Bridge Girder SLJ900
By - Lord_spaceslick
I'd like to see the whole bridge built in time lapse like this.
Including the 2000 hours of engineers staring at a computer screen?
And the political board meetings approving the project.
What about when Jeff from accounting refuses to approve the order of the new pairs of gloves and they have to request them from another construction site?
These are the parts you just can’t miss.
tldr: never trust the french with building reactors
Building of new nukes should be applauded. The most environmentally friendly base source we have by far
Would be, but they have to be built right, and politics and economics constantly conspire to make them unsafe.
So, they are unsafe.
Nukes can be safe or they can be cheap.
Renewables are safe and cheap now.
Tell that to the three new coal plants that replaced Indian Point.
Renewables may be both safe and cheap*, but they are not effective. See the news in the last week about Britain's energy woes. Short version: poor wind and sun for several weeks has meant very high demand for gas for electricity, causing supply/demand issues with knock on effects risking shortages in other industries which also need natural gas, right up to food supply.
*Edit to clarify: wind turbines and solar panels themselves are relatively cheap; the complete system with everything to back them up, is not.
They're also not particularly environmentally friendly. The notion that they're a low-carbon option is [questionable](https://theecologist.org/2015/feb/05/false-solution-nuclear-power-not-low-carbon), and even that comes amortized over a multi-decade lifespan with associated long-term price guarantees.
Power companies have been lobbying hard for nuclear for years now, and it's not hard to see why.
Wait a minute, Areva... a French nuclear engineering company.
Are they the same guys that were contracted to build the [Chinese Taishan nuclear power plant that had a fuel melt and radiation release](https://www.bbc.com/news/world-asia-china-57474384)?
It was the only nuclear reactor plant to have been built and finished roughly on time by any French engineering company within recent years.
On the other hand, a fuel melt is "level 3" in terms of nuclear disasters, third only to a full containment breach (Chernobyl, Fukushima) and radiation release, which also happened.
Normally, at least here in the backwards and bureaucratic states of america, there would be a fuck ton of regulations, meetings, and long seemingly unnecessary steps / song and dance shows to operate a reactor. Sure, they slow everything down and make operating a nuclear power plant near unprofitable but there has not been a "major" nuclear incident such as a reactor fuel melt or radiation release in decades.
Not to say the USA isnt perfect in operations, you can see the shit reactor operators are doing on an [annual basis here](https://www.nrc.gov/about-nrc/regulatory/enforcement/current/reactor-actions/2020.html) but at least it's public and no reactor melts have occurred since Three Mile Island.
ELI5: The Chinese fucked up somewhere in their new reactor. Either though failure to verfy construction integrity (cutting corners) or bad / inexperienced operators that allowed a clearly flawed French company to complete their reactor on time.
Three years later with their brand spanking new reactor, they had a critical reactor failure, a fuel melt, due to what seems like displacement of coolant fluid by reactor off-gasses. The Chinese claim it's noble inert gas buildup but I call bullshit. This is such a basic design problem that something had to have fucked up very badly somewhere along the way.
Like Chernobyl levels of shutting off all the reactor safety systems fucked up.
Then they just opened the release valves of highly radioactive gas into a densely populated urban enviornment and to keep the plant operational, they ask the local regulators to increase the maximum safe radation dosage for the local area.
People point to China and India as model examples of countries with little to no regulatory oversight in building nuclear reactor plants on time and even below budget.
I feel perfectly safe living next to an American 1960 (over half a century of continual operation) nuclear power plant. Chinese or Indian operated reactor plant is a completely different story.
Holy "didn't read the article properly", Batman!
It specifically says nothing melted, and there was no radiological incident according to the IAEA (i.e. not the Chinese covering their arses). Calling this a critical failure or making any comparison to Chernobyl is disinformation on a par with some of what the anti-vaxxers have been coming out with!
The issue was a manufacturing flaw in the coating of some fuel rods, allowing fission products to leak into the primary coolant, which is specifically designed to contain this sort of minor leak. And they did actually later shut down to replace the affected fuel rods, because that's all that needed to be done.
Of all the disagreements we may have with China, they are doing nuclear power right and we definitely should be following their example, not spreading misinformation which will inevitably put people further off nuclear power altogether.
Excuse you. The Indian Nuclear scene has been one of the more peaceful ones so far. Don't be so hasty to put people down like that.
A couple years delayed for a civic project is the good outcome. I'd kill if a bridge in my city could get built only a couple years late.
Regrettably, a typo was missed and all 3 pairs were XS.
Accountants don't approve the budget, the managers do. In a well-structured organization, it's the relevant department manager responsible for putting in a requisition for the tools or supplies they will need. The accountant's job is to ensure the orders are as per the requisitions and POs. So they'll pay only invoices with approved POs abd requisitions. Otherwise, you end up with very rich accountants getting kickbacks from in-approved suppliers or stealing money from the organization. At the end of the financial period, the accountant will show which departments had favorable or unfavorable variances from the budget and let management decide what to do about.
Again fuck Jeff
Hit a nerve, too soon?
I just miss Janet from accounting
Heard she hated Jeff...
At this point who doesn't
Don't forget Dave having a crafty hand-shandy in a portaloo at lunch time.
Seriously fuck Jeff
Fuck you Jeff
You misspelled appropriate.
And the graft to the politicians and NGOs to get it approved.
This looks like China and you know damn well there was none of that shit. This bridge was probably willed into existence by the government.
And the construction companies bribing officials with money and prostitutes to get the contract.
Don't forget the sub committee meeting to approve a post board meeting.
2,000? Try 20,000. Being conservative.
They bill for 20,000 but at the end of the day all the math and design for 99% of road bridges is already done and the projects are largely copy/paste based on input.
I work for the DOT doing surveying and elevation work and there's no need to "re-invent the wheel' when it comes to bridges that carry automobiles.
Especially the part where he's crying in the corner because SolidWorks crashed again and didn't save when he thought it did.
Sorry, not a whole bridge but a different angle. https://www.youtube.com/watch?v=vKGYs71N72c
This is a much better angle, thanks for posting!
There’s a new bridge being built near me, but it’s hard to see the progress because the area is somewhat rural now, with no sidewalks or anywhere to get a good look at the progress without getting in the way.
Construction fascinates me.
I seem to recall seeing a longer video of a similar operation here on reddit. Year or two back though, no chance I can dredge up a link now. Every part of both videos just amazes me, from the equipment and technique, to the massive pieces of bridge made for this.
That’s built by cranes not a crazy floating truck
Cantilevered, not floating.
Haha I know!
My upper deck was built off a cantilevered part of the house. It was basically floating until my home inspector suggested I have the seller reinforce it with additional posts.
We still don’t walk on it very often, basically it’s just shading the back porch.
That’s the Tappen Zee Bridge!
I’m from NY. It’ll never be any Cuomo anything bridge.
Hey, snap. We are just about to use one of these on my project. First span in a 1 km bridge being launched on 1st Oct. impressive machines.
Very cool, do you have more info?
I recently started my internship at a company which does heavy lifting, we also do bridges but more with SPMT's etc
40 tonne t-girders. 4 beams to a span, 40 meters long. All over water. Machine is not quite as big as this one, but same action.
The lego one helps me understand this a lot better. Was going to ask how the support system worked to ensure it didn’t tip over.
Oh man, came here just to say: hey, this is just like the Lego version. r/angryupvote
Incredible how much lego inspires life! ^^/s
this is an impressive video. but the lego version is way more impressive.
I know I hate having to explicitly state “WARNING EVERYONE, THIS IS A JOKE. I REPEAT, THIS IS A JOKE” but since, not even recently, maybe 3-4 years ago a lot of people cant catch it. r/fuckthes
Some people are really oblivious over text without voice inflection to help hint at it being a joke. Some jokes are about positions that a disturbing number of people genuinely believe in, and strangers have no way of reasonably knowing if you're one of them. The /s can go a long way to clearing up communication between strangers.
And yet, here people like you are, making a big deal about resisting the S that nobody is forcing you to use. Go ahead, don't use it, just deal with whatever comes if somebody happens to misunderstand you. But the "fuckthes" thing is weird and reminds me of the old evangelical Christians defending against the "war on christmas" that nobody was actually waging
Fucking hell that's cool
Legit set of Legos and that controller for it... Damn
I would not want to be stuck behind one in traffic. I mean, how to you even get it there?
You don’t. It’s moved in sections and assembled at the construction site
Imagine getting behind one on the bridge. It would take like months to get to work
Aren't you an optimist!
How many people control one of these
I have no experience with this equipment, but I’ve been around other large specialty moving equipment and usually one operator has a control board strapped to their chest with 20-40 controls on it. I worked for a shipyard that had the world’s largest marine travel lift, which picks up boats out of the water and puts them on blocks for repairs. It could move a 200-ft, 1000 metric ton boat. Had 8 independent winches and 4 sets of individually controllable tire groups (4 each 10ft tall and $30k each). The control board was about 18” wide and had a full harness to attach to the operator. He could control the winches as a single unit, or grouped by corners, sides, ends, or individually, and could steer the whole thing as a unit or adjust each set of wheels however he wanted to walk it sideways or at an angle or make a really weird turn.
Not near as cool but the overhead crane at work that I operate has a remote that goes around the waist. 4 hooks thats run independently or together. Lots of switches
So a single person operates that?! Wayyyy too much stress for me holy shit. Thanks for the info!
There would be a lift supervisor and a support crew working together, but you only want one set of hands on the controls if possible. If you have separate people controlling it (which is entirely possible here) there is a greater chance of an incident.
That's a good point. One slacker would destroy everything
That sounds incredible! Thanks for sharing.
Does the work happen relatively quickly or is it very slow? How long would it take to pick up a ship and move it to it's new location?
A couple hours of prep, 20-30 minutes for the move, a couple hours to secure the boat on cribbing and unhook the straps.
Wow that sounds like a lot of work! Thanks for answering.
I thought so, just didnt wanna say it cuz I wasnt sure
Who is out there putting music on these videos? Is there someone who thinking, "Let's amp up this video with some strings to bring some more emotional impact"?
Exactly! In general music added to videos help express the desired emotion but it also works for short “boring” videos specifically to hook and sink people’s attention for view count = ad revenue
Would be better with yakkity sax imo
Or Benny Hill
The music on this one was pretty meh, but professionally produced heavy equipment videos from the manufacturers tend to have pretty epic music.
Definitely someone with marketing in their title.
Fucking TikTok. Apparently our attention spans have been deemed too short to watch a video without utterly shit and unrelated music tracks behind it
That's clever to use the bridge piece as a counterweight as the machine cantilevers to the post.
I am bender. Please insert Girder.
FAB ON. APPLY DIRECTLY TO CONSTRUCTION.
Not my proudest fab.
Totally! As if this doesn't end with a call to International Rescue
I was more interested by the accelerated formation of clouds behind
*Me, an intellectual:* “Shiiit, how high are those trees tryna get??”
Never ever as high as your intellectualism
Straight bridges only I assume?
Naa, that beauty will build one hella gay bridge too
A rainbow Bridge between the realms
It can do a curving bridge, any bridge of this design with a turn it it is a very gradual turn that such a machine can manage. It helps that every single wheel set can be independently controlled for extremely precise placement.
I have the girder SLJ901 at home, not this antiquated 900, and it's vastly superior. /shit post
Does it have AutoPilot? Supercharging? Built-in wifi? Smart Summon? No?
I think you got a girder for noobs.
If I can't control the SLJ901 with my Alexa I'm not interested
Not sure why, but i first read the title as "birdie girdie"
I thought it was live action Dinotrux
I thought that was a pirate era crank lyre?
Now I have a Donovan song stuck in my head.
BACKGROUND: The World breathing
Those misty mountains are even more gorgeous in real life.
I've had the chance to ride on a road between mountains like this before and it's truly an amazing sight. The view from the high bridges that cross the valleys is magnificent.
Now THAT'S a specialized tool... People over here posting rubber mallets and shit
My response when I saw this: “Whaaaat? No fucking way.”
I think this may be the most impressive thing I’ve seen on this sub. I usually just think the subject is interesting, upvote and move on. I don’t really have much reaction to it.
Fuel consumption per 100km:
Is there a reason why machines like this only seemed to be used in China? You would think this would be a slam dunk for western countries because labor is more expensive, but I've never seen one used outside of China.
stupid question: how does it redistribute the weight to not make the front end fall?
I wonder, how are these behemoths transported to the site? In pieces?
This obviously isn't in America because it didn't take them 8 months to put that one piece in.
I never see the part where they add the support pillars anyone got a source on that
In a future post apocalyptic society, they will stand amazed by these bridges we built, and read in textbooks how hundreds of thousands of slave labourers used rope and pulleys along with wedges to get these large slabs into place lol
ok, now do 1 without a pillar
i mean. i wanted to see how they build bridges across long gaps of pillars instead of this vid with pillar literrally right there
Bigger span bridges, there's a ton of ways.
If you can, building this kind of bridge with pillars everywhere is best. Even across bodies of water it can be done, like the Confederation Bridge in Canada, all the pillars were placed, then they could crane in the spans.
There's also suspension bridges where you build far fewer pillars, but run cables across then suspend sections from the cables
Unless you have to, though, don't make your life more complicated than it needs to be. For where these kinds of machines are used, there's plenty of space to build as many pillars as you need and keep such a vehicle busy on multiple spans as part of a many years long major infrastructure project.
I’m going to guess cranes
You don't use this machine
All i heard was the 1980/90’s Micro-Machine guys’ voice
I've seen a fully functional model of something like that built out of Lego. I'm glad I got to see this IRL demonstration. This thing is super cool.
How much does one of those cost?
That, is cool.
Way better than the 850x
This is so cool
I love this subreddit because most of the industrial tools amaze me as much as sci-fi movie.
And sometimes more because of a creativity and details in everyday engineering that few sci-fi art possess.
Thank you for all these great contributions.
I’m actually just as impressed that the pillar placement was so perfect. I can’t even set fence posts straight and at the right distance apart.
Those hills look as if they are boiling, like a pot of water.
This machine was literally designed and built just to do this! Sheeesh!
My man turned on fly hack
Impressing what is possible today
I wonder how many of those people working are engineers and how many are trades person? Curious.
Well, I'm fully erect
are they putting screws on?
I am Bridger. Please insert girder.
I am Bridger please insert girder.
I bet the SOP for this thing is a beast of a tome. Either that or it's all tribal knowledge.
I absofuckinglutely love this. I saw it and was like oh oh my favorite.
This is incredible
This should be on r/humanforscale
I guess i know why is “9” there
Does anyone know what the music is?
What is this?! Thunderbirds?! Lol
How big is the counterweight on this thing? I would have a guess at FUCKING huge.
The bridge span it's carrying is the counterweight.
Clever! So have figured that out on my own. Sigh…
I'd like to see the whole vehicle
This was a cool one!!!!
Got a definite Thunderbirds vibe from this
I would like to deliver one of these in Snowrunner
Goddamnit that is cool. True testament to the power of our brains.
OK so the first thing that went through my head was "I hope this isn't /r/IdiotsInCars and they back that $50M machine into the ravine down below." Then I nearly shit myself as it drove off the cliff (fortunately it was supported lol).
[I had the scene in Jurassic Park 2 where the T-Rex is pushing the RV over the cliff running through my mind the entire time.](https://www.youtube.com/watch?v=LpxwR_9EhlY)
Is that a Binford?
“Oh shit my foot got squished”
This is amazing
Which country is this in?
China. This machine is a chinese design for building HSR and highways.
Ah yeah should have known. They do be building a lot of infrastructure these days, so I guess a machine like that would be a sensible investment
Yes. The initial machine is a german one, but china has deeply innovated and improved the original designs. Look at their bridge builders and railway builders, those are monster machines. This makes roads and bridge very standardlized, and a main reason why china can build very efficiently and cheaply
And people still scream “forced labour” lol.
Totally agree. But I think bit by bit I see people waking up to the fact that China is just a normal country, for all it's faults, not some fucking movie villain
It is sad. Both China and US can learn A LOT from each other.
Never see this efficiently in USA, Inc. we could probably redo the entire infrastructure in 10 years to be on bottom level of western world if we used tools like this.
That's some quality girding.
I watched this being done by Devils Slide between Pacifica and Montara- south of San Francisco
I’m gonna ask this for my birthday
That looks so fricking cool
oh so THATS how they build bridges
For once I'm not mad at the music.
The trust bro!! 👌🏻
There’s a level of trust here that I don’t have
Ah yes, good ole repost #7281, classic.
But now with added shitty and distorted music! What a day to be alive.
And this is why we need corporations ...
Minecraft automatic bridge builder IRL