What stops rain from flooding your city?
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- เผยแพร่เมื่อ 15 พ.ค. 2024
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Rain has been a constant source of flooding in cities for centuries. We’ve gotten better at engineering defenses as people die and we needed to make things better.
Practical Engineering on how sewers work: • How Sewers Work (feat....
JAPAN SITES
Underground Water Tank Tour: gaikaku.jp/
Tetsugakudo Apartment: goo.gl/maps/orcjbFAHaLwVUdw36
Nissan Stadium: goo.gl/maps/jacAmnQQifjcJQAj9
Infrastructure Tourism: www.mlit.go.jp/sogoseisaku/re...
For any geeks like me, this is the document I used that covers the fun technical details of the sites I visited and more: documents.worldbank.org/en/pu...
TORONTO Sites
Moore Dry Pond: goo.gl/maps/MuZS2PaqSGfFaHUn6
Clairville Dam: goo.gl/maps/87gSqgP2h5qe9Zd48
Raymore Park: goo.gl/maps/Zrak6S78ZdNTWzqW6
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Table of Contents
0:00 From Highways to Hidden Dams
1:40 How Speed Fixed Sewers in Victorian London
3:49 Making Sewers Even FASTER!
5:30 #Ad So I Can Make These Videos
6:55 How Concrete Channels Move TONS of Water When it Rains
7:36 Speed Kills. The Hurricane Toronto Underestimated
9:20 How Dams save lives
10:46 Hidden Dams that Surround You
14:42 Tokyo - Apartments & Stadiums Designed to Flood
18:04 $2 Billion Underground Storage
19:13 Cheaper & Greener Flood Defenses Soon Coming to Your City
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Some videos have a creative commons license:
creativecommons.org/licenses/...
creativecommons.org/licenses/... - วิทยาศาสตร์และเทคโนโลยี
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Hey. Put the yellow outlines in the thumbnail. The video is great! Just the thumbnail sucks. Make it clearer what the video is about
@@zaj007 😅 7:59 😅
Do you think our country is about to go to war with China because of the Chinese government our is it our own government? God knows no one with any sense wants anyone to suffer
so why didn't they cover this or better yet drill a tunnel under the city for the water to run. look at all the space saved can be used for actually something good capping could put hole h.way overtop of that river. . silly not too
IF ALL THE SEAS WERE INK
I’m a civil engineer specialized in water resources and you did a fantastic job making such critical (yet mundane) infrastructure very interesting. Also great to see the actual manning’s equation when discussing open channel flow. Great work! I will definitely be subscribing.
Wow, thank you so much!
🤡
@@Lam
It is better to build a few man made lakes to store heavy rain fall. Then release the water gradually after the rains become less.
@@zenlei8258in an ideal world this would be true, but in heavily populated areas where "minimal planning" occurred & prevailed for over 100 years... lakes don't adequately protect the water reserves. More specifically, man-made lakes do not protect the costs that have been expended to capture and direct storm waters. Like this video explains "money and space" are the most important concerns for successful water retention in densely populated areas.
@@PureMagma
Some China lakes is doing this job.
The man made lakes have very less water by pumping water out during dry season.
During heavy rain fall the lakes will store this excess water temporarily.
So less water flow into to residents area and flood can be avoided.
It work all the time with proper planning.
17:27 *engineering an entire building to waterproof the first floor with watertight doors and reinforced windows*
Andrew Lam: "small details"
For this video haha
The production value on this is incredible. You strike a rare balance of both teaching me new things and also making a palatable video that I can watch while eating lunch. Keep it up bro
Really appreciate your comment! Getting the balance right for the story was really hard. Glad it paid off and made it a fun watch for you!
🙏
im literally eating lunch while watching this. And replying this comment
It's true, very well struck balance
you stole my words!!
Oh boy I thought this channel was dead, glad to see you back!
I'm alive, it just took a stupid amount of time to produce this video! Thanks for coming back and watching!
@@Lam yeah I can imagine, thanks :)
Takes time to produce such high quality videos. I'll wait
@@Lamplease keep it up.
Nah he’s definitely alive. His videos are super high-quality and he probably has a full time job outside of TH-cam.
I really hope all of those "I would need a full video to explain" bits turn into their own videos! I'm definitely interested to learn more about these projects!!
Oh they're very much a possibility. The sewer one especially as I have a lot the research down but it seems like a big video.
10:40 In the Early 1980's there was a huge flood in my home town. A few years later I became friends with another kid who had been crossing a flooded street.
He turned his head for a second and when he looked back his friend was gone. The water was a bit less than knee deep but it was muddy so the road was not visible under the water.
He thought his friend had just tripped and expected him to pop up in a second, when that didn't help he started to get worried and started walking around where his friend had been when he nearly fell into an open manhole.
He called for help but this storm drain flowed directly into the bay and there was very little hope.
They never did find a body. He said it was weird how you can be talking to someone one minute and the next they are just gone. There was no splash no cry of alarm, his friend was just gone.
After this the city started welding the man hole covers on. Not so strongly they could not be opened, but enough that the water could not blow them open in a flood.
Easily the best video on stormwater infrastructure I’ve ever seen. You really made a boring topic EXTREMELY interesting. Shoutout to all civil engineers that do amazing work that nobody takes the time to appreciate.
Wow, thank you so much. I tried my best to help transform the way they see the world around them. Hopefully they can now see what's been done
Underrated af.
This video shows the shift in the philosophy of stormwater management, from making the problem go away as fast as possible (conveyance), to holding them in place for as long as possible and not let it be a bigger problem down the line (retention).
Interesting thing about Tokyo and storm management is that it goes back to the Tokugawa Shogunate period. Edo is very flat and prone to flooding and as such the shoguns started flood mitigation efforts even during the Closed Doors period. They rerouted the most of the flow of the upstream rivers into Tone River, and in part making it the longest river in Japan. Then in the Imperial era giant bypass channels with giant floodplains were constructed, which uprooted quite a bit of homes. Not to mention dams.
Wow, thanks for the kind words and the added comment about the history. I didn't know that and I might cover tokyo and flooding in the future.
I knew you were going to talk about Philadelphia at some point. The city and its largest neighboring county, Delco, are both BELOW sea level and adjacent to the Delaware River. We've had heavy flooding in the past but it has improved significantly over the years. During hurricane Sandy the only thing preventing my house from being swept away was the genius engineering of the river right behind my property. I remember right after the storm sitting at the edge watching the water speed past what must have been over 30 miles an hour. In Ridley Park there is a gigantic recreational field called the "Hollow" that sits in a massive valley, with a small river at its bottom. Back in the 90s, according to my parents, the entire park used to be a lake. Now it's part of the genius engineering that keeps the area dry.
Wow, thank you for sharing that anecdote with me! I'm going to look up that right now
@@Lam sure thing! Just a quick correction on my part, the valley is located in "Prospect Park, PA" and officially is called "Moore's lake park". Right next to Ridley so I got it a bit mixed up.
Philly had the vine street expressway fill up in 2021 I think it was. While that was due to lack of working pumps I do wonder if it partially saved the neighborhood from filled up basements. Philly also has that river nobody can spell without using Google, which is funny because its pronounced like Google. Fortunately all my area in SNJ got during Ida was an EF-3 tornado.
Truly amazing the amount of time you dedicated to this is incredible. I also loved your detailed animations and even quick but still visible mathematical explanations. You also gave me some really cool japan visit ideas once I eventually can do that. I might suggest in the future though that maybe you try to collaborate with other creators to save you time on your hard work. I could see that you looked at practical engineering's video but maybe it might be a good idea for you to reach out for experts to explain topics to you instead of trying to understand it by reading (and losing those 8 hours for the math part/animation and everything). That hard work definitely paid off in the quality of this video just an idea to try to save you time but it's not necessary if you can't or prefer not to make your videos that way.
Hey Shockwire, really appreciate the kind words and the advice! Without a doubt growing my team in the future is important. The research process is far too laborious and a lot of it is me getting in my own way. I do know how to better streamline it and asking for helping will be something I do more of in the future. Part of me though and what drives this channel is that I love figuring stuff out on my own. Hope you get to go to Japan!
@@Lam Thanks for the reply I hope you are able to build that team because considering you did this with a smaller team and the quality is already so amazing I'm sure once you are able to save yourself more time your content will just get even better.
Shout out to the Manning Formula! As a young civil engineer 35 years ago, I was given a circular slide rule that was based on the Manning equation and it was so intuitive to properly size storm pipes - and is just as handy today even with the proliferation of computer software.
Mannings formula is not sufficient in most cases. To do things right you also need to consider inlet and outlet control. I have found that most general civil engineers forget this in practice.
Great video! It’s disappointing to see the video doing so poorly, TH-cam needs more content creators like you! You’re one of only a handful of creators I have notifications on for.
Thanks for being a big fan of the channel! I appreciate the support! Sometimes takes a few days for the video to pick up
It might get a second spring because it's linked first thing in Tom Scott's newsletter this week :D
Tom Scott, but with more substantial information.
I'm here from Tom Scott's newsletter, and I'm so so glad he linked this because this is the awesome content I'm always looking for :D It kinda reminds me of The B1M!
Awesome! Thank you!
Great work Andrew! Much appreciated.
This was great. Well worth the wait. Look forward to the next one.
That was fantastic. I'm glad I found you, tdotter. You have a new subscriber.
Oh wow, it was so cool to randomly find the inspiration for the Storm Drain location from Mirror's Edge!
I love your videos, they're all so technical and interesting. Well researched and enjoyable, keep it up!.
8:10 its actually called a "fluvial point bar" water slows depositing sediment creating the point not a peninsula :D and the direct other side of the point bar is the "thalweg" where the water is moving fastest eroding the river back.
Excellent summary of Flood mitigation
Excellent, that is good to know! Sometimes I can only dive so deep on a topic so it's nice knowing the proper name
Great video; the editing, and I appreciate the location shots very much.
wow the production quality on this is incredible! very inspiring 🙌
I love your videos. Complete switch from old content, but still amazing. Thank you.
Incredible,Incredible,Incredible,Incredible video. 5/5 100% - Thought provoking, technical, visual, digestible. Thank you!
I live in Philadelphia and had no idea we had this infrastructure for rain! This is absolutely amazing! I appreciate Philly a whole lot better! Thank you for the video!
Really fascinating. I hope all city planners watch your video.
1:04 Woah, that painting with the rain effects over it looked amazing!
What an informative and indepth look into this topic. Would like to see more on this, maybe with a collab from one of the folks you mentioned
TH-cam brought you back to my home and wow your videos are always excellent!
Thanks. In a development that is happening in my town, they were putting in those brightly covered archs, and then covering them up. I couldn't find anything that described their purposes. But now it is clear that they were one of the underground infiltration systems that you showed.
i can not express how much i love these types of videos and how fasinating they are. keep up the good work man looking forward to the next.
Thanks, will do!
Another great video! Very informative as usual! Thanks for producing this! I've never been to Tokyo but I want to go now for this reason!
This video is extremely valuable for us here in Brazil 🇧🇷 . We faced the most devastating flood ever in the south of the country, and I believe events like these (heavy rains) are going to be more common. Thank you for your research and work!
I love fishing those ditches and channels for some reason, it's my favorite
Brilliant job Andrew! You must have spent endless time making this video. It’s a benchmark!! Please keep making more videos!
Really enjoy the topics you choose to do videos on! Really unique and very interesting :)
Awesome video, happy to wait for as long as is needed with anticipation for the next one!
Thanks! Hopefully next one will be faster!
Loved this, especially that it covered so many approaches.
This is such a great video! I knew that a lot of engineering goes into urban design to mitigate flooding, but I had _no idea_ the extent to which it was implemented, especially in the world's biggest cities! Thank you for explaining so thoroughly. Looking forward to more content!
This is Awesome! Excellent work Andrew! 😎👍
Amazing video. You kept it entertaining while providing a lot of useful and interesting information. Well done!
Glad to see you back!
Great video and amazing production quality as usual! You definitely can see the amount of research and time you put into these videos! Keep em coming please!
Thanks Sam! Really appreciate it!
I love the both of them. Everyone loves the added greenery, and it's inarguably needed in such barren wastelands that is of modern infrastructure. I would have liked to have seen the rivers get more beautification as well, that way they aren't just concrete.
The massive feats of architecture and engineering are not also a method to secure reliable function during the most dangerous of storms, they are also incredibly impressive and undeniably cool.
Thank you for the insane amount of work you put into this!
Thanks for recognizing it! It was a struggle getting this to the finish line
Fantastic video! Audio great, editing great, knowledge at the top of the game! great content can't wait to see more!
Love you buddy. These r called holding ponds. Much needed in cities. It gives confidence too. city has water reserve within city to use in shortage.
As always, great engineering topic and a huge work put into it. Underated channel, hope you grow fast
Great visuals throughout this video. Happy to dee you pist again!
Great to see this channel again!
Love these styles of videos. Please keep it up!
Yooo, I can't watch this right now but I am stoked to see it! I'll be sure to watch this tomorrow
I love a good Swale. Floodplain protection in Melbourne use a lot of them and they add so much green space!
Great video Andrew, I love it, Very thoughtful video. Keep it up man
These videos are great and all, but what's the best budget dashcam for 2023?
All joking aside, these videos are extremely interesting.
Can't wait for the next one in a year.
I haven't looked at dashcams in a while
Thank you one of my favorite topics. Well done.
Amazing work man, thank you!
That top gear reference was beautiful
I subscribed for dash cams, but stayed for the new videos, keep it up!
Hey, you're back! Thank you for making this world a little better. The fact that you explain such important things in such detail and such simple terms sets you apart from other channels and makes you unique. I still can't forget your video about road barriers, I think it's stuck in my head forever (as well as your other videos). Thanks again! Keep going!
Really appreciate it! The magic is making things simple
I lived in Philly for 3 years and never even knew about the sponges! That's so cool
This was fascinating! Thank you for sharing😊
Its always great to find a new infrastructure and civil engineering "channel" (badum tish), instant sub.
Great video quality well done 👏
Incredible video! Subbed
Amazing, this video was crammed with information density. So many different examples and diagram. Really using the visual medium. Had to slow it down to 1x speed.
Thanks for appreciating! It's my philosophy, if it's not visual you might as well write an article.
Fantastic video. Well presented, interesting topic.
I’m from Houston and we have all sorts of basins for managing rainwater all over the place. As soon as I saw that soccer field, I knew that it was only a field when it wasn’t rainy :P I had no idea about the stormwater management in other places! It makes so much sense that people elsewhere would use the same techniques-after all, if it works it works-but I’d never considered it before. The water infrastructure down here is so prevalent, but I’ve struggled to find maps and data about how each piece specifically works, especially the inaccessible, invisible underground parts. And of course, finding the data still leaves interpreting and understanding the data ^^;; I’m glad you’ve put together this video!
Excellent video. Very informative and the production values are great
Fantastic video. Really interesting and very well presented. New subscriber right here 👊🏼
this is very informative video. thank you for making this one
Wow this video was really good. New subscriber now!
ALways happy to see a new Andrew Lam video in my feed. Always interesting, and the production quality is awesome!
Thanks! Glad you liked it!
ohoho, i absolutely adore learning about infrastructure stuff! this was very informative! it really does give me even more appreciation for city development
This was very good... worth watching!
I didn't know I love sewer systems and engineering 😅 Great video
Fascinating. Thanks for sharing.
What a wonderful video. Andrew, you have a gift for teaching
Great great video!
Loved everything about it, keep going!
This is the best TH-cam video I've seen in the last 6 months! So informative and insightful! The narrative and its presentation really helped my understanding compared to trawling Wikipedia.
Damn...this is a very high quality video I ever watch. We need to support this channel. I am speechless .... I just bow my head to you. From history to design to animation to story telling it takes this a lot of time to make a high quality video.
Another awesome video Andrew! Thanks!
Wow, thank you, really appreciated! I'll try to keep making content you like in the future!
The California storm somehow led me here. Great video! Well researched, more people should watch it.
I love this type of videos
This is an eye-opening look into the effects of better planning. This makes me appreciate what other cities hae done to make the lives of their citizens better. Right now it's raining like hell in Nairobi, Kenya and there is no planning for our city. Infrastructure has been destroyed, lives lost, disaster management is in shambles and nobody gives a duck.
18:24 that mirrors edge nostalgia never hit so hard.
More infrastructure videos please your style of explanation is amazing!
You put so much effort and extremely captivating and good editing. My favorite informational channel by far. Keep it up!
Wow, thanks! Really appreciate it!
That was a cool journey. Thanks!
Very awesome explanation and video
Dang! Found you by accident AND found an under ground storm pond install at my local Costco, Oshawa north lot in progress. COOL!
Video is so good I am sharing this.
Best one yet ❤
I'm kind of surprised that the Red River Floodway wasn't mentioned. When it was built, it was the 2nd largest earth moving project of modern times. Only the Panama Canal was bigger!
Amazing video! Very informative, interesting and entertaining!
Brilliant video..very informative.
Don't know how I got the chance to get this recommended but this is a very good video which I'm used to see on way bigger channels. Keep it up, that was amazingly informative and passionate.
One of the most compelling engineering explainer vids I've seen in a long time. Please keep it up!
Compelling but amateurish
This video is absolutely amazing. I really hope the algorithm picks this up. You obviously put a lot of effort into this and it really deserves a larger audience.
I hope it does too!