.
In case you didn't notice the building did withstand something much beyond the design scenario, which is impressive... Until it eventually collapsed.
Well for the materials used back in those times vs the huge planes we use today,
@Warren Bain architects don't design the towers to withstand plane impacts, engineers do that. And the chief engineer of the twin towers stated that the towers weren't designed to withstand the impact of a fully loaded passenger jet traveling at top speed.
But even besides that: if you only look at the damage caused by the plane impact; how can you even argue that the tower was designed to withstand that.
@Warren Bain was designed to take multiple plane hits, but yet was at risk of toppling after one car bomb brought down multiple floors, the port authority stated they where in a race to secure the structure after the bombing becouse of a unstable base.
The architect didnt seam surprised by the fact that the building was in such bad shape, more surprised that a bomb was brought in.
Who knew that two months later that would be no more!
Those in the know
If it was a controlled demo why did the top 15-20 floors fall as a complete unit? Did the explosions not work on these top 20 floors?
Most likely once the jet fuel weakened the trusses the weight of the upper floors finally after hours & hours of burning came down forcing the remaining floors to collapse like pancakes.
Building 7 took massive hits from debris from towers- fires internally burned for hours. Anyone here believe that explosives could be in a building that was on fire & burning but did not go off for hours & hours. If there were explosives the fire would’ve set off them randomly depending which one the fire reached first.
i like your thinking. one thing tho, the buildings didn’t burn for “hours and hours”. they actually collapsed after one hour. literally around 55 minutes or so.
@@drinkingpoolwaterbuilding 7 literally burned for hrs.
I don't think it was a typical controlled demo. They would have figured the planes could nearly collapse the building themselves, just need a few explosives for a boost at the time of collapse, and maybe explosives to take out a few of the lower supports. It's also possible some sort of high tech weaponry was used to turn much of it to fine dust.
Lets put it this way have anybody seen how they arrange pocard cards they can withstand lot of weigh depending how they arrange them so how many floors were damaged on the top ? on the bottom ther should be enough levels to hold the damaged floors on top