Epic Bridges Absolute Genius: Monster Builds


Epic Bridges

Dick and Dom look at the world of monster bridges, from ancient Roman arches to a future where we may see bridges 3D-printed by robots.


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Transcript


LineFromTo

-Welcome to the genius world of...

-BOTH:

-Monster Engineering.

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THEY SCREAM

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Each show, we're going to introduce you to three geniuses...

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-Yeah, wow!

-Oooh!

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..whose ideas have quite literally built the world.

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We put all their epic brilliance to the test...

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Hit it, hit it!

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..when we tackle our own genius Monster Build.

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Don't you dare demolish this!

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Going higher...

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Why is it swinging?

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..faster...

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..and scarier...

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Oh, no!

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..all in the name of science.

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That is a massive piece of construction.

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What could possibly go wrong?

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On today's show, we're going up...

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..down...

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It's unbelievably fast!

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..and across.

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-Go.

-Come on! Run!

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..as we uncover the secrets of epic bridges.

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-Wow!

-Look at that. It really is a Monster Build, that, isn't it, eh?

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-This is...

-Absolute Genius!

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Here's a question for you. How do you get millions of people

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from the city over there to the other side of the bay?

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-Swim it.

-What? No, there's sharks!

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-Tunnel it.

-Don't be ridiculous!

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-Bridge it.

-Who is she?

-No, BRIDGE it!

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Oh, bridge it. Yes, I see.

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This is the Golden Gate Bridge in San Francisco.

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And today's show is all about, you guessed it...

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-BOTH:

-Bridges!

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People have always needed to get from A to B,

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but sometimes, there's a big problem...

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This is a big problem.

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..which forces engineers to get thinking.

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-And the simplest solution, build a bridge.

-Bravo!

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They are a brilliant fix whenever nature gets in our way.

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-Ooh, that's got it.

-As we've become smarter, bridges have become longer,

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taller and stronger.

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Today, there is almost no gap too big to span.

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But let's rewind the clock.

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When it came to genius feats of engineering,

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the Ancient Romans were hard to beat.

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From amphitheatres to aqueducts,

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they knew a thing or two about building stuff that lasts.

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We've come to the south of France to see one of the biggest

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and most impressive examples of Roman engineering in the world.

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Yeah, it's such a popular tourist attraction,

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that it's even found its way onto the back of a five euro note.

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Pretty good, eh? Have a look. It's amazing.

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-This is the Pont du Gard.

-The bridge over the River Gard.

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The Pont du Gard has stood in this valley

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since the first century AD.

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It survived everything, from floods to gale-force winds,

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and today, it's one of France's most famous landmarks.

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And there's only one way to visit

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this "magnifique" bit of construction.

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-See you later.

-It's not a gondola.

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# Just one Cornetto... #

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It's not a gondola.

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Dom, just sit down.

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It's even more impressive from this angle.

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And if it wasn't for our first genius's massive brain,

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the secrets to the strength of the Pont du Gard would have been lost.

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Introducing author, architect, engineer

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and all-round Roman boffin,

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-it's...

-BOTH:

-Vitruvius!

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You've got my beard all wet.

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Yeah, but you've got a dry moustache.

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Genius helper Alejandro Mendez Graf

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has arranged access-all-areas to this Roman marvel.

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-Hi, Alejandro. How you doing?

-Nice to see you.

-Welcome.

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It'd be great to have a look around the bridge.

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And we're starting, where else, but right at the very top.

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Almost 50 metres above the valley floor.

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Alejandro, it's in really good nick, this place,

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but how many years old is it?

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-It's 2,000 years old.

-2,000?!

-What was it built for, though?

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This aqueduct was built to have running water in the city of Nimes.

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So this whole construction was made

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to get water from that side of the river

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all the way through this... I suppose you'd call it a tunnel,

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over to the other side, so people there could get fresh water?

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-That's right.

-Wow!

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The Pont du Gard's three layers of arches aren't just for show.

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This was the only way that the Romans

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could build high enough to keep the pipe carrying their fresh water

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level with the surrounding hills.

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We are inside the pipe.

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You have to imagine this place with water coming almost up to the roof.

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Is this tunnel all watertight?

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This tunnel is watertight, thanks to the mortar

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which was on the walls here.

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The Romans invented a super-strong mortar,

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made from crushed volcanic rock.

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When added to the walls of the pipe we've just seen,

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it stuck the stones together and stopped the water leaking out.

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Clever, but they didn't use it all over the bridge,

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as we are about to discover.

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So, obviously, it's been well put-together.

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How is it actually constructed?

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The stones which are the building,

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our stones are coming from a quarry at about 600 metres just downriver.

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They were transported up to here.

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All the big stones are held together without mortar.

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So there's no sand and cement, no bonding at all.

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Not at all, and mainly,

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that concerns the first and second level.

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Amazing! But also very strange.

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After all, this massive stone bridge weighs over 50,000 tonnes!

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So we understand that the top of the bridge, the aqueduct,

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is held together with mortar,

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but what about the rest of the bridge?

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How does it stay up? What's sticking the bricks together?

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There's only one way to find out.

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Le Fran!

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Meet Fran!

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-Our scientist friend...

-Go!

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..who can explain things in a way that even we can understand.

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It worked!

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She loves a good experiment.

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-And best of all, she pops up...

-Hello!

-..whenever we need her.

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Franny, everybody! Eh?

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Franny, we need your help!

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The Pont du Gard was beautiful.

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But the bottom part of it was stuck together with nothing,

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-not a saucisson!

-Rien!

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You think it was stuck together with nothing?

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Well, in fact, it's stuck together with friction.

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-Friction.

-Yeah, but friction slows moving objects down.

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It does, but friction can also stick objects together

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and stop them from moving completely.

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I want to show you with this stuff.

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Right, so what are you going to do, cook us a curry?

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-I've got a little bit of a challenge for you.

-Yes.

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I want to see how much of this rice you can pick up

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-just using this stick.

-What?!

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-Give it a try.

-You go.

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-Go on. Challenge.

-Just in different ways...

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-See how much rice you can pick up.

-How much rice have you got?

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-Oh! Oh!

-Ah-ah-ah-ah-ah!

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No, no, no!

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-Oh!

-Aw!

-Give up. Silly experiment!

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Fran, why you not use pasta?

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What if I told you that using friction,

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we could pick up the whole of this jar of rice.

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Not possible - you can't use that stick to pick up all that rice.

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-Well, we'll see.

-No.

-So, Dick, take this.

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Just jab the stick in a few times. Just try it.

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-Jab it?

-Just jab it in.

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And lift it out and then put it in.

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And each time you are doing that,

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it's jiggling the rice about in such a way

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that more and more rice is touching the stick,

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and, eventually, there'll be enough rice touching the stick

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for the friction between them to be enough

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to lift up the whole of the jar.

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-I say no.

-Let's see.

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Lift it. Lift it right out.

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So you've got to lift it right out

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and then put it right in

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and then lift it out

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and then put it in.

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Oh, oh, go on! Go on!

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Go on!

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THEY CHEER AND LAUGH

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Oh, look at that! Friction!

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FRAN SCREAMS, DICK GROANS

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Mamma mia, you make a big mess!

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But how does that relate to stones holding together a bridge?

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What the Roman engineers did,

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they cut the stones really precisely so they fitted perfectly together

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and that meant there was a lot of them touching each other

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and touching means more friction, which means the friction was enough

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to hold the bridge up without mortar.

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And the technique is called opus quadratum.

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-BOTH: Told you!

-And the reason we know about it

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is because of the writings of Vitruvius.

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VITRUVIUS CHUCKLES

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Now we understand how it was made,

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the Pont du Gard is even more spectacular.

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It's amazing to think that, 2,000 years later,

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that bridge is still standing,

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thanks to the genius way it was built.

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And if it wasn't for this man,

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we wouldn't know how the Romans built it.

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Vitruvius, you are a rock-solid genius.

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Oh, yeah, boys! You can't knock me down!

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Ohh... Argh!

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Next!

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After the Romans,

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things went a bit quiet in the world of bridge building.

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In fact, they went A LOT quiet for nearly 2,000 years!

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But from the late 1700s,

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engineers had cast iron and then steel at their disposal.

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These new materials set off a golden age of bridge building.

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And nowhere went bigger on bridges than New York.

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That's the Brooklyn Bridge, crossing the East river,

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linking Manhattan to Brooklyn.

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Yeah, it's a suspension bridge

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and when it was first built in the late 1800s,

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it was the longest of its type in the world.

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But without our next genius,

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that incredible structure would never have been built.

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Well, who is it? Don't leave me hanging!

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That's exactly what we're doing.

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Introducing to you, the man who created twisted steel cable...

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-Twisted steel cable?

-Yes,

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-it's the thing we're going to fly down in a minute at 100mph.

-Great(!)

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..Wilhelm Albert!

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Happy flightings, Dick und Dom!

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-Oh, no!

-Whoa!

-Nooooo!

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HE SCREAMS

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Stop that. That's silly.

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We'll come back to that terrifying moment later.

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Wilhelm Albert was in charge of a German mine.

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He was fed up by the number of accidents caused

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when the iron link chains, used to haul heavy loads, snapped.

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His genius idea -

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a much stronger twisted steel cable, originally known as Albert Rope.

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Today, Albert's invention can be found

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on many of the world's most famous bridges,

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even ones that are still being constructed.

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-Wow!

-Look at that. It really is a Monster Build, that, isn't it?

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This is the Queensferry Crossing,

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a new road bridge currently being built

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over the Firth of Forth near Edinburgh.

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When it opens, this 2.7km span

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will be the longest three-towered cable-stayed bridge

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in the entire world.

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That is a MASSIVE piece of construction.

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We've been given special permission to visit the deck

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where the road will be built once the bridge is finished.

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Wouldn't want his job! Look at him.

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Look at him up there, look at his job.

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He's just dangling!

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Right. Goodbye, everyone.

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The deck is suspended 55 metres above the water.

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That's about the height of 11 double-decker buses.

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-Whoa!

-Whoa! Hey!

-High!

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This is the THIRD bridge to cross the FORTH Estuary...

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Get it? ..joining the incredible 19th-century rail bridge

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and the 1960s road bridge.

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This project is too mammoth for just one genius helper, so we've got two.

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Gerard Kiely and Ralph Hildebrand!

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So, the cables on this bridge, what are they used for?

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So, what we're standing on right now is the road deck of the bridge

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and the cars will be driving across here in a couple of months' time.

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-Yeah.

-So, to stop the cars falling into the river,

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these cables stop the deck and they keep it floating in the air.

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How much weight will these cables be taking?

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In total, all of the bridge deck is going to be close to 100,000 tonnes.

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-Unimaginable.

-That's like 50,000 two-tonne cars.

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-What?

-A lot.

-And it's all thanks to the genius way

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that these cables are constructed, right?

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Correct. On each strand, what we have here,

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we have seven wires.

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We have one wire in the middle and you have six wires bent around

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and they are holding a lot of force together. Yeah?

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So in each one of the stay cables, we have between 55 and 109 pieces.

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35,000 miles of strength inside, so they can take a lot of load.

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But if that was just one central wire,

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and all the other wires around it were just running straight along,

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it wouldn't be able to carry as much weight, right?

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It's the fact that they are twisted,

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that enables to take the massive amount of weight.

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-Correct.

-And this is all down to Wilhelm Albert's genius?

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Without him, there wouldn't be a bridge like this?

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Exactly. Without him, it would not exist.

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Suspension and cable-stayed bridges, like the one we've just seen,

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can safely carry massive loads over big gaps.

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Whilst vertical forces run up and down the towers,

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Wilhelm Albert's twisted steel cables are being stretched

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between the deck and tower, creating a rigid structure.

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That means the roadway which carries vehicles

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is locked securely in place.

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-There's no denying Albert's genius, but what better...

-Or scarier!

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..way to put his invention to the test than this -

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a mile-long zip wire, suspended more than 150 metres above a quarry?!

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-No!

-Whoa!

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So fast!

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It's unbelievably fast!

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Aaargh!

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Oh, isn't he brave?! I'm fine, though,

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because this stuff is strong enough

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to hold up to 100,000 tonnes of bridge, remember!

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Wey-hey!

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Oh, wow, ow!

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Urgh...

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What?! DOM LAUGHS

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-That was amazing!

-Not doing it again.

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-It was brilliant!

-It was fast.

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-It's like you're flying.

-Just fast. I just remember it being fast.

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Just to think that twisted steel cable was the one thing

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that was responsible for you not dropping.

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All day my lovely cable will keep you in the air!

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Up to the top again. Come on!

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-Coming up...

-Go!

-We are put through our paces...

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Oh, it's hard work, this.

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..in a military Monster Build.

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PEOPLE SHOUT

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Push it, push it.

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But now it's time for some...

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This London Bridge isn't falling down.

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In fact, it's gently unrolling.

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Thanks to nifty hydraulics,

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this link across the Grand Union Canal

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can be rolled and unrolled to allow boats to pass.

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This suspension bridge in China

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is paved with 99 panes of extra-thick glass.

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It's 300 metres above the ground, so, in case of emergency...

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..definitely don't break here!

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It looks like something you'd see at a funfair,

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but this is the Tees Transporter Bridge in Middlesbrough.

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This moving gondola can carry up to 200 people, or 9 cars.

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Scream if you want to go faster!

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SCREAMING

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We've seen how genius ideas from the past

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have helped create some truly breathtaking bridges.

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That's the past, but what about the future?

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Well, let's meet our next genius.

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Mr Chuck Hull.

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Hey, how you doing, boys?

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-Yes, very well, thank you.

-Yes, thank you very much, very nice.

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Back in the 1980s, Charles "Chuck" Hull

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was working for a company that put thin plastic coverings on furniture.

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In a spark of genius,

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Chuck tried putting thousands of thin layers of plastic

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on top of each other, before using light to etch the blocks

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into simple three-dimensional shapes.

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Mmm! Smells ready!

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3-D printing was born and now, over 30 years later,

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it's beginning to revolutionise the way we build.

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Whee! Gnarly!

0:16:400:16:42

The Dutch city of Amsterdam is famous for its canals

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and is already home to over 1,000 bridges.

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Look, there's one. See, told you!

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Beginning to take shape in this warehouse behind us

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is one of the newest and strangest of the lot.

0:16:590:17:01

Welcome to the home of the world's first-ever 3-D printed bridge.

0:17:010:17:07

-What?

-What? 3-D printed bridge?

-Is it?

-Go figure.

0:17:070:17:10

-What is it?

-Bridges.

-Bridges.

0:17:130:17:15

To find out more, we're meeting Tim Geurtjens.

0:17:210:17:25

He works for the company who are making the bridge.

0:17:250:17:27

-Tim, hi. Lovely to meet you.

-Hi, Tim.

-Hi, welcome.

0:17:290:17:32

Could you tell us what 3D printing is?

0:17:320:17:34

How is this machine working behind us?

0:17:340:17:36

We have a robotic arm which can move freely in the air

0:17:360:17:39

and it squeezes out a little bit of molten metal at the same time.

0:17:390:17:42

It's almost like drawing in midair. You can just draw lines in the air.

0:17:420:17:45

It can move any direction - left, right, up, down?

0:17:450:17:47

Anywhere. Yeah.

0:17:470:17:48

And so it ejects layers and layers and layers of liquid metal

0:17:480:17:52

into any shape that you programme on a computer?

0:17:520:17:55

Yeah, exactly.

0:17:550:17:56

Mind-blowing!

0:17:590:18:01

Tim and his robots have even managed to 3D print a bike frame.

0:18:010:18:06

So that whole frame is 3D printed?

0:18:060:18:09

-It is completely 3-D printed, out of stainless steel.

-What?!

0:18:090:18:11

-Right, can I have a ride?

-Sure. Give it a go.

-OK.

0:18:110:18:14

-Oh, it's pretty heavy!

-Is it heavy?

-Yeah.

0:18:140:18:17

-No brakes.

-No, no brakes. No, we couldn't print those.

0:18:170:18:21

-Let's see what happens.

-So, what are you going to do?

-Cycle it!

0:18:210:18:24

-You've never ridden it before!

-My legs are too short!

0:18:240:18:26

-Look at that.

-It's going very well.

-Absolutely.

0:18:260:18:29

-Solid as a rock.

-Yeah.

0:18:290:18:31

# I like to ride my bicycle! #

0:18:310:18:34

-BIKE BELL RINGS

-Very sturdy.

0:18:340:18:36

I mean, it's like any other bike.

0:18:360:18:38

Is it? Works a treat!

0:18:380:18:41

-There's no brakes!

-Stop!

0:18:410:18:43

Aaargh!

0:18:430:18:45

But it's bridges we are interested in, not bikes.

0:18:450:18:48

Of course, your big project is building a bridge.

0:18:480:18:51

-How do you go about that?

-Well, I mean, obviously,

0:18:510:18:54

the robot is not big enough to build a full bridge.

0:18:540:18:56

So when the robot goes out of reach,

0:18:560:18:57

we just move the robot a little bit further,

0:18:570:18:59

and then we continue printing.

0:18:590:19:01

So by doing that, we can print... unlimited in size, almost.

0:19:010:19:04

So, this is a bridge that we printed before.

0:19:060:19:08

It's a miniature version of the bridge we're going to print.

0:19:080:19:10

It doesn't look strong enough to be able to take the weight of a person.

0:19:100:19:13

-May we?

-Yeah, sure, sure, sure. Be my guest.

0:19:130:19:16

-It's really sturdy!

-Is it not bending under your feet?

0:19:180:19:21

-No, it's perfect.

-Can two of us go on it?

0:19:210:19:23

-Sure. Yeah, you can...

-Oh, it's fine. It's really bizarre.

0:19:230:19:25

It looks really thin and flimsy, but it's actually as strong as anything.

0:19:250:19:29

-You can even jump up and down on it.

-Don't do that!

-All right.

0:19:290:19:31

So, what are the ambitions for this?

0:19:310:19:33

This is a small bridge. What about the big one?

0:19:330:19:36

Well, the big one is going to be, obviously, a lot bigger,

0:19:360:19:38

it will be about eight metres.

0:19:380:19:39

It's going to be able to support bicycles, pedestrians.

0:19:390:19:43

In the future, do you think we'd see 3-D printed bridges

0:19:430:19:46

spanning big rivers? You can put lorries on there and cars?

0:19:460:19:49

Yeah, I mean, yeah, as I said,

0:19:490:19:50

it's just as strong as any other stainless steel,

0:19:500:19:53

so you could print it, theoretically, as big as you want.

0:19:530:19:56

We think your imagination should be your only limitation,

0:19:560:19:59

so, with 3-D printing, you can print anything.

0:19:590:20:01

The full-size bridge is still a work in progress,

0:20:010:20:04

but when it's finished,

0:20:040:20:05

it will span a canal in central Amsterdam.

0:20:050:20:08

It's been a real eye-opener, looking at the future of bridge building.

0:20:080:20:12

And none of this would have been possible

0:20:120:20:14

without the 3D mind of Chuck Hull.

0:20:140:20:16

Shucks, you're making me blush!

0:20:160:20:19

-A 3-D printed...

-BOTH:

-Absolute Genius!

0:20:190:20:22

Thanks to the three geniuses we've met in this show...

0:20:270:20:30

That is a MASSIVE piece of construction.

0:20:300:20:33

..bridging gaps that WERE impossible...

0:20:330:20:36

Look at it! Wow!

0:20:360:20:38

..now feel like a hop and a step.

0:20:380:20:40

It's time for our Genius Monster Build Challenge.

0:20:430:20:45

And we're joining forces with the real deal.

0:20:450:20:48

The British Army's Royal Engineers.

0:20:480:20:50

Engineers have played an important role in armies

0:20:560:20:59

ever since Roman times, and the Royal Engineers

0:20:590:21:02

have been a key part of the British Army for 300 years.

0:21:020:21:06

We've come to the home of

0:21:060:21:07

3 Royal School of Military Engineering in Surrey.

0:21:070:21:10

2,000 soldiers are trained here every year

0:21:100:21:13

and they use their skills all over the world. We'd better behave,

0:21:130:21:17

because we're under the command of Captain Luke Parker.

0:21:170:21:20

-Captain Parker!

-Captain Parker, sir!

0:21:230:21:25

What exactly do engineers do in the Army?

0:21:250:21:27

The engineers allow the Army to live, to move and to fight.

0:21:270:21:31

They learn how to build bridges, create obstacles, breach minefields.

0:21:310:21:34

You mentioned bridges.

0:21:340:21:35

What kind of conditions would they have to build a bridge under?

0:21:350:21:38

In almost any conceivable conditions.

0:21:380:21:40

What? I take it they're not exactly light, these bridges, as well?

0:21:400:21:43

No, the bridges are extremely heavy and it takes a soldier

0:21:430:21:46

ten weeks to learn how to build all these bridges.

0:21:460:21:48

-We haven't got that long.

-You've not got that long.

0:21:480:21:50

However, what we do have is a lake that needs crossing.

0:21:500:21:53

We've got a bridge that needs building and not much time to do it.

0:21:530:21:56

-To the bridge!

-To this bridge build.

-All right.

0:21:560:21:59

Get ready for Team Dick versus Team Dom

0:22:000:22:03

in a frantic race to cross a lake.

0:22:030:22:06

Working alongside a highly trained team of Royal Engineers,

0:22:060:22:09

we must each build a 22 metre-long footbridge.

0:22:090:22:12

The first team to finish their bridge and use it

0:22:120:22:14

to move a casualty on a stretcher

0:22:140:22:16

from one bank of the lake to the other

0:22:160:22:18

will be crowned the winners.

0:22:180:22:20

Hooray, I've won!

0:22:200:22:22

There's just time for a few last-minute preparations.

0:22:230:22:27

Perfect.

0:22:310:22:32

We certainly look the part...

0:22:350:22:37

..but will we be able to act it?

0:22:400:22:43

A friendly callsign has been in contact with the enemy

0:22:430:22:45

across the other side of the river.

0:22:450:22:47

We have been tasked to retrieve the casualties across the river

0:22:470:22:50

using the infantry assault bridge

0:22:500:22:52

and extract them to the casualty post.

0:22:520:22:54

The team that gets their casualty to the Land Rover first wins!

0:22:540:22:58

Go!

0:22:580:23:00

'And we're off!'

0:23:000:23:01

Right, here we go! Faster!

0:23:010:23:03

This infantry assault bridge is a favourite of the British Army.

0:23:050:23:09

Its brilliantly simple design

0:23:090:23:10

means it can be built and dismantled quickly in virtually any conditions.

0:23:100:23:15

Go, go, go, go, go!

0:23:150:23:17

Cor, it's heavy!

0:23:170:23:18

Come on, sweaty, put your back into it!

0:23:180:23:21

SOLDIERS SHOUT My legs!

0:23:210:23:24

Get the next piece! Dick! Next piece!

0:23:240:23:26

All right! It's hard work, this.

0:23:260:23:28

Each of these aluminium bridge sections

0:23:310:23:33

is around four and a half metres long and weighs 55kg.

0:23:330:23:37

I don't know if this can last, though.

0:23:370:23:39

My legs are starting to give way.

0:23:390:23:41

-It's neck and neck.

-Come on, Dom!

0:23:410:23:42

No slacking, Dominici, keep going.

0:23:420:23:44

Urgh!

0:23:440:23:46

I could never be in the Army.

0:23:460:23:48

It's not for me. I'll stick with TV!

0:23:480:23:50

The joined-up sections are pushed out across the water

0:23:520:23:55

and rested on floats.

0:23:550:23:57

We're halfway across and Team Dom have opened up a small lead!

0:24:020:24:05

BREATHLESSLY: We've got one more piece there.

0:24:050:24:08

Nice work, team.

0:24:080:24:10

Final piece, final piece.

0:24:100:24:12

Dom is still in front, but McCourt's no quitter!

0:24:130:24:16

Good! Next piece, next piece!

0:24:190:24:21

Come on, they're catching up. Come on!

0:24:220:24:26

This is where we test out how strong the bridge actually is.

0:24:260:24:29

The completed bridge weighs a hefty 278kg,

0:24:290:24:33

which is nearly 2,000 ham sandwiches with the crusts on.

0:24:330:24:38

-Shattered.

-A stretcher can now be slotted on to the handrails

0:24:380:24:42

to allow our casualty to be moved safely across.

0:24:420:24:45

My team are first to try out a finished bridge.

0:24:460:24:49

It's wobbly. Oh, it's wobbly!

0:24:490:24:51

Wow! Wobbly!

0:24:510:24:53

Really wobbly!

0:24:530:24:54

I'm off. 'I'll have to give it everything to get back in the race.'

0:24:590:25:04

-PANTING:

-Right, cross.

0:25:040:25:05

Three, two, one, go!

0:25:120:25:15

Now for the real test.

0:25:160:25:17

That really is a real soldier on the stretcher!

0:25:190:25:22

-Nearly there...

-Come on, McCourt! Run!

0:25:220:25:26

Coming! We're coming!

0:25:270:25:29

Push him!

0:25:320:25:34

-I'm pushing.

-Push it, push it(!)

0:25:340:25:37

We're on the home straight -

0:25:370:25:38

a 20-metre dash to a waiting four by four.

0:25:380:25:41

And now there's clear daylight between us and Team Dick.

0:25:440:25:47

We did it, everyone!

0:25:510:25:53

It's victory for Team Dom!

0:25:530:25:55

I'm absolutely done.

0:25:550:25:57

We've lost, we've lost!

0:25:570:25:58

Oopsie!

0:26:000:26:02

We nearly lost the casualty!

0:26:030:26:05

Tell you what, that is the fastest bit of bridge building

0:26:050:26:07

I've ever seen.

0:26:070:26:09

Literally from pieces of bridge to a whole bridge

0:26:090:26:12

that can take the weight of about three or four people,

0:26:120:26:14

all in a few minutes.

0:26:140:26:16

Now, THAT was a Monster Build.

0:26:160:26:18

Right, you can get up now, Jay, come on.

0:26:180:26:21

Cheers.

0:26:210:26:23

The bridges might be built

0:26:240:26:26

but the Royal Engineers haven't finished with us quite yet.

0:26:260:26:30

Congratulations, Wood. You got your casualty across first.

0:26:300:26:33

McCourt, unfortunately, your team came last,

0:26:330:26:37

so they will be a forfeit for you. Dom, your team is dismissed.

0:26:370:26:39

-Off you go.

-Everyone, all the teams are dismissed!

0:26:390:26:42

McCourt, for you, it's 20 of your finest press-ups.

0:26:420:26:45

-I can't do press-ups!

-Let's go, stop whingeing

0:26:450:26:48

-and let's get them done. Come on.

-I can only do four.

0:26:480:26:50

Let's go. One. All the way down! Come on, McCourt. Let's go.

0:26:500:26:54

-Aargh!

-Two. Come on, McCourt. I want more effort than that.

0:26:540:26:57

Let's go. Come on. McCourt, my mum can do better press-ups than that!

0:26:570:27:01

Ohhh... Can we go home now?

0:27:010:27:04

So, thank you to our three geniuses for some truly epic bridges.

0:27:070:27:14

Vitruvius, Albert, Hull, you are all Absolute Genius.

0:27:140:27:17

We salute you.

0:27:170:27:18

SQUAD...FALL OUT!

0:27:180:27:21

My idea was the best.

0:27:240:27:26

No, mine was.

0:27:260:27:27

You've got to be kidding! It was mine!

0:27:270:27:30

He's loving it!

0:27:460:27:47

I hate this!

0:27:470:27:49

Dick and Dom turn their attention to the incredible world of monster bridges, tracing the genius ideas that have taken us from ancient Roman arches to elegant cable-stayed suspension spans, to a future where we may see bridges 3D-printed by robots. In their challenge, the boys join the Royal Engineers for an army bridge-build race... complete with a severe dressing-down for the loser.


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