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/sci/ - Science & Math


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File: 122 KB, 481x334, Hyatt_Kansas_City_Collapse.gif [View same] [iqdb] [saucenao] [google]
12058394 No.12058394 [Reply] [Original]

We had this a while ago and it was interesting so let's do it again. Let's have a thread dedicated to discussing engineering disasters and fuckups, notably historic ones that shaped the face of the engineering class itself.

>https://en.wikipedia.org/wiki/Hyatt_Regency_walkway_collapse

Link related. 2nd deadliest U.S structural collapse behind 9/11, all because of a last minute design revision that wasn't looked over properly. I'm not sure if that's blood visible on the floor.

>> No.12058404

I just leave it here

https://www.youtube.com/watch?v=NS_Nk6mx1Rk

>> No.12058610

inb4 challenger

>> No.12058868
File: 377 KB, 1920x1081, 1920px-Ponte_morandi_crollato.jpg [View same] [iqdb] [saucenao] [google]
12058868

Bridges.

Such a simple concept, but people always manage to fuck it up.

>> No.12059030

My uncle bought an expensive wall mounted TV but didn't bother to use a studfinder and it ripped out the drywall and shattered its screen.

Does that count?

>> No.12059067
File: 153 KB, 750x1000, Kaprun_train.jpg [View same] [iqdb] [saucenao] [google]
12059067

>>12058404
Cringe.

>>12058394
Any engineering failure?

>> No.12059133

>>12058394
you know why there are so many fails? cause retards are allowed to pass school with Cs and Bs

>> No.12059144
File: 52 KB, 1050x666, Pepcon.jpg [View same] [iqdb] [saucenao] [google]
12059144

>>12059133
>t. A+ pepcon scientist.

>> No.12059147

>>12059133
Professional licensing should weed those people out but sadly it doesn't.

>> No.12059151

>>12058868
>simple
Not at all

>> No.12059162

>>12059147
What makes you so sure that you wouldn't make mistakes?

>> No.12059165

>>12058394

It probably was blood. People had to have limbs cut off to get them out and corpses had to be chopped up to get other people out

>> No.12060210

>>12058868
The designer was a dumbass for designing something with so little redundancy, yet the fault is entirely on the company in charge of maintaining the bridge. That collapse has less to do with engineering and more with corporate greed and politics.

>> No.12060236

What's that building where the upper floors are wider than the ground floor but the architect fucked up so it's unstable and they just threw a tarp over it?

>> No.12060990
File: 687 KB, 1805x1200, Image-I35W_Collapse_-_Day_4_-_Operations_&_Scene_(95)_edit.jpg [View same] [iqdb] [saucenao] [google]
12060990

>https://en.wikipedia.org/wiki/I-35W_Mississippi_River_bridge

>> No.12061155

>>12058404
>t=8:34
itoddlers on suiwatch. oh wait lib arts majors don't watch this. itoddlers btfo.

>> No.12061170

>>12060210
The Morandi bridge's main issue was that it used concrete in tension and furthermore, via concrete-encased reinforcement strands that were impossible to inspect or maintain non-destructively.

Shitty corrupt pastanigger """maintenance""" was just the icing on the cake.

>> No.12061174

>>12059030
Absolutely, bronze level engineering can be just as interesting as the pro stuff

>> No.12061370
File: 180 KB, 746x845, The-collapse-of-the-Elevated-Hanshin-Expressway.jpg [View same] [iqdb] [saucenao] [google]
12061370

Collapsed portion of the elevated Hanshin Expressway in the aftermath of the Kobe Earthquake in Japan.

>>12061170
I remember watching a program on an expressway, in London I think, that had the same problem. They thought they were being smart by encasing the post tension cables with grout but ended up having loads of voids leading to the cables to corrode. They set up sensitive microphones all around the structure and could actually hear sounds of the strands breaking with some regularity. They ended up having to install additional post tension supports on the outside of the bridge to prevent collapse.

>> No.12061404
File: 2.45 MB, 1280x2125, sign design.png [View same] [iqdb] [saucenao] [google]
12061404

>>12059030
Something similar happened at the airport in Birmingham, Alabama a few years ago. One of the monitors that display flight information wasn't properly secured. It fell on waiting passengers, killing a ten year old boy and injuring his mother and two brothers. Like the KC Hyatt accident, it appears that design changes resulted in a unsafe implementation.

>> No.12061417

>>12059165
One dude got folded in half and ended up surviving. His head was resting on the back of his ankles and nearly drowned when water flooded into the lobby because somebody was being retarded.

>> No.12061563

>>12059133
Retards never come close to decide on anything in their whole worklife. It's the the A guys in Business Administration who are willing to turn things for the worse to get another bonus.

>> No.12062869
File: 194 KB, 640x427, Rana_Plaza.jpg [View same] [iqdb] [saucenao] [google]
12062869

>https://en.wikipedia.org/wiki/2013_Dhaka_garment_factory_collapse

Remember this shit the next time you go clothes shopping.

>> No.12062970

>>12062869
Holy fuck. Imagine being so stupid that you look at a massive tottering shitpile like that with cracks forming in its base and decide"the workers are being babies, its fine" so you can keep making handbags for gucci.

>> No.12062986

>>12061404
this incident honestly terrifies me more than any bhopal brap or beirut blast.

>> No.12064200
File: 74 KB, 986x555, 0D4C43A8-3731-478A-98CD-F70ECE6D4271.jpg [View same] [iqdb] [saucenao] [google]
12064200

https://nypost.com/2020/08/28/boeing-ceo-eyes-20-percent-increase-in-black-employees/

>> No.12064517
File: 531 KB, 1000x685, 1995년_6월_29일_삼풍백화점_붕괴_사고_4.jpg [View same] [iqdb] [saucenao] [google]
12064517

>>12062970

Asians seem to have a knack for Mr. Krabs tier kleptomaniacs.

>https://en.wikipedia.org/wiki/Sampoong_Department_Store_collapse

>> No.12064543
File: 27 KB, 600x400, Angry_german_kid_.jpg [View same] [iqdb] [saucenao] [google]
12064543

>static gif

>> No.12064557
File: 259 KB, 1359x740, jwst ahead of schedule.jpg [View same] [iqdb] [saucenao] [google]
12064557

JWST - originally designed in 1995 for launch in 2007 with a price tag of $500 million, it has now costed over $15 billion and probably will never launch, it'll just keep on being "delayed" until someone finally pulls the plug.

>> No.12064589

>>12064557
Ol' Musky should partnerupwith some astronerds to build a bigger telescope and launch it before them.

>> No.12064596

>>12064557
>w-we need more t-time and money. pls give us lots more m-money

What the fuck is going on with NASA?

>> No.12064703

>>12064589
Until he's doesn't need NASA contract work anymore, it doesn't benefit SpaceX to embarrass NASA over JWST.

>> No.12064839
File: 81 KB, 1024x768, JWST+Science+Planning+Timeline.jpg [View same] [iqdb] [saucenao] [google]
12064839

The JWST disaster might not have explosions or dead bodies to get people's attention, but that price tag is 3x as much as the WTC demolition.
Theres no punishment, no comeuppance or any penalty for the people responsible, they don't even publicly acknowledge that they've made a mistake or that they have any regrets over wasting vast fortunes of other people's money pursuing pie-in-the-sky fantasies for themselves. Instead they just keep on pumping out new fake launch schedules with a new delay every year while looking forward to collecting a fatass government pension

>> No.12065201

>>12059067
Imagine the roar of the blaze and screaming of fellow passengers as you're in the train to hell

>> No.12065497

>>12061563
Agreed to some extent. It's not the business administrators fault that the contractor offering the lowest price wins the job though. To make money the contractors need to save and innovate wherever they can, driving prices down but operating outside the known limitations until a disaster happens and more research is done.
>repeat ad infinitum

>> No.12065508
File: 73 KB, 1023x767, 0041700df981c05e72d29fcbc0e15b11.jpg [View same] [iqdb] [saucenao] [google]
12065508

The movie with Matt Damon and John Malkovich is quite nice though.
>even though it does not showtje gigantic bellies people in offshore operations have due to all the free food

>> No.12065658
File: 24 KB, 474x316, OIP.jpg [View same] [iqdb] [saucenao] [google]
12065658

>>12058394
Well there's this pos, but it doesn't end with engineering, there's also strategic and political shittery following it's path, not to mention the scandals and bribery.

>> No.12065675

>>12058868
wasn't the problem with this bridge the fact that it hadn't been maintained in a very long time? never heard about the design being flawed somehow

>> No.12065780
File: 123 KB, 705x428, F-35 fail.png [View same] [iqdb] [saucenao] [google]
12065780

>>12065658
Nah, it does exactly as it was designed to do: be a politically unkillable R&D and maintenance moneywell for Lockmart, with an airplane as an unfortunate side-product.

>> No.12065815

>>12064596
horrific levels of corruption, nepotism, and embezzlement
NASA is well and truly dead, its puppeted corpse only remains to be a vote farm for congressmen

>> No.12066344

>>12065780

Would the F-32 unironically have been a better choice?

>> No.12066406

>>12066344
fuck no

>> No.12066530
File: 103 KB, 720x380, US-Navy-joins-Japan-in-search-of-F-35A-fighter-jets-lost-in-the-Pacific-Ocean-feared-Russia-or-China-Find-it-First.jpg [View same] [iqdb] [saucenao] [google]
12066530

>>12066344
Everything would have been a much better choice. It's plain too expensive and the turnaround time is terrible. Like 50maint h/flight h, it's underachieving in basically every category and the only reason to get one is as a prestige object.
This thing would crush it's operating military in every large scale conflict with it's needs and is way too tricked out for your every day anti terror fuckery. Eric Prince (Founder of Blackwater) said it's junk that pmc would never even consider.
In short it's a government project & design by committee through and through along with everything that's bad about it.

On top of that it looks boring and ill proportioned.

>> No.12066544
File: 241 KB, 1200x836, df-st-83-09789.jpg [View same] [iqdb] [saucenao] [google]
12066544

>>12065780
A jolly unfortunate side-product.

Man I used to love these guys.

>> No.12066927

I have a discussion question. It was asked in the current issue of NSPE's magazine, and as an engineering student I wanted to hear everyone's thoughts about it. Question: Should engineering technology degrees be accepted for PE licensure?

>> No.12068918
File: 245 KB, 1600x1067, 1590434722162.jpg [View same] [iqdb] [saucenao] [google]
12068918

>>12065780
Pretty much everything in this picture has either been fixed already or is a general problem for all fighter aircraft. Several are complete misrepresentations of testing limitations.
>Melts weapons by keeping weapon bay doors closed for more than minutes
A few years ago it was discovered that a single inconsequential component of the internal weapons carriage system wasn't rated for high temperatures due to an oversight, so a temporary flight envelope restriction was put in place until that part could be certified which happened pretty quickly. No longer an issue.
>Can't reach full G-limit on a full tank
The F-35 was designed with a larger internal fuel tank than other fighter aircraft in order to reduce the need for external fuel tanks that would compromise the stealthy nature of the jet. Fighters of similar size and role will also experience a reduction in maximum G if they want to carry a similar amount of fuel as the F-35 is able to carry internally, as external drop tanks are mostly rated for 3-5Gs. Much like how legacy fighters can drop their tanks prior to entering combat to increase maneuverability, the F-35 (and every 4th gen fighter, to my knowledge) can dump excess fuel.
>Can't reach full G-limit because of its own design
Complete nonsense, not even sure what this means.

Not gonna respond to the rest because I'm lazy, but you get the idea. If you ever want to see a thread full of retards, just look for the F-35 in the catalog on /k/.

>> No.12068956
File: 89 KB, 600x300, 23crash600.1.jpg [View same] [iqdb] [saucenao] [google]
12068956

https://en.wikipedia.org/wiki/Lathen_train_collision

A maglev collided with a stationary maintenance train, causing it to dive underneath it (ripping off the roof, pic related).

>> No.12068967

https://en.wikipedia.org/wiki/Aral_Sea

>> No.12069280

>>12066544
i'd shit my pants just because of the BLS dumbfuckery

>> No.12069385
File: 44 KB, 602x258, main-qimg-ab73c16142c4028ece1845f488a3fb9c.jpg [View same] [iqdb] [saucenao] [google]
12069385

>>12068918
Awww, did somebody diss your planefu because it's shit?

>> No.12069459

Part1:
https://youtu.be/xYu0f57XAz0

Part 2:
https://youtu.be/okVbJR8rVWs

The problem was some shitty crane hook that was designed for a factor 10 too low

>> No.12069479

>>12058868
nobody should build houses under a bridge tho, it sucks aesthetically and if the bridge falls it's a mass murder.

>> No.12069554
File: 1.26 MB, 1600x1050, solar warden.png [View same] [iqdb] [saucenao] [google]
12069554

>>12064596
They're directing all those trillions to the Solar Warden program.

>> No.12069570

>>12069554
That thing looks like garbage and has a garbage name. Kinda like the Zumwalt. hmmmmmmm

>> No.12069615

>>12069385
Not him and not even American - but holy shit you're a faggot. 12 different countries are buying the F-35 including the Jews. It might be overpriced but it sure as fuck isn't a bad plane

>> No.12069811

>>12069615
You're right about that it isn't a bad plane, it's a nightmarish piece of shit and a liability and lockmart should be ashamed of about every aspect how they made it.

>> No.12069819

>>12065201
It was terrible according to a german /int/

>> No.12069903

>>12069385
>>12069811
You didn't rebut any of the examples I gave on why that picture is retarded.

>> No.12070202

>>12069903
because unlike you I'm not wasting my time pulling shit out of my ass. I'm not gonna spoonfeed to you why the F35 is a terrible piece of equipment because it's very obvious and doesn't need proof for special snowflakes like you.

>> No.12070268

>>12070202
>I'm not wasting my time pulling shit out of my ass
Fooled me

>> No.12070307

>>12066406

Why not?

>> No.12070342
File: 19 KB, 660x330, F32.jpg [View same] [iqdb] [saucenao] [google]
12070342

>>12070307
>Outdated lift system that would have gimped the A and C variants more than the F-35 lift fan.
>Wing design was a piece of shit that was impossible to mass produce, had to be completely redesigned and was unable to be tested during the JSF competition.
>Was never able to fly STOVL/VTOL and conventionally in the same sortie, unlike the X-35
Love the X-32 but it was hot garbage, intake design probably would have lead to a higher radar cross-section as well. The bigger issue with the JSF is the fact that the fly-off wasn't between Northrop and Lockheed, Boeing's design was retarded.

>> No.12070359

>>12069615
the us gov gives huge subsidies to israel to buy those f35. they are just indirect subsidies to the us defense contractors and israel gets the shitty planes for (((free)))
the case of other nations is slightly different: they buy them (((for protection))). those are offers you cannot refuse

>> No.12070373

>>12064200
The Boeing fiasco was caused by white male top Boeing executives who decided to cut down costs on safety you fucking dipshit.

>> No.12070384

>>12066927
If they can pass the exam, that's a good sign. Are these ET degrees accredited by ABET?

>> No.12070389

>>12070359
>Those are offers you cannot refuse.
>muh big bad US flexing their geopolitical power in order to encourage countries that need new fighters to buy the best one's available
boo hoo
Canada was a tier 3 partner and they backed out after already agreeing to participate in the program. Kikes indeed get handouts, but that's not specific to the F-35 and it doesn't reflect poorly on the capabilities of the jet.

>> No.12070456

>>12070384
Apparently there is an ABET accreditation for ET.

>> No.12070524

>>12070389
>>muh big bad US flexing their geopolitical power in order to encourage countries that need new fighters to buy the best one's available
big US collecting rent. flexing their geopol power to encourage countries that do not need a fighter to buy the literally last one

>> No.12070823
File: 112 KB, 1280x720, Estonia-ferry-1280x720.jpg [View same] [iqdb] [saucenao] [google]
12070823

This :(

>> No.12071085

>>12069615
has it ever occured to you that Israel isn't just going to overhaul the things once they get them and make them actually functional like they did with the Bradley?
this is Pentagon Wars all over again

>> No.12071890

>>12071085
Pentagon Wars is a bunch of bullshit. The Bradley is a fantastic IFV that absolutely shit on Soviet designed MBT in Iraq.

>> No.12071893

>>12070823
definitely NOTHING shady ever happened here, just purely an unfortunate accident

>> No.12071969

>>12071890
>IFV that came out in the "80s outskilled a Soviet MBT designed in the late '60s
What an astonishing result.

>> No.12071984

>>12071969
Yeah, actually.

>> No.12072004

>>12071969
>T-72M
>60s
Most of Iraq’s T-72s were from the late 70s and early 80s. Lion of Babylon was from the late 80s. Bradley design started in the early 70s, a gap of about 5 years.

>> No.12072050

>>12059147
professional licensing is experience + an ethics exam. how would that weed out ANYONE?

>> No.12072154

>>12072004
>a gap of about 5 years.
And a few billion dollars

>> No.12072156

>>12070389
Canada backed out because Trudeau made it a fucking campaign promise. F-35 is actually now back in contention as the government is holding yet another competition to replace its museum fleet.

>> No.12072208

>>12072156
Canada can't handle Denmark on its own, much less Russia. Not sure why they bother beyond keeping up appearances as they LARP as a real country.

>> No.12072233

>>12072154
And?

>> No.12072553

>>12064517

>Five hours before the collapse, the first of several loud bangs was heard emanating from the top floors, as the vibration of the air conditioning caused the cracks in the slabs to widen further. Amid customer complaints of vibration, the air conditioning was turned off, but the cracks in the floors had already grown to 10 cm wide. Around then, it was realized that collapse of the building was inevitable, and an emergency board meeting was held. The directors suggested to Lee that all customers should be evacuated, but Lee angrily refused to do so for fear of revenue losses. However, Lee himself left the building safely before the collapse occurred. He did not even inform his own daughter-in-law, Chu Kyung Young, who was one of the employees in the building, of the imminent danger. She became trapped in the rubble and was rescued only days later.

>No no, guys, capitalism is great! Communism and socialism is what kills people, not capitalism. And capitalists never steal from others, we earn our money fairly by working hard!
>What do you mean the largest source of theft in the USA is minimum wage theft and overtime theft?

>> No.12072770

>>12068956
...in...China maybe?

>> No.12073135
File: 55 KB, 600x601, 1443958346638.jpg [View same] [iqdb] [saucenao] [google]
12073135

12072553
>soulless bugmen represent all capitalism everywhere
no

>> No.12073616

>>12071893

What are you implying.

>> No.12073659

>>12064200
So they went from 5 to 6 now?

>> No.12073810

>>12072553

Why are you blaming abstract economic systems for a disaster when the man solely responsible for the collapse is clearly known and was imprisoned?

>> No.12073829

>>12069554
>Corey goode

For fuck's sakes, this is why UFO shit is so hard to get anyone to take seriously. Riddled with fraud.

>> No.12074390

>>12073810

Because this isn't a one off accident. Pretty much every major corporation runs on the exact same tactics -- with the only difference being that buildings aren't collapsing. Surely you don't actually think that the billionaires that run the world are wonderful people that legitimately earned their money, right...?

>> No.12074549

>>12074390

>Because this isn't a one off accident

Yes it is, because we are discussing it decades later. The vast majority of high rises do not collapse, outside of planned demolition.
Why do you need to lie?

>Pretty much every major corporation runs on the exact same tactics

Tactics of what? Losing tens of millions of dollars in revenue and going bankrupt due to lawsuits from personal incompetence of the CEO?

>> No.12074562

>>12074549
don't try to debate commies
their sickness prevents any human sanity from shining through

>> No.12075446

>>12069554

>cost: $24.3 billion

Kek. that's nowhere near enough to build this shit, even with reverse engineered ayy tech.

>> No.12076105

>>12075446
maybe if you're a government contractor, $24 billion is more than enough if you're competent

>> No.12076972
File: 2.18 MB, 2816x2112, Willow_Island_Memorial.jpg [View same] [iqdb] [saucenao] [google]
12076972

https://en.wikipedia.org/wiki/Willow_Island_disaster

This is what happens when you don't wait for concrete to cure.

>> No.12077400

>>12072004
The T-72M was a complete piece of crap sold as an export variant by the soviets.
No composite armor turret, only cast steel, thinner hull armor, no ERA, obsolete FCS, only came with the 3BM15 APFSDS from the early 70s which had very poor performances and were comparable to what the T-62s were provided.
While in the early 80s the soviets kept the muuuch better 3BM32 for themselves (540 mm penetration at 2km vs 300 for the 3BM15, a significant difference when facing NATO tanks)
Technically, the T-72M was worse than the T-62M, and was no match for ATGM equiped IFVs which could defeat them easily, thanks to the lack of passive protection against chemical projectiles.

On a technological standpoint, the T-72M was at least 10 years behind any US tank or IFV.

>> No.12077425

>>12077400
>The Iraqi T-72Ms used 3BM9 shells (removed from Soviet service in 1973),[93][94][95][96] with a penetration of 245 mm at a distance of up to 2,500 meters (8,200 ft)

Oh fuck no it's even worse than I thought, they didn't even get the 3BM15 lmao