Well There‘s Your Problem - Episode 1: The Silver Bridge Disaster

Episode Date: November 13, 2019

So @AliceAvizandum and I (@donoteat1) are trying to do an engineering disasters podcast, but with slides, because like, engineering is visual. mothman (Slides located here: https://www.youtube.com/...watch?v=1TOS68qWHhw)

Transcript
Discussion (0)
Starting point is 00:00:00 I don't we don't even have a name for the podcast. No, we don't we don't it's it's deceiving a podcast Is this something that we're just doing for like your YouTube channel or I don't it doesn't matter I don't care probably does it probably doesn't matter at this point. It's just some content. Yeah. Yeah Welcome to content with the capital C All right everyone welcome to whatever it is we're doing where myself Justin and Alice Alice aphazandum. Yeah are here to talk to you about engineering disasters
Starting point is 00:00:35 Sort of like a podcast, but not really because there's a visual component to where I do a PowerPoint. So For the first episode of whatever the hell it says, we're gonna talk about I bars we're gonna talk about redundancy We're gonna talk about Mothman. We're gonna talk about redundancy Talk about the 1967 silver bridge disaster and Redundancy of course I'm looking forward to this one. I love a good bridge collapse and just to establish the dynamic early here You're the technical one. You know this stuff. I am the jokes idiot who has read the Wikipedia page
Starting point is 00:01:16 Five minutes before so I know it's a bridge and I know it didn't go so well Yeah, it's uh, it fell over unfortunately, which is what we're about to learn about that's the one thing you don't want a bridge to do some sometimes like You know, maybe if it's like a drawbridge, you know, it's all up and down sometimes. That's good. Hmm. That's the only time I can think of it though Okay, so the silver bridge disaster is the one they teach you at engineering school usually or it's a big part of the curriculum So anyway Let's talk a little about a little bit about
Starting point is 00:01:55 Iron bridge construction, right? Okay, so this is the iron bridge in Shropshire in England, right? Oh, yeah, that's the the first one they made out of Cast iron, right? Yes, and the thing is they didn't have any math To support what they were doing at the time, right not or or not certainly not what we would now conceive of right? And of course, there's no modern techniques. So all of these you just eyeball it. It's fine. Yeah, exactly It's like it's an it's an arch bridge. You can't fucking up that badly. Hmm, right? I mean you can but usually during construction once it's up. It's there Yeah, so we didn't we didn't have modern engineering techniques either. So all this iron work is held together essentially with carpentry joints
Starting point is 00:02:40 Is that good like well, it's still up you have a still where yeah exactly have the slides So yeah, this is fine. It can't be bad if it's still there. It's not that bad Yeah Alright, so but eventually we start, you know, we start getting into an era where we have math, right? So there's this German guy in the 1860s, right? And he wrote a book Hmm not not the German math. Yes. Yes, not not the German guy. We usually talk about in the sort of content we do this was Yeah, I'm looking at the slide here and it's just I see an a and what looks like an e are and I'm just like
Starting point is 00:03:23 Alright, so this was August Ritter. He was a German engineer. He wrote theory and calculation of iron bridges and roofs, right? Where we sort of get I'm not sure if it was from this book that we got classical trust theory Trying to avoid putting math on the screen. No one wants to see that, right? Yeah, you build the thing with the triangles and doesn't fall down like we've all played poly bridge or whatever So so the way the way this if if you're watching this and you went to engineering school this is where we get the theory or or the method of sections for calculating the stresses in
Starting point is 00:04:01 Individual members of a trust, right? And the reason we do it this way Is to simplify calculations, right? Because engineers are lazy Incidentally, if you if you are going to engineering school or have gone to engineering school and you're listening to this I'm so sorry. I don't know anything So That's what we're all here to fix though. All right, so The the important thing here is that every connection in the trust according to theory is a pin connection, right? And what is a pin connection a pin connection is there's three types of connections, right?
Starting point is 00:04:38 So you have a roller that's like a beam sitting on a log the reaction goes up Then there's a pin connection, which is like, you know, sort of a hinge So you have two forces and you need your fixed connection. That's like a stick stuck in the mud. So there's like Three reactions. There's you know x y forces plus it resists rotation so we assume everything's a pin for trust theory, right and Obviously, it doesn't have to be a pin connection for the theory to work If you made things fixed and joined together so they didn't rotate it might be a little stronger, right? Hmm, but you just balanced it on a log then it would be not strong at all, but very entertaining
Starting point is 00:05:22 No, actually a lot of bridges Basically one end is on a pin connection and the other ends on a roller to allow for expansion and contraction Huh, yes. Okay, so I have no intuition for this bridge ship. No, and it turns out if it's less connected Sometimes it's better. Okay, but here's here's the important part is Rather than build slightly stronger than what the theory might allow This thing called an ibar was developed which more closely matches the theory now this is this is a piece of metal, right and It's got a it's got a circle a bit on one end a circle a bit on the other end
Starting point is 00:06:03 There's a hole in it and you stick a cylinder in there, right? Hmm. It's it's the inanimate carbon rod, but yes Okay, so literally they They just did this because it made math easier. Yeah, I made the math easier Okay, sure and we We we still I mean we don't use them anymore today and by the way, this is an ibar Not to be confused with an ibeam Which is completely different
Starting point is 00:06:35 And if you're an engineer, you don't call it an ibeam you call it a w-section, you know just to make things more complex But you know so ibars aren't inherently bad, right? They were used pretty successfully in trust bridges like this is ibar trust in east falls in Philadelphia The you know, I use fairly frequently. Yeah, it's a nice looking bridge and it's still there Which which is the thing that you want. Yeah. Yes. Yes So But ibars were pretty quickly we decided all right well we can use these for more than just trust is we started applying them suspension bridges So like this is this is the Clifton bridge, which is built in 1864, right?
Starting point is 00:07:17 Yeah, we see how boy through now. Yes Mmm, and he like sort of had this megalomaniacal thing So it's seven times the size it needs to be to cover a tiny gorge awesome. Oh, yeah And of course one of the things Brunel was known for was redundancy, you know Hmm or redundancy was one of the things Brunel was known for It was redundancy. All right, so but all right, we can sort of see how the How these ibar chains, right? We don't have just one or two ibars We have a we have an ass load of them, right?
Starting point is 00:07:55 There's like 10 on each segment of the chain and then there's three chains, right in the huge too Like I was looking at the little cables running along the top of them thinking is that but I'm like no It's the jet you can't see the like the wood for the trees. Oh yeah And I assume these little cables here so you can hook yourself onto them so you can walk the chains and do the inspection But yeah, so we have you know, there's a lot of redundancy here if one single ibar fails It's not a big deal, right? I mean it is a big deal They would have to close the bridge and then replace the ibar almost immediately
Starting point is 00:08:33 But you know, it wouldn't like immediately cause the bridge to collapse Now Let's fast-forward a bit. We're going to 1928 in West Virginia wild and wonderful So having just got off of like bombing striking mine workers with that aircraft the government decides hey, let's build a bridge No, the government didn't decide that Private company did oh even better. That's like the mark of efficiency and quality. Yes So the Gallia County Ohio River bridge company decided they were going to build a toll bridge
Starting point is 00:09:13 At point pleasant across the Ohio River Right along where this red line is Right and you may notice there's not a bridge there anymore, which is the problem Yeah, it's sort of a very obvious failure mode. Although. I do see one that's like right next to it Is that the one they built after this one went all right? That is the railroad bridge, which was there before and was there afterwards as well Once again railroads like Beasing all comers in terms of making bridges that stay up because you have to do math. Yes train good
Starting point is 00:09:52 car bad train good car bad Yeah, that's that that's the policy proposal level that we're going for we had rent control and now we have train good car bad. Yes This is this is this is a simple policy proposal. I think even congressman can understand so This private corporation, right? They put out a bid for an engineering firm to come up with a design for a bridge that would go here, right? And they wanted a regular suspension bridge with you know cables like we have now now with chains chains were kind of old-fashioned by this point, right?
Starting point is 00:10:30 but uh a Firm called J. E. Griner company put out a bid which Undercut everyone else's bid by a huge margin, right? And they were gonna build a suspension bridge with I bar chains That were made out of a special high-strength steel right See the thinking here. Yeah, if if if we keep doing this, I'm pretty sure high-strength steel is going to be a theme All right, so Company those building the bridge was like, yeah, this sounds like a great fucking idea. Why not right?
Starting point is 00:11:07 So they they hire the American bridge company to put the thing up with steel high-strength steel from the u.s. Steel company Right. Yeah, what could go wrong? It's it's high strength. It's high strength. Yeah I mean, there's there's nothing there's nothing that can you know, it's it's more better Yeah, therefore and if the more best good number is higher up then that means that no bad can happen. Yes Yes Just as we learned from the Titanic The high-strength steel is good Okay, so they built this thing what why did they build it with I bars like is there a reason other than just it's cheaper?
Starting point is 00:11:50 It's private. It's a private company. It's cheaper. Hmm. Okay, cool. Yes I love that bit in Chernobyl where he indicts the whole Soviet system with oh, it's the same reason we do anything It's cheaper. I'm like, yeah, we would never do that here. My god. Hmm Right, so this is not a photo of the silver bridge This is a photo of the bridge that was just a river that was pretty much identical, right? Built by the same company to essentially the same design This was it was called the silver bridge because it had silver paint It's not, you know, actually like, you know, there's not like a location nearby. That's like silver or something. So
Starting point is 00:12:32 anyway if you think back to the Clifton bridge two slides ago, right, we had the What's it, you know, there was three sets of 10 I bars for each chain, right? Yeah, and these giant towers that had to be like really wide just to fit them all through, right? Yeah, that looks quite slender to me. This had two sets of I bars per chain and
Starting point is 00:12:59 You know only one chain on each side of the bridge, right, but they're made a high-strength steel though Yeah, so that's fine. That's fine. Yeah, obviously. Yeah This caused a couple problems though, which were kind of Compounded themselves over time right number one being is very difficult to inspect the chains because you know It's it's kind of hard to walk up the chains to take a look at them, right? Especially when they're that much thinner too, right? Yes That was the big problem I'm just saying if I had to pick between like walking up and harness on the like giant wide
Starting point is 00:13:41 I bars or these tiny ones. I know which one I'm picking. I Wouldn't walk up any suspension bridge cable. Yeah, that's scary Yeah, don't don't do that. Don't try this at home We really inspections No, you can't really you can't really walk up the chain at home unless you're unless you live in the suspension bridge Well, I mean we don't want to make any like assumptions about our views good and good point Yeah, we may have a might have a couple bridge trolls listening. Mm-hmm. Yes Right. So another part of this is designed, you know, 1928 is supposed to carry Ford Model T's and
Starting point is 00:14:21 Maybe nine-ton trucks, right? And it also used things called rocker towers, right? So rather than What's the word here rather than you know in a modern suspension bridge to Deal with expansion and contraction, right the cables can slide over the top of the towers slightly Yeah, that kind of like loose, right? They're like threaded through. Yeah, just a little bit. So Instead of doing this they did something else
Starting point is 00:14:55 Where if you look at the base of each tower you can see it's on hinges, right? Oh No, sir. Yeah, so This is fairly common in a lot of European Ibar suspension bridges actually not so common in the United States Making me feel just great about going over any bridges. It's just oh, yeah The tower that like holds all of this up and has all of the stresses on it. That's on a hinge Yeah, it's and so it's a folding bridge. It's more efficient. You can like collapse it and you keep it in a pocket Look, I think a pocket bridge would be very useful if I had to cross it out. Absolutely. Yeah, it's just like it's just like Minecraft
Starting point is 00:15:41 Mm-hmm. You just like snap it open like a like a like a switchblade or a bus a fly knife or something It's holding Thousands of tons of stone in my pocket. Mm-hmm. Yeah So these towers are able to rock back and forth by very small amounts in order to compensate for expansion and contraction from heat, right? And This worked fine for a while, right, but we're gonna fast forward from 1928 when it was built to 1967 So the cars are bigger the trucks are bigger the traffic jam giant
Starting point is 00:16:19 Got giant like Chevrolet isn't shit They've rooted 20 pounds structural wings on everything. Yes and They rooted us route 35 over the bridge So this is now a major like highway in the area and it's West Virginia So there's not a lot of interstate. So all the traffic is using this bridge Uh, so What was next so I just I have a I have a like a Republican view on this which is literally that
Starting point is 00:16:53 By rooting the the highway route 30 over it this is a classic case of big government overreach and If they had just like left the free markets alone, the bridge would have been fine Oh, that's the other thing is they the state of West Virginia bought the bridge from the private company in 1941 so cool Yeah, exactly. They had all they they had all made their money 30 years ago and gone away Hmm. Yeah, and no one was chasing them down after this and being like, you know, did you build this bridge shitty in 1928? Oh, we'll get to that. Hmm
Starting point is 00:17:32 So We'll go back to this i-bar diagram. This is i-bar number 330 right and there was a microscopic fracture in it when it was built in 1928 So No one could no one had technology at the time to you know find out find this fracture and take a look at it, right? So and that's that that's inherent in the manufacturing process too, right? Like nobody fucked up to make this happen pretty much, yeah so
Starting point is 00:18:04 During rush hour December 15th 1967 this i-bar failed right right along where you see these cracks here so What what happened what happened was? immediately The all the load from that one chain was shifted to the one good i-bar in that section of chain and It also snapped right but it was high strength How how could it do that if it was high strength steel?
Starting point is 00:18:36 Have it be high strength They didn't get the high enough strength steel Should have got like higher strength or like double high strength double plus high strength steel. Yeah They hadn't 1984 hadn't been written in so they wouldn't have known about that Yeah, okay So and this then you know So we now had a whole section of the K of the the chain which was no longer there, right? Which is bad for structural integrity
Starting point is 00:19:10 so What happened because of this, you know in an ordinary suspension bridge This is very very bad, right if you lose a cable right and you're probably gonna lose a section of the bridge Mm-hmm. This bridge has rocker towers though Yeah, you kind of see the problem here already. Yeah, so I mean bridge Yeah Yeah, we were watching the bridge fold in on itself during rush hour, right? Mm-hmm. So Crap I didn't okay. Yeah, here's a picture of the i-bar when they recovered it from the bottom of the river
Starting point is 00:19:51 So I didn't put any notes here, okay So yeah, one of the cable snaps the rocker tower rocks farther never has before Falls into the drink the other one follows suit Everyone falls in the Ohio River Not so good. There's not that there's anything like it wouldn't have made a difference, but The the towers being on hinges, right? How do you keep them within a? Like a range if a few degrees you just like rely on well It's never gonna be under that much stress or is there anything to like stop it
Starting point is 00:20:24 I am pretty sure there are there probably stoppers, but they're probably you know kind of Kind of they're they're not gonna they're not gonna do much under any significant load like it I'm not precisely sure how a rocker tower if there's like some limiter or not I'd think it'd be you know think kind of like a guide a mast or something like that like big radio transmitter tower I mean those are on hinges too and you know they stay up. Yeah Everything's more flexible than you think But if it had those just shared right through them Yeah
Starting point is 00:21:02 Okay, and so now the middle bit the span that we're all looking at here is that's under water Pretty much. Yeah with the towers on top of it, too. Yes Okay, awesome. Yeah, so uh, yeah, here's some of the aftermath Right at 5 p.m. On December 15th 1967 I would miss as recall there was a loud gunshot like noise and Folding like a deck of cards in less than 20 seconds the entire 1460 foot suspended portion of the silver bridge Collapsed into the river taking with the 32 vehicles and 46 victims
Starting point is 00:21:40 Intuding including to whose bodies were never found F. I mean F's in the chat because ouch I mean that's like You've got to figure that a lot of people like It would have been Terrible but still not as bad if the towers hadn't come down on top of the the collapsed span, right like Yeah, I mean Ohio. The Ohio isn't that deep. I don't think I might be wrong on that Well, you can see like there's a there's like a shallow barge in the slide there with the cranes on it and like that
Starting point is 00:22:19 Kind of draft means it's got to be a pretty shallow river But like obviously the drops gonna be bad and but like having a fucking like giant silver aluminum-painted Tower come down on top of your car Also, not a great day. Like I feel like that would really put a cap on a lot of the like Shit that you think you've been through in the seconds before that Also, you're in like a 1960s car, which yes You've already been impaled on the steering column by this point. It's fine. Yeah, and if you are if you are living then, you know
Starting point is 00:22:54 It's not like It's not like, you know, those doors are gonna open if there's even like a slight dent in the car. Yeah You're just getting like giant shards of like regular glass thrown at you And like big fucking white wall tires and shit the fuel tanks leaking. It's yeah, it's not ideal Somehow you set the river on fire Yeah So they inspected this bridge seven days earlier That inspection did not notice the tiny stress fracture under which was basically under the paint of the difficult to access
Starting point is 00:23:32 already I bar 330 right hmm, so like Even like this is the 60s, right? So obviously they don't have the technology if you did if you had that technology today Is there any way to like safely inspect that because you can't go up and like x-ray every eye bar, right? You can do ultrasonic testing I
Starting point is 00:23:56 I Think you would you probably would have to look at every single eye bar actually You know, I've got it. It might take a couple weeks, but you know, you'd be able to do I I'm not I'm not precisely sure how they do it on I bars today But I mean hopefully they have something because The inspection for this was literally just like a guy climbs up it and looks right. Yeah He probably doesn't even have safety equipment. He's probably just like, you know He's probably wearing like a nice like dress shirt and a tie and everything because it's like 1967
Starting point is 00:24:34 smoking also How could you not? Yeah, I mean you're up there the air is like that a little bit thinner So you get a better like a slightly better draw off your camel. It's great. Yeah, and he's basically walking a tight rope made of metal Made a high-strength steel. Excuse me. Yes So Anyway, the lesson here is of course redundancy and redundancy is the lesson, right? If we go back to The Clifton bridge, you know, if this had been built with many many many I bars as opposed to two
Starting point is 00:25:11 You know, if one of the if I bar 330 had failed Again, they would have shut down the bridge and replaced it, but it wouldn't have fallen down No, because you still have seven or whatever on that one side like It's not gonna Like overpower it, but you have to have like a sleeker aluminum bridge instead of this giant squat brick thing Yes So the victims
Starting point is 00:25:37 Went out and they sued US Steel. They sued American Bridge. They sued the state of West Virginia and In 1971 the National Transportation Safety Board You know, they acknowledged the design of the bridge was unsafe and made regular inspections very difficult or impossible But they assigned the blame to nobody Love when that happens my favorite regulatory agency And as you say if we keep doing these I expect to hear a lot more about the NTSB So, yes, the locals on the other hand assigned the blame to none other than mothman
Starting point is 00:26:19 Of course, right horse. They did I believe this implicitly now like You're the you're the engineer. I'm I'm the mothman truth. I think this was a rogue mothman And I say rogue because we don't want to tar or mothman with the same brush, but yeah actions of a rogue mothman Yes, so I'm just gonna have the Wikipedia article open for this one To talk about who is mouth mothman? So November 12th, 1966 that was Two months before the accident Five men who were digging a grave at a cemetery. Excuse me. That was about a year before
Starting point is 00:27:01 I'm not sure But they were out doing something tremendously normal. Yes, they were they were digging a grave at a cemetery near Clinton in West Virginia and they said they saw a man-like figure fly low from the trees over their heads, right? Yeah, which is a mothman because first owners haven't been invented yet. So it has to be some kind of cryptid What is it shortly thereafter November 15th 1966 two young couples from Point Pleasant Roger and Linda Scarberry and Steve and Mary Millette told police they saw a large gray creature whose eyes glowed red When the car's headlights picked it up
Starting point is 00:27:44 They described it as a large flying man with 10-foot wings Following their car while they were driving in an area outside of town known as the TNT area Why Why is it known as that the site of a former world war two munitions plant? I see. Okay. West Virginia wild and wonderful Hmm. So the government made mothman is what I'm getting from this and then in revenge for his warped existence He knocked down their bridge I guess so. Yeah, I mean mothman made entirely out of TNT. I mean, he's the he's the original Minecraft creeper
Starting point is 00:28:25 Yeah, I I think the the way to study this for the future is that The engineering redundancy is important only to the extent that it failed to mitigate the damage from the rogue mothman I was about to say. Yeah, I mean if they had if they had only built The bridge out of obsidian blocks as opposed to high strength steel exactly Then it would be fine. You would have he would have like Crumbled a few things and they would have gone straight down into the the water and the sand and everything But it would have been fine. Yes those folks have been wearing diamond armor
Starting point is 00:29:01 this uh, this whole this whole incident could have been avoided Yeah So the mothman is that that's Well, I mean point pleasant was at one end of this bridge, right? So that's definitely like that's Right there and like a year before so It does make sense as like a folk understanding of
Starting point is 00:29:27 A horrific tragedy that just killed what like two dozen people um so Yeah, I I don't know this is like I I I have nothing I don't know what to say about about mothman I'd say I don't know. I mean he collapsed a bridge. He seems like a pretty bad dude Yeah, I don't like I don't like mothman I think we have to say that whatever this content is whatever we're calling it. Whatever brand we have to come up with
Starting point is 00:29:57 We are a pro mothman podcast stroke slideshow And we don't want to anger him or disrespect him in any way. Oh, that's a good point. Yeah, I don't know Well, I'm in pennsylvania. That's like a gents adjacent to west virginia. So I probably got to worry about the mothman more than you do Yeah, absolutely. Although we don't know how far he can travel. So Really, it's it's anyone's guess. I have friends in west virginia. They better watch out for mothman All right, so never mind mothman good Unfortunately took out a bridge. Maybe maybe he was angered by the bridge. I don't know. Yeah, maybe the bridge provoked him uh
Starting point is 00:30:39 Note, however that he did not take out the railway bridge, which is um as the podcasters like to say praxis Mothman pro train. All right. Okay. I like mothman now So, okay, so The silver bridges never rebuilt right they never rebuild it on the site. They do build the silver memorial bridge downstream though The silver memorial bridge really is a name that inspires confidence like it's that's such a simpson's sign gag of just sort of putting a a little Like marker on the the sign for the old bridge with a memorial inserted
Starting point is 00:31:23 That's a load bearing memorial Yeah, it's it's it's the old bridge, but it just has like a wreath on it Yeah So, uh, that that carries us 35 to this day and you know, it's a cantilever bridge kind of boring. Um, and then Is it even silver? I can't see it from the the photo. Well, you know, I'm not sure I only saw one photo of it Typical like if it was if that's false advertising like I say go back and sue west virginia I think it's more of a gray bridge Typical
Starting point is 00:32:07 And then uh, the last slide I got here is uh, every other bridge of this kind In the world of which there were three was torn down Except this one in brazil Uh, this is the very very functioning country, especially at the moment Yes, this is the Hercilio Luz bridge in Florianopolis In in santa catarina in brazil. It's very similar design, but much larger Designed by david b steinman who was a guy who didn't suck at bridge building as much as the company mentioned before
Starting point is 00:32:46 Yeah, but evidently because it's still there Still there. Yeah, I I noticed those supports in the middle of the span which um, the silver bridge did not have well with those In the original design on you those are temporary supports because what they're doing right now, uh, you know 60 years after the original silver bridge disasters. They finally decided. Hmm. We should probably do some reinforcements on this So they're adding a few more eye bars to the chains Ah, okay excellent in in year of our lord 2019 Yeah, you you love to see it. I mean like I I do
Starting point is 00:33:27 wonder if people are gonna be like uh No, this is terrible because it's gonna compromise the like slender newest and like old aesthetics of our bridge Uh, and just make it utilitarian and brutalist and boring I don't know. I think they'll probably like it because they'll be able to use the bridge again because it's been closed since 1990 uh That's that was that at least was wise of them like closing the bridge and just making it like a giant sort of paper weight Yeah, well, you can see all the same design features even got rocker towers
Starting point is 00:33:59 Hmm. Well, I mean I I feel great about it. I'm booking tickets right now. I'm gonna go and I'm gonna drive over it in a giant truck um Yeah, no, this this is fine. It's fine. Yes. Watch out for Bolsonaro. Yeah There's that that is the two kinds of danger in the world is mothman Bolsonaro. Yes Uh I don't know is mothman is mothman well Bolsonaro hasn't collapsed a bridge yet. That's true. Yeah Hmm, I don't know. Maybe we could set mothman against Bolsonaro somehow Well, we just have a cage match
Starting point is 00:34:42 Yeah, yeah, exactly mothman like comes up behind bolsner and hits him with the folding chair My god, is that mothman's music? Okay, well fingers crossed we're not going to be looking at the um, elcilio, uh lose memorial bridge this time next year That's uh, that's a load bearing memorial. Yeah This is a load bearing wreath Just a really thick steel wreath Well, I mean when you think about it, that's uh, that's what's at the end of every ibar That's true. Yeah, it makes you think
Starting point is 00:35:24 Okay, so what have we learned from all this other than do redundancy and do redundancy and high strength steel is a scam Um, I would say those are the main lessons uh, you know redundancy is important because Uh, you need to have stuff be able to fail to a certain extent where you can visually see something is wrong before like, uh Everything just falls down catastrophically. It has to be a mood. It has to be a big mood Someone has to be able to look at it and say same Yes Yeah, when the when the inspector comes and looks at the cable and says, hmm big mood. That's yeah, that's when you know
Starting point is 00:36:09 Yeah That's when you know you got to fix something That's it though you have we have like room for failures and redundancy and use more steel rather than Better with air quotes steel And hopefully your bridge doesn't fall into the higher river and kill 2000 people better steel is worse Yeah, yeah use use more things Quantity has a quality all its own the soviet's got it right just Yeah simplify and add weight
Starting point is 00:36:46 But this is why the soviet's bridges were so good was because they were designed to a quota by weight So you have a 20 000 ton Like bridge over a stream. There's just a giant cube of metal in the middle of the stream You just drive over the top. It's like perfectly smooth. Yeah fantastic He's good bridge. Yes. He's good bridge. Not so good for water flow, but very good for drive train That's fine. You put a fish tube over it's fine That's the worst solution to any problem I've heard of what the fish tube the fish tube Like oh, we're gonna build a bridge, but it blocks the water flow. So we're gonna build rocks on either side
Starting point is 00:37:28 Yeah, and build a bridge for the boats to go across over the bridge Yeah, but we did get like a day and a half of of content out of it And what more can you ask for from a civil engineering product than that? Yes All right, so that was the silver bridge disaster um I I don't know. I don't know. Is there any anything else we got to say? I don't think so. I think this is like a good kind of Way to launch whatever it is. We're calling this we will think of a name between yes next one
Starting point is 00:38:05 um, and it's going to be about like engineering things that go terribly wrong and sometimes they're gonna Get a lot of people like this did sometimes they're not either way the promise you get from me is that I'm going to be grotesquely blase about it um And yeah, we're gonna explain why things go awful Yeah, we're gonna we're gonna talk about all the things going wrong. Um, I guess uh, Alice, do you have anything to pitch before you go? um Listen to my other podcast trash future available wherever podcasts are sold That's really it
Starting point is 00:38:41 All right, uh I'm gonna say if you're in the southeast pennsylvania area um, the united auto workers are on strike Uh, and oh, yeah, that's important. We're having some uh, we're having some, you know Some of our organizers are getting folks out to uh, go support the picketers because it's really small plan They're doing 24 hour picketing. So, you know, if you want to help cover some shifts uh dme Or dm
Starting point is 00:39:11 At little underscore yenta Uh for details on that there's a big rally that we're holding on the picket line on saturday the What is that the 28th? And also other than that watch my youtube channel Uh, I don't know if this will be on my youtube channel or not I think so, but like we'll figure it out and figure that out always respect mothman. Yes Respect mothman or we'll come and tear down a bridge near you
Starting point is 00:39:45 You might be on it. That would not be good Yeah, thanks for watching guys All right, bye

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