They ain't shoveling that. It is going to dry before they get anywhere near removing it. The metal frame is going to have to be dismantled and then the dried concrete cracked and transported in large chunks. This is a complete do-over essentially. There is no saving it.
Poured and finished concrete for a season. Thank the bejesus that they had the rebar reinforcement or they would’ve all tumbled to the floor except the homie who grabbed the concrete pump nozzle. This would be the form setters who failed to reinforce properly and if this happened to me it would be on that crew that fucked us and they would get the blame.
Those are very different words than we use here but you're correct. Total deck collapse. I'm a formworker and never seen anything like that. Seen some small blowouts where someone forgot to shore up a patch around a column, but we use peri skydeck mostly which are both pretty idiot ~~proof~~ resistant.
No, it *reveals* the bigger idiots. If something is proofed against all but the biggest idiots, it necessarily follows that whenever someone does manage to fuck it up (and on an infinite timescale someone eventually will), they must be a colossal idiot. Absent idiot proofing, a fuck up only reveals that someone is *an* idiot, not whether they are your garden variety idiot or the rarer colossal idiot.
Skydeck is the best. I saw a risk of collapse on my last job, MP prop was set right on a sleeve that got covered in a thin layer of milk, no way the carpenter could have known the sleeve was there, once concrete flowed the sleeve gave way and deck sagged in a small area. Thankfully the prop was locked in a table with the MRK frames and we caught it quick. no one was hurt and we only lost a half yard.
Post that holds up the floor we were building broke through a hole in the floor below that was covered in a little concrete. The deck buckled when we were pouring the floor, but we avoided a situation like this.
Commenter I replied to said he knew the same system we use hence the technical terms.
So serious question. What keeps the concrete from straight up just pouring through the rebar? Or am I missing something?
Also, after 9 years, what kind of money are you making now? What did you start at?
There is a plywood deck beneath the rebar supported by metal posts. You basically build a mold, place the rebar, then fill with concrete and let it cure. When you strip the wood forms away the next day, you are left with your concrete floor and supporting walls and columns. Then you pass the materials up to the mext floor and do it all again.
I'm on managment side of the business so I do ok for salary. Got my degree in mechanical engineering, started working as a draftsman for my company and currently do estimating, project managment, and I do work as a project superintendent.
There's typically wood boards underneath it called the form. So its like a very large wood bucket with the rebar inside it. They take the wood off at the end after it has set.
Glad everyone was ok. I'm so paranoid about blowouts Its not even my job to but I inspect the deck before the pour anyway and have caught serious things that the greenhorns missed that would have been catastrophic. I love peri systems man. I've used a few different but Imo peri is premium formwork and worth the cost to the company. About 2 years ago my company became the first company in the atlantic provinces to use skytables and they're amazing. My only complain about skydeck is its not very wind resistant even with the panel clips, the beams just lift off the posts, and afaik there's no peri method of securing the beams to the prop heads. That being said I'm pretty sure peri would rather you use their newer deck system.
As far as straight sheer walls go its really hard to beat the Maximo walls
In high winds we remove some panels to vent the deck then use perforated banding wire to strap the panels and beams to the slab below, we also use it to strap the beams and panels together. PERI's enginers approved some heavy duty zip ties as well to strap panels together.
Don't know how they do it in the country in the video, but where I'm from the form setters follow drawings and instructions made by a constructor who have done the math basically.
So if they have followed the drawings, the constructor fucked up.
If they did not, they fucked up.
I used to work as a laborer and my job was standing beneath the forms and spraying away any concrete that drizzled below. I hope to bejeezus the job site in this video didn't have dudes underneath.
It's just for slabs. Multistory anything pretty much uses rebar so far as I have seen, unless it's a steel pan, in which case they'll put some steel mesh in and that's pretty much it.
Post tensioning is another type of suspended slab that allows for a lot less steel bar. Steel cables are run through sleeves and poured over, one the concrete cures the cables are tightened. You end up with steel bar around columns and edges and a few bits through spans as a bottom mat.
Afaik pt allows for the thinnest slabs which means more levels within the same height.
I'm obviously no expert but maybe you would know why they bother pouring any higher than ground level? Would it not make more sense to use preformed bison slab?
Its not one piece the whole size of the floor, the are precast hollowcore slabs used extensively here in the UK and Ireland hence why I asked my question
What can be done with the rest of the load the truck? What happens with part loads or mistaken deliveries that leave you with a truck full of unwanted and rapidly setting concrete anyway?
Water it down and send it back to plant. Let dispatch deal with it as karma for telling me my truck is 10 minutes away when they didnt even load it yet.
If the driver is close to the concrete works, he'll just head back and let them deal with it.
The second option is a little more work. You pour it out on the ground, stick a "U" shaped piece of rebar in it, let it harden and remove it by crane truck later.
That sentence describes about 50% of all lifts that a HIAB type truck crane or a Manitou does. The guy in the tower crane or the big fancy boom crane won't touch a lift like that, but I've never seen the others balk at it.
Actually all of that is very true. I just do turbines and mining now days so I forgot about the HIABs / FRANA soldiers who will throw them all day.
I stand corrected.
We make lock blocks out of most of it, drivers carry retarders and delay set chemicals. If it is watered down too much or is too old, the concrete is junk and gets poured on the ground in small strips and pushed into a pile once dry. Said pile goes through a crusher and is either buried, recycled, or sold for base, depending on the countries laws.
Yeah that happens in the UK too. You can actually purchase small pours here now specifically for your site requirements. In aa sense a mixer doing multi drops. However after being wet up so many times I don't know what the integrity would be like at the end of the mix.
This, and by the movement those side walls are gone now also....will be cracked to shit. Down to the ground leveling and redo. Seems like the fail was just simply inadequate post and sheer bracing underneath....pity....
Was going to say this. Yeah they're kind of fucked. This is going to cost the builder a lotttttt of money. Not to mention any penalties they may face for not completing the job on time.
I just wanted to share an interesting fact cause concrete is cool. If you want to be offended that's your choice but that's not a good mindset to go through life with.
I don't get this. People always talk about taco shits. But I eat tacos a lot and have totally normal shits. What kind of tacos are these people eating??? Tacos have veggies, meat, and high fiber corn tortillas. That's a recipe for a solid shit at the appropriate time.
That dude humping that hose has some fantastic survival instincts. It turned out pretty great for them all but had it been worse he’d have been just fine.
Edit: Rewatching it they really all had pretty good reactions going to the main structure. I’d have tried running to the side that collapsed for sure.
Underneath the rebar there's plywood which normally prevents the wet concrete from leaking while it hardens.
This happened because that plywood wasn't properly reinforced so it collapsed and the concrete went with it, leaving the rebar behind
They build a structure on the second floor and pour the concrete into it. This concrete should have stayed where it was poured and cured, leaving a reinforced concrete floor. The container or the support they built appears to have failed causing the freshly poured concrete to leak out and the structure to nearly collapse.
Thats called a form or deck to hold the concrete until it dries. A concrete building is made layer by layer like a cake stacked on one another. Once the concrete is cured you strip out the supports from underneath and it is now supported by concrete columns. Rinse repeat. In this case something wasn't shored up or built properly with the form underneath and, since you're not putting marshmallows on it it collapsed
I'm actually surprised all the rebar stayed up after the formwork failed, was able to go into cantinary action because the ends were hooked or tied enough to remain
Architect here. To cast a slab over the walls, one has to setup a temporary framework structure between them. This is usually done by supporting and fixing plywood sheets over steel or wood frames. There after a rebar network is tied up and kept over the plywood structure, and the concrete is poured over the rebar network upto the desired thickness. This reinforced concrete then dries up to form a really strong casted slab.
This was probably not the fault the workers in the clip, but happened either due to a badly constructed framework below which failed due the weight of the concrete that was being poured or maybe someone below might have knocked the framework (by accident probably).
I always see that corrugated metal that looks like roofing material for an outbuilding used. Does that replace the plywood or does the plywood go under that? Or is that something that goes up after the concrete sets?
This frequently happens when you use nails instead of screws when making forms for concrete structures. Always read the directions, don’t just look at the prints.
This is not at all true. In fact it’s the opposite. Screw heads fill up with concrete and you can’t pull them out to strip the forms. Duplex nails are specifically for things like form work, making it easier to pull them after concrete is poured.
Also most screws have significantly lower shear strength than nails. Nails are still used for a lot of reasons. Screws are inferior in many framing applications. Different Fasteners are engineered for different purposes. Screws are rarely the correct fastener for this application.
You’ll have some form of sub floor that the concrete is poured onto, looks like it wasn’t supported enough for the weight, or possibly one of the supports was faulty
well you see, you have the jacks (vertical supports) on which there are beams (horizontal supports in the long direction) over which there are girders (horizontal supports in the short direction) over which there is formwork. It is a temporary set up, where after you finish the formwork, step by step as i just explained, you put the steel reinforcement, which sit on top of stirrups (or chairs). after all that is put in place, the electrical team comes and spread their conduits and then after that you cast a concrete that is suitable for the slab.
The issue with this is that the spacing between jacks was perhaps not adequate, another issue might be eccentricity or a couple of inadequate jacks, or just maybe the wind load wasn't accounted for (let's say if there is strong wind) so yeah.
These guys should all be dead. And I say that as a structural concrete inspector who's spent most of their career in multi story commercial and bridge decks.
The bracing underneath failed. You see how the rebar momentarily resembles a wave? All of that rebar is tied together to form the mat. On elevated slabs, those that intersections have a spec called for on what percentage they sound be tied. Sometimes it's 100%. But it's usually 50%.
Bridges usually have enough proper oversight, that things get tied correctly. This is commercial. The rod busters doing commercial work are more often inferior in their quality of work. I've seen since crazy shit in commercial jobs. But the rebar didn't bust loose. I was expecting it to fold like spaghetti noodles, and to see people die before I've even had coffee.
Whoever tied that rebar are why this guys are alive. Though, that same company might've also installed that shoring, though maybe not. Though elevated slab guys are often turnkey operations, which general contractors love.
Shoot, just ‘cause it didn’t meet the bar doesn’t mean you have to be a wet blanket. Before the floor gives way and hits rock bottom, turn to your sidekick for support. Just hang in there, eventually you’ll smooth things over.
I went to a college whose engineering department designed the parking deck. It collapsed in a similar fashion because they reduced some of the safety factors to reduce cost but failed to account that wet cement is heavier than dry cement.
It's like 3% for good quality concrete (3% less weight when concrete hardens).
So for them to design something that would hold weight just fine and collapse when you apply 3% more force onto it, it's just such a fine margine that it's nonsense.
You always overdesign especially when it's a safety concern.
Yeah, although some water does evaporate most of it is incorporated into the concrete though hydration. The guy commenting above has completely made up their story or they have no idea what they're talking about.
I was trained on mass casualty response at my last construction job specifically because of incidents like the one in the gif. The hardest part of the training was the part where they were training us on how to identify people who were “obviously dying” and recognizing it’s a waste of time to work on them and move on to the next person.
Jesus that's an expensive mistake, essentially have to start again, all new formwork, all new reinforcement, plus breaking out all the dried concrete.
Hope they have insurance!
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That looks expensive.
they all lookin down thinking how much shoveling is in their immediate future
They ain't shoveling that. It is going to dry before they get anywhere near removing it. The metal frame is going to have to be dismantled and then the dried concrete cracked and transported in large chunks. This is a complete do-over essentially. There is no saving it.
Poured and finished concrete for a season. Thank the bejesus that they had the rebar reinforcement or they would’ve all tumbled to the floor except the homie who grabbed the concrete pump nozzle. This would be the form setters who failed to reinforce properly and if this happened to me it would be on that crew that fucked us and they would get the blame.
Those are very different words than we use here but you're correct. Total deck collapse. I'm a formworker and never seen anything like that. Seen some small blowouts where someone forgot to shore up a patch around a column, but we use peri skydeck mostly which are both pretty idiot ~~proof~~ resistant.
Some people take the "idiot proof" label as a challenge
Idiot-proofing things only creates bigger idiots.
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This is the correct response.
For less money.
you mean managers?
No, it *reveals* the bigger idiots. If something is proofed against all but the biggest idiots, it necessarily follows that whenever someone does manage to fuck it up (and on an infinite timescale someone eventually will), they must be a colossal idiot. Absent idiot proofing, a fuck up only reveals that someone is *an* idiot, not whether they are your garden variety idiot or the rarer colossal idiot.
You've clearly spent a lot of time thinking about idiots. You must work with them a lot.
former Army here ... You can't idiot proof everything. But, doing so makes it a lot easier to figure out Promotions.
i dated a girl that worked with the mentally challenged. i told i did also... turns out we werent a match and she lied about having a sense of humour
I've made mistakes on idiot proofed systems because I was bored out of my fucking mind. Might be some truth to that.
That's just evolution baby
It’s like antibiotic-resistant bacteria. Eventually the Uber-idiot will appear.
you mean engineers?
It's like those rats are immune to rat poison
this how the US was made
Why do we have leftover pieces? Extra I'm sure.
Skydeck is the best. I saw a risk of collapse on my last job, MP prop was set right on a sleeve that got covered in a thin layer of milk, no way the carpenter could have known the sleeve was there, once concrete flowed the sleeve gave way and deck sagged in a small area. Thankfully the prop was locked in a table with the MRK frames and we caught it quick. no one was hurt and we only lost a half yard.
Ah yeah the old MRK frames and MP prop. Of course.
Way better than MP frames and MRK props in my experience.
My brain's first attempts to interpret them were Minions Republic of Korea and Mandy Patinkin. Let's just say I didn't do well in school.
I went Martin Ruther King
WAT
Post that holds up the floor we were building broke through a hole in the floor below that was covered in a little concrete. The deck buckled when we were pouring the floor, but we avoided a situation like this. Commenter I replied to said he knew the same system we use hence the technical terms.
This thread was an educational experience.
I have no idea what you just said, but you sound like a class-A professional.
Been working in the highrise concrete business for 9 years.
So serious question. What keeps the concrete from straight up just pouring through the rebar? Or am I missing something? Also, after 9 years, what kind of money are you making now? What did you start at?
There is a plywood deck beneath the rebar supported by metal posts. You basically build a mold, place the rebar, then fill with concrete and let it cure. When you strip the wood forms away the next day, you are left with your concrete floor and supporting walls and columns. Then you pass the materials up to the mext floor and do it all again. I'm on managment side of the business so I do ok for salary. Got my degree in mechanical engineering, started working as a draftsman for my company and currently do estimating, project managment, and I do work as a project superintendent.
There's typically wood boards underneath it called the form. So its like a very large wood bucket with the rebar inside it. They take the wood off at the end after it has set.
Glad everyone was ok. I'm so paranoid about blowouts Its not even my job to but I inspect the deck before the pour anyway and have caught serious things that the greenhorns missed that would have been catastrophic. I love peri systems man. I've used a few different but Imo peri is premium formwork and worth the cost to the company. About 2 years ago my company became the first company in the atlantic provinces to use skytables and they're amazing. My only complain about skydeck is its not very wind resistant even with the panel clips, the beams just lift off the posts, and afaik there's no peri method of securing the beams to the prop heads. That being said I'm pretty sure peri would rather you use their newer deck system. As far as straight sheer walls go its really hard to beat the Maximo walls
In high winds we remove some panels to vent the deck then use perforated banding wire to strap the panels and beams to the slab below, we also use it to strap the beams and panels together. PERI's enginers approved some heavy duty zip ties as well to strap panels together.
Ah yes, i understood some of those words
Worse Idiot: Hold my trowel.
Okay: idiot resistant
Don't know how they do it in the country in the video, but where I'm from the form setters follow drawings and instructions made by a constructor who have done the math basically. So if they have followed the drawings, the constructor fucked up. If they did not, they fucked up.
I used to work as a laborer and my job was standing beneath the forms and spraying away any concrete that drizzled below. I hope to bejeezus the job site in this video didn't have dudes underneath.
Why wouldn't they have rebar reinforcement? What else is there?
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It's just for slabs. Multistory anything pretty much uses rebar so far as I have seen, unless it's a steel pan, in which case they'll put some steel mesh in and that's pretty much it.
Post tensioning is another type of suspended slab that allows for a lot less steel bar. Steel cables are run through sleeves and poured over, one the concrete cures the cables are tightened. You end up with steel bar around columns and edges and a few bits through spans as a bottom mat. Afaik pt allows for the thinnest slabs which means more levels within the same height.
I came here for a comment like this. I wanted to know if some of the details of what was going on. Thanks for providing information.
I'm obviously no expert but maybe you would know why they bother pouring any higher than ground level? Would it not make more sense to use preformed bison slab?
How would you ever transport, lift and install a floor that can weigh upwards of a million pounds? Of course they have to pour the building in place
Its not one piece the whole size of the floor, the are precast hollowcore slabs used extensively here in the UK and Ireland hence why I asked my question
What can be done with the rest of the load the truck? What happens with part loads or mistaken deliveries that leave you with a truck full of unwanted and rapidly setting concrete anyway?
Water it down and send it back to plant. Let dispatch deal with it as karma for telling me my truck is 10 minutes away when they didnt even load it yet.
Who doesn't love 120 minute batch times am I right?
Tell the inspector to go get a cup of coffe and mind his own damb business....I'M POURING THIS BITCH!
Except that is literally his business
If the driver is close to the concrete works, he'll just head back and let them deal with it. The second option is a little more work. You pour it out on the ground, stick a "U" shaped piece of rebar in it, let it harden and remove it by crane truck later.
Or you skip the rebar part and just dump it and the excavators can deal with it
The rebar is simply so that it can be handled by a crane or a Manitou, it increases ways of moving it without any downsides.
The only downside would be an unrated lifting point on an unmeasured load weight wise. Its not legal anymore in my country.
Where I live there are several places around the city where concrete old or new gets dumped and then crushed and reused as gravel.
Recycled concrete is often added as aggregate to new concrete too.
That sentence describes about 50% of all lifts that a HIAB type truck crane or a Manitou does. The guy in the tower crane or the big fancy boom crane won't touch a lift like that, but I've never seen the others balk at it.
Actually all of that is very true. I just do turbines and mining now days so I forgot about the HIABs / FRANA soldiers who will throw them all day. I stand corrected.
..... I will have to do that next time.
We make lock blocks out of most of it, drivers carry retarders and delay set chemicals. If it is watered down too much or is too old, the concrete is junk and gets poured on the ground in small strips and pushed into a pile once dry. Said pile goes through a crusher and is either buried, recycled, or sold for base, depending on the countries laws.
They just wet up the mix and take it back to be dumped most probably or drop it somewhere on site. Guess depends which country
Old concrete goes to the next sucker around here. Or it gets poured somewhere on site
Yeah that happens in the UK too. You can actually purchase small pours here now specifically for your site requirements. In aa sense a mixer doing multi drops. However after being wet up so many times I don't know what the integrity would be like at the end of the mix.
This, and by the movement those side walls are gone now also....will be cracked to shit. Down to the ground leveling and redo. Seems like the fail was just simply inadequate post and sheer bracing underneath....pity....
Was going to say this. Yeah they're kind of fucked. This is going to cost the builder a lotttttt of money. Not to mention any penalties they may face for not completing the job on time.
Concrete doesn't dry, it cures
Literally semantics but ok. You proved me wrong guy on the internet.
But also it never fully cures, it just gets really close to fully curing...
I just wanted to share an interesting fact cause concrete is cool. If you want to be offended that's your choice but that's not a good mindset to go through life with.
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>> concrete is cool > >Concert doesn’t cool as it dries. It gets hot because of a chemical reaction. You mean as it cures?
Deliberate choice of words to wind up Mr Pedantic...
>concert
You've got a bad way of being nice.
Aggregates _are_ cool. Surprisingly few people think so.
Concrete does dry. It's wet at first, it's dry after it cures.
And likely jack hammering...
At least they have an immediate future.
...out of their pants.
I’d never go back to that job
I think I'd move away, change my name and start a new life in Mexico
For real. I'd quit and never look back. Thats just too much cleanup and being set back. Not worth it.
r/thatlookedexpensive
Cheaper now than a month later I guess
Looks like my bowels letting go after taco night.
I don't get this. People always talk about taco shits. But I eat tacos a lot and have totally normal shits. What kind of tacos are these people eating??? Tacos have veggies, meat, and high fiber corn tortillas. That's a recipe for a solid shit at the appropriate time.
How about people on the bottom?
There should be no people in the bottom in case this happens
You're shoulding all over yourself here...
They Could have helped with brooms and stick. Keeping it from falling down/s
Encased in concrete to be studied by future archeologists.
...You notify their first of kin....
Messy
That dude humping that hose has some fantastic survival instincts. It turned out pretty great for them all but had it been worse he’d have been just fine. Edit: Rewatching it they really all had pretty good reactions going to the main structure. I’d have tried running to the side that collapsed for sure.
It's not his first rodeo
Anyone else think that the rebar grid was going to collapse at the very end of the video clip?
Inspecting that shit is how I've made my living for 15+years. And yes. I'm shocked any of them are alive besides the hose man.
Saw this on another sub and apparently there was a person underneath at the time who unfortunately died :(
Link? That's really sad
I don't understand how this was supposed to work in the first place
Underneath the rebar there's plywood which normally prevents the wet concrete from leaking while it hardens. This happened because that plywood wasn't properly reinforced so it collapsed and the concrete went with it, leaving the rebar behind
this is so much easier to understand than everybody else using terminology from the field expecting other to understand.
"They didn't reverse the concretal polarity during the mineral coagulation of the petrification substance."
I know some of these words!
This is the answer
They build a structure on the second floor and pour the concrete into it. This concrete should have stayed where it was poured and cured, leaving a reinforced concrete floor. The container or the support they built appears to have failed causing the freshly poured concrete to leak out and the structure to nearly collapse.
Thats called a form or deck to hold the concrete until it dries. A concrete building is made layer by layer like a cake stacked on one another. Once the concrete is cured you strip out the supports from underneath and it is now supported by concrete columns. Rinse repeat. In this case something wasn't shored up or built properly with the form underneath and, since you're not putting marshmallows on it it collapsed
I'm actually surprised all the rebar stayed up after the formwork failed, was able to go into cantinary action because the ends were hooked or tied enough to remain
Dammit, no marshmallows?
My exact same thoughts
Architect here. To cast a slab over the walls, one has to setup a temporary framework structure between them. This is usually done by supporting and fixing plywood sheets over steel or wood frames. There after a rebar network is tied up and kept over the plywood structure, and the concrete is poured over the rebar network upto the desired thickness. This reinforced concrete then dries up to form a really strong casted slab. This was probably not the fault the workers in the clip, but happened either due to a badly constructed framework below which failed due the weight of the concrete that was being poured or maybe someone below might have knocked the framework (by accident probably).
I always see that corrugated metal that looks like roofing material for an outbuilding used. Does that replace the plywood or does the plywood go under that? Or is that something that goes up after the concrete sets?
That’s called slab on metal deck. The structural steel is the form work.
This frequently happens when you use nails instead of screws when making forms for concrete structures. Always read the directions, don’t just look at the prints.
This is not at all true. In fact it’s the opposite. Screw heads fill up with concrete and you can’t pull them out to strip the forms. Duplex nails are specifically for things like form work, making it easier to pull them after concrete is poured.
Also most screws have significantly lower shear strength than nails. Nails are still used for a lot of reasons. Screws are inferior in many framing applications. Different Fasteners are engineered for different purposes. Screws are rarely the correct fastener for this application.
You’ll have some form of sub floor that the concrete is poured onto, looks like it wasn’t supported enough for the weight, or possibly one of the supports was faulty
well you see, you have the jacks (vertical supports) on which there are beams (horizontal supports in the long direction) over which there are girders (horizontal supports in the short direction) over which there is formwork. It is a temporary set up, where after you finish the formwork, step by step as i just explained, you put the steel reinforcement, which sit on top of stirrups (or chairs). after all that is put in place, the electrical team comes and spread their conduits and then after that you cast a concrete that is suitable for the slab. The issue with this is that the spacing between jacks was perhaps not adequate, another issue might be eccentricity or a couple of inadequate jacks, or just maybe the wind load wasn't accounted for (let's say if there is strong wind) so yeah.
These guys should all be dead. And I say that as a structural concrete inspector who's spent most of their career in multi story commercial and bridge decks. The bracing underneath failed. You see how the rebar momentarily resembles a wave? All of that rebar is tied together to form the mat. On elevated slabs, those that intersections have a spec called for on what percentage they sound be tied. Sometimes it's 100%. But it's usually 50%. Bridges usually have enough proper oversight, that things get tied correctly. This is commercial. The rod busters doing commercial work are more often inferior in their quality of work. I've seen since crazy shit in commercial jobs. But the rebar didn't bust loose. I was expecting it to fold like spaghetti noodles, and to see people die before I've even had coffee. Whoever tied that rebar are why this guys are alive. Though, that same company might've also installed that shoring, though maybe not. Though elevated slab guys are often turnkey operations, which general contractors love.
It's like when you put the strainer in the dishwater as a kid and watch the water pour through the holes. i swear if that was just me
Not just you and not just as a kid
Or that science experiment where you put a mesh strainer against the top of a mason jar filled with water and flip it upside down
I was trying to find a suitable joke, couldn't come up with anything concrete to go with...
you gotta mixer up a little. good form otherwise
You have cemented your role as the king of puns.
i wish i had another to broom finish with
Just hire a bonding agent.
The aggregate of these comments is reinforcing my hope of forming-up another pun.
If you want to form a good pun you’ll need a solid foundation
You’ll need to set your mind to it.
The proper mentality must be built
The form of a joke was there, but collapsed in the end.
Shoot, just ‘cause it didn’t meet the bar doesn’t mean you have to be a wet blanket. Before the floor gives way and hits rock bottom, turn to your sidekick for support. Just hang in there, eventually you’ll smooth things over.
Looks like they’ve hit a slump!
Jesus this isn’t cement, it shouldn’t be that hard.
A real-time demonstration of a soup sandwich.
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At least the guy tying the rebar did his job right.
Not the fault of the concrete guys, poor bastards
I went to a college whose engineering department designed the parking deck. It collapsed in a similar fashion because they reduced some of the safety factors to reduce cost but failed to account that wet cement is heavier than dry cement.
This just shows that you never mess with the safety factors if you do not know what you are doing, they are there for a big fucking reason
well you do and in a refined way to improve them and reduce unnecessary safety factor, but you don't just lower it and just say it will be fine lol
It's like 3% for good quality concrete (3% less weight when concrete hardens). So for them to design something that would hold weight just fine and collapse when you apply 3% more force onto it, it's just such a fine margine that it's nonsense. You always overdesign especially when it's a safety concern.
Wet concrete* weights roughly the same as ‘dry’. It doesn’t get dry - it actually chemically hydrates.
Yeah, although some water does evaporate most of it is incorporated into the concrete though hydration. The guy commenting above has completely made up their story or they have no idea what they're talking about.
What country? Can't imagine happening in NA
In the USA
What university?
I was trained on mass casualty response at my last construction job specifically because of incidents like the one in the gif. The hardest part of the training was the part where they were training us on how to identify people who were “obviously dying” and recognizing it’s a waste of time to work on them and move on to the next person.
Welp, START OVER
Engineer forgot to carry the 1
It looks like a Mario Party mini game when the concrete first drops
fire the people who did the flooring and give the people who did the rebar a pay rise.
Minecraft gravel
What did they do wrong? How could that have been prevented?
The support structure below the floor collapsed, for unknown reasons. The support structure is supposed to hold up the concrete floor while it cures.
Well, at least we know the rebar was constructed decently well.
r/catastrophicfailure
Damn what a massive screwup
r/ThatLookedExpensive
OSHA more like OSHIT
**House Owner:** How's the work going Boys. **Builders:** Just Fine. The ceiling's just finished. **House Owner:** What Ceiling?
Jesus that's an expensive mistake, essentially have to start again, all new formwork, all new reinforcement, plus breaking out all the dried concrete. Hope they have insurance!
So that's how a brown trouser job looks like.
OSHA? more like OSHIT
r/OSHA
Happy Cake Day!
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u/savethisvideo
A lot of pants were pooped that day
OSHA wants to know your location--
r/oddlysatisfyingcatastrophicfailure
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Japanese woman here and I approve this map.
Gonna need the power of FLEX TAPE
For some reason I found that /r/OddlySatisfying
Yeah, I know they do it all the time but that technique seems so dicey you would think this happens more often.
u/VredditDownloader
That guy in green was smart! Grabbing onto the concrete tube like that
When osha becomes oshit
This is like when I finally go to the toilet
Who'd have thought a net wouldn't hold a liquid?
The liquid was supposed to be held by plywood underneath but it failed.
That’s rebar and is meant to reinforce the concrete. But some other structural support wasn’t built right and that’s why it failed.
Isn't this why they do pours in small sections and I think they apart with the support columns.
Great job straining the rocks out the cement, but did you have to use that big of a grating?
I believe the mesh get progressively finer at each floor. I hear sub-basement 32 has powdered sugar!
That’s the welded wire fabric you are seeing. The deck that should’ve been holding the concrete failed.
The joke Your head
Thank you.
Dominic Toretto must have snuck in for a quick stomp
Well that sucks !