Why Cranes Collapse

  • Am Vor Monat

    Practical EngineeringPractical Engineering

    Cranes are the backbone of construction projects. So why do so many of them fall down?
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    Because they are so pervasive and they do such a dangerous job of lifting massive objects high into the air, occasionally cranes fail. In this video, I want to walk through some of the reasons these failures occur, using historical events as case studies.

    Practical Engineering is a DE-film channel about infrastructure and the human-made world around us. It is hosted, written, and produced by Grady Hillhouse. We have new videos posted regularly, so please subscribe for updates. If you enjoyed the video, hit that ‘like’ button, give us a comment, or watch another of our videos!

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    This is not engineering advice. Everything here is for informational and entertainment purposes only. Contact an engineer licensed to practice in your area if you need professional advice or services. All non-licensed clips used for fair use commentary, criticism, and educational purposes.

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Practical Engineering
Practical Engineering

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Vor Monat
TritanicWolf
TritanicWolf

Where did you get the model cranes used in the videos?

Vor Tag
osearth esp
osearth esp

"Favourite thing to do" on date night? ??

Vor 7 Tage
Guerrilla Entrepreneur
Guerrilla Entrepreneur

The last segment is the reason your channel is where it is today the first seventh eighths all I hear is blah blah blah. You offer great insight and info in your videos keep them coming and I was just kidding from before, or am I?!?

Vor 14 Tage
traxxasman417
traxxasman417

You forgot to mention the big blue crane accident could have been prevented twice. So management forced someone to do the lift due to schedule delays.

Vor Monat
Jason Dashney
Jason Dashney

I'm so stoked you actually did go ahead with the crane videos. You told me that if you tackled cranes they would be a whole series and it's finally here. Down the street from my site was a collapse just a few days after I sent you photos of my tower crane, and that site also had an extreme event caused by a rigging failure. Cranes certainly can be dangerous. The torque you can see while on the tower under the operator is terrifying to me. I never got used to seeing the whole structure twist when the crane stops. Wind makes it ever worse.

Vor Monat
Luther Frank
Luther Frank

I thought about becoming a Crane operator at the harbour, on the account that I heard they get paid a decent salary (in my country atleast) ~NOT ANYMORE

Vor 3 Stunden
wwb
wwb

Never mentioned that most load charts have 2 distinct sections.... stability (tips before it breaks), and structural (breaks before it tips). Also, the Miller park failure was not caused by dynamic loading.... it was simply side load due to the wind. The Lampson Transi-Lift was notoriously unstable side-to-side. I have nearly 40 years as a crane designer, specializing in structures..... crawler mounted and truck mounted, both lattice boom and telescopic cantilever boom machines.

Vor 17 Stunden
Zech Vladvos
Zech Vladvos

I used to operate heavy equipment, mainly dozers and excavators I can remember while in career school we got to operate a crane, initially I thought this would be a breeze as someone who plays games frequently, but it was wild. Certainly wasn't as easy as I thought it would be, props go out to those who operate them for a living!

Vor 20 Stunden
TritanicWolf
TritanicWolf

Where did you get the model cranes used in the videos?

Vor Tag
Cam Kinder
Cam Kinder

Many crane failures are from “turning that key!” If you know, you know. Also it’s pretty easy for someone who isn’t careful to choose incorrect options when setting up the LMI so they think they have more capacity than they actually do.

Vor Tag
LEADSLINGER48
LEADSLINGER48

Im a Union construction worker. EVERY major incident i have seen is due to accelerated schedule. A thousand construction workers, working 60 to 70 hours a week with pressure from upper management to "get it done".

Vor Tag
Steen Pedersen
Steen Pedersen

6:32 There is usually a key to disable that security system, and the key is often in the lock at all times. The system allows you to only operate the crane to a safer state, when the key is turned you can make all the accidents. Even 30 years ago when I took my certificate in a 400t Liebherr the system was in use. The key must only be in the lock when the crane is set up or taken down.

Vor Tag
Minze
Minze

7:43 KRANPLÄTZE MÜSSEN VERDICHTET SEIN

Vor Tag
Wicklash
Wicklash

Not one accident was deathless unless I missed one. Just so sad.

Vor 2 Tage
Wicklash
Wicklash

Us Nova scotians know about the power of the wind to push over a crane. Look up halifax crane falling.

Vor 2 Tage
Mareczekw30
Mareczekw30

Grady: Honey we HAVE to buy this toy crane! Wife: But kids are too little to play with them Grady: But... ahhh... it's for youtube video! It's not a toy, it's aa... investment and for science... Wife: mmmhmmm ok... just don't buy too many of them

Vor 3 Tage
Mike Rodriguez
Mike Rodriguez

Unpopular opinion, but does anyone else find his voice distracting? He is clearly lowering his voice during most of the narration. His actual voice is heard scattered throughout his videos, but his "broadcast" voice is distracting at other times.

Vor 3 Tage
TheCanadianGamer
TheCanadianGamer

Gravity

Vor 3 Tage
rambo8wradio
rambo8wradio

Fun fact: Battersea Power Station (3:50) is in London, some may know it from the cover of Pink Floyd's album "Animals".

Vor 3 Tage
Roger Stalder
Roger Stalder

why dont just make them stronger. ^^ every other vehicle have safety double and 3times.. u can drill some holes and screw it down. but no... they just stay freely. no wonder they fail...

Vor 3 Tage
Roger Stalder
Roger Stalder

uhhh. i just remembre we did 1 time remove that savety stop. so we could take some Isolation over a farmhouse :) i just sayd im out lol walked 100m away and let them do that.. lucke nothign did happen. but it was like 50cm more with 250kg isolation... still.. dont do that lol

Vor 3 Tage
Jeff Lin
Jeff Lin

Beautiful family

Vor 4 Tage
Martin Smith
Martin Smith

Thanks!

Vor 4 Tage
Norlia Tiemeth
Norlia Tiemeth

note to self, stay the FUCK away from cranes.

Vor 4 Tage
Veronica R
Veronica R

I was a first year student at the law school located at the site of the 2016 crawler crane collapse in Manhattan. Honestly even before it collapsed, we would have to walk underneath the crane to cross the street and it NEVER felt safe, and always gave a bad feeling. When it actually collapsed I sadly wasn’t even surprised. Condolences to all the victims in these accidents, it’s a shame their safety and life and well being wasn’t considered until it was too late. Thank you for an informative video!

Vor 5 Tage
Arne Sahlen
Arne Sahlen

Miller Park collapse: no operator should work at 97% of capacity, wind or no wind. It takes about four brain cells to tag the risk as not acceptable. I hope the operator was charged with Negligent Homicide.

Vor 6 Tage
Arne Sahlen
Arne Sahlen

Sad😥 & infuriating😠: basics of balance we learn in school science - if not on child toys like cranes etc by Tonka. Yet unlearnt or ignored science floods the internet, and life in general, with disastrous effect.

Vor 6 Tage
RJ 1999
RJ 1999

You're making assumptions with the crane in Milwaukee, that didn't cause the failure,

Vor 6 Tage
Muhd Sufian
Muhd Sufian

The cause of the accident was simple: the crew assembling the crane didn't follow the manual. Specifically, they didn't attach that collar to the crane according to the manufacturer's guidelines while it was bolted together and attached to the building.

Vor 6 Tage
Miles Jenkins
Miles Jenkins

3:50 The factory on the cover of Pink Floyd Album “Animals”. Cool!

Vor 7 Tage
carl gangl
carl gangl

Dummies use them?

Vor 8 Tage
GT 43
GT 43

cranes fail because of mechanical issues, operator error, or load to heavy. just saved you 15 minutes. your welcome.

Vor 8 Tage
Martin Erkelens
Martin Erkelens

https://www.youtube.com/watch?v=8_nTLIuk6Hk (volume warning) Your analysis sir?

Vor 8 Tage
wwb
wwb

The load chart will state: "Crane is to be operated in a firm, level surface '. The barge was not stabilized.... as they swung the load, the CG shift caused the barge to tilt. After that, it was all downhill.

Vor 10 Stunden
Rick Owens
Rick Owens

I was hoping you would not use the word "accident" when referring to crane collapse. Even "preventable accident" is, I think, a misnomer. If it was preventable, it was not an accident. (No, that does not mean it was an 'intentional' ). Those aren't the only two choices. Impatience, omissions, incompetence, laziness, short-cuts, forgetfulness, are a few of the more appropriate words.

Vor 8 Tage
Sinvare
Sinvare

Just sub-contract crane operations out to another operator/company that is willing to operate the cranes to their limit. You can still get the profit of the construction without any liability. Worse comes to worse you'll get a tiny fine.

Vor 8 Tage
Hugh Stevenson
Hugh Stevenson

Most of the failure videos on the 'net are either: Too much moment and the (mobile) crane tips over or rigging failures due to slipping or overload. I'm just amazed that these still keep happening! I've seen some where the outriggers are lifting up and someone is standing on it to try to hold it down! People just push their luck so far! Other people standing under the load - man, you won't find me there. Thanks for a very informative video!

Vor 9 Tage
Kelsey Hann
Kelsey Hann

this was super interesting! a crane collapsed in my city a few months ago. would love to see a video on the kelowna crane collapse once there’s more info!

Vor 9 Tage
Martinit0
Martinit0

OK, so what do the crane experts here think about the craze going on at Boca Chica Starbase?

Vor 9 Tage
Younes BY
Younes BY

The worse and deadliest crane accident happened in Mecca in 2015, an unsecured crane collapsed due to the high wind, killing 111 people in the Greate Mosque of Mecca.

Vor 9 Tage
SunflowerArcher
SunflowerArcher

"Why Cranes collapse: They are overloaded and not maintained. The End."

Vor 9 Tage
Sir_Duckington
Sir_Duckington

What changes would need to be implemented in order to keep careless actors from entering this profession? Maybe requiring an Associates's degree after gaining a high school diploma would discourage lazy people from using this trade as a quick way to make cash?

Vor 10 Tage
Kvakerbill Duck
Kvakerbill Duck

Next in series will be about rigging and what can go wrong between hook and load. and in my head played between chair and keyboard.

Vor 10 Tage
Mihail Aleksiev
Mihail Aleksiev

You cook on microwave? Really?

Vor 11 Tage
QUANTUM DEGREASER
QUANTUM DEGREASER

From what I've read somewhere, the original crane operator at Miller Park in 1999 said the wind was too high to operate that day. He was fired and they brought in someone else who went ahead with it. I'll have to google it to see if that's true.

Vor 11 Tage
casanova419
casanova419

Lets be honest.He's great at explaining engineering but stinks at cooking.

Vor 12 Tage
soldier22881
soldier22881

Thanks!

Vor 12 Tage
Rahmat Merzai
Rahmat Merzai

Let’s not forget Mecca crane collapse where 111 people died and 394 injured.

Vor 12 Tage
CRUZ [CSGO]
CRUZ [CSGO]

KRANPLÄTZE MÜSSEN VERDICHTET SEIN! ICH GLAUB ICH KRIEG DIE KRISE!

Vor 12 Tage
Andrew Yellstrom
Andrew Yellstrom

My disappointment when I realized I didn’t click an AvE crane collapse video

Vor 12 Tage
Joe Jenkins
Joe Jenkins

As a crane operator you did a great job with this video in my opinion, and when you showed the photos of the computers in the cab those are really familiar because I used to run a grove GMK series and now I’m running a Tadano ATF series 👍

Vor 12 Tage
kjm 1955
kjm 1955

Accidents happen because of companies or employees taking short cuts and risks. All to often chargehands turn a blind eye so production is maintained or increased. When a accident or death happens its always the operator who gets disciplined by not following procedure.

Vor 13 Tage
alex:r.c
alex:r.c

so the answer as much things in this world is: stupid people. well im not sorprised

Vor 13 Tage
quartytypo
quartytypo

Cranes will tumble over but they will never break in two.

Vor 13 Tage
Mark A ZINKER
Mark A ZINKER

These are the most interesting videos on YouTube! Thanks for making them!

Vor 13 Tage
armstrong armstrong
armstrong armstrong

i oce tried to pick up a big bag of marbles with my tonka crane…i can relate

Vor 13 Tage
Ophidahlia
Ophidahlia

Hurricane Dorian in 2019 even blew over a crane up way up here here in Halifax, NS (it was only a tropical storm when it hit here). The winds were well below the max windspeed for the crane, but the cause of failure was determined to be failure on a defective weld exacerbated by corrosion near the base of the crane. Fortunately no one was hurt since everyone was at home for the storm.

Vor 13 Tage
Callsign: Fieters
Callsign: Fieters

Thats because "Kranplätze müssen verdichtet sein. Originale Nichtskönner!"

Vor 14 Tage
Alexander Thompson
Alexander Thompson

Great now I'm afraid of getting killed by a falling crane

Vor 14 Tage
Another Guy
Another Guy

Your not paid to read instructions or manuals while on the clock. Your supposed to read them on your own time.

Vor 14 Tage
Ngauruhoe zodiac
Ngauruhoe zodiac

I used to repair cranes and usually the reason for collapse was a rush for quick profit and not doing a proper job of making sure that it had secure ground to set up on.

Vor 14 Tage
Flying Squirrel
Flying Squirrel

The outriggers are not only bringing the tippingline closer to the load, they're also increasing the lever of the counter weights!

Vor 14 Tage
kilianhzh
kilianhzh

KRANPLÄTZE MÜSSEN VERDICHTET SEIN!!!!!!

Vor 14 Tage
ejonesss
ejonesss

overloading and high winds are 2 big causes of collapses

Vor 14 Tage
Rhys Hugill
Rhys Hugill

The Deme Orion crane incident is also an interesting event. A faulty hookblock caused massive amounts of damage to the entire crane structure and caused an expensive delay of the Vessel

Vor 14 Tage
Jup
Jup

Weil Kranplätze verdichtet sein müssen.

Vor 15 Tage
Srta.TacoMal
Srta.TacoMal

I hate that they died, but those are great statues.

Vor 15 Tage
Victor M.
Victor M.

Your videos are the only thing that can silence that know it all voice in my head…👍🏽👍🏽👍🏽👍🏽😁😁😁😁😁

Vor 15 Tage
Dean Kurowski
Dean Kurowski

Thank you for remembering Big Blue in Milwaukee. Wind factor was not ignored. Conccerns of the wind were brought up by unions and workers. But they were overruled by a deadline on the project that was already behind to be open for baseball season.

Vor 15 Tage
KUROSAKURA01
KUROSAKURA01

Statics class makes more sense now

Vor 15 Tage
Adam Wintetbottom
Adam Wintetbottom

Shave that head and you will look better.

Vor 15 Tage
Ívar Kristinsson
Ívar Kristinsson

This video was definitely just made so that he could buy those toy cranes and put it on business expenses.

Vor 15 Tage
Christopher Dudley
Christopher Dudley

I'm glad I've found your channel!

Vor 15 Tage
Andy Cutright
Andy Cutright

To some extent, I think you make these videos so you can buy neat toys :)

Vor 15 Tage
Qureshi siddig
Qureshi siddig

Beautifully presented

Vor 16 Tage
Accursed Satyr
Accursed Satyr

Gravity, the answer is gravity. LOL

Vor 16 Tage
BJ Jongejan
BJ Jongejan

"this was done to speed up disassembly" well that worked a little too well

Vor 16 Tage
ikmarchini
ikmarchini

What a beautiful boy! Auguri.

Vor 16 Tage
Tim Draughon
Tim Draughon

It's called a swing brake not really a clutch

Vor 16 Tage
Markus Strangl
Markus Strangl

When leaving a crane swivel mechanism unlocked to allow for weathervaning, the driver should consider the swing area. When we had the top floor and attic added to our house, the crane operator at the end of the day hoisted up a big compressor trailer to secure it from theft, as they often do, and left the swivel unlocked. In the night, a storm came up, made the crane weathervane around and swung that compressor into our neighbor's attic. Thankfully we already had a crane available to help with the repairs.. ;-)

Vor 16 Tage
無知な
無知な

Biggest crane failure ever was the Orion1 from DEME load test. Good thing they did a load test before actually using this machine, but from what I understood there was a hook failure somehow. where you can immediately hear the phone ringing that things are going wrong: https://www.youtube.com/watch?v=xYu0f57XAz0 Side view where you can see how big the vessel is and how it moved: https://www.youtube.com/watch?v=o1s79Uk10TA

Vor 16 Tage
Samuel Aditya
Samuel Aditya

why don't we make variable counterweight that automatically balances with the load by just slide the weight back and forth?

Vor 16 Tage
Big 'Un
Big 'Un

Can you please provide links to your crane models/toys??

Vor 17 Tage
ron black
ron black

the miller park crane collapse was due to the wind which caused the main pin of the crane to break.

Vor 17 Tage
Ronaye Tylor
Ronaye Tylor

Gotta be rich to afford that!

Vor 17 Tage
Time Flys in the Shop
Time Flys in the Shop

If you would like to see an impressive collection of cranes, look for pictures of the Shell Cracker plant in Beaver county Pennsylvania. It looked like a forest of cranes including one of the worlds biggest! It had shipping containers of ballast stacked on the back as counterweights! If I remember correctly, there was one crane on site that was knocked over in a storm.

Vor 17 Tage
Connar Comstock
Connar Comstock

"Cranes are dangerous" *Immediately thinks about the bird*

Vor 17 Tage
Rider Mak
Rider Mak

Not a crane guy here, so I have to ask about a scenario I can’t believe even exists. I think I’ve seen more than one video of a pair of cranes sharing one big load between them when they both fell over………into the water from the barge they were on. I just don’t understand how they thought that was a good idea.

Vor 17 Tage
Dean Lawson
Dean Lawson

Excellent video! Cranes are immensely complex.. and Dangerous!! I've been watching, with great interest, lately all of the goings-on with the Spaceport Construction in Boca Chica TX, and that place is literally bristling with Cranes everywhere! It was fascinating watching them hoist all of the sections of the immense 400' tall launch and integration tower and assemble it. After watching this excellent video, you get a better feel for all of the planning and careful rigging and preparation they have to go through when lifting all of the stuff to assemble their spacecraft, as well as the spaceport infrastructure.. Really excellent video, nicely done! Keep up the great work!!

Vor 17 Tage
Snowman Gaming
Snowman Gaming

just jumped in here to tell anyone not fully wanting to watch this video, like myself - Gravity, it's ALWAYS gravity, you can blame whatever other mechanical "slip-ups" you want, and at the end of it all, the reason it all comes crashing -> Down.. is Gravity, there you go, just saved you roughly 15 minutes of your time.

Vor 17 Tage
Aaron J
Aaron J

The Milwaukee Brewers stadium collapse comes to mind. Pure stupidity really.

Vor 17 Tage
pass iton
pass iton

There appears to be too much complacency an arrogance when operating / assembling or dismantling these lethal tower cranes. Resulting in so much tragedy!

Vor 17 Tage
moenchii
moenchii

In Germany we say: "Kranplätze müssen verdichtet sein!"

Vor 17 Tage
m1t2a1
m1t2a1

The crane collapse in Kelowna. AvE covered it and used some victims photos to show the cause. The victims were the disassembly team. Had enough time to post photos. Their social media accounts pictured themselves working in slippers. No hardhats. Not a harness in sight. What other rules were they breaking?

Vor 17 Tage
emaglott
emaglott

I love your forensic analysis videos. There have been several large explosions/fires at propane tank companies in the past 10 years. It would be interesting to get your take on how they got started and what happened. The difference between propane gas escaping and burning and a BLEVE.

Vor 17 Tage
Aaron Zhang
Aaron Zhang

Since this is so dangerous, why dont people operate these remotely?

Vor 17 Tage
sparky
sparky

CRANES ARE WEIGHT HANDLING EQUIPMENT NOT MATERIAL HANDLING EQUIPMENT THATS FORKLIFTS

Vor 17 Tage
Robert McGarry
Robert McGarry

We're going to need another Timmy!

Vor 17 Tage
Break of Dawn Offical
Break of Dawn Offical

Kranplätze müssen verdichtet sein

Vor 17 Tage
Robert McGarry
Robert McGarry

We can engineer cranes, make quantum computers, and write AI algorithms. But we can't include accountability and cooperation into our social human culture. This country is on a bed of dowels and it's beginning to sink.

Vor 17 Tage
Robin de Jongh
Robin de Jongh

Thanks Grady! Your demo of the soil particles for ground failure in particular was amazing.

Vor 17 Tage
Tom Rogers
Tom Rogers

I’m envious of those cool model cranes. No, I’m not 69, that’s a mistake on my birth certificate. I’m actually 14. (Ask my wife)! Subbed!

Vor 18 Tage
Emma Acquah
Emma Acquah

You always continue to amaze me with your loads of knowledge and professionalism. As a young civil engineer, I always learn something new and helpful each time. Keep up the good work sir 🙏 ( and your crew)

Vor 18 Tage
Tom Rogers
Tom Rogers

Definition: “Civil Engineer”. A professional who is extremely polite while laying your sewer and waterlines beneath a new bridge over the river.

Vor 18 Tage
Malcolm S
Malcolm S

3:52 I just noticed thats the power plant on the cover of Animals

Vor 19 Tage
Ryan Simmons
Ryan Simmons

I know this is a rare ask, and coop videos aren’t your thing, BUT…. I have a theory, based on past videos of yours… that @kentuckyballistics is wrong about the hot load in his gun. Video for reference: https://youtu.be/1449kJKxlMQ I don’t think it was solely an “extremely hot load” in the round he fired, that sheared off 4 threads on the cap… that it was repeated stresses that caused the threads to fail at a much lower force than is tested, due to the repeated use… Is there anyway you can analyze and confirm? I’m not smart enough to know the science… I’m just crossing streams and hoping my theory is wrong. Because if so… and I’m not saying it IS so…. But, if so… the gunsmith needs to recall, rework and reengineer his materials science to prevent this catastrophic failure from happening in the future. Please, and thank you for the consideration.

Vor 19 Tage

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