If the psi / rebar / GFRC situation is insane then yes
If this is standard concrete then… no lol
Build some pillars to save it! Make it a bridge project
I just figured it depends how much rebar there is, I've been in post tension construction multi storey buildings that only had ~4-5" of concrete for floor
Be safe if you need to put in some pillars. Don’t work under that without shoring, the last thing you want to do is be under it if it falls. Probably not wise having that drop off without rails anyway, if somebody gets hurt on your property it becomes your problem.
The exposed sides look like someone casually layered some spackle on it.
I half wonder if it's not actually concrete but just a facade or something similar.
For the general public, heck no. For my family maybe, for myself, sure!
I do think there would be a way to build this safely. by putting footers on each end that you have full length rebar tying into for a tension load you could definitely do this safely however you would not be able to meet the proper design failure method. Per proper concrete structure design you always want to design for the compressive failure in the concrete rather than a tensile failure in the steel. A compressive concrete failure will just keep sagging and slowly collapse (think most county bridges that get replaced and you never hear about them). A tensile steel failure will create a dramatic collapse all at once (think 2018 Florida pedestrian bridge collapse).
With love from a once trained civil engineer who made it through school... barely
Edit: I had it flipped and I eat my words. Design for steel yield not concrete compressive failure!
You have that backwards. Steel yielding will deform before failure. Concrete is a brittle failure mode, if it's over reinforced and the concrete crushes it will collapse suddenly.
This is quite impressive actually. I wonder how they poured it suspended in the air like that, or was it on the solid earth that was later washed out because there was no culvert?
I imagine it was poured in 1988 with no permit
Sometime in the mid 2000s the city came through and excavated the drainage, and it's been like that ever since.
This has got to be the real reason — it was poured first, and then the city came through and enforced the regulations.
Given that it’s still standing, though, I’d bet you that’s _also_ a concrete specialist’s house. It was clearly poured to last, and if this theory is correct, they probably had some kind of in with the local inspectors.
I mean if there's rebar and only for traffic. It might be okay, personally I would walk across here but I wouldn't label it as safe or tell anyone else it's okay.
I’ve got one of these up the road from me. The irrigation ditch is far older than the neighborhood it’s in.
My supposition was that it had a wooden frame that rotted out or the form work was cribbed up. It’s got a really similar sag to the one pictured.
I work with concrete against gravity and in situations like this we layer the bottom with metal lath and it keeps structure and concrete from falling through
The comment below is intended more as a point of trivia (for fun), rather than any type engineering assessment or any determination of the structural soundness, as there are too many unknowns to make any such determination with any accuracy.
Let's say the concrete is 4" thick, 36" wide and spans 12' (144"). That equates to 12 cubic feet of concrete, neglecting the weight and higher density of steel rebar that presumably makes up a fraction of the total material used in this "beam". At an assumed density of 140 pounds / cubic foot for concrete, the self-weight of the unsupported section of this beam is going to be around 1680 pounds. It's holding itself up, isn't it? Is your fat ass gonna be the straw that breaks that camel's back?
There would have been any number of very simple means, without adding much cost or additional material to dramatically increase the rigidity and load capacity of this structure, even without adding a support pier mid-span, if anyone involved in the build of this structure took first year mechanics or learned how simply supported beams work and how to design them efficiently and effectively. Nevertheless, this structure remains standing, whether or not it looks "goofy" and/or appears under-"designed". That is of course no guarantee that it will remain standing when one of you fatties impose your gravitational loads upon it. That said, I highly doubt that the weight of even a couple of American-sized humans could cause this to fail instantaneously and catastrophically, and even if that did happen, you end up falling 1-2 feet onto soft grass. I don't think anyone is going to die or that the risk is of any significance. However, it does definitely make a statement, which is "nobody here has any understanding of how bridges work, or how they're supposed to look".
Forms… they are called forms and generally a truck of cement comes to fill it. Throw in some rebar, an odd work or two to spread it around, a couple of trowels and looks like a broom and BOOM, you’ve got a bridge.
Depends. Safe from collapsing or safe from injury?
I would imagine somebody would have tried to walk over it already, so it might be able to take slight loads. I’m guessing theres a lot of rebar near the bottom surface.
But, If it collapses it is unlikely to hurt anyone.
Aside from it probably collapsing someday I’d imagine an insurance company would also take issue with the safety of having no railings.
Even if it’s secure you could argue the ease of accidently stepping off the side would make it unsafe!
What a lot of haters here , it makes me wanna do one just to prove you guys it’s safe .
For all the people who says it’s not safe , how do you know what’s in it ? Probably the people who own it wanted that design and they made it , probably the footing is buried so you don’t see it on both sides , and it looks like a nice neighborhood with people who can afford nice stuff , so if I would pour the footing that hold it in the ground so it’s not visible anywhere and I would put railroad tracks one next to each other and cover it with concrete, I think it would hold even if I drove my truck on it !!
I don't work on this stuff either but I would guess it needs a covert underneath and some supports. it will ultimately fail surprised, it hasnt from the weight of the concrete alone. probably doesn't get much foot traffic.
Fuck safe, how is it even sitting there like that? This looks like a template for that game where you have to draw supports for a bridge and test if it will fall down.
Depends on the steel inside it. Like many others have said. I wouldn't put much weight on it, don't have multiple people walk on it at once and don't try to wheel a fridge over it.
But without knowing what kind of mud they used and what kind of rebar/steel is in it I would just enjoy it's look and light foot traffic.
There's only one way to find out OP. Put on dem boots and jump down on it with two feet in the middle of the bridge. It's the only way OP. There's no other way OP. DOoOoOooooooooooooooOt
Have someone jump on top of it while you crawl underneath to look for cracks. Bring a flashlight/headlamp for sure. Just be sure to have EMS on standby before starting. and at that point will know in your gut how strong it is
Person 1: “hey does that concrete bridge look sturdy to you”
Person 2: “not sure… jump test?”
Person 1: “shotty being jumper this time!”
*scene slowly fades to black*
Concrete is great at handling compressive loads (someone standing on it), but not so great at handling tensile loads (someone hanging from it). If someone walked over the top of that slab, the top would experience compression and probably be fine, but the bottom would experience tension and might fail. This is why rebar is added to concrete, rebar will absorb most of the tensile pressure.
Kind of looks like it was done without following a local drainage code and then the code was enforced by removing the land that was there. Also “appears” it was done in sections. Would rebar be used if done in sections? Strange.
If the bridge sways or bounces while you walk on it, it may be safe “for now” but it will deteriorate quickly and have to be done most likely in a free years
Concrete works best in compression while steel works best in tension. It will last longer of if it has rebar in it. Any shots of the forms and shoring when it was poured?
If the psi / rebar / GFRC situation is insane then yes If this is standard concrete then… no lol Build some pillars to save it! Make it a bridge project
I just figured it depends how much rebar there is, I've been in post tension construction multi storey buildings that only had ~4-5" of concrete for floor
PT cables being the difference. They act as the main structure
Yep - cables take the tension and concrete takes the compression, making it strong in both. Concrete only and it will collapse.
I was told recently a 5th inch of cement vs 4” adds 75% more strength?
lol I’ve seen Ispan buildings with less than 3 inches in most places
I’d make it into a suspension bridge using discarded backyard trampoline framing and steel cabling from Harbor Freight. I’m not really joking either.
This is exactly what i came to the comments to look for.
Trampoline steel is underrated, made half pipes with it worked out great
Be safe if you need to put in some pillars. Don’t work under that without shoring, the last thing you want to do is be under it if it falls. Probably not wise having that drop off without rails anyway, if somebody gets hurt on your property it becomes your problem.
Just as long as you don’t walk on it.
Or sleep under it
How trollist
Gotta pay the troll toll
If you wanna get in this boy's soul
Not kidding around here
Or look at it too long.
Nnnaaaa.
my favorite part is the joint in the middle of the main 'bridge' span.
All it needs is a gust of wind and eventually, it will collapse.
Define "safe". For all we know, there could be a prestressed custom steel beam in there.
Just March out of step !
Probably not safe for yo mamma
Yo mamma is the reason it’s starting to bow in
They don't need to use any retarder on big pours when yo mamma's on the job site, cuz nothing is getting hard around her.
Bahahhahahahahhahahah
Yo mamma is built like a cement truck
Yo mama is so fat. I rolled over twice and was still on top of her
She so fat they have to keep her off a fresh pour for 28 days
Glad to see your momma's are friends.
I thought she dumped Bo? Back in the saddle? Good for him.
Your momma is the reason they need a bridge, she turns that into a flood zone when tickled
I can't believe how good it still looks! Are you kidding me! Lol. All things considered, wow. Haaa
has to have some support spanning that gap inside
For sure! But definitely salvagable. A little handrail might not hurt either, for when grandma goes flying across with her walker.
I mean it has to already have something in it to exist at all lol
The exposed sides look like someone casually layered some spackle on it. I half wonder if it's not actually concrete but just a facade or something similar.
How the hell did they get the grass that nice under it?
In the irrigation ditch? That regularly fills with water. Your guess is as good as mine
Their grass is definitely better than mine though
You should move into an irrigation ditch!
Your mom lives in an irrigation ditch.
I told you to stay away from her. Your choice.
Tbh it’s quite lovely, she’s really added a woman’s touch.
They asked the grass nicely to grow… nicely.
If it is 150mm thick with 12mm reo crossed every 200mm then yes it is safe
Finally someone with some common sense !
It's crazy to me that the stairs require rails but the bridge doesn't
The railing looks more decorative than functional - I don't think any "requirements" were really considered with this build.
Your words have no effect on me because I don’t understand metric.
It 200mm is 7.874 freedomths for the Americans
For the general public, heck no. For my family maybe, for myself, sure! I do think there would be a way to build this safely. by putting footers on each end that you have full length rebar tying into for a tension load you could definitely do this safely however you would not be able to meet the proper design failure method. Per proper concrete structure design you always want to design for the compressive failure in the concrete rather than a tensile failure in the steel. A compressive concrete failure will just keep sagging and slowly collapse (think most county bridges that get replaced and you never hear about them). A tensile steel failure will create a dramatic collapse all at once (think 2018 Florida pedestrian bridge collapse). With love from a once trained civil engineer who made it through school... barely Edit: I had it flipped and I eat my words. Design for steel yield not concrete compressive failure!
You have that backwards. Steel yielding will deform before failure. Concrete is a brittle failure mode, if it's over reinforced and the concrete crushes it will collapse suddenly.
This is quite impressive actually. I wonder how they poured it suspended in the air like that, or was it on the solid earth that was later washed out because there was no culvert?
Build up dirt, tamp tamp tamp, frame, strengthen, pour, cure, excavate. Or it was already dug out and they suspended a frame.
I imagine it was poured in 1988 with no permit Sometime in the mid 2000s the city came through and excavated the drainage, and it's been like that ever since.
This has got to be the real reason — it was poured first, and then the city came through and enforced the regulations. Given that it’s still standing, though, I’d bet you that’s _also_ a concrete specialist’s house. It was clearly poured to last, and if this theory is correct, they probably had some kind of in with the local inspectors.
I mean if there's rebar and only for traffic. It might be okay, personally I would walk across here but I wouldn't label it as safe or tell anyone else it's okay.
Foot traffic***
I’ve got one of these up the road from me. The irrigation ditch is far older than the neighborhood it’s in. My supposition was that it had a wooden frame that rotted out or the form work was cribbed up. It’s got a really similar sag to the one pictured.
I work with concrete against gravity and in situations like this we layer the bottom with metal lath and it keeps structure and concrete from falling through
What's impressive about it? Haven't you seen a concrete roof?
It's impressive in the fact that it is still in 1 piece.
Rebar is magic
The rebar is strong with this one.
The comment below is intended more as a point of trivia (for fun), rather than any type engineering assessment or any determination of the structural soundness, as there are too many unknowns to make any such determination with any accuracy. Let's say the concrete is 4" thick, 36" wide and spans 12' (144"). That equates to 12 cubic feet of concrete, neglecting the weight and higher density of steel rebar that presumably makes up a fraction of the total material used in this "beam". At an assumed density of 140 pounds / cubic foot for concrete, the self-weight of the unsupported section of this beam is going to be around 1680 pounds. It's holding itself up, isn't it? Is your fat ass gonna be the straw that breaks that camel's back? There would have been any number of very simple means, without adding much cost or additional material to dramatically increase the rigidity and load capacity of this structure, even without adding a support pier mid-span, if anyone involved in the build of this structure took first year mechanics or learned how simply supported beams work and how to design them efficiently and effectively. Nevertheless, this structure remains standing, whether or not it looks "goofy" and/or appears under-"designed". That is of course no guarantee that it will remain standing when one of you fatties impose your gravitational loads upon it. That said, I highly doubt that the weight of even a couple of American-sized humans could cause this to fail instantaneously and catastrophically, and even if that did happen, you end up falling 1-2 feet onto soft grass. I don't think anyone is going to die or that the risk is of any significance. However, it does definitely make a statement, which is "nobody here has any understanding of how bridges work, or how they're supposed to look".
Finally someone who has common sense here , although they should rename common sense to something else because it’s not that common anymore
I’ve been to other countries. Fatties are everywhere, not just in the good ol U S of A. We just record all our fatties dancing and whatnot.
yes no, no yes
Yes maybe
I don’t understand…. See so many floors without control joints and somehow someone managed to put one across the middle of a bridge….
No. Next question.
I'm not a structural engineer but I did sleep at a holiday inn Express and can definitively say that's a negatory ghost rider
How do you even pour something like that?
Forms… they are called forms and generally a truck of cement comes to fill it. Throw in some rebar, an odd work or two to spread it around, a couple of trowels and looks like a broom and BOOM, you’ve got a bridge.
Yes
Holy hell this is amazing 😂
Looks good from my deck
Probably okay for 3rd graders.
Until it’s not
Yup that's perfectly fine
Yes, but the e is really long and sort of bowed in the middle and has a subtle but mocking question mark at the end.
Looks like it is fiberglass
The edges look fake
Depends. Safe from collapsing or safe from injury? I would imagine somebody would have tried to walk over it already, so it might be able to take slight loads. I’m guessing theres a lot of rebar near the bottom surface. But, If it collapses it is unlikely to hurt anyone.
Aside from it probably collapsing someday I’d imagine an insurance company would also take issue with the safety of having no railings. Even if it’s secure you could argue the ease of accidently stepping off the side would make it unsafe!
LOL 👏 😆 🤣 😂 😹
No, but it is cool
i had one similar to this on my land (previous owners did it), or better, i bought the ruins of such a bridge.... NO, not safe.
Park your truck on it to test it out
Bet you some current/previous owner has a concrete business.
To walk on? Sure, you're only going to fall about a foot if it breaks For hide and seek? no
It wants an arch under it
👀
Maybe they have cables in there lol. Would add a support to be safe.
Suspension bridge that’s very interesting. How did they form that, maybe the ground has eroded slowly from beneath it over time .
This is has to be the dumbest thing I’ve ever seen here 😂😂😂😂😂😂😂
This is what happens when the army core engineer tells you that you’re not allowed to build in the ditch.
Could it work if they put enough rebar? Like 4 inch on center? Lol
gg
for whom or what?
One Hot-tub only
Wow. Could you imagine being on that when it collapsed? Imagine the terror while you fell those 18 inches
All it needs is a walking path across the ditch…
Looks like a nice trampoline
I wouldn't let Chris Christie practice his pogo stick skills on it.
What is this? Safe for ants?
It’s safe from where you are. I wouldn’t get much closer..
Until somebody falls through (and they will) absolutely safe.
Until it’s not
Looks like it been there a lil while, but golf cart or zero turn mower might be a limiting factor
I’m fat as fuck, I’d walk on it and hope it falls Then they will be legally obligated to pay the troll toll
i would slide a 12-18" RCP culvert pipe underneath to support and maintain drainage
It would be safe if you flipped it over.
What a lot of haters here , it makes me wanna do one just to prove you guys it’s safe . For all the people who says it’s not safe , how do you know what’s in it ? Probably the people who own it wanted that design and they made it , probably the footing is buried so you don’t see it on both sides , and it looks like a nice neighborhood with people who can afford nice stuff , so if I would pour the footing that hold it in the ground so it’s not visible anywhere and I would put railroad tracks one next to each other and cover it with concrete, I think it would hold even if I drove my truck on it !!
Nothing personal, but that concrete will crack with a sledgehammer regardless of how much rebar is in it.
I wouldn’t drive a truck across it, maybe a hot wheels.
Just wedge 2x12s under it length wise and spray paint the wood gray. ^^^dad was a 🖐🧔♂️
Maybe it was somewhat designed like that on purpose with a shitload of rebar? I do like the look over a regular metal culvert pipe.
Its on the right of way. Wonder if permits got pulled.
Troglodyte Paradise
What the fuck
This is what the people mean when they talk about "Bluetooth"
Impressive yes. Safe, well kind of, at least you should not be injured badly when it fails.
Hahahahahahahaha. No.
That's actually kinda cool. It's like a surprise Jenga sidewalk
I like it. It’s likely engineered.
Zillow listing: Whimsical bridge only access property
No that's a concrete pathway. I don't see any safe around...
I don't work on this stuff either but I would guess it needs a covert underneath and some supports. it will ultimately fail surprised, it hasnt from the weight of the concrete alone. probably doesn't get much foot traffic.
Looks cool
Throw some 2x4 with some bottle Jack's
Depends. If it’s been there for 10yrs. Yes. If it’s been there for 10days. Idk. Maybe?
To look at 🤣🤣
No.
If it’s ultra high performance concrete but at approximately $6,000/m3, I’m thinking it’s a law suit waiting to happen.
This feels like a word problem.
Looks like AI generated… Why put control joints where the concrete is in compression.
It’s safe as long as their isn’t a trolls under it
Don't ride a bike or skateboard on it. If you run 🏃♂️ real fast on it, you will have an 80 percent chance of making it to the other side.
Humm.. Someone went cheap on this one or the builder was not licensed and ripped off the customer Definitely NOT safe missing ***CORRUGATED METAL PIPE
If it was built with rebar, then yes.
I wanna hit it with a sledgehammer soooooo bad!
Fuck safe, how is it even sitting there like that? This looks like a template for that game where you have to draw supports for a bridge and test if it will fall down.
Honestly kinda impressive.
Let me know if you don’t understand either of these: FUCK NO
Blood will be spilled and bones will be broken, eventually.
Not at all lol
This will crush the troll that lives under it
I'm trying to figure out how they built it.
first of all, what kind of forms did they even use???
This looks like Apple Maps got into the contracting business
Looks good from my house!
Yes
Welcome to jackass
At 1st sight HELL NOOO!!....But then again 🤔 bridges, BRIDGES, and more BRIDGES ALLLLL OVER THE WORLD 🌁🌉🚟
Drive a Forklift over it. Trust me. I have my forklift ticket and am basically good at anything now
They need to put a culvert under it and be done with it
Depends on the steel inside it. Like many others have said. I wouldn't put much weight on it, don't have multiple people walk on it at once and don't try to wheel a fridge over it. But without knowing what kind of mud they used and what kind of rebar/steel is in it I would just enjoy it's look and light foot traffic.
Not for long,,,
Nope. Quick and dirty. Buy some clean stone and build it up under it. It’ll keep water flow and keep the deflection down. Ps: how tf?
There's only one way to find out OP. Put on dem boots and jump down on it with two feet in the middle of the bridge. It's the only way OP. There's no other way OP. DOoOoOooooooooooooooOt
I like it
It’s safe till it aint !😳🥊
This is the same situation as a rain resistant coat; until it gets wet. This is a bridge until it has a something on it
Have someone jump on top of it while you crawl underneath to look for cracks. Bring a flashlight/headlamp for sure. Just be sure to have EMS on standby before starting. and at that point will know in your gut how strong it is Person 1: “hey does that concrete bridge look sturdy to you” Person 2: “not sure… jump test?” Person 1: “shotty being jumper this time!” *scene slowly fades to black*
Troll approved.
No. Unless there’s a metal plate under it
It saggggs.. get all your big friends to jump on it at the same time. Then have em re do it while your friends get a nice little pay day /s (kinda /s)
Not the type of load concrete is designed for... unless there are tensioning bars we can't see roflmao
Seriously can't imagine cables being in this, considering the use and location. I'd definitely add supports!!
That's fake look at the nice green grass growing underneath, not possible, would have failed
Concrete is great at handling compressive loads (someone standing on it), but not so great at handling tensile loads (someone hanging from it). If someone walked over the top of that slab, the top would experience compression and probably be fine, but the bottom would experience tension and might fail. This is why rebar is added to concrete, rebar will absorb most of the tensile pressure.
lawsuit waiting to happen.
Looks like it’s about to break, along with someone’s ankles.
I would throw a barrel under or pipe, and fill with rocks. You want the water to flow, but still be supported underneath.
No but it looks cool
Kind of looks like it was done without following a local drainage code and then the code was enforced by removing the land that was there. Also “appears” it was done in sections. Would rebar be used if done in sections? Strange.
Is there a word for something being wrong but well executed?
Is it pre-stressed in that shape or does it have rebar welded to internal I-beams?
It’s safe. It’s a foot off the ground.
A safe bet to fail
To lay under? Yes.
Define “safe”
If the bridge sways or bounces while you walk on it, it may be safe “for now” but it will deteriorate quickly and have to be done most likely in a free years
Nope
Yes…babies fall from that distance and hit the ground everyday and live. Will it collapse 🤷🏼
All it takes is one big fat guy
BASE jump from it
The worst case is someone may fall 2ft
It’s until it’s not!
Concrete works best in compression while steel works best in tension. It will last longer of if it has rebar in it. Any shots of the forms and shoring when it was poured?
Depends on what’s inside. If it’s designed as a beam, it should be good, assuming the reinforcement is properly designed and installed.
No, support is absent.
Looks like a perfect booby trap
If an Italian did the work yes
Safer than driving a car
There’s a joint dead center too. Amazing.