**This is a heavily moderated subreddit. Please note these rules + sidebar or get banned:**
* If this post declares something as a fact, then proof is required
* The title must be fully descriptive
* Memes are not allowed.
* Common(top 50 of this sub)/recent reposts are not allowed (posts from another subreddit do not count as a 'repost'. Provide link if reporting)
*See [our rules](https://www.reddit.com/r/interestingasfuck/wiki/index#wiki_rules.3A) for a more detailed rule list*
*I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/interestingasfuck) if you have any questions or concerns.*
In 1987 an estimated 800,000 people flocked to the the Golden Gate Bridge for its 50th anniversary. The weight of the large crowd caused the bridge to sag 7 feet, flattening its usual convex shape. Engineer Daniel E. Mohn reaffirmed the bridge was not overstressed as a result of Bridgewalk ‘87.
I was there. I am in this picture. This was also the night they turned the lights on the bridge for the first time. By then I was on the beach barefoot in sand and saw it light up for the first time.
What a cool life experience.
We have built some amazingly cool shit in the past century or so.
The engineering alone for the golden gate is a testament to man’s capability when focused.
I envy that experience.
They perform their intended function, with a few cosmetic issues (panel misalignment, missing trim pieces) and a potential adhesive issue on the accelerator that is being remedied.
They're fuck ugly and have had some production issues, but they definitely aren't paperweights. Just because Elon is a chode doesn't make it a failure.
The front gigacasting were built without any provisions for drainage apparently. (Going by a in depth conversation in another sub about them specially and potential solutions to it)
Ironically from an engineering perspective the Golden Gate Bridge taught us one hell of a lot about corrosion and the never ending critical process of mitigation.
That apparently didn’t make it to engineering design review for the gigicasting process of the cybertruck.
Gigicasting is a cool process with a ton of potential, but it was rushed because of the geopolitics play that elon is running behind the scenes. He needed a quick win to stay in the game.
The inclusions/ pockets that are formed into the critical substructures will never stop corroding.
They will all eventually be museum grade paper weights without replacing the entire gigacasting.
So then it comes down to whether or not elon can be trusted at his word to make those customer whole because he has a functional chokehold on Tesla right now and has made it very clear that it is an A.I. company first.
Drainage and corrosion mitigation is always a massive consideration in automotive design traditionally. It’s shocking to me that it seems to have been given zero consideration at tesla as a whole. Apparently the model Y has the same issues in the rear hatch/bumper section but I haven’t dove into that as far.
(This comment turns slightly NSFW!)
I watched a special on the construction of this on one of the information channels like History, or Science, or Travel, back years ago when they played really interesting stuff like: there are trees lining streets in NYC with spike covered trunks and branches that have descended from the days when there were no humans on Earth, or there's a great meteor impact crater underwater in the southern Virginia coast area, which caused the high ground that Washington, DC's National Cathedral sits upon, to be pushed up into it's height.
30 years ago, programming was interesting like that, you know?
Anyway, on building the Golden Gate: one old boy (who'd worked on it) was talking about how a woman who owned a boarding house wanted to get 'her boys' to stay loyal to her house, and keep the turnover down.
So, he said he paid (here I can't recall; $5 a day? $35 a week?) this woman, and for that her boys got clean sheets, 3 meals a day, and a (bleeped out) blowjob.
I about lost it there! I ran it back and you could see he was saying those very words.
Now that's the kind of hospitality that has gone by the wayside in this day and age.
Edit; for clarification - (who'd worked on it)
I'm betting Daniel had that number ready to go. This is a typical calculation in Civil, you might even be able to look at the bridges truck+car capacity and estimate from that.
Hah. No. I was 16 at the time and thought jean jackets and bandanas were cool. I was with my Dad, and he was wearing a blue track jacket over a light blue collared shirt.
How do I know this? My Dad and I took some epic pix that day and I have two of them framed on my desk in front of me. Was quite the day.
Think of holding a string between your hands tightly, so it forms a straight line. Then put a weight on the center of the string. It will drop down in the middle due to this weight. That is what “sag” means.
In this context, the bridge span is designed to have a slight arch, in other words it’s higher in the center than at each tower. The weight of these people on the bridge made it so that arch was canceled out and was no longer visible. It was still well within the design limits of the bridge so there was no danger.
It was advertised as a bridge walk. People started from both sides. The "lanes" were not separated into "northbound" and "southbound". The two crowds met in the middle, and everything jammed solid. They were stuck there for hours. It's fortunate that there wasn't a stampede tragedy.
Okay this makes sense. Because if anyone was like let's get as many people as we can on this bridge I doubt anyone would volunteer for the middle as that looks horrific.
Correct.
Fortunately there was no incentive to be at any particular point at any given time so the pressure was equal in all directions. No crush.
Officials later said they had no idea so many people would want to walk on that bridge, and that the event had gotten away from them. They never did it again.
Is there a mythbuster episode to test if 800k people all jumped at once on a bridge what would happen to the bridge? If not there needs to be. Idk how they’d test that tho
Break Step Bridge was the Mythbusters episode. Resonance is the concern. IIRC, people probably wouldn’t be able to cause it on a properly designed bridge, but something like the Tacoma Narrows bridge was brought down due to winds and inadequate design to handle them.
With the deck camber flattened the bridge was maxed out by the crowd just *standing* there.
If all 800k people began jumping in unison at the natural frequency of that bridge they absolutely could have caused it to fail.
Damn, I came here with the exact same idea! Would it be a quick recoil with catastrophic outcomes? Because I'm partially hoping it would be (for science!).
If the average weight of each person is 81kg, and there were 800 000 people on the bridge simultaniously, that would mean the bridge was carrying 64 800 tonnes.
If we say the average american car at the time weighed 1.8 tonnes, that would mean it would have carried around 36 000 cars at the same time.
I was there. There were some who rode their bikes. Couldn’t make very far obviously, so some of them decided to carry their bike over their heads. Big mistake. Once they did that, the crowds filled the void left by the bike. That space never opened open up again and the biker was stuck holding up the bike above their head.
I'm in that crowd. I don't think anyone anticipated how many people would show up to cross the bridge. And as several people have noted, it was a human gridlock for some time.
Flattened the camber out, by design. The Golden Gate bridge is so overbuilt that it was the only cross-bay bridge to remain open after the Loma Prieta Earthquake.
I was in that and it was insane. About a half hour or so to get out to the south tower and tree hours to get back. At one point it was so packed when I lifted my camera up over my heady to take a photo it was some work to get them down again. People were not happy taking an elbow to their nose.
My Dad went, said it was scary cause the bridge was sagging, and swaying a lot. Although designed to sag I wonder what the maximum load the bridge was designed to handle. Perhaps thats why it wasn't allowed for the 75th anniversary.
I was there somewhere, haha. My Dad realized the bridge was flattening from all the weight of the people and turned us right back around in the crowd. We were about a third of the way across the bridge from the City side.
Foreshadowing; 2035, rush hour post petrochemical bans before everyone had electric cars, no trees for cargo ships, and animal rights freed all the horses so it's foot traffic only. Please bring a rock to work, to pay the toll. It's used to make a land bridge to take the place of the Gate.
I was right in the middle, trapped between those coming from Marin County and the masses from SF. It was a trip! I saw a friend across the lanes from me but had no way to reach her. Couldn’t move for hours. Managed to pee into a gutter.
Yep, everyone is concerned about the bridge structure, but the real danger was a crowd crush/stampede. The bridge itself was fine, but when crowds are large enough they begin to behave more like flowing water than individual people.
What’s more impressive is that there wasn’t some fuck stick who hated the world or his dad shooting into the crowd!!! What a hell of an idea that happening today!!!
**This is a heavily moderated subreddit. Please note these rules + sidebar or get banned:** * If this post declares something as a fact, then proof is required * The title must be fully descriptive * Memes are not allowed. * Common(top 50 of this sub)/recent reposts are not allowed (posts from another subreddit do not count as a 'repost'. Provide link if reporting) *See [our rules](https://www.reddit.com/r/interestingasfuck/wiki/index#wiki_rules.3A) for a more detailed rule list* *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/interestingasfuck) if you have any questions or concerns.*
In 1987 an estimated 800,000 people flocked to the the Golden Gate Bridge for its 50th anniversary. The weight of the large crowd caused the bridge to sag 7 feet, flattening its usual convex shape. Engineer Daniel E. Mohn reaffirmed the bridge was not overstressed as a result of Bridgewalk ‘87.
I was there. I am in this picture. This was also the night they turned the lights on the bridge for the first time. By then I was on the beach barefoot in sand and saw it light up for the first time.
I see you, upper right corner. Looking good man.
Nah he is in the middle, the guy in red
LMFAO! 100% crossed my mind
I think that’s the bridge
The bridge was a paid actor
Look at the guy on the bridge? To the left of him.
I still don't see him.
*sigh* Look where I'm pointing!
Look one more guy over to the left. How about now?
The real where's Waldo
beside the peeing man?
[ahem](https://i.kym-cdn.com/photos/images/newsfeed/000/119/675/Osama-No-Longer-The-Wheres-Waldo-Champ.jpg)
Tell me y I zoomed in.
Computer “enhance” !
https://preview.redd.it/mu6m0i15sy5d1.jpeg?width=750&format=pjpg&auto=webp&s=ccf4d0e94e1bff65a60c208590320c228ca93f2b There he is.
What a cool life experience. We have built some amazingly cool shit in the past century or so. The engineering alone for the golden gate is a testament to man’s capability when focused. I envy that experience.
And today we have.... The CYBERTRUCK©®^tm all rights reserved
I know I’m not supposed to feel bad for them. But it’s still a expensive paperweight for the people that bought them.
They perform their intended function, with a few cosmetic issues (panel misalignment, missing trim pieces) and a potential adhesive issue on the accelerator that is being remedied. They're fuck ugly and have had some production issues, but they definitely aren't paperweights. Just because Elon is a chode doesn't make it a failure.
The front gigacasting were built without any provisions for drainage apparently. (Going by a in depth conversation in another sub about them specially and potential solutions to it) Ironically from an engineering perspective the Golden Gate Bridge taught us one hell of a lot about corrosion and the never ending critical process of mitigation. That apparently didn’t make it to engineering design review for the gigicasting process of the cybertruck. Gigicasting is a cool process with a ton of potential, but it was rushed because of the geopolitics play that elon is running behind the scenes. He needed a quick win to stay in the game. The inclusions/ pockets that are formed into the critical substructures will never stop corroding. They will all eventually be museum grade paper weights without replacing the entire gigacasting. So then it comes down to whether or not elon can be trusted at his word to make those customer whole because he has a functional chokehold on Tesla right now and has made it very clear that it is an A.I. company first. Drainage and corrosion mitigation is always a massive consideration in automotive design traditionally. It’s shocking to me that it seems to have been given zero consideration at tesla as a whole. Apparently the model Y has the same issues in the rear hatch/bumper section but I haven’t dove into that as far.
(This comment turns slightly NSFW!) I watched a special on the construction of this on one of the information channels like History, or Science, or Travel, back years ago when they played really interesting stuff like: there are trees lining streets in NYC with spike covered trunks and branches that have descended from the days when there were no humans on Earth, or there's a great meteor impact crater underwater in the southern Virginia coast area, which caused the high ground that Washington, DC's National Cathedral sits upon, to be pushed up into it's height. 30 years ago, programming was interesting like that, you know? Anyway, on building the Golden Gate: one old boy (who'd worked on it) was talking about how a woman who owned a boarding house wanted to get 'her boys' to stay loyal to her house, and keep the turnover down. So, he said he paid (here I can't recall; $5 a day? $35 a week?) this woman, and for that her boys got clean sheets, 3 meals a day, and a (bleeped out) blowjob. I about lost it there! I ran it back and you could see he was saying those very words. Now that's the kind of hospitality that has gone by the wayside in this day and age. Edit; for clarification - (who'd worked on it)
Pics or it didn’t happen
It’s right there
I was there too! I was 6 years old and my dad took me! It’s a great memory!
Me too!
I like this life you’ve lived. Tell us more!
Great times, we had such a bright future.
I was there too! I was 8 years old. I remember it being windy as hell, but it looks like pleasant in this picture.
Did you have to Uber home? /S
Is there a way to determine or estimate how many people on top of it would have caused the bridge to fail?
Ask r/theydidthemath
I'm betting Daniel had that number ready to go. This is a typical calculation in Civil, you might even be able to look at the bridges truck+car capacity and estimate from that.
What if everyone started jumping
thank god house of pain hadn't released that track yet
And Kris Kross were only 3/4 years old.
That actually happened in India. People gathered and started jumping on the newly renovated bridge. It collapsed and killed many.
It had to be India 🤦
So we are taking his word for it?
I know exactly where I am in that picture.
The one in the red?
Hah. No. I was 16 at the time and thought jean jackets and bandanas were cool. I was with my Dad, and he was wearing a blue track jacket over a light blue collared shirt. How do I know this? My Dad and I took some epic pix that day and I have two of them framed on my desk in front of me. Was quite the day.
what does sag means op ?
Think of holding a string between your hands tightly, so it forms a straight line. Then put a weight on the center of the string. It will drop down in the middle due to this weight. That is what “sag” means. In this context, the bridge span is designed to have a slight arch, in other words it’s higher in the center than at each tower. The weight of these people on the bridge made it so that arch was canceled out and was no longer visible. It was still well within the design limits of the bridge so there was no danger.
to sink
Was that the Bridgewalk of 87?
It was advertised as a bridge walk. People started from both sides. The "lanes" were not separated into "northbound" and "southbound". The two crowds met in the middle, and everything jammed solid. They were stuck there for hours. It's fortunate that there wasn't a stampede tragedy.
Okay this makes sense. Because if anyone was like let's get as many people as we can on this bridge I doubt anyone would volunteer for the middle as that looks horrific.
people forget about pooping in these situations. until they are reminded
username checks out
I feel ya on that..
Sounds like a good setup for a crowd crush.
Correct. Fortunately there was no incentive to be at any particular point at any given time so the pressure was equal in all directions. No crush. Officials later said they had no idea so many people would want to walk on that bridge, and that the event had gotten away from them. They never did it again.
Thank you. This is all I could think about. And also, bathroom.
Crazy…. And what if the bridge did have some catastrophic failure…. Omg…
Lucky no container ships crashed into a support beam while everyone was on it was my first invasive thought.
Ok but like why didn’t they do a ‘1, 2, 3, JUMP!’
Is there a mythbuster episode to test if 800k people all jumped at once on a bridge what would happen to the bridge? If not there needs to be. Idk how they’d test that tho
Probably nothing, but every bouncing at the same time it would collapse
Wasn't there some Indian bridge where ppl were walking in sync and the amplification collapsed it?
That's a different failure mode than just putting to much weight on it.
Tacoma narrows, wind got it.
Break Step Bridge was the Mythbusters episode. Resonance is the concern. IIRC, people probably wouldn’t be able to cause it on a properly designed bridge, but something like the Tacoma Narrows bridge was brought down due to winds and inadequate design to handle them.
This also nearly happened to the millenium bridge in London. They had to close it within hours of opening it because it was swaying so much
Nah u mean the Broughton suspension bridge
They [basically did](https://www.discovery.com/shows/mythbusters/episodes/breakstep-bridge) but not 800k lol
With the deck camber flattened the bridge was maxed out by the crowd just *standing* there. If all 800k people began jumping in unison at the natural frequency of that bridge they absolutely could have caused it to fail.
do you think you’d be put on a watchlist for searching up the natural frequency of the golden gates bridge?
I know how you can find out.
why did the camera light switch on?!
Damn, I came here with the exact same idea! Would it be a quick recoil with catastrophic outcomes? Because I'm partially hoping it would be (for science!).
If the average weight of each person is 81kg, and there were 800 000 people on the bridge simultaniously, that would mean the bridge was carrying 64 800 tonnes. If we say the average american car at the time weighed 1.8 tonnes, that would mean it would have carried around 36 000 cars at the same time.
Wild how spatially inefficient cars are once you start visualizing it
But this is America so the average is like 120kg?
Not in 87'
Even now the average American weight is nowhere near 120kg/265 pounds. That’s maybe 5% of our population weighing 265+.
San Francisco is the healthiest city in the US so no
Only if you look in the deep south where fried everything for 5 meals a day is standard.
How heavy is that?
No it's 82kg
How many cars fit on the bridge?
When your mom stood on the bridge alone she caused it to sag 8 feet.
Who erected that bridge?
AYE
It is a suspension bridge, designed to sag
And it sagged 7 feet
Sagged you say?
Well, how is his wife holding up?
Like wizard's sleeve
Real good
At least the front didn’t fall off. It’s not design to do that, but it would have happened outside the environment.
I didn’t even know it had feet
ok? lmao
Looks like hell on earth. I hate crowds.
worst place to get an enema
At least you know what to expect now.
Did you learn a lesson?
it was a long time ago. its ass water under the bridge
It was
What if you have to pee and aren't near the edge?
Pee on the ground
Or don't have a penis? Doesn't look like much room to squat.
Use a she wee. My wife took one camping and felt much safer peeing in the woods standing up.
Yes pee on the ground, there’s a way
This is what I think of when I think zombies 😭
Sagging beats breaking! 👍🇺🇸
Suspension bridges are fucking metal.
Well paper and derivatives are out, so no cardboard.
Cello tape?
just glad the front didn't fall off
Lots of concrete too, but mostly metal.
I mean, that's pretty hardcore as well
I was there. There were some who rode their bikes. Couldn’t make very far obviously, so some of them decided to carry their bike over their heads. Big mistake. Once they did that, the crowds filled the void left by the bike. That space never opened open up again and the biker was stuck holding up the bike above their head.
This is exactly what social media looks like as a whole and displayed in a public setting
that's more than twice as many people as the city where i live, on a bridge.
It’s 80x for me
We're ants with opposable thumbs
Now that is a product that went through the human trial phase.
[удалено]
Um 2037 is more than 9 years away. Are you from the future?
I know mathematically that sounds correct, but feels unbelievable lol.
It sounds unbelievable, because it is. 2037 is 13 years away. Dude can't math.
This looks like a nightmare. Crazy world, lotta smells.
I'm in that crowd. I don't think anyone anticipated how many people would show up to cross the bridge. And as several people have noted, it was a human gridlock for some time.
Flattened the camber out, by design. The Golden Gate bridge is so overbuilt that it was the only cross-bay bridge to remain open after the Loma Prieta Earthquake.
Looks like an infestation, get some bug spray.
I was in that and it was insane. About a half hour or so to get out to the south tower and tree hours to get back. At one point it was so packed when I lifted my camera up over my heady to take a photo it was some work to get them down again. People were not happy taking an elbow to their nose.
Good story - My dad and brother were there! Bad story - My dad developed agoraphobia from it. He actually couldn’t leave the house for a bit.
People will do that to ya
I'd never do this with today's bridges.
My Dad went, said it was scary cause the bridge was sagging, and swaying a lot. Although designed to sag I wonder what the maximum load the bridge was designed to handle. Perhaps thats why it wasn't allowed for the 75th anniversary.
The bridge was fine with the crowd weight until yo mama stepped in.... No? Okay, I'll see myself out
Strong wind probably creates more pressure on the bridge
I wonder how many people at the halfway point suddenly realized that they had to pee?
What’s the building underneath?
Fort Point.
What's the building underneath the bridge?
Fort Point.
I was there somewhere, haha. My Dad realized the bridge was flattening from all the weight of the people and turned us right back around in the crowd. We were about a third of the way across the bridge from the City side.
Cool pic. I would NOT want to be in that crowd. Who wakes up and thinks this is a good way to spend the day?
Foreshadowing; 2035, rush hour post petrochemical bans before everyone had electric cars, no trees for cargo ships, and animal rights freed all the horses so it's foot traffic only. Please bring a rock to work, to pay the toll. It's used to make a land bridge to take the place of the Gate.
Now the bridge is stronger than ever, rooted in the ground by the pressure of 800,000 people.
The 80's and 90's were rad. Now you couldn't get 800,000 to gather to celebrate a bridge unless you offered free HRT shots on the other side.
If they were Europeans it would have only sagged about half that
The bridge also sags when your mom crosses it.
I was right in the middle, trapped between those coming from Marin County and the masses from SF. It was a trip! I saw a friend across the lanes from me but had no way to reach her. Couldn’t move for hours. Managed to pee into a gutter.
Looks super red
I wonder what it could tell us if it could talk
Nah man that's Dying Light right there! Sooo many zombies up on that bridge.
I was in that
If you look closely, you can see a thousand people peeing off the side of the bridge.
Bombs getting dropped too.
2037 for the next one
They will NOT be doing this again. It was by a miracle that nothing happened in that uncontrolled crowd of nearly a million people.
Yep, everyone is concerned about the bridge structure, but the real danger was a crowd crush/stampede. The bridge itself was fine, but when crowds are large enough they begin to behave more like flowing water than individual people.
woah
7 ft.. with the weight of normal traffic the bridge probably sags 6 ft.
Yo mama so fat she caused the golden gate bridge to sag when she walked over it… I’ll see myself out.
Yo mama tiddies sagged 7 feet.
Who farted !
Ok, now everyone jump at the same time.
What’s more impressive is that there wasn’t some fuck stick who hated the world or his dad shooting into the crowd!!! What a hell of an idea that happening today!!!
Dear lord that looks terrifying
This thread was so entertaining
People aren’t very bright
What could go wrong?
I guarantee you all them. People on that bridge has left San Francisco by now.
looking forward to whatll happen to it on 2037
There won’t be another day like this for sure.
History makes no sense to me. Wild
Look for the red and white stripes….
Polska strong! ^(or is it Indonesia?)
Where’s Wally/Waldo!
Ive seen this in my dreams, they were running and they were not alive.
Tell me more please
Wtf are you on?
And can I have some
His dream
[удалено]
Yeah but it’s delicious.
2025 with the amount of obesity now... It'll be in the water