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- เผยแพร่เมื่อ 22 ธ.ค. 2022
- How such a massive building able to stand strong on loose Dubai soil? Let's explore all the secrets of Burj Khalifa's foundation in this video. We are in a financial trouble. Your support on Patreon is much appreciated.
/ lesics
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Thanks so much ,sir please can you make a video about voyager 1 (the space probe that travel s for more than 40 years) thanks.
is this re-upload?
Sir,Which software are you using to make such beautiful animation❤
When the oil stops flowing a decade from now that building is going to crumble down
lesics please help i became homeless cause inflation
Man Dubai is such a meme. Land doesn't want skyscrapers.. But money can solve anything I guess.
Without money, you will not pay for your treatment and you will live less than you could. The land does not tolerate anything.
God bless the Emirates
Dubai is basically city within highways
😂
@@-abhi india is a country of slams
Not money... Engineering brain can solve anything
Thanks to the people at Lesics for reconstructing the entire building for this video!
That's commitment
Not to mention destroying it several times.
I fear all the time when the building is portrayed as "Falling".............
construction reconstruction
😂
2 years for constructing a foundation and studying its situation explains why and how important a perfect foundation is for skyscrapers nice video 👍😃
@danny supersell so what bro... Everything has an end...
Crazy to think the entire Empire State building was built in about half the time the Burj Khalifas foundation took.
@danny supersell will it fall or will it be dismantled?
@danny supersell wind?
lol it has no actual sewer you know that right? I would think that disqualifies it as being perfect lolz
love that there's not really a intro to the video, just straight up to the point, no clickbait. love it
I love the use of standardized measurement units for easy understanding of scale - thickness of two human beings, depth of 10 story building, depth of 10 Burj Khalifa floors.. I was disappointed when the settlement was measured as 5 cm (approximately one small kiwi).
Science does not use measuring techniques like "a football throw" or a "small kiwi" because wtf size is small to you? Its really nice to use cutarounds when dealing with non scientific people I guess. The rest of the world just uses metric. But sticks of butter is good to I guess.
😂😂
I no understand! Small bird or small fruit?
@@akibjabed4712 or a small new Zealander??
They brought "building on sand" to a whole new dimension.
Haha he made as if this guy discovered & burj Khalifa is the 1st using piling & cathodic protection. And the electricity for cathodic protection is not giving any strength
@@hanapepe91 stupid human pretending expert 😂😂😂😂😂
i hope that building will collapse as soon as possible.
@@monsignore11 Why the hell would you want that?
@@danishsiddique5734 itd be funny
I work on ships as an electrical officer and this exact method is used to reduce corrosion of hull, it is called impressed current cathodic protection.
Older ships used sacrifical anodes( zinc anodes placed at location on hulls ). Intrigued to know that its also used in the world tallest builiding.
We also use it on bridges to protect rebar after repairs to the concrete
How would it be replaced in such a tower?
How did you end up doing this career? Always interesting when people do unique stuff like this
hahaha, You fixed the misconception I had since I was a kid. I spent my whole childhood in my father's shops, selling fishing and boat equipment. We sell these zinc anodes, and I didn't have a clue what they are used for. When I asked my father, he said something like "Maintenance stuff, shut up and get me those ..... " he wasn't mean, just busy working. One client said to me, " to put under the boat ... " I imagined that it might be something to be "consumed" and the take brunt of the force instead of more precious equipment (like the propeller's axis .... ) I Never thought it would oppose corrosion. I feel stupid for thinking that all these years.
@@momentum680 I did my engineering in electronics, found out that the industry is very small and there are no jobs for me, thought of moving to a different country but had no money, so was searching for jobs online so i found out about this, i did various STCW courses and ETO course i scored well in the courses (obviously i did want to be unemployed) got selected for a company and now i am here sailing the oceans on a tanker vessel.
I think another design to overcome the wind striking the Burj Khalifa is actually the shape of the building itself the engineers called it somewhere in the lines of "Fooling the wind" and the design is a sort of "3 leaf clover" and as it goes up higher each petal gets smaller and smaller in a rotational order this design basically prevents vortices from forming on the sides of the building...
that was quite a rough explanation of what I know about the tower design so I hope you understood at least a little bit
Led me to think
Aye. Same with the One World Trade Centre.
Same as the sears tower really just not as organic cause it's only half the height
Kudos to all the Animation Software Designers and people who worked on that video 👍 Amazing job ✨♥️
I absolutely love how you make a 3d model of the creator and use it for the demonstrations, so awesome.
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"Ok guys, it's time to connect the building to the sewage system..."
"What sewage system?"
That tiny detail ahhahahhahha
Dubai porta-potty
@@richardchambers3533 don't Google it
They already have one 🤡
Thank you sir for the wonderful explaination.... I'm astonished by the amount of work and effort but that explains how this marvellous structure has been standing this long .
A marvel of engineering design with some very patient intelligent and hard working labor force behind the construction of some of man-kinds most incredible building structures. The "everything" that goes into making these tall buildings stand up into the clouds is unbelievable for a majority of those who are not familiar in the construction field. Thanks to the people who put together these videos and for those that have the pleasure to watch them, its great that you have described the details of such in layman's terms(simple and easy to understand). Otherwise there would be a lot of questions that I'm sure would be overwhelming itself, let alone the questions that arose before they began the construction process on such an enormous achievement. Incredible.
I have so much love for engineers & technicians who made this happen...
amazing how much work and effort has been put into this building!
I counted 3 times when Burj Khalifa dropped to the ground and shattered to pieces. That was nice to watch.
@@StellarSurge built by slave labour.
@@StellarSurge some people just want to see the world burn
@@arielvaldman 😢
lesics goofy ah animation
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Wow, my standing ovation to the hardworking minds of the engineers
Interesting steps they took to offset the concrete temperature rise while it cured (Ice & night pouring). Many of the "rebar" at Boulder Dam were pipes. After a section was poured, they pumped cooling water thru them so the heat could be rejected using external cooling towers. When finished, they filled the pipes with concrete. Impossible to do a single pour for Boulder Dam - too big. Instead, they made each section a complex shape that interlocked with the next sections.
It's called a "sacrificial anode"; all boaters know about them. We use zinc sacrificial anodes to keep our propellers from going away. Use of titanium is very interesting.
Was wondering how do they determine the right amount of volts and amps to use for Cathodic protection for any given project?
I immediately thought of Boulder/Hoover dam when they mentioned the sectional pouring. Thanks for that explanation.
All the large Asian dams I studied used ice to cool concrete to dissipate heat of reaction as the concrete set. Even in the middle of winter, pouring concrete for railway piers on permafrost need ice, again to dissipate heat so as not to damage the permafrost.
@@lii1Il Good thinking. It seems the balance is delicate and time will tell us the exact amount, when the building collapses.
Zinc or aluminium anodes are used in salt water, magnesium anodes are used in fresh water. The anodes must always run parallel to the length of hull. Zineti, S.A.
His thumbnail is my childhood imagination, thanks for completing it 😌
Thanks lesics , Now I can make my own burj khalifa myself DIY. I had the same problem with soil but when i searched on youtube this video cane up . Once again thanks
Possibly the best overview video on deep mat foundations that I've seen.
One question - why wouldn't they use a composite rebar to avoid the issues with corrosion? In theory it would be much less complicated, lower maint, and less expensive.
If we didn't have smart people like this. Humanity would be no where. Phones, internet, cars, etc. Just crazy to think about
Awesome video... I could watch those kind of videos all day... So as long as you keep producing.. I'll keep watching...
Wow. This is highly impressive can't still wrap my head around it
Cathodic protection also used on underground fuel lines at airports.
Awesome video. Great animations and well explained!
thank you very much for all your amazing informative videos! :)
Thanks to this video, I realized how vulnerable the building is.
I am definitely sharing this with my friends when I get back
I work in engineering and work on piles, concrete and reo. I think this video provides a very good basic overview. The geotech side iften gets over looked but is essential.
Amen.
Your 3D animations are amazing and quite easy for me to understand things. Loved it❤ one request, can you make how petrol pump nozzle auto cutoff works in 3D? Please😊
That would be neat. And if you haven't yet, pls check out Steve Mould's vid on that subject. That illusrated for me what happens in that pump that I've been using for years.
Yes I can
You have to appreciate the amount of work and thinking that Went into that building
Amazing truly. Looks like basic foundation but crazy how they must account for the salt water. That’s some big brains on the job
This is an incredible engineering!
Interesting....never knew it's foundation needs to carry electricity to prevent seeping sea water from corroding it
same here.
i would have surrounded the rebars in a pool of crude oil instead🐱👍🏿
I guess is risky and expensive solution that almost nobody would do it. This building is there just because prestige, noting else
Boats also do the sacrificial anode thing! And i think some docks too
Kudos to the engineers and workers
That was downright excellent and clarified one of the many holes in my ever growing knowledge gaps 😂
Top notch work. Clear, concise and amplified all points of interest with surprising clarity 😊
The piles will be corroded anyway with time, wont it? I mean, given maybe a few centuries, they almost certainly will be. Is there a plan to rebuild them slowly in the future or something? I caught myself watching videos from the past century or two and it seems we dont ever stop and think about the future of our buildings like that, but they will be around.
Every building made out of concrete has a lifespan. The buildings are torn down and new buildings are made in their place when that time comes. The foundation just has to hold it there for that much time, nothing more nothing less.
@@akay4086 good point. But I dont think recycling the Burj Khalifa will be worth the effort. There are many buildings from the last many centuries that are still around, way past their lifespan as it is way better to maintain them instead of recycling them. That's how we come to today's town centers of almost any city. I think we should be considering that instead of counting on dismantling those enormous buildings in 80 years or so
A few centuries is very generous for the lifespan of a skyscraper.
Even if it lasts just 50 years this burj will be great advertisement
@@mazocco It just cant last for centuries.Concrete has its own limitations, repairs can only make sure it reaches its lifespan. A building on such a scale has to remain in very good condition to remain standing and once the concrete starts to reach its limit it will just become a disaster waiting to happen if its not torn down.
The concrete buildings cant be compared to the older stone building in terms of their life expectancy.A stone can last for so much longer than a slab of concrete. Its just that modern concrete make structure like this possible whereas stones cannot.
I'm curious as to how they will replace the titanium mesh anode.
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Amazing enginnering hidden in tallest building in the World. People are incredible. We overcome hardest demands.
This video has excellent clear explanations that drew my curiosity despite not being a civil engineer.
Really appreciate the efforts to explain a concept with animation.
Is Blender used to make such beautiful animations ?
They put so much careful planning and smart design into this building, yet there are still no guarantees. The universe is constantly drumming up new chaos. Only time will tell if they took sufficient precautions.
that’s with everything. Science is the testing of a predicted outcome. For it to evolve into a theory it has to work 3.5 million times successful for every 1 failure (sigma 5). Usually the mistakes in engineering were human error, not an unknown force.
Careful planning and smart design: there is no sewage system, every day a fleet of poop trucks has to do the job of a sewage system
@@TheSpatialTheory isn't that a problem of the city and not the building?
@@r-gart the building was/is hooked up to the municipal sewage system but the amount of sewage generated by such a building was not taken into account iirc
let's be honest, it's not a great idea to build a skycraper in a desert with no hard stratum, frankly the design/engineers brought this on themselves, just like when americans build their cardboard houses next to fast moving rivers and complain when the land erodes and their house gets sucked into it and complain about the forces of nature, just don't build there?
This channel really educates me about so many things I was curious about , This is what I was looking for!
Great explanation, really interesting. Funding the maintenance will be what breaks this building.
The tower may have been a product of oil-rich ambitions, but you can't deny that it is an engineering marvel.
It has a septic tank
Engineering marvel for the fact that all ingineers working in Dubai are not Arabs.
how is it a marvel when theres shit tons of trucks moving feces everyday, theres no proper plumbing
@@StefClaessen Yes if you spent your life learning about the world from youtube 🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣
Yes .. But Dubai is Oil poor !!!!!
Теперь все понятно! Я думал как так можно в пустыне так строить ! Молодцы!
Very well explained. Thanks so much!
Great to see Mr. Bill Baker hosting this episode!
This is a great video. A couple of suggested clarifications:
1. This is impossible to drill with auger excavator, it would have to be with drill rig.
2. Polymer slurry is same density as water, but has a Marsh Funnel Viscosity at that is 3-5X that of water hence the polymer doesn’t seep into the soil and doesn’t allow water to enter, provided the water head inside the shaft is higher than outside. They likely only had a small temporary casing to work around the shaft and keep up the slurry head.
3. In theory, steel is inert in alkaline medium like concrete, so provided the concrete cover is met, it shouldn’t rust - this also depends on the concrete exposure type to resist things like salt. In some cases they use galvanized rebar for extra protection or fiber reinforced polymer rebar which has higher tensile strength but brittle, so mostly used for things like TBM head walls. Having said that I had never heard of this system. Thanks for sharing
For 3. Concrete is also porous. So even with concrete cover, or even hydrophobic concrete the reinforcement bars are still going to corrode over time. Cathodic action is commonly used in offshore structures.
@@jonathanlee8162 They could have just used adamantium. Problem solved.
@@WalkDK I would think adamantium is much more expensive than steel.
they would rather just add on a cathodic action system and it would still be cheaper.
@@jonathanlee8162 well, you are probably right about that.
Awesome video! Thanks for using the metric system 😊
not all the time :(
شكرا على المعلومات 👍🏻💯
Amazing engineering and problem solving
It will topple over one day.
Most of those solutions are very innovative and sophisticated, but to build a forest of piles below a new construction is been applied extensively in Venice since its foundation to counter the downwards push on its silty underwater ground. The Santa Maria della Salute bassilica is thus built upon a forest of about one million of wooden piles that prevent its enormous mass to sink into the lagoon ✋
As a geotechnical engineer, this is an excellent description of a typical caisson/raft system of foundations.
thanks for sharing this information for future aspiring villains.
So good :) thoughtful design + accurate animation
It is so satisfying when you are from same field and you know all the terms and thing here talking about
The message is clear as the morning sets the night & raise at first light!
thank you for nice video 😊
I would have thought the ice cubes in the concrete would act similarly as air bubbles, thus the concrete would be compromised.
On reflection: the curing (concrete)would be slowed by melting the ice, while vibrating of the foundations (during pour) would work the water (ice) throughout the concrete.
I also believe that electricity from the atmosphere would also be drawn through the building to ground.
Oops: was I thinking too loud?🤔
I thought it was gonna be some kind of dynamic actuators that compensate for wind and make it all crash down if it loses power. This is much more reasonable!
The tower was constructed by Samsung C&T from South Korea, which also did work on the Petronas Twin Towers and Taipei 101. Samsung C&T built the tower in a joint venture with BESIX from Belgium and Arabtec from the UAE. Turner was the project manager on the main construction contract
Fascinating!
Projects like this show the brilliance of the human mind
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There are other buildings that have relied on friction piles (I believe SF's MiIlennium Tower is one), but perhaps not deep enough, and they failed to provide the anticipated support.
The engineers called for over 30 pilings under the Millennium and some cheap ass cut it down to 18. Insane incompetent and corrupt.
Thanks for sharing 👍
Thanks for this very well explained and informative video. An enjoyment to watch.
Very interesting! The principle used here is the very same as in every hot water tank. Sacrificial anode. Out of sight, out of mind. Every building has a final life. This will eventually open up to new minds on how to renovate or re-certify say after 40 years or so. Surfside Florida will be long forgotten when this one comes down. Btw: this building is not connected to a sewage system. Re-finance options were all exhausted well before. The Eiffel Tower is still standing because its footprint vs height does not violate the laws of physics. Standing by for the ultimate news from this region on the day to come.
Extraordinary engineering, insanely inspiring!!
Thanks for a well put video with education.
It's amizing design
They also used friction piles for the Millenium Tower in San Francisco.
Good luck!
Friction piles are fine but you have to design them correctly. In San Francisco they are too close together so the soil in between piles just gets captured and doesn’t exert enough friction, plus the building is overweight for the foundation - it was designed for a steel building, but it ended up being heavier concrete.
As a geotechnical engineer, I find Burj Khalifa really fascinating
How great must be these engineers to do this kind of stuff
Very well explained. Thank you very much.
Good explanation sir.
Watching from Bangladesh 🇧🇩
Thanks 🙏 for making my day with engineering vids😌
I was not planning to visit that building anytime soon, and now after watching this clip, even less.
Let's design a foundation system that if we do not constantly feed electricity to it, it collapse. Such a brilliant idea.
always wondered how thats possible to build such a city on basicly sand.... very good explained :) but im very curious if this rly will hold up for the next 100 years
It probably will not stand the test of time.
Given that the system needs 24x7 electricity to withstand the corrosion resistance, I dont think it is a very sustainable structure. Not only that, but even with electircal corrosion resistance, if small corrosion happens, it is still susceptible to failure and it is going to be tough to reinforce the foundations. They can probably generate the electricity needed from solar farm reserves but still as an ongoing system it is not looking good.
@@malithaw it will
@@lqlaliut897 it's not the most sustainable but it doesn't have to be
No its not. That's extremely rare to happen let alone for that to cause failure
It's looking good so far
What an unbelievable feat of engineering.
I am supposing this method has been done many times in the building of bridges. Some bridges are built over the sea that has salt water from the ocean. Pretty sure their foundation could be on sand or weak soil. However a bridge probably doesn’t have as much weight pushing down or as too heavy as this structure. To me it would have made more sense to build it outward rather than upward. That way the mass of the building is spread out making it easier to balance. I think for the tallest building record would be better built in a mountain with solid rock. 😝
Yet somehow against all odds, that building is still standing lol
Congratulations! An outward foundation would go a long way towards longevity. Ships have a practical limit of 400m. Buildings sort of 100 floors to stay within proven experiences. Anybody can bend the law of physics as long as they can run or hide.
It makes no sense for Dubai to build such tall building simply because they have plenty of space. But they can't go for the biggest dick award if they just build out.
naaaaah we could just throw a few million rocks underneath and poured concrete to make our own bedrock
@@excelsior8682 Too soon to tell.
Great technology and safety design
Very informative and i like the fact that you correctly said persian sea.
Does this mean that hydrogen gas bubbles up from the cathode, and what about reactive corrosive sodium?
You know what they say about foundations built on sand. It's inevitable. Needing electricity to keep it standing is absurd and it should've never been built.
Those engineers were paid millions. They know way more than your sorry little a§ my friend. Thanks for your salty comment tho
@@trutharrow5311 even copper that carries the electricity rusts. It turns green. Nothing is 100%. Time were corrode away the foundation. That salt water will corrode the electrical wires that is supposed to protect the foundation. But you are right. The engineers were paid millions, and those dumb Arabs were suckers for it.
@@trutharrow5311 And one more thing to add to my earlier comment that the Arabs were suckers. Those engineers might have been paid millions, but they forgot to install a sewer system in the building. The building's poop has to be hauled away by trucks everyday. So much for your engineers.
@@henripan9584 jealous much? You should do something else other than worrying about these rich af arabs. Maybe find a job at McDonald's?
Wach Tom scott's vidéo about some river flood prévention system in London, they apply the same technique to prevent corrosion, and it's a more vital infrastructure than a skyscraper that must never fail.
Wow it's really, awesome engineering , Thank you lesics!
Amazing that they designed this skyscraper almost 20 years ago!
Okay but why isn't the Burj Khalifa connected to the sewer system?🤔
To save costs initially during the 2008 recession era. Besides, dubai is building 6 billion usd swerage system to be ready by 2025 under its sustainable city plans.
It is
It is... Via truck :)
It makes you question priorities, doesn't it?
because, overall, that country is still in the middle ages
Dubai already has a sewer system, that's old news u are telling
It would have made more sense to use stainless steel rebar
That is what I thought. More expensive but worth it. Why not?
With stainless steel rebar, the structure could last 500 years or more if the ground holds up well.
That would have been way too sensible for the dictator that was compensating for something with the height of the Burj.
@@Mixter81 A lot of bridges that failed due to rebar corrosion have been replaced with bridges using stainless steel rebar and should last at least twice as long.
Very strong video, thanks!
Awesome demonstration of science
All I learned is that it is a horrible idea to build a tall tower next to the beach.
No its not
@@eventusvantos1905 how many other towers are built by the beach?
no
Burj Khalifa is not close to the beach lol.
So you mean to tell me the world's tallest skyscraper is just nailed down to the earth
Haha, they all are technically 🤣
So are most oil rigs, My mate used to do that for a living.
Incredible thoughts.