Stadium Roof Falls in Kansas City - Massive Engineering Mistakes

Stadium Roof Falls in Kansas City - Massive Engineering Mistakes - Engineering Documentary

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Күн бұрын

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@Ledzepnut 4 ай бұрын

I remember when that happened, I lived about a mile away at 624 Central Ave in Kansas City KS. It was a used appliance store called Eastwood Appliance, i was the best friend of the owners son, Dean, and I was like a brother and son to the family. There was a large 2 story apartment in the back of the building which me and my wife, in whom I had just gotten married to, lived in one of the many bedrooms. I worked at a crystal grinding shop, which I believe was called Accurate Crystals, at 17th and Central, in which I ground crystals to a certain thickness/frequency for radios. I had to walk to work every weekday, which was about a mile and a half, until I bought a purple '66 Chevy Supersport for 125 bucks, but the floor was rusted out. You coulld actually see the pavement as you drove it, it was like a Flintstone car. I remember standing on the roof of the building, I don't remember why, we used to hang out on the roof all the time. I heard a far away rumble to the North and saw this huge anvil-shaped storm in which I thought was going to hit Parkville, Gladstone and North Kansas City, which I even said to the people that were up there with me, until I noticed it was moving almost directly South, which wasn't normal, and was coming at us. It looked bad, and as soon as the cloud got directly above us, the wind started blowing and intensified with every second, as the rain began pouring down sideways. It was scary, and we all ran into the building. One of the younger children, Ronnie, was missing and couldn't be found in the house, so we went outside in the weather to look for him. The color outdoors was this eerie green, it was scary as can be with the rain pounding and the wind howling. There was building debris all over the streets that was blowing around. It was difficult to stand and hurt getting pelted by the rain. It was one of the scariest days I can remember, and Ronnie was found in the basement or somewhere, I don't actually remember. That was the day Kemper Arena caved in. I need to get my butt to work, still driving my floorless purple chevy to the crystal factory ... just joking :)

@oubrioko 4 ай бұрын

Fully remember those eerie colored horrifically shaped clouds advancing from the north, and the associated high winds that day. My Little League team had spent the afternoon at the *Cool Crest* batting cages on U.S. Highway 40 in Independence. We all piled into the coach's station wagon and headed home as the ominous looking front approached. The coach drove quickly, hoping to stay ahead of the storm, but the coach wasn't driving fast enough for me. I was like, "Come on! Put the pedal to the metal/heel to the steel!" One of my teammates lived across the street from me. When we arrived, the coach stopped the car in the middle of the street. My neighboring teammate exited the backseat from his side of the car, while I did the same on from the opposite door on my side, and we each ran frantically toward our respective homes. I was so scared that the coach had to yell, "Hey, could you get the door?!?. Frustrated, I ran back to the car, slammed the car door shut, and then raced for my porch. An hour later, breaking news came of a massive roof collapse at *Kemper Arena.* Will never forget that storm. What a day!

@Ledzepnut 4 ай бұрын

@@oubrioko Yes it was a scary day, I've probably forgotten parts of it, but I certainly can't forget most of what happened, it's ingrained into my 64 year old head :)

@koryu9924 7 ай бұрын

Grady from Practical Engineering spotted!

@ACME_Kinetics 7 ай бұрын

21:03 looks more like the #8 cable from left to right of center gave way from the top followed by #5, then the cascading failures began. I'm assuming the investigators had better resolution and more data to work with, but from what I can see I hope they looked into the upper cable mounting.

@ElizabethMayo-sf4wg 4 ай бұрын

I love this type of video. Thank you for making it.

@videomediamtl997 7 ай бұрын

‘traffic continues «safely»´, but @44:08 the new structure’s rebar rusted and the concrete is experiencing delamination !

@johnhanson1st 3 ай бұрын

A single arch bridge with minimal cables is a bad design, but they wanted something that looked good. Build structures with redundancies, to hell with looks.

@aaronjaben7913 5 ай бұрын

Those poor people in that truck that almost made it across the bridge before it collapsed! Can you imagine what that must have been like??

@Bbjon816 4 ай бұрын

Loved kemper area. Wish it was still able to hold concerts

@blablablugh 7 ай бұрын

Know this place well, having seen many events at Kemper. For a truly catastrophic event, also in KC, see the Hyatt Hotel bridge collapse. Something about the architects, budgets, management in KC during the 70s...just not synced

@GaotamGambhir 4 ай бұрын

Kemper is hyvee arena now. I'm sure you knew that haha

@ChaplainDaveSparks 6 ай бұрын

Regarding that train derailment, perhaps they need a common *EMERGENCY* radio frequency in addition to the one they use to communicate with their dispatchers, similar to *121.5 mHz,* which airliners are required to monitor.

@annmariecollins819 4 ай бұрын

I used to cheer and when there was cheer comps, wrestling and basket ball the whole floor would shake the entire building

@DeanDecoursey 4 ай бұрын

I would second the comment about engineers and architects in Kansas City either being sub par or extremely unlucky, with both Kemper Arena and the Hyatt disaster being on their conscience. At least there were no injuries associated with the roof collapse inside Kemper. After the Hyatt disaster, engineering and architectural firms couldn’t either close down or declare bankruptcy quick enough, with the amount of the judgment s against them. I was a Kings season ticket holder for 9 years. When the roof collapsed, the 30 year lease that the city had with the Kings ended. The local ownership sold the team to a Sacramento group who said that they had no intention to move the team which they did 3 years later. After the Kings left, I never sat foot inside Kemper Arena again. Too many bad memories.

@Flyingsidekickr 3 ай бұрын

Why don't they take down the purple streetlights though if they are really different? It is like insurance?

@brettjones8541 4 ай бұрын

30:28 They are now in the process of turning this old RR bridge into a restaurant and other attractions. First of its kind around here…

@annetteolson2428 4 ай бұрын

I live in the KC area, and forgotten about the Kemper roof collapse. We quickly recovered, and now enjoy the larger stadium.

@danielflores7724 4 ай бұрын

Went to many concerts at Kemper arena amazing the roof didn't cave on all of us there , was in 1978 and 79 ,,,i was 18 yrs old then. Seen the Who there in 1975

@eliasthienpont6330 7 ай бұрын

🦁🦁🦁🦁🦁 THE LION WAS HERE 🦁🦁🦁🦁🦁 No. 412

@robertnagel337 6 ай бұрын

Did they not think it might be a lot cheaper to dig a retention pond to hold the rain water and not use a very expensive roof assembly?

@Flyingsidekickr 3 ай бұрын

Well someone put purple streetlights around it anyway that target water judging from their positions...oops See Hunting for purple streetlights in Kansas City video 313

@calikid3336 7 ай бұрын

That stadium: the after analysis made it look like one basketball player could jump up, grab the hoop and pull the whole roof down.

@DeanDecoursey 4 ай бұрын

That actually happened at Municipal Auditorium, where the Kings played while Kemper was being repaired. Actually, Darryl Dawkins just pulled the rim down, which shattered the backboard

@OverLookTV24 4 ай бұрын

Kc is a wild place. Ijs

@Pulse992 7 ай бұрын

Beside the obvious stadium-roof collapse not starting till 23 minutes into the video, the analysis of the of the reason for the Taiwan bridge collapse seem questionable to me...if the failure started with salt water collecting in the anchor buckets, how is it that the video shows the cables holding at the anchor points and breaking at the top of the bridge arch, while still holding at the bottom? If the failure started at the bottom, we should expect to see cables left hanging from the arch after the roadbed started to fall. Instead, we see the roadbed pulling on and snapping the cables at the top of the structure. Somebody doesn't want people to know what really happened.

@ACME_Kinetics 7 ай бұрын

Just posted a comment with the same general analysis, although with maybe less shade. You're looking at #8 from camera left to right, right?

@wyattroncin941 7 ай бұрын

The Majority of the tendons broke at the bottom, reflecting the investigation findings. The tendons which separated at the top could simply be from the top connections of those tendons being faster corroded than the bottom in those locations, or a result of shock from the bridge arch rebounding upwards after losing most of it's load. Or, as is the case in reality, shit is messy and never follows a model 100%

@kentijohnson1522 7 ай бұрын

⁠⁠@@ACME_Kinetics I have never understood what’s meat by directionals such as “camera left”. If we count the cables in order of the truck’s direction of travel in the video the first one to break appears to be either the 5th or 4th cable. Since viewing this video, I search of other video of the event. This one seems to be an excerpt of video made by the Taiwanese Coast Guard, who have video monitoring for security purposes. I am assuming the investigators had the raw footage and would have need better able to determine what happened. However, it does look to me like the cables were still attached at the bottom when the bridge fell. It is possible the bottom were corroded, and broke when the bridge hit bottom, either from direct impact, or from the stress of the weight of the cables being twisted as they came to rest after the fall. But it looks to me like the finding obscures the possibility that the original cable design wasn’t strong enough from its inception, or wasn’t effectively connected at the top of the structure. I also think it was a disaster waiting to happen, because the arch was anchored to the roadbed without any independent means of support. So if the roadbed moved, it would put a lot of stress on the arch, much like the movement of the string puts stress on a bow in archery. If that happened, it would pull on the suspension cables-the would need to get longer when the bow beings, or snap if they were not sufficiently strong, even without salt water erosion. The typhoon and earthquake gave the bridge quite a stress test before the tanker came along. That snap is what I believe happened in this case. After the typhoon and earthquake had pulled on the proverbial bow string, the cables moorings at the top were stressed…the truck was the last straw. This will happen again if they don’t take that into account.

@ACME_Kinetics 7 ай бұрын

@@kentijohnson1522 Camera (more often called audience) left just means (in this case) the view we're seeing from the video camera that recorded this. Stage left would be the opposite, or in this case if you were standing on the bridge looking at the audience/camera. I think you have it pretty much right, although since I believe the investigation to be incorrect based on this video, I can't be sure. I'm sure the general design idea would've been fine if it were specified and then constructed correctly, as it's a relatively short and narrow span. Although lateral stress would put equal stress on the roadbed, which IMO should have been less strong than the arch itself - cracking the roadbed wouldn't put the entire structure into the water.

@ACME_Kinetics 7 ай бұрын

@@wyattroncin941 The majority didn't initiate the start of the cascading failure - the first failure did.

@Godsrocker1970 5 ай бұрын

Why in the world would a program seen internationally use only metric and not include standard. I have no clue the size of metric. Sucks I have to pause and do a conversion

@DJResR420 4 ай бұрын

Because most countries use metric, not imperial relic._

@RockFish-uv9vs 3 ай бұрын

You fix one thing , another comes up, and you can't stop ALL failers.....just nit as meany....

@TheRoguelement 4 ай бұрын

This accident was a direct result of lobbying for rail deregulation against better judgement the Rail carrier wanting less & less crew men on board long freight trains . WELL this is a direct result of that thinking .it's not enough they are earning hyper profits they want MORE .. Drunk with greed they want more more more ..

@DJResR420 4 ай бұрын

That stadium lighting looks like in a farm already._

@jeffrenman4146 Ай бұрын

Well the award that was given for that exoskeleton roof on the stadium… I think they can reject it and take it back. Ends up it was the worst design ever lucky and never killed anyone that would've been practically flat out murder it was built so poorly. I'm glad nobody was underneath

@hammerdragon4321 3 ай бұрын

here in America we don't use KLM we MILES so how many miles from town was it

@MelissaWickersham-k4o 2 ай бұрын

Google it. Use a kilometer to mile converter. Or do the math to convert the units of measurement yourself.

@nomanomen4611 7 ай бұрын

😂 bei der Brücke echt jetzt eine v Formlinge Verankerung da haben aber schon ein paar duzend Planer geschlafen 💤 das war quasi katastrophe mit Ansage

@mickeyscace1550 6 ай бұрын

But the cables failed at the top you can see it in the slow motion picture not at the bottom

@aaronjaben7913 5 ай бұрын

I noticed that too. Some failed at the bottom. Maybe the first ones gave way at the bottom causing the others to fail.

@chuckHart70 4 ай бұрын

1970s? Kc had had a skyline since the 1940s.

@IllutianKade 6 ай бұрын

At some point...maybe humanity will learn to not use steel in salty environments. "bUt StAInLesS StEEL iS eXPensIVE!" So. It's okay to accept a Minimum Viable Product (MVP) when it's a toaster. Not when it's a fucking bridge.

@Flyingsidekickr 3 ай бұрын

Hmmm...I knew nothing about this history when making this and the other videos before this showing what I expect with the LED panels BTW (also see videos 265A, 277, et. al ["Hunting for purple streetlights in Kansas City video 265 Exhibit A" for example]): kzbin.info/www/bejne/pHrFk62gi8SKhsU