I sadly don't have the picture anymore. There was a better ad for windows and their installer that happened in Grand Rapids, Michigan some years ago. Water line went fully above the window, and there was a fish happily swimming by. Carpet was completely dry.
Sounds awfully a lot like my cat... rain pissing outside, lightning trying to destroy earth itself, thunder making my undies shiver off my ass & grass drowning from all the rain yet my dumbass cat yelling loud enough city next to mine far away can hear her wanting to go outside...
Hard to tell what this place is, however many office buildings, hotels will withstand this. Google "Grand Rapids Flood 2013" then look at images. You will see photos of fish and stuff swimming by office windows downtown.
It's more than possible to do it, but a lotta standard installs, especially those done to base code in high and dry areas, will have the frame fail under that much pressure.
Hardware store or Amazon sells slide on thresholds for the bottoms of doors. Might even have a channel on the bottom. You can pop the hinge pins up from the bottom of the hinges with a Phillips screwdriver and flip the door over to check. My front door is stupid old and I had to find one close enough and screw it on, but the back door actually has a channel to snap in.
I understand water pressure a little bit from working with aquariums. It's been a few years, isn't the force of water that deep massive, or is it offset by the absence of "a back wall" that I would otherwise have in an enclosed environment?
Fellow imgurian with only basic water pressure knowledge here, I believe the metal frames are helping a lot here, probably preventing the glass from flexing from the pressure. I'd guess the panes are pretty thick top, because that looks like an imperial fuckton of pressure from all that water.
Hydrostatic pressure at a point is due to the weight of the water above it. It can rise quickly due to depth because water is heavy, but a back wall wouldn't have an effect.
Back walls don't have an effect, because in the case of no back wall, the water where the back wall would be takes the place of the back wall. Basically, anything that's preventing the water from flowing away is equivalent, and even with the water flowing away, while the water is there, it's still inflicting that weight on the windows until it flows away by virtue of the water not being able to flow through the glass.
That looks to be about 1m of water so it'd have a pressure of about 0.1atm or 1.5psi or 10kPa. Every square foot of glass would "feel" 216lbs (98kg) of pressure. I know more about water pressure than glass strength so I have no idea if that's a lot. Certainly it depends on the thickness of the glass and I'm sure other factors as well. A "back wall" has nothing to do with it.
Oops, I forgot to account for the fact that there's a gradient in pressure. So at the bottom of the window it'd "feel" 1.5psi. Towards the top it would be near atmospheric pressure. You'd have to integrate over the pressure function to calculate the total force against the window. It'd be a fun simple calculus problem.
The thing with glass is that it's surprisingly strong against universally applied ( in this case compressive) force, it's just fragile to concentrated impacts. In cases like this it's often not the windows that fail, but the frame they're set in. Ofc, a flood causing a piece of debris to hit the window would be a different matter.
As others have said, water pressure depends only on depth. What nobody has said that I see, and it's critical, static pressure is always equal in all directions. The pressure at the top is atmospheric pressure only. The pressure at the bottom is, let's estimate that's 3 feet deep, the one atmosphere of air on top of it (but that's also behind it, so it cancels out) plus the weight of the water above, topping out at roughly 1.5 psi of pressure all the way at the bottom. (1/n)
But remember, it's 1.5 psi in all directions. Every square inch of the bottom of that window is supporting 1.5 psi more on the wet side than the dry side. Do you think you could put a 1.5 lb. weight with a 1" square footprint on a piece of glass without it breaking? Easily! And the higher up you go, the less the weight on that square inch will be. Now, will the whole structure fail? Every square inch of the bottom is supported by the metal strip at the bottom, which itself is (2/n)
supported by the foundation below it. It gets more complicated higher, because the weight on the higher square inches sort of flows outwards. So they're supported not just by the square inch below, that's supported by the metal bar, but by the square inches to the side. They in turn are supported by the square inches even farther to the side, and so on, until you get to the metal uprights of the window. And, to the square inches above each one, until you reach the metal strip at the (3/n)
top So, to model this you can think of laying it on its side, supported just by a box touching it around the edges. You need a row of 1" square weights, weighing 1.5 lbs. each, across the bottom. Just "up" from them, 1" weights weighing just a bit less, and "up" from them, 1" weights weight even a bit less still, and so on, tapering until at the waterline you are putting paper-thin coins on it. What you notice is that the lever arm of each weight to the bottom is larger, but the (4/n)
weight is also less, the farther it is. Most of the stress comes from the water very close to the bottom, where it has very little lever arm to break the metal/window bond. And it's not really all that much. It's not holding back miles of water all the way back to the water's end, it's holding back about 1.5 lbs. on every square inch, at most, right at the bottom edge. What's holding up the rest of the water? The ground under it, and the other water pushing with equal pressure behind. (5/5)
Water pressure is purely dependent on the depth of said water. For approximately every 2.3 ft of water there is 1 PSI of pressure. That's one pound of force acting against each square inch. Those are big windows, and the water looks deeper than 2.3 ft, so I'd guess a rough ballpark estimate of thousands of pounds of force in this picture. Definitely impressive windows.
Right but is the pressure you're referring to only applied to things being "squished" by water from all sides (Titanic sub), or does it also apply to things only being affected by water pressure from 1 side? Im not very smart.
It applies to pressure from one side. Imagine if there were no frames there and you had to hold the glass in place. You'd feel a lot of pressure. Also don't say you're not smart. You don't know something and are asking questions. Nothing wrong with that.
Would that number be uniform for the entire window, though? If the pressure depends on the depth of the water, wouldn't that be the pressure at the bottom of the window? As you go up the window the pressure on the window would be less? (I have no clue how this works.)
BehGehBeeeehh
Okay, but what about the doors?
SterlingArcherSecretAgent
I've been on the inside of a similar situation once. ...in a room full of servers, scrambling to get them all shutdown and moved to safety!
taurondir
What I don't understand is, water goes AROUND everything, so either all other entry points are waterproof or something weird is going on here.
Solkanarmy
I'd suggest a second ad with their name and contact details on it, actually
kepattRunner
This reminds me of Parasite
Koskun
I sadly don't have the picture anymore. There was a better ad for windows and their installer that happened in Grand Rapids, Michigan some years ago. Water line went fully above the window, and there was a fish happily swimming by. Carpet was completely dry.
chichiFregiLover
i hesitate between Florida, and Australia
TheMomaw
"What sort of windows are you interested in? Classic multipane? Triple glazing? Inside-opening for easy cleaning?" "Submersible." "Will do."
slightskew
*Dumbass cat still yowling to go out
dentista320
Well naturally, since the cat is already inside.
VanessaBludgeons
I'm just gonna swim on over to Lisa's flat. We never miss Grey's Anatomy.
MediocreExtremist
It saw a fishy swim by
Snezko
Sounds awfully a lot like my cat... rain pissing outside, lightning trying to destroy earth itself, thunder making my undies shiver off my ass & grass drowning from all the rain yet my dumbass cat yelling loud enough city next to mine far away can hear her wanting to go outside...
Northwindlowlander
Tank needs cleaning
Soultrain420
I see you opted to install the outdoor fish tank. Weird flex, but you do you, mkay!
bound4doom
Hard to tell what this place is, however many office buildings, hotels will withstand this. Google "Grand Rapids Flood 2013" then look at images. You will see photos of fish and stuff swimming by office windows downtown.
HiddenSanity
It's more than possible to do it, but a lotta standard installs, especially those done to base code in high and dry areas, will have the frame fail under that much pressure.
CleanGarage
It is the lower level of. condo building in Naples Florida during Hurricane Ian.
EveryUsernameIsTaken4
meanwhile I get a lake in my living room whenver it rains with mild winds. Water just slides in like mail under the door. No resistence!
DdCno1
Have you tried doing anything about it?
EveryUsernameIsTaken4
We just built this house and there's a lot of stuff to do still. But it's on the list. For now we just put some towels under it when it rains
Gibleteousjack
Hardware store or Amazon sells slide on thresholds for the bottoms of doors. Might even have a channel on the bottom. You can pop the hinge pins up from the bottom of the hinges with a Phillips screwdriver and flip the door over to check. My front door is stupid old and I had to find one close enough and screw it on, but the back door actually has a channel to snap in.
Tigersterne
Transparent aluminum?!
ruint
if you're ever there, don't be.
RummageSaleBubbler
Plot twist, is aquarium installer.
BananaForScaIe
Who should be promoted to window installer.
mikeatike
They are a window installer. Just really really secure windows that don't open.
apollo1983
Plot twist. The window installer invented transparent aluminum.
Nugarwrites
Transparent aluminum already exists. Clear sapphire is transparent aluminum. Tough and strong and scratch resistant. Sapphire is aluminum oxide.
mikeatike
RUBeastN
I mean he could have used Aluminosilicate glass
Drix1942
DdCno1
This looks familiar. What was this from again? Thanks!
Drix1942
https://en.wikipedia.org/wiki/The_Life_and_Times_of_Scrooge_McDuck
DdCno1
I knew it! Thank you!
Drix1942
I looked for the page; it's in "The Buckaroo of The Badlands."
Filanwizard
when your windows are rated for a cat 5 and installed properly.
GasBandit
Not enough bandwidth, I need Cat 5e at least, preferably Cat 6 with shielded terminations!
Jinxies
Hmm, think I'll call in sick today.
caerulakid
Your boss definitely is gonna tell you to come in.
Jinxies
I'll tell him to swim over and kiss my ass.
lowerider777
Imagine seeing a gator swim by in that
Joyika
Squint and no imagination needed:)
q2grapple
Or a shark just sitting there, staring in the window at you
lazyarmadillo
Fun fact: most sharks can’t stay stationary, they have to be mobile in order to breathe
SteveTheEgg
That is why they menacingly circle.
BranDohCalrissian
Kind of inspiring, no? In a "rolling stone," "never stop moving forward" kind of way.
Jagernot
They even held all the way through the flood. Here they are, still hale and hearty, after everything drained.
cylogenix
wasn't entirely waterproof elsewhere though - the floor is wet there.
mikeatike
They forgot to lock the door.
CleanGarage
There is a set of entry doors just to the left of the windows that allowed the water in (my mother-in-law has a condo in this building).
mercbrit
Duck tape.
encyclopediabritannica
I understand water pressure a little bit from working with aquariums. It's been a few years, isn't the force of water that deep massive, or is it offset by the absence of "a back wall" that I would otherwise have in an enclosed environment?
goboltz
"Water. . uh, Finds a Way" !
LyingForFakeInternetPoints
I also understand water pressure only a little bit but yeah I think that would be an astounding pressure on those windows
digitalaaronscustoms
Fellow imgurian with only basic water pressure knowledge here, I believe the metal frames are helping a lot here, probably preventing the glass from flexing from the pressure. I'd guess the panes are pretty thick top, because that looks like an imperial fuckton of pressure from all that water.
potatoispeople
Fellow person of basic physics knowledge here. First thought looking at the picture: I would not be standing there taking that picture.
eclipse127
Hydrostatic pressure at a point is due to the weight of the water above it. It can rise quickly due to depth because water is heavy, but a back wall wouldn't have an effect.
gelos
Ofc it has effect, but it needs to be close enough to effect the weight of the water affecting the window.
babybirdhome
Back walls don't have an effect, because in the case of no back wall, the water where the back wall would be takes the place of the back wall. Basically, anything that's preventing the water from flowing away is equivalent, and even with the water flowing away, while the water is there, it's still inflicting that weight on the windows until it flows away by virtue of the water not being able to flow through the glass.
gelos
Ofc it has effect, but it needs to be close enough to effect the weight of the water affecting the window.
Geek13
3.5 ft of water at 62.4 pounds per cubic foot = 218.4 pounds per square foot of pressure. Or 1.5 pounds per square inch.
mikasaur
That looks to be about 1m of water so it'd have a pressure of about 0.1atm or 1.5psi or 10kPa. Every square foot of glass would "feel" 216lbs (98kg) of pressure. I know more about water pressure than glass strength so I have no idea if that's a lot. Certainly it depends on the thickness of the glass and I'm sure other factors as well. A "back wall" has nothing to do with it.
mikasaur
Oops, I forgot to account for the fact that there's a gradient in pressure. So at the bottom of the window it'd "feel" 1.5psi. Towards the top it would be near atmospheric pressure. You'd have to integrate over the pressure function to calculate the total force against the window. It'd be a fun simple calculus problem.
Ivain
The thing with glass is that it's surprisingly strong against universally applied ( in this case compressive) force, it's just fragile to concentrated impacts. In cases like this it's often not the windows that fail, but the frame they're set in. Ofc, a flood causing a piece of debris to hit the window would be a different matter.
OliverOtter
As others have said, water pressure depends only on depth. What nobody has said that I see, and it's critical, static pressure is always equal in all directions. The pressure at the top is atmospheric pressure only. The pressure at the bottom is, let's estimate that's 3 feet deep, the one atmosphere of air on top of it (but that's also behind it, so it cancels out) plus the weight of the water above, topping out at roughly 1.5 psi of pressure all the way at the bottom. (1/n)
OliverOtter
But remember, it's 1.5 psi in all directions. Every square inch of the bottom of that window is supporting 1.5 psi more on the wet side than the dry side. Do you think you could put a 1.5 lb. weight with a 1" square footprint on a piece of glass without it breaking? Easily! And the higher up you go, the less the weight on that square inch will be. Now, will the whole structure fail? Every square inch of the bottom is supported by the metal strip at the bottom, which itself is (2/n)
OliverOtter
supported by the foundation below it. It gets more complicated higher, because the weight on the higher square inches sort of flows outwards. So they're supported not just by the square inch below, that's supported by the metal bar, but by the square inches to the side. They in turn are supported by the square inches even farther to the side, and so on, until you get to the metal uprights of the window. And, to the square inches above each one, until you reach the metal strip at the (3/n)
OliverOtter
top So, to model this you can think of laying it on its side, supported just by a box touching it around the edges. You need a row of 1" square weights, weighing 1.5 lbs. each, across the bottom. Just "up" from them, 1" weights weighing just a bit less, and "up" from them, 1" weights weight even a bit less still, and so on, tapering until at the waterline you are putting paper-thin coins on it. What you notice is that the lever arm of each weight to the bottom is larger, but the (4/n)
OliverOtter
weight is also less, the farther it is. Most of the stress comes from the water very close to the bottom, where it has very little lever arm to break the metal/window bond. And it's not really all that much. It's not holding back miles of water all the way back to the water's end, it's holding back about 1.5 lbs. on every square inch, at most, right at the bottom edge. What's holding up the rest of the water? The ground under it, and the other water pushing with equal pressure behind. (5/5)
VulpesIncendium
Water pressure is purely dependent on the depth of said water. For approximately every 2.3 ft of water there is 1 PSI of pressure. That's one pound of force acting against each square inch. Those are big windows, and the water looks deeper than 2.3 ft, so I'd guess a rough ballpark estimate of thousands of pounds of force in this picture. Definitely impressive windows.
BranDohCalrissian
Right but is the pressure you're referring to only applied to things being "squished" by water from all sides (Titanic sub), or does it also apply to things only being affected by water pressure from 1 side? Im not very smart.
mikasaur
It applies to pressure from one side. Imagine if there were no frames there and you had to hold the glass in place. You'd feel a lot of pressure. Also don't say you're not smart. You don't know something and are asking questions. Nothing wrong with that.
TheMysteriousTraveller
Would that number be uniform for the entire window, though? If the pressure depends on the depth of the water, wouldn't that be the pressure at the bottom of the window? As you go up the window the pressure on the window would be less? (I have no clue how this works.)
VulpesIncendium
Yes, there's a pressure gradient where it will be strongest at the bottom edge and almost non-existent at the top.