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- เผยแพร่เมื่อ 27 ก.ย. 2024
- "Daly's Bridge", in Cork, Ireland, is better known as the Shakey Bridge. Because it shakes. But what happens when a bridge like that has to be repaired and refurbished? • Thanks to Cllr McCarthy: his site is corkheritage.ie/ !
Edited by Dave Stevenson davestevenson.c...
A thorough study of how the Bridge shakes: publish.ucc.ie/... [PDF]
I did try (a lot!) to get an interview with someone from RPS Group, who were in charge of the refurbishment, but I just wasn't able to make contact. However, I'm indebted to Michael Minehane, principal engineer, whose talk to Engineers Ireland gives a lot of in-depth information about the bridge was refurbished! You can watch it here, along with Cllr McCarthy's history of the bridge: • The History & Rehabili...
Thanks to Youssuf Radwan for the suggestion!
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Pull down the description for my sources on this video: if you'd like to know more, there's an hour-long panel talk discussing the bridge's history and refurbishment from Engineers Ireland!
Yo
Just if your confused, Tom Scott will unlist / private his videos for a-few days before they goes public.
Ty for this video Tom
These videos are unlisted for a set time berofre publishing
Hi
Daly's Brige patch notes:
-Fixed corosion
-New cables and overall updated graphics
-"Bouncing bug" now officially a feature.
They got Valve to do it, apparently
Thanks engineers very cool
apparently epic games said they would pay Daly Bridge to add toxic nine year olds
Rocket Jumping.mp4
- updated localization files
I'm having flashbacks to the radio episode of TechDif where Gary talked about the Americans unpacking London Bridge at Arizona and Tom mused on the existence of an IKEA flatpack bridge and here we are with an actual bridge bought from an actual catalogue and delivered in cardboard boxes!
Link?
Meanwhile, I was reminded of that SS Bessemer Citation Needed episode when they were talking about movements in three directions that cause seasickness.
Jeff Bridges' jet bridges
@@sundhaug92 Gannon?
Probably wooden boxes.
Ooooh Tom Scott does Ireland. Looking forward to seeing what you make
Should be called Tom Scott does the People's Republic of Cork!
hopefully more people do Ireland stuff
@@CptDoot
The company Apple does Ireland stuff
I think the world could do with a Real Engineering Tom Scott crossover video
Colab comming? Nudge nudge wink wink 😁
I love the fact that the engineers took effort and ran simulations to make sure that the wobble stays as close to the original bridge as possible.
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Fun Fact: The restoration of that bridge cost 1.7 million euros, a full 34 times more expensive than the inflation-adjusted cost to build the original bridge.
Which only means they lie about rates of inflation.
Fun Fact: A full restoration of nearly anything, if done properly, is always more expensive than the original. It's all a matter of degree.
Think about NYC Hudson tunnel costs 48MioUS$ in 1927, which are today 793MioUS$, now the nearly identical new one is an estimated 12300MioUS$, probably much more upon completion. The building industrie sucks. Other industries have learned how to deliver more economically, the building industry how to press more money out of the customer, at least politicans and tax payers.
It’s almost like, it’s harder to fix some things things than it is to build new ones, huh.
this is the same with classic cars etc. some cataloged mass produced item becomes a unicate where every piece is special made with the passing of time
The joy I felt seeing some adult jumping like a child in the middle of the bridge exactly when the guest was speaking about people having fun doing just that, good stuff.
That adult was a scientists - we spend all our lives having fun like that.
2:53 you can tell they’re having fun
I'm so glad they circled that lmaoo
@@frogandspanner p
Anything that can remind an adult how it feels to be a child is a force for good & should be preserved!
As a person who lives and grew up in Cork, I went to this park all of the time as a kid. It's really nice to see coverage of the much beloved shakey bridge when all we ever get tourism for is the Blarney Kissing Stone. Shakey bridge is honestly way more fun and genuine to the Cork experience. Thank you Tom :)
Agreed, Fitzgerald park altogether is such a big part of my childhood and needs more recognition, especially the shaky bridge
I also completely agree
Shaky Bridge > Blarney Stone > Anything that Dublin has to offer tbh
@@conormaccarthy249 as somebody in Dublin, agreed
Thanks for sharing! 🙏
Love to see people "testing" the bridge as the interview goes
They won’t be testing it, they know it shakes. They’ll be doing it for the fun of it
@@theleesidesnowman1127 Never hurts to double check! 🌍
Current era: "We need to hire engineers, surveyors, fabricators, it's gonna cost about 10 million euros."
A hundred years ago: "Dude, we can order a bridge from this catalog. 700 pounds."
Ships in boxes: ikea bridge
you can still do that for your standard highway overpass and stuff alike, in any case you need engineers to check suitability and plan foundations
I was aware of mail-order houses (Sears & Robuck had those), but bridges being sold thing was is new to me
@@csmith8503 As they were delivering a bridge, I'd cut them some slack on the delivery schedule.
Ikea did too for a while
As a structural engineer I loved this one and respected the community’s wish to keep their bridge behaving as it used to. Credit to the new engineers too!
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Ok... and thanks for the previous Oks
Haha, the circle around the guy jumping on the bridge got me!
Though, to be fair, if I lived nearby to it, I'd probably do the same thing every time I cross it.
I live in Cork and yes I sometimes cross the bridge to jump on it just for fun.
Everytime I'm near the bridge or Fitzgeralds Park which is adjoining. I must jump on the bridge. I'm married. 2 kids. 39 years old. 😁
@@barryryan14 “Ryan! Please stop jumping on the bridge, you aren’t a kid anymore!”
Ryan: “I must…keep…bouncing…”
@@barryryan14 There's no reason for adulthood to be the absence of fun. Bounce on, Ryan...
@@gojira_breathes_428 no encourage them. if they are jumping they can't or at least it's very hard to drink. I mean before and after sure but during the jump.
50,000 euro for a bridge that held up for 90 years before needing refurbishment? Kieran McCarthy's right, that bridge WAS good value.
And the refurb cost over €1.7m.
The price of labour has increased a lot, but we have cnc machines, calculators, and other computery thingies now so that's cool.
@@VeraTR909 I haven't the faintest idea how one would go about doing an in-depth comparative costing, but someone will know and I'd love to see it. The details of how relative costs change over the long term is fascinating and can provide insights into both economic and social history that headline figures for generalised inflation don't even hint at.
If you are selling enough bridges to need a catalog you are probably making multiples of the same components which means that tooling costs are spread over many bridges. Also that is the cost of materials only, not the on site installation including the foundations.
No that bridge will remain a good value until the end of time.
That bridge has a sibling in my home town of Shrewsbury! The bridge that goes over the river Severn from the quarry to the boathouse pub was built by the same company and wobbles possibly more than this one does. Looks almost identical too but ours is green (last time I saw it anyway)
Porthill Bridge. It even has its own Wikipedia article, which says: "Porthill Bridge experiences significant vibration, even when few people are crossing it - and has done since it was installed. Local pedestrians mostly accept this eccentricity as part of the bridge's charm."
It's a more expensive, and wider, model but otherwise very similar. According to the Wiki the Shrewsbury bridge cost almost four times as much as the Cork bridge - 2,600 pounds in 1922.
Awesome
Ok, so there are 2 more bridges like this.
@@Moloxer Given that they ordered them from a catalogue, I would assume, that there are/were a few more.
Tom jumping on a bridge is something I didn't know i needed in my life.
@@EEEEEEEE F
It is very much worth it
> A Corkman
If you took the shake out of the Shaky Bridge you'd just have a bridge. I'm glad you gave this coverage, Tom, it's a rare example of Cork City Council doing something completely right. It's 5 minutes from University College Cork as well so generations of students have made the pilgrimage to come and bounce on it - myself included!
If you took the shake out of it you wouldn't have a bridge at all.
I love that you could buy bridges from a catalogue at one point.
Flat-packed bridges!
Shopping for your new town at IKEA.
You probably still can, you just don't know about it.
@@thecornfieldiii2069 can confirm you still can, but less as an entire bridge and more as components, such as Banagher Concrete have a manual of precast concrete beams for bridge design.
I'm disappointed it's not still an option. Though nowadays, you'd probably shop on Amazon for them, instead.
This makes me absurdly happy. Not only that it's a really high quality bridge, but that it was able to arrive in boxes from a catalog, that people embraced the shake, and that the engineers (under direction of the public) rebuilt it to keep shaking.
As someone who grew up in Cork I've been delighted as a child and adult by the shake. Do more videos about Ireland please Tom.
The idea that "If is doesn't shake, it will break" is also true for wooden roller coasters.
Steel roller coasters too. Just with very different frequency and amplitude.
every structures shakes if there is a dynamic load or a sudden load
of all structures, really. Forces cause stresses, and stresses can cause strains (and thus) displacements. Rigid boundary conditions that restrict these displacements can result in even higher stresses, possibly in excess of a materials compressive or tensile strength.
As a Cork person, I can say that yes, the bridge is shakey. Also Cork has a butter museum.
There must be a cork museum in Cork?
My favourite item in the butter museum is the bog butter that's "probably" mediaeval
Conversely, if the balance of the universe is to be kept, there must have to be a cork museum in Butterley!
I'm always amused at strangely-specific museums, I'd love to see what all was in a butter museum!
Can’t believe I missed Tom Scott in Cork
Shaky bridges are great. I remember many years ago when I was at school going across a suspension bridge in Scotland with a few friends. We decided to see what would happen if we walked in step. I think we managed about 3 steps in unison before realising just how bad an idea it was. It's really amazing how quickly the feedback builds up if you manage to match the resonant frequency of a bridge.
Did you get it to bounce or swing?
@@iamdave84 it bounced so much it threw us in the air. Amazing just how quickly it built up.
Not sure if you're aware, but a French bridge collapsed after soldiers marched across it.
Every army then ordered troops to break step as they went over bridges.
@@MandolinMagi You probably mean the Broughton Bridge collapse, which while the marching contributed to the collapse, the bridge was poorly constructed and failure was actually found to be inevitable. That led to breaking step when crossing bridges in the British and French armies. In France, marching at the Angers bridge's resonance frequency is only partially the cause of collapse too. The soldiers were actual already ordered NOT to march in cadence when crossing. But the bridge was poorly maintained and there was heavy winds. The various loads were the primary reason why Angers bridge collapsed so in both cases it was multiple contributing reasons.
This bridge is a staple of the history of cork. As a child, going into Fitzgerald's park all I wanted to do go to the shakey bridge and jump on it, forget the swings or slides,
make it shake. In a small city it's this thing that stands out the most. And of course we are the rebel county.
Thats my home town! Thanks for visiting!
Mine too lad, theres no place like it.
My friends older brother was a structural engineering student 2 years ahead of us in CIT, now MTU and was with the company RPS' bridge department and worked on this project, ultimately doing his final year project and I believe his masters project on it too. Also it is the Shakey Bridge no one in Cork calls it Daley Bridge unless they are being formal for some reason.
the Cork city government probably has to call it Daley Bridge when they're actually talking about it
subtitle error at 3:56, it should be "shake" not "shape, just so anyone who is using the subtitles knows. (also good job whoever subtitles, as i have watched so many tom scott videos and so far this is the only one i have noticed an error on, so keep up the good work!)
Hey I'm from Cork and I was shocked and delighted to see you made a video in my hometown. Thank you! If you're still around I'll get you and the crew a pint!
50k Euros for a bridge that's worked for nearly a century. Damn, that's value for money.
It does help that it is only for pedestrians and perhaps a lost bicycle or motorbike...
50k / 90 = 555 /year.. yup.. real good value fir money :-)
I mean, it's not like it's completely impossible today. It's just you can't buy bridges off a catalogue anymore, probably because everyone knows that the government will overspend
@@mkontent Governments overspent back then too. It's just that most bridge aren't super narrow, pedestrian only bridges. Like that's a rather narrow selection of bridges.
@@DarkDutch007 Be interesting to try that one with the Garda! "Honestly, officer, I had no idea I was no longer on a road." 😁
Used to jump off this bridge during the summer when I was younger, even climbed to the top of one of the towers and jumped in to the river, good fun, thanks for showing it to the world Tom👍
I'm imagining it would work like a diving board.
wow. jumping off from one of the towers looks sketchy af
One of the rare times a red circle was of use. Amazing.
I love how Tom keeps the video straight to the point and short. It is much more concise than many other channels trying to lengthen the video to earn more money.
I agree but there’s been a couple of videos I could of watch for a lot longer
In a world of constant bad news and horrible beings, I am more than thankful to you Tom for this bit of lighthearted warmth. Even if only in relation to a refurbishing of a bridge, it's still a piece of delight to learn and hear about. Thank you
Good to see Cork in Tom's video this week. I've lived in Cork all my life and the Shakey Bridge is definitely one of the best attractions in the city. The view from the bridge is lovely and the shaking is obviously a huge novelty. Would definitely recommend it to visitors!
Agreed, the shakey bridge is one of the best parts of Fitzgeralds park!
I need a full one hour video of Tom frolicking around on that bridge, it‘s priceless :D
What a sight to behold
What an outstanding story and bridge. I love the history of why things are where they are.
There's a bridge that did this in my hometown in rural New Zealand! It was also a protected structure with virtually the same rules as this one. It was made to wobble on purpose and it's been loved by all ages for decades :)
I live in Cork, and that bridge is actually very fun to walk on for certain! Didn't think it'd ever make a video like this though!!
There is a bridge in Warrington, Cheshire, England called the Howley suspension bridge which spans the river Mersey, built in 1912 by the same company and jumps up and down very much like the bridge in the video, cool to see that there are multiple similar bridges.
Company must have been specialists in shaky bridges...
I mean, they ran a bridge catalog. I bet there are a lot of bridges like this all over the region.
One in Inverness too.
I have walked over both!
@@oraach Bridge Building was a shakey business back in the 1900s
Fun fact: I live near this same bridge, but just in a different location! It must have also been orderd from the bridge catalogue. Look up Ilkley Suspension Bridge, and you can see it's almost identical, just in different colours!
(It is also just as bouncy)
There's one in Langholm, Dumfries and Galloway too.
Great to see Tom visiting my second home! The Shakey Bridge is a Cork landmark. I've been on the bridge both before and after reconstruction, and the shake has remained constant. Thanks for shining a light on this lovely little idiosyncracy in bridge building :)
Buying a cheap bridge off a catalogue which shakes would have been a good story. But the fact that they repaired it and ensured that the shake didn't go away is what makes this amazing!
Keep the shake: a political slogan we can all get behind.
I think a good slogan would be something like "My bridge shake brings all the boys to the yard"
"We have the technology and the science to build a more stable bridge"
"No."
Humans are awesome.
Just because you can, doesn't mean you should.
Am I using it right?
@@mmseng2 yes
@@mmseng2 Well... In this case, you probably should. So it's less vulnerable and doesn't have to be repaired as often. But, humans and their traditions.
"keep the shake. keep the shake."
@@ShroudedWolf51 I actually agree, but that's why I thought the application of the phrase was humorous.
I find it amazing to see just how good historians the Irish are. Here in Australia you'd be lucky to find any material on the entire region I live in before the 1960s.
I lived in England as a child and in Western Canada now. I wouldn't exactly say that Canada 'has no history', but it's so different. Canadian history as a country doesn't start until so late in English history, and so much was built so recently. Certainly no Roman roads or Stonehenge.
Check out Newgrange in County Meath... its one of this the oldest structures in the world constructed in 3200BC - Older than the pyramids and stonehenge.
@@hairlessape5107 Same with America & for the same reason.
I really appreciate that this one unintended feature was significant enough to be preserved.
I can literally walk there in about 45 minutes. This bridge used to be part of my daily commute in 2018. I had no idea it was disassembled back in 2017
Give it time, we all get one.
Mine was the linby video
The public consultation was in 2017 it was rebuilt during the lockdown
As a student of conservation of heritage, I never could have thought you, or anyone would make a video about it. I had been watching these videos to learn about the fields I had no knowledge about.
As a Corkonian and a big fan of your videos it's amazing to see you visit our city.
There's multiple of these bridges in Inverness in the Highlands, you've given me a throwback to my childhood walking across these and walking with the wobbles making them as big as possible. I always remember at least a few people hating it and we always did it more because of that. Good times
😂😂
Of course thou would try to make those persons miserable. It is the sensible thing to do.
@@dannypipewrench533 Seeing their terrified faces, what a joy.
There's one in Langholm, Dumfries and Galloway too.
@@Robbiefleggers Always fun.
I've been loving the new era of clickbait arrow thumbnails. Tastefully subtle, but still attention-catching!
2:53 that moment is so genuine, I love it
We've a very similar, if shorter, wooden suspension bridge in my Maine hometown. The bounce in the center is quite strong and I remember my friends and I daring one another to cross. To this day, I can't cross it without a little shiver of thrill... And fear.
I love these little gems which showcases how people enjoy the little things and how much due diligence engineers take in their craft/work, great video as always tom
I'm still taken with the 'Bridge Catalog' from a century ago. Reminds me of the Sears catalog where in you could buy a house or a tomb stone or cloths for the family.
In Kirstenbosch, Cape Town, there’s a bridge called the Boomslang which is intentionally designed to wobble
That translates as tree snake. Is it curved or s-shaped as well?
@@egbront1506 Yes. It's a treetop canopy walkway and it does indeed curve around the trees.
Mooie namen
I've walked on this tree canopy bridge walkway, thanks for the reminder, it was very cool!
Brilliant video. As an Irishman myself, I’d love to see more videos of cork and Ireland as a whole. Even though I’ve crossed this bridge before, I didn’t know much of what was explained in the video.
Only tom can make me sit on the edge of my seat for a video about a pedestrian bridge
The pedestrian bridge wasn't pedestrian, it was quite interesting!
Tom Scott: Here's this cool bit of engineering/architecture, isn't that neat?
Also Tom Scott: I'm gonna set myself on fire, go 0g, ride in a race car, and do some parkour running.
And that's why it's on 2 separate channels 😁
Now that's a quality preservation. If I ever get to go visit Ireland, I must check out this bridge.
Hi Tom, Myself and my girlfriend met you briefly in the park just after you shot this. I feel like we gave you a bit of a fright actually: "OMG ARE YOU TOM SCOTT???!! YOU'RE A CELEBRITYYYYYY!!" Apologies for distracting you from your editing. Hope you enjoyed your stay in the real capital!
In Missoula, MT we have a marching band that combines the local highschool bands. One of the proudest successes of each year was that the students, when marching together in unified step, they were able to give the Higgins St bridge a sine wave wobble that students could feel marching across during our annual homecoming parade for the local college. Just a fun note if you feel like visiting from a (multi-year) marching band member!
The fact that this bridge's repair was able to be funded for the work they wanted to do is truly heartwarming.
Love this, brilliant that the local consultation rested on keeping the shake as well. Thanks Tom!
That is so cool, that they kept it the way it was!
A big thank you to the workers and engineers that restored this bridge to it‘s former glory! Keep up your great work!
I'm a long term viewer and Cork native! This made my day!
The random guy jumping during the interview was hilarious
Catalogue bridges were popular in the US from the 1880's to the 1920's. They were commonly known as 'tin bridges' because of how light weight they were, most being designed for a 10 ton load
Interesting, thanks
I've been on that bridge. My college is literally like 2 mins away from it. It's crazy to see this on here
There's a bridge like this in one of the community gardens I used to live near, it's much shorter and is over a shallow, slow canal rather than a river, but it's also deliberately made bouncy. I think it's either to slow foot traffic down, or a byproduct of making it durable against the wind. Incredible that this can also be achieved safely on a much larger scale.
Great to see you out and about in Ireland . You should visit the mono rail in cork and how Ireland intruded down aeroplane pilots in ww2.
I am from Ireland and I’m 17 I could not count the amount of times I jumped of the Shaky bridge. One of the best feelings
I love the shaky bridge so much, every time I go to Cork I walk across it at least once
You mean at least twice?
i like how tom is keeping his old thumbnail design but at the same time keeping it relevant
What's sad is we have a old rail bridge built in 1908 that was converted to a 1 lane vehicle bridge, closed in 2017 and scheduled to be destroyed this year :( I wish it could be saved as a walk bridge but the city ignored the people and will tear it down and the new bridge to replace it isn't even going in the same area
Very similar to the three bridges in Inverness - also very wobbly. Thanks for another upload Tom!
The Leaning Tower of Pisa must be happy to finally have a friend just like itself 😄
It is the same. If they repaired the tower by making it not leaning, they would effectively destroy the point. :)
People just want to have fun shaking their bridge
There was a suspension bridge near me on Mackintosh Island, Surfers Paradise, and it was similar in length to this one but it was made of wood. The area is used as a street circuit motor racing venue once a year so it saw lots of pedestrian traffic for a few days, and walking across it while 300 other people were doing the same thing was a lot of fun!
Sadly it has been replaced by a much wider and more appropriate bridge made of steel and concrete, but that’s probably for the best given the risks that may have been approaching after 20+ years of use.
I have lived in co.cork for 10 years, from Suffolk England and have never heard of this bridge. Thanks Tom
I love that preservation is an important consideration in some projects =)
Not everything needs to be "fixed"
I love how an oblivious bug has become a feature that absolutely enriches peoples everyday live ^^ Usually a bridge which such a massive shake does indicate a certain danger of overextending but it seems that despite the shake the bridge itself is over-engineered enough that the humans on it wont bring it down.
"I love how an oblivious bug has become a feature that absolutely enriches peoples everyday live"
You don't work for Bethesda by any chance?
i love how whole bunch of very serious engineers, council members, historians etc worked very hard to keep it unnecessarily bouncy
These lighthearted videos help with my sanity.
Thank you for saying "damp" instead of "dampen" when talking about vibration. That might be one of my biggest pet peeves that I know I shouldn't get mad about.
There used to be a little suspension bridge like this one in my hometown that had a similar rebuilding program, unfortunately they strengthened the towers so it doesn't shake anymore.
“It probably wasn’t intentional”
Imagine that one guy was like “haahaa! They never gonna see this coming”
Or maybe
Shaky bridge £700
Rigid bridge £900
Ah, whatever. Shaky bridge it is.
Where I grew up there are multiple suspension bridges that cross the river. Naturally they are referred to as the swinging bridges.
I visited that bridge years ago, I didn't even realise there was a story, nor did I know that it was supposed to be shaky. Cool video Tom.
Thanks for the video Tom! I grew up in Cork and spent many a Sunday afternoon jumping on the bridge. Have since moved to England and haven’t seen the refurbishment. It’s looking fantastic!
I'm the same. I legally have to wobble every 5 minutes, otherwise I'll be sued by noddy.
As an engineer, this isn't even in the top 10 of weird parameters I've had to design around.
I’m curious what some of strangest were if you feel like sharing 😁
what were some weirder ones then? :D
I'd love to hear them
My favorite was from a previous job years ago. I needed to formulate the material in a shower curtain such that you couldn't identify genitals .75m behind from 1m in front but you needed to be able to identify a person from the same distances.
Second favorite was from the same job. Urinal cakes needed to dye a specific quantity of urine a color range in defined stream conditions
@@LikelyToBeEatenByAGrue I wish I could have sit in on those consults and just hear the conversation that ensued as to how much genital was defined as unidentify able and such. That must have been one day no one could keep a completely straight face.
0:05 "After a businessman who helped fund it" - ahhh yes, back when they helped communities.
I sometimes wonder why did that stop, seems like every other thing from the 19th and 20th century were built by businessmen..
These short form fascinating videos are perfect for watching over breakfast with my husband. 💜
Absolute god-tier video title
Can't get over the Bridge Catalogue 🤣
Just imagining them ordering like it's from Argos. Quick stock check on the chunky buttons, YES! It's in stock! fill in the little slip with the tiny pen, head to the cashier, pay, go to collection point B, wait for the Argos minions to return from their Narnia with your bridge 😎
The Laminated Book of Bridges!
you've heard of the cliff that refuses to be a cliff
get ready for the bridge that refuses to be steady
Never would i ever have thought tom scott would make a video in my hometown
this is really wholesome, i needed this after reading and watching bad news for the last couple hours
Legal wobbling as opposed to the bridge illegally wobbling seems unnaturally funny to me
1:11 Bought a bridge off the catalogue. We think we are so modern these days ...
As Someone who lives in cork I can confirm the bridge is very shaky to this day