How the world's longest underwater tunnel was built - Alex Gendler

[@sebastianelytron8450]

After spending a semester of my engineering degree studying the construction of the channel tunnel, I can reveal it was dug by a huge boring machine.

[@manghariz2211]

Well if its a joke this is a damn good one

[@Gabriel-l]

Nice

[@jaqyboris5593]

Nice

[@thorodinson7467]

@@manghariz2211 how?

[@DavidOfWhitehills]

I dig.

[@duchi882]

*"A type of concrete that could heal itself"* Flex Seal Family of Products: _This is an Avengers Level threat_

[@andresv.8880]

😂

[@queensaharaice7376]

🤣🤣

[@bruh6654]

I SAWED THIS TUNNEL IN HALF

[@ayosup5326]

I'll take your intire stock

[@TheZiiFamily]

Flex tape

[@dwnt]

me : about to go to sleep. TED-Ed : *How Do You Build A Tunnel Underwater?* me : ..... me : WELL THAT'S A GOOD QUESTION. I AM IN

[@halagavi]

Indonesian be lyke

[@willanthoniozeppeli7913]

You sleep early af

[@YeppyNope]

Asians am i right?

[@ChaosBakurai]

@@willanthoniozeppeli7913 *facepalm*

[@Jomster777]

*Mammoth Tom*

[@ewanturnbull645]

“The British anticipated dryer conditions” is literally the most hysterically ironic thing I have ever heard

[@LKLM138]

Brits anticipated dryer conditions UNDER A SEA nevertheless

[@siddharthagupta3754]

As they say frequently in cricket stopped due to rain, why don't we put a roof over all of england?

[@flowersArePretty1]

@@siddharthagupta3754😂😂

[@Maysra-tg6lx]

I don’t even like engineering all that much, but TedEd always tells the most interesting stories

[@sakeriyasaleh4820]

@SHOQSH S what he means is that engineers helped create the phone

[@MrAmgadHasan]

i dOn'T lIkE eNgInEeRiNg aLl tHaT mUcH

[@Maysra-tg6lx]

tommy aronson a phone, and yeah, I’m well aware that it didn’t just pop into existence, it was engineered. I’m just not very passionate about engineering

[@Maysra-tg6lx]

Amgad Hasan I appreciate engineering and all that engineers have achieved, I just don’t have any passion for it

[@amplifiedbible07]

@@Maysra-tg6lx what's your passion?

[@theadamfriedlandshow4668]

My dad worked on the English side of the tunnel as a civil engineer. He was tasked to deal with the leakage.

[@leaastylez7504]

how old is your dad ?

[@theadamfriedlandshow4668]

@@leaastylez7504 he is 58

[@VaanRavi]

He must be proud of his work

[@theadamfriedlandshow4668]

@@VaanRavi no just another job to him. I’m proud tho

[@herchannel1355]

Wow...amazing.

[@suvashyadav5562]

TED-Ed always answers questions i wondered about as a child

[@priyadixit]

kzbin.info/www/bejne/bX2zf6WXeraHq8k

[@kitchenfavour]

Hai😍😍😍

[@nono403]

❤️

[@satyampandey890]

Really! Then please mention your answered questions which u had in childhood

[@RandomGuy-fk2ym]

Does that confirm when we grow up we actually become like robots that just work eat and sleep without questioning anything ?and when people do for example about the government (covid) we call them conspirator…

[@OverrideTV]

I don't get GPS signal in a parking garage and these guys can get an accurate satellite position underground below the seabed?? 3:33

[@superslimanoniem4712]

and my gps doesn’t always work properly, with my “location” jumping around the whole street, when testing it in my HOME, next to a window. EDIT: I forgot to say that the meeting in 2 cm part is even harder...

[@fadisabahrafopola2244]

Do you really believe the general public has the tech? 😂

[@bagamax]

They didn’t. GPS signal won’t pass trough earth and water, but you can track it outside the tunnel and get a precise direction and distance from that point into tunnel with laser guide.

[@Bolehillbilly]

Using a gyrotheodolite?

[@AhmadRizkyAlfian]

That's why they got to build it. Not you

[@cristianv2850]

Engineers should build the next big thing: Sky tunnels.

[@akumaking1]

Wormholes!

[@siddharthjain7751]

if its sky how it is a tunnel

[@derpychicken2131]

dont forget to make airproof boring machines so they can bore through the sky safely!

[@flamecharge8019]

Using not a drill but using a plane

[@aminaalicealic9769]

You proposing Amazon Jeff B. starships? I don't think that will work...Elon m.gave his thoughts on and I agree... 🤔

[@funny-video-YouTube-channel]

Nice job. Projects like this one provide a lot of value for humanity !

[@priyadixit]

kzbin.info/www/bejne/bX2zf6WXeraHq8k

[@Mikasks]

Humanity? More like Britain and France.

[@koyation]

this will probably be in your youtube recommendations in a year or two

[@melonlord2851]

tru lmao😂

[@GeekPeek]

Ok boomer

[@TylerSolvestri]

@@GeekPeek Overused and really unfunny meme.

[@Iigua]

Not necessarily

[@azamkhan1526]

@@Abhishek_5harma this won't work here mate.... try ur luck somewhere else

[@jayjoshi3252]

Imagine the workers from both the sides met with one worker standing a foot above the other. That would've been such an awkward handshake

[@marinusbergsma4515]

Jay Joshi Haha i think they didn't give a fck mate

[@kellynolen498]

They would be so happy then notice and be like it was france not our fault! Then the french workers would pull out a stale baget and the british workers would pull out rolls of _aluminium_ foil they duel then after the battle would drink some tea and talk about there exploits the french would proceed to murder the first englishmen that made a "surrender" joke this is about what i think would happen probobky

[@priyadixit]

kzbin.info/www/bejne/bX2zf6WXeraHq8k

[@LocherYT]

Imagine if in the faraway future we'll have such a bigass project connecting the US with spain and this happens because one country was not using the metric system

[@hesterclapp9717]

For Anglo-French readers, that's about 30.48cm

[@sissyontheroad6349]

Why does this remind me of digging in the snow banks at school?

[@priyadixit]

kzbin.info/www/bejne/bX2zf6WXeraHq8k

[@Chrysaetos3]

Anglo-French engineering produces some incredible feats when the two sides work together. Such collaborations produced icons such as Concorde, the Channel Tunnel and the Millau Viaduct.

[@wanjingsim9685]

the construction workers who built this tunnel were very brave!! hope the ten who lost their lives rest in peace :(

[@bjornhebergman8785]

During construction of the Seikan Tunnel, under the Tsugaru Strait, 34 workers were killed.

[@chicagotypewriter2094]

@@bjornhebergman8785what does that have to do with the Chunnel? Quit your pity olympics

[@nerdlingeeksly5192]

I'm from America and had no idea this even existed, but I'm glad I found out about it; it's amazing!

[@Baby1234Blue]

Haha, of course you are ;)

[@dannyg1195]

The magnificence of this project doesn't lie in what was accomplished, but in the coming together of people from different lands to build something that benefits everyone. Together we have unlimited potential.

[@ShamolyKheraOfficial]

I love how such a challenging topic has been made interesting with fun graphics and animation. Perfect way to teach and engage at the same time !

[@funlearntv9644]

Yeah very commendable! I hope i could learn animation too in teaching factual stories .

[@carf1]

It would have been good to hear more about the navigation technology that allowed it to work through the rock and water above, rather than just "satellite navigation"

[@iuer4643]

just like egyptians using mirrors for illuminating inside, but these "mirrors" transmited the gps signal outside the tunnel, on both sides, the spot on satellite was on both exists, and the inside of both tunnels was calculated, just like @maxim s. bagaev said

[@4KWalkthrough]

Here is Parliament of India kzbin.info/www/bejne/lYu3moZ6f6xpetk

[@richardv4753]

I love getting informed on such random topics its kind of refreshing.

[@xinyuema6064]

How do you build a tunnel under water? - Do it in the rock beneath the water.

[@user-ky6vw5up9m]

xinyue ma some tunnels are in the sea-bed or river-bed

[@nusratbharoocha8704]

It took more than 100 Years for British and French to *Trust Each Other*.. Woaaahhhhh...

[@samrevlej9331]

I mean... have you seen British food? Worse, have you TASTED it? It takes a long time to get over that and trust people who can stomach such things. ... Oh yeah, and also a 116-year-long Hundred Years' War, a Nine Years' War, Wars of Spanish and Austrian Successions and a 9-year-long Seven Years' War, not mentioning the centennial Capétien-Plantagenêt dystany conflict (1159-1259), the race for expansion in Africa, the cultural differences stemming from our long shared and conflictual history, or even to this day differing geopolitical strategies and ambitions, but mainly the food thing. And tea. We will never understand their passion with tea.

[@OK-on1ze]

Samuel Revise I mean some British food is great. Who doesn’t love a good Shepard’s pie

[@albericdecarrere8436]

It's not like we've been enemies for most of our history after all

[@eltigueraso]

Albéric de Carrère but what I don’t get is, you guys were big allies in the world wars

[@laparisienne9520]

Don't your learn European History in US schools???

[@avinashparashar2794]

Engineering transforms lives. Respect.

[@timothynahurira5597]

I wish all my classes were like this. I'd look forward to every single one.

[@choviez]

For the first time Im actually pretty early for Ted-Ed like literally I've only seen videos like 5 years ago.

[@zizog3213]

M0rningSc4ree true

[@tylermitchell9131]

Who wants to bet that the person who said "Humanity is at its best when breaking down barriers" locks his doors at night.

[@paepsae4904]

ive crossed this tunnel in both directions multiple times in my life, and have now only just realised it isnt on the seabed but beneath it. well done me.

[@kalenzypie]

Astounding visuals! I really dig 2:06.. and the other worker animations

[@junonli3394]

The introduction to another related video at the end of this video is smooth and triggers our interest in simply knowing more.

[@ayoubgourram9011]

One of the biggest achievements in human history i guess! This is just something beyond fascinating... To challenge nature and tunnel through the sea... It shows that humans can do most of the things that seem impossible today in the next 100 years...

[@ga.y.meofthrone]

Every time the machines came close to one another, I held my breath. STOP TOYING WITH MY EMOTIONS, TEDED!!!

[@maha-ud2li]

It's so entertaining watching this as a student studying civil engineering

[@richard1113]

Pretty decent presentation of the story. One bit you left out is that toward the end of their journey the UK TBMs were driven down into the ground, clear of the tunnel and the French TBMs finished. So, the TBMs didn't meet in the middle like depicted here. Also, the political bit at the end was quite unnecessary.

[@S_P_A_C_E_DD]

Richard Forester The political bit at the end was completely out of place, this is a video about engineering, not globalism.

[@firstname405]

It was perfectly apt. What's your issue exactly?

[@seventhsheaven]

Agreed. This is about how the tunnel was built, not the creator of the video having a hard-on for so-called refugees. They’re not trying to cross the channel to get to safety - they’re in France, they’re already safe - but because they want the easy benefits and free healthcare of the UK. It’s greed not fear that drives them.

[@wertyuiopasd6281]

@@firstname405 no it wasn't

[@firstname405]

@@wertyuiopasd6281 glad to hear you didn't have any issues with it :)

[@ChanwooPark-me1wc]

이렇게 오래 전에 벌써 해저 터널이 건설되었다니 참 놀랍습니다. 영국과 프랑스를 기차로 이동할 수 있다는 사실은 한 번도 들어본 적이 없는데, 참 신기하네요. 유익한 영상 감사합니다!

[@user-vn7ce5ig1z]

2:42 - Nope, I see no problem here, this looks fine to me… 3:58 - That's an unfortunate name, even in England where it means something else. :-|

[@deletoblue1109]

Bruh

[@OK-on1ze]

Yep my guys about to get drilled into shreds

[@TravelingisFREEDOM]

This seems to be a very impressive place, I hope I can visit sometime in the future when all this is over. Seeing and sharing places like this is why I love traveling and make videos so much! And please keep up the great job!

[@Storifiedyt]

I did'nt even knew that such a tunnel was possible and that it actually exists. Thank You Ted Ed.

[@leonpaelinck]

luckily it wasn't built by Elon Musk's Boring company

[@friend6281]

We are living in tough times. However, now is the time, more than ever, to believe in yourself, to learn and grow and hopefully become a little wiser. I don’t know who you are, fellow internet user, but don’t say no one cares about you or believes in you. *Because **_I_** believe in you.*

[@crayoladcrayons3657]

That profile picture says otherwise lol.

[@tiffyw92]

Friend, whether or not you made this account specifically for this post, you're very nice. I appreciate it.

[@chigozie_chukwuma]

That end quote got to me. "Humanity is at their best when we break down barriers." 🙌🥰

[@intervein1]

I would like to appreciate the fact that Ted-Ed took the time to read and like a bunch of comments.

[@kikkasluca]

"humany is at theyre best when breaking borders" UK : BREXIT LOOL

[@Yusso]

UK going backwards

[@interrobangings]

@@Yusso seethe more

[@hankjones7054]

Ted-Ed seems to be endorsing uncontrolled immigration across the uk border. Dont quite know what it has to do with America but yes let's all get along nicely. Nevermind that any genuine refugees have to pass through all of Europe, and countless safe havens, before they reach England. The people trying to cross are not refugees they are economic migrants. And those borders that apparently need to be broken are the only thing stopping an extremely generous and abusable uk benefits and support system from being completely decimated. Wonder what Americans would think if the British started telling them to erase the Mexican border because 'we're all in it together' and 'yay humanity!'

[@BeaverChainsaw]

@@hankjones7054 we do need to enforce borders but honestly the refugee/illegal migrant detainment centers are awful. They literally separate children from their families.there's a better way to detain. news.un.org/en/story/2019/07/1041991 www.google.com/amp/s/www.vox.com/platform/amp/first-person/2019/6/20/18693058/aoc-alexandria-ocasio-cortez-concentration-camps-immigration-border

[@ernestovalverde2394]

@@BeaverChainsaw I don't understand why you don't just send them back to their countries. Take in thousands of unsurveyed people from developing nations and crime rate, unemployment, and general social unrest will rise. The developing nations lose as well as they're losing workers, it's a lose lose.

[@artlife1625]

I love to watch videos of TED-Ed ,especially when the narrator sounds calm and a voice you'd listen too

[@blueberrychocolate4238]

This video was really interesting! Thanks for making it Ted-ed.

[@YokoshimaSTAR]

Can't agree more about the intro quote. We always come up with intellegent ideas (especially with technology) crazier than what we happen to predict for future.

[@shudheshvelusamy7644]

France: Hey Britain, lets build a tunnel below the English Channel to connect our countries! We'll be so much closer to each other! Britain: *PTSD flashbacks of a thousand years of continuous warfare*

[@wertyuiopasd6281]

being an isle now doesn't matter. If they fight the French, they're finished.

[@vegantirex]

i'm in love with the colour palettes of this video

[@hndrwn]

TED Ed: Humanity is at their best when breaking down barrier Vikings: Sweet!!

[@juliustorre3746]

Those 10 workers died are heros that gave us opportunity to have better Transportation... Salute!

[@user-uf9ot1ty4t]

when i was little me and my family went to europe. they said we would go into an underwater tunnel. now i thought we would be in the water and i was so excited! then i realized it was UNDER the water, not under water. i was so disappointed.

[@irrelevance3859]

I used to think that too lol. I thought it was a literal tunnel through the sea channel. I was shocked when I was kid and found out it was under the sea and not through

[@johnblaze8774]

Simply astonishing

[@joelnoronhaxyz]

Humanity is at its best by breaking down barriers. but those refugees should learn to respect the laws of the land, which they don't.

[@raphael5165]

These guys Ted and Ed make very good videos

[@nikitakumari5773]

I don't understand English 😞😞😞 but pictures of this video helped me a lot , thanks Ted

[@mellow-yellow918]

I am a student and thanks to Ted ed that I can still learn so much sitting at home!

[@nelsonnoname001]

"Humanity is at their best when breaking down barriers" Hernán Cortés, Vladimir Lenin, Augustus Caesar - Stand and applaud*

[@johnkneeboi369]

This sounded sorta globalist when I heard it. Now i know it is Communist!

[@hermannbarbato]

@@johnkneeboi369 What? Globalism or Cosmopolitism doesn't necessarily mean Communism. Or are you saying Augustus and Cortés were communist too?

[@zejdland]

@@hermannbarbato globalism is bad... and communism has to be global to work ...

[@hermannbarbato]

@@zejdlandYou're confusing Globalization with Globalism and Globalism with Communism, these are three very different concepts, although one might include some of the others.

[@ntrakstudio]

Absolutely incredible. I don’t care what you say, humanity is beautiful

[@cosmiclyrics2307]

TBM sure is a piece of art. A single piece of equipment capable of digging, transporting, and lining the tunnel. I'd love to be able to see this in person one day.

[@ig_itsaugi4138]

This channels animation and visuals are too good make anything too cool and easy and interesting

[@raphides3928]

3:57 The moment they broke through the wall was absolutely beautiful! Here’s a video of the actual contact: kzbin.info/www/bejne/h2a5XnuhqJWieq8

[@priyadixit]

kzbin.info/www/bejne/bX2zf6WXeraHq8k

[@ninareeves9651]

The animation suggests they shook LEFT hands but the reality shows the usual right handed handshake….not scouts then!

[@theobserver3753]

Every country has the right to choose whether to let people in or out. If they want in then they should be willing to accept that country's values and be a citizen.

[@victoriaheed2943]

My dad worked away for weeks and weeks painting the tunnel in the 80s, I was born 83 and I remember he was away quite a long time painting. He told me it was an underwater tunnel and to my 6/7 yrs old brain I asked him how he breathes painting underwater and he told me he had an oxygen tank like a scuba diver! 😂 It made sense to me, he's a cheeky git! He's 66 now.

[@Solarindustria]

I LOVE YOUR VIDEOS FROM THE PAST!!!

[@darla8896]

Hey TED-Ed! Can you please make “Why you should read The Picture of Dorian Gray”. It’s one of my favorite books. Really love your videos.

[@thesquiddude1]

Skylar Sorrows well until they do. Why don't you tell me. :)

[@FootLettuce]

The boring machine is actually one of the most interesting machines ever.

[@rachanara5157]

sometimes you're so early that you don't know what to say

[@jarman9031]

Yep

[@zlyntudteam2394]

True

[@jarman9031]

@Zlyntud Team Yep

[@priyadixit]

kzbin.info/www/bejne/bX2zf6WXeraHq8k

[@basicdose.9872]

Even today this is a marvel of technology !!!

[@salt_factory7566]

IK I will sound like a stickler wehraboo, but the advent of aerial warfare does not suddenly render the English channel a useless means of defense. Ask the Germans how well their aerial assault on the UK went.

[@reg1mbald294]

France and England have such a frenemies relationship🇬🇧🇨🇵

[@WhatAreFingers]

Don't agree with the refugee part but nice video

[@carlosdyer3726]

that was just the beginning of a great innovated idea

[@areamusicale]

4:37 yes, the journey is rather short but the waiting time to enter the tunnel usually is about 2-3 hours, so ... yeah! Security.

[@nativenewlondoner]

No, not even close.

[@kenjikakashi]

So Many Extraordinary Machines that weren't thought to us. Thank you Ted-Ed

[@paxfrancais4350]

5:00 to 5:07 People are responsible for their own actions. But neither the French nor the British owe anything to random uninvited people.

[@monitcahall4560]

Great Video I will show this to my class. Thank you for making the time putting this together.

[@muhammaduzair9741]

Finally I'll be able to show off my knowledge to look cool at parties

[@quintiax]

You already look cool for me.

[@VarongTangkitphithakphon]

It's fascinating how they told the story and end with this ending. Clever!

[@AsifAAli]

"Humanity is at its best when breaking down barriers"

[@bearovanilla]

Graham Flagg. What a name!

[@waltersobchak5481]

They are not refugees, they are economic migrants. Nearly all of them are males aged 18 - 30. Lots of which have left fled their homelands even though there was no war happening. They've passed through numerous "safe" countries trying to get to the UK for better benefits.

[@HiAdrian]

As evidenced by the fact that they're waiting in _France_ to cross to Britain.

[@JaynnC]

This is just the video I needed to keep me awake at 2am. 👏🏽 Job well done Ted-Ed 👏🏽 Job well done 👏🏽

[@user-wr2mp9ps4w]

Amazing video and great engineering, additionally there are two undersea tunnels in Istanbul called Eurasia tunel (for cars) and Marmarail (a rail rod) that connets Asia to Europe.

[@hayderisded6644]

Oceans 13 taught me everything I need to know about the channel

[@fortis17]

I was hoping to find this comment 😊

[@annarose932]

Could you do a video on Why Yoh Should Read The House of Bernarda Alba by Federico García Lorca. Would love for you to look at the historic inspirations, the fact that this was Federico's last play before he was killed before this was performed, and how it looks at toxic femininity and aggression within a family relationship.

[@shahusardar2762]

Thank you for the tuturial

[@vijayathaker552]

Legends watching during online classes.

[@alaskawashington]

i had literally no idea this tunnel existed until I saw this video. cool stuff lol.

[@chanuthgunawardene7579]

This is quite true and amazingly fascinating combining, maths, engineering and even physics all together to create a tunnel for the greater good of humanity. Hopefully, we can reflect on this moment and make more things like this such as an elevator to the moon. Thanks, Chanuth.G

[@cannottrust3710]

I have never heard of this Tunnel and its as old as i am

[@maxxis4035]

3:57, did they just shake hands with their left hands?

[@vector4725]

In Germany, the BER project started in 2006 and was officially completed in 2020 (it is not). Meanwhile, it took Brits and French engineers 8 years to fully complete the Channel Tunnel, which is far more complex than building an airport.

[@gymboostindia]

Before this date, I didn't even know there was an underground tunnel.

[@aleksitjvladica.]

Same.

[@reanozeon9459]

3:59 most interesting part !

[@thegoodlydragon7452]

Wow, that obnoxious anti-white angle at the end was so unwarranted. Imagine being so stuck in an eco-chamber that you think "unfortunately borders exist" would go down as a neutral statement.

[@dontspikemydrink9382]

it isn't neutral, it is pro humanity

[@mamasho-otocheki1797]

I love how Ted ed hearts their fans comments.

[@priyadixit]

kzbin.info/www/bejne/bX2zf6WXeraHq8k

[@ffarkasm]

I admire the French's and the British's patience for being able to work so long with such boring machines.

[@sreachgeo5359]

3:37 Can you explain to me a little more, which exact GNSS system they used, and how it was possible, because even today GNSS methods (e.g. PPK, or RTK) are not very reliable.

[@PfEMP]

"The British anticipated drier conditions" - Whaaat? 😆

[@evank3718]

I didn’t even know this existed but its really cool

[@dontspikemydrink9382]

Hiw can you not

[@aedenthegreatyt]

“We build too many walls and not enough bridges” -Issac Newton

[@priyadixit]

kzbin.info/www/bejne/bX2zf6WXeraHq8k

[@xaviermantha63]

Thanks for the video.