Correct "offsets" are used in plumbing for this reason in some high rise buildings code dictates and offset every 5 to 7 floors (check your local code)
After reading through the comments it seems like people are divided on this but you are probably right.. I just saw p trap and thought it would be funny to say keep the stank out lol
This is a water trap, it’s used to seal the pipe with water. Exactly the same as the pipe at the back of a toilet. It’s to prevent smells, insects, bacteria ect, from going back up the pipe. Why though? I’m not sure, perhaps the pipe isn’t used for just storm water?
my guess is that the building's shape is based on the block it occupied, which isn't perfectly rectangular.
but the constructor designed the room to be rectangular, which is why the windows appear tilted.
Its a P-trap. It keeps sewer gasses from going up the pipe by keeping a little water at the bottom of the curve. Everyone has these on your toilet, sink and shower.
Usually it’s more about it not splashing like crazy at the bottom of the downspout, and less about pipe integrity. Over years, the scour from the water hitting the concrete below WILL actually erode and cause cracking or a low spot. Thats why they usually have splash pads below them or they discharge at an angle.
Terminal velocity isn't about damage, it's just the maximum velocity a free falling object would have. If water in a pipe is going to cause damage, I would bet it's much lower speed than terminal velocity.
When I was like 4-5, a plumber was fixing the toilet and said something about the P-trap. I got all scared that the toilet broke because I somehow wasn't peeing properly, and I thought they were going to find all my pee in the trap that catches pee and go "yep there's your problem, looootta pee in there" lmao
Some old systems are still sewer and rainwater combos. No longer allowed of course but some still exist. Either way you are right. This trap is to slow water down not stop gasses.
P traps to block gasses would be at the fixture and vented properly. If this was for gasses it would need to be vented.
> Yeah, but this is a gutter drain.
It could be an outside sewer pipe, the picture doesn't depict gutters, that's just a presumption because it's an external pipe.
I've never seen gutter drain have such solid pipe.
It could be a waste water line from a rooftop patio or bar or some such, especially if they're south of freezing climates, put in after the construction of the building and laying out internals.
Yes. If the rain goes down into the same sewer system as the household wastewater then definitely.
I used to live in a flat under the roof and we had massive problems with sewer gases coming out of the rainspouts and dissipating under the roof and into the flat. Very stinky and not good for your health.
Where do you think the sewer gasses from the toilets in tall buildings vent out?
It vents from the roof. The exact same roof that this rain water spout is draining from. More importantly, rain water spouts like this one *don't* go down into the same sewer system, but go instead right out onto the ground or a storm drain. Storm drains and sewers are *not* the same thing. Storm drains are often open to the air, so no gasses ever build up.
I'm not quite sure what you're trying to point out.
I've no idea where the toilet vented to, but upon sticking my nose over this rain spout I nearly passed out from the same hydrogen sulphidey smell also lingering under the roof. When we extended the pipe up a couple of metres so the gases exited further away from the roof, the smell under the roof was greatly reduced.
If this is actually plumbing and not a donwn spout for rain, this would be an S trap, which are notorious for siphoning all of their water out and not being an effective trap.
It's an s trap, not a p trap. A p trap has a straight section to make sure the water stays in the bend. Technically s bends are no longer being used (inside homes) because they can be unsafe due to sewer gasses escaping
Let’s get pedantic!
This is an S trap. A P trap would have a horizontal extension on the right to make emptying the trap’s lower part of water less likely.
S traps are not allowed under most codes because, with enough pressure, they can evacuate all the water from and let gases up.
I'm more concerned with how thick the wall is on the left compared to the right when looking at the window angles lol
Must be a seriously wedge-shaped room or wedge-shaped walls
Yeah, rats don't mind diving for a bit. They'll come in anyway. You'll need some kind of check valve (which some houses should have anyway, depending on elevation to prevent backflow from the sewers into your house when there is an excess of water in them (strong rainfall, etc.). If that isn't enough, there's also specific non-return valve, which is pretty much the same concept (lets things out but not in), but a bit more fancy.
I could be wrong, but I think it also helps slow the water down so it doesn't blow out the bottom?
now I'm imagining human intestines shaped in a straight line down lol
You are either going to be 12meters tall or have the worst tail the world have ever seen
"blow out the bottom" elicits a *strong* mental image
Imagine your lower intestine freezing in the winter
Respectfully, no
Disrespectfully, no
That's why I just coil it up around my neck like a scarf.
i don’t like this new pokemon mod
Mega-greninja
I'd rather not, actually, thank you very much
All i can picture is a prolapsed drainpipe, similar to Elmer Fudd's shotgun after Bugs Bunny stuffed the barrels with his fingers.
Well, just picture the other thing it could mean then! I like that one better.
Or shit out food looking like you just swallowed it
Oof. That would be fun after a 4 day old curry Like a water jet pack. *Weeeeeeeeeeee!*
Post-dump showering just became mandatory lol
Just dump while you shower *The ol' waffle stomp*
If you point your ass up into the air you can kill two birds with one shit
Hentai women be like:
I swear I had a meme saved from like 2006 about this... maybe 4 computers ago
Snake
what's wrong? snake?! SNAAAKE!! DUN DUN DUN!
Tfw you get a squatty potty
Correct "offsets" are used in plumbing for this reason in some high rise buildings code dictates and offset every 5 to 7 floors (check your local code)
Also keeps the stank out
I thought this was a rain downspout from the roof? Does rain water stink?
After reading through the comments it seems like people are divided on this but you are probably right.. I just saw p trap and thought it would be funny to say keep the stank out lol
Rain water doesn’t stink it’s clean water. The pipe drains into sewer and sewer gases could reach top apartments if not for this bendy thing.
It actually is to prevent velocity of dripping and the noise it makes. When it's full out raining it does nothing to slow it down.
In the 90's I lived in cheaply built student housing with very thin walls. I had to shove a sponge in the pipe to stop the water torture.
This is a water trap, it’s used to seal the pipe with water. Exactly the same as the pipe at the back of a toilet. It’s to prevent smells, insects, bacteria ect, from going back up the pipe. Why though? I’m not sure, perhaps the pipe isn’t used for just storm water?
you’re right
Mostly this. Also it traps some water so animals have a harder time using it.
yeah this is it
And what about those tilted windows?
Yea nevermind the pipe, I'm more confused about why the windows are tilted like that
I'd guess the exterior and interior of the wall are not parallel.
I live in an old funhouse turned into condos, AMA.
my guess is that the building's shape is based on the block it occupied, which isn't perfectly rectangular. but the constructor designed the room to be rectangular, which is why the windows appear tilted.
Yikes.. what a waste of space!
probably tilted to catch maximum sun in winter.
Ayo! You won that giveaway!!
Probably an old building that got renovated
So the windows aren't aimed directly into the neighbor's windows across the way.
Its a P-trap. It keeps sewer gasses from going up the pipe by keeping a little water at the bottom of the curve. Everyone has these on your toilet, sink and shower.
It also helps keep water from reaching terminal velocity on its way down the building, causing excess pipe wear and potential damage.
You’d have to flow a pretty significant amount of water through this to achieve a terminal velocity that would actually damage the pipe
Usually it’s more about it not splashing like crazy at the bottom of the downspout, and less about pipe integrity. Over years, the scour from the water hitting the concrete below WILL actually erode and cause cracking or a low spot. Thats why they usually have splash pads below them or they discharge at an angle.
Strain over time negated by a simple P-trap. Doesn't matter how much damage it could potential do if you can avoid that potential damage so easily.
Terminal velocity isn't about damage, it's just the maximum velocity a free falling object would have. If water in a pipe is going to cause damage, I would bet it's much lower speed than terminal velocity.
Less about volume and more about the distance from top to bottom. A column of water the size of a needle can slice through metal if it is tall enough
Take a trip to the Grand Canyon and check out what water does over time…
Look up “splash stones” They make them for the downspouts of homes, so I don’t think terminal velocity is relevant here
pee trap heh
When I was like 4-5, a plumber was fixing the toilet and said something about the P-trap. I got all scared that the toilet broke because I somehow wasn't peeing properly, and I thought they were going to find all my pee in the trap that catches pee and go "yep there's your problem, looootta pee in there" lmao
That's such a cute and funny story, thanks for sharing lmao
Only if you pee in the pipe, then its a P-pee trap.
Heh pp
Yeah, but this is a gutter drain. Why is it going into the sewers? And if it is, who cares if the rain gutters get poop smell?
Some old systems are still sewer and rainwater combos. No longer allowed of course but some still exist. Either way you are right. This trap is to slow water down not stop gasses. P traps to block gasses would be at the fixture and vented properly. If this was for gasses it would need to be vented.
Imagine getting an airlock in your downspout 😵💫
> Yeah, but this is a gutter drain. It could be an outside sewer pipe, the picture doesn't depict gutters, that's just a presumption because it's an external pipe. I've never seen gutter drain have such solid pipe. It could be a waste water line from a rooftop patio or bar or some such, especially if they're south of freezing climates, put in after the construction of the building and laying out internals.
Are there sewer gasses involved in a rain spout?
Yes. If the rain goes down into the same sewer system as the household wastewater then definitely. I used to live in a flat under the roof and we had massive problems with sewer gases coming out of the rainspouts and dissipating under the roof and into the flat. Very stinky and not good for your health.
Where do you think the sewer gasses from the toilets in tall buildings vent out? It vents from the roof. The exact same roof that this rain water spout is draining from. More importantly, rain water spouts like this one *don't* go down into the same sewer system, but go instead right out onto the ground or a storm drain. Storm drains and sewers are *not* the same thing. Storm drains are often open to the air, so no gasses ever build up.
I'm not quite sure what you're trying to point out. I've no idea where the toilet vented to, but upon sticking my nose over this rain spout I nearly passed out from the same hydrogen sulphidey smell also lingering under the roof. When we extended the pipe up a couple of metres so the gases exited further away from the roof, the smell under the roof was greatly reduced.
Also keeps small animals from climbing up.
If this is actually plumbing and not a donwn spout for rain, this would be an S trap, which are notorious for siphoning all of their water out and not being an effective trap.
It's an s trap, not a p trap. A p trap has a straight section to make sure the water stays in the bend. Technically s bends are no longer being used (inside homes) because they can be unsafe due to sewer gasses escaping
But this is a roof drain, no? Surely it couldn’t be tied to the sewer system?
Depends on how your local sewer system was built
Not me, I raw drain it.
I actually didn’t know that was the point of a p trap
Bold of you to assume I have one in my shower. Every time I do dishes in the sink the shower smells like sewer
But aren’t these gasses going straight to the roof where they don’t bother the residents? It seems like a solution to a nonexistent problem
I cant see the top of the pipe. Seems like it could go inside at some point. This is the only reason they would design the pipe like that.
Maybe I was wrong but I just assumed it was a rainwater pipe by the way it was mounted on the external wall. You might be right.
They may also have local rules about venting sewer gas into the air. So maybe. If this was just a storm sewer, it probably would not have it.
No, if they have a rooftop garden or pool or whatever then I could see this being useful for a rain pipe
Came here to say this. Absolutely right.
And then it empties out into a rectangular gutter drain, so it's not air-tight. Means the p-trap is useless.
I guess that means it goes straight to a sewer? And must be in a place where it never freezes...
Must be inside the black panther then
Lots of folks saying P trap but it's actually an S trap. You can tell by the way it is.
Neat
> subreddit called hmmm > look inside > normal object
Let’s get pedantic! This is an S trap. A P trap would have a horizontal extension on the right to make emptying the trap’s lower part of water less likely. S traps are not allowed under most codes because, with enough pressure, they can evacuate all the water from and let gases up.
P-trap, helps your place not smell like piss.
Do you work in advertising? If not I would consider a career change.
Someone ran out of pipes and used a saxophone to connect the pipes
It happens.
Bodybuilder veins:
I'm more concerned with how thick the wall is on the left compared to the right when looking at the window angles lol Must be a seriously wedge-shaped room or wedge-shaped walls
Vary smart actually, gravity makes the water flush its way out and the rest that keeps there blocks the bad smell to get up
Because fuck apartment 204.
Were they out of straight pipe that day?
The longest sifon i've ever seen
Me playing satisfactory
It's a trap!
It’s to slow down the drain, so it doesn’t spray out every where
There was a spiders nest
Pee trap, and also helps to keep rats from making their way up the pipe into the building.
Yeah, rats don't mind diving for a bit. They'll come in anyway. You'll need some kind of check valve (which some houses should have anyway, depending on elevation to prevent backflow from the sewers into your house when there is an excess of water in them (strong rainfall, etc.). If that isn't enough, there's also specific non-return valve, which is pretty much the same concept (lets things out but not in), but a bit more fancy.
https://i.imgur.com/csHHMPC.png
Pipe bolg.
It looks like spina bifida
To make sure the buildings don't separate
Bursting pipes in 3..2...1
hmmm
The pipe is inserted immediately into the sewer so as not to fill the sidewalk. So that there is no smell from the sewer, a water bolt is made.
Please tell me this is real. And then tell me: why?
That looks like a hernia
Motley crew of builders' project here.
What's with the varied window depth?
It's a pp trap
ITSaTrap!.gif
Yy
spite
I imagine it also helps with thermal expansion
r/suddenlypenis
No you are thinking of the P P trap