How Flood Tunnels Work

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I love this channel because it legit tells me about these cool civil engineering systems and areas if study I had no idea actually existed...

I think one important consideration that isn't modelled in your model is that the bottom of building basements and subway tunnels is significantly below the point where river banks overflow so even just a few centimeters above the bank can fill up whole basements.

I was at a concert in waterloo park last week and was wondering this exact thing

Grady, these vids are the reason you are in a league of your own. No one is able to explain in such detail from experience and have the handy-ness to build something to visualize what you are talking about. Top notch effort my man, you deserve all the success.

They had to build something similar to the Tokyo system here in Dallas when they rebuilt hwy 75 during the 90s. The highway got moved from the surface down into a huge concrete canyon that can collect rainwater faster than any feasible storm drainage system could handle. There are massive underground caverns 100ft below Uptown to store it until it can be safely released into the storm drainage system (Cole Park Storm Water Detention Vault). It's so well hidden that basically no one knows it exists.

This is the only channel that can make a 15 minute video about an underground tube, and keep me captivated from start to end.

I am a mechanical engineer and I hated my civil engineering courses in college but man do I love these videos. Keep up the great work Grady 😁

Thank you for mentioning the metric units too. It really helps 😊👍

Ok, that mica powder was an inspired addition to your garage model. Really helps make it visible what’s going away from the surface.

Top quality content as always! I really love the discussion of real world examples coupled with your home-made example creations! If anyone out there is wondering, Grady's book is similarly awesome!

As a person who lives in Vienna, I suggest you have a look how we figured out to manage floods from the danube river... ;)

Interesting, thanks. I have driven through the Kuala Lumpur SMART tunnel in Malaysia which is a multi-use tunnel allowing water and traffic movement and I believe has proven to be of great value since its commissioning.

I know learning about infrastructure is the point, and it’s still mainly why I enjoy this channel, but I also have to say, I love the glimpses we’ve gotten of your family growing in the Hello Fresh ad segments over the years too. What a lovely little household you have, Grady!

I trained as an Electrical Engineer (focusing on computers) but I am ALWAYS interested in how stuff works. I come at these with an eye to find some nugget of knowledge and I am never disappointed.

The sparkly water in the demo is so cool and pretty! It makes it easy to see the flow and turbulence too. Thanks for the video :)

Tokyo's underground thing is SO AMAZING if you ever take a trip to Japan you have to do a video on it because it is amazing

I dont know why but ive always liked water drainage systems. Most kinds of engineering are cool, but theirs something special about structures that control water. It always just reminds me of when i was 5 in my gravel driveway, digging channels from one flooded pothole to the next and watching it flow, then trying to see how many rocks i needed to plug the stream or make it take a route i wanted. If i had acrylic models like yours when i was 5, I'd probably be studying civil engineering rather than history right now lol.

This is awesome. My dad was the District Engineer for the Corps of Engineers when San Antonio was building their tunnel. It was awesome to get lowered by a crane in a man cage down the bore and see the TBM. Very cool stuff. Thanks for the memories!

Since you talked about this, can you talk about the red river flow-way in Winnipeg? "duffs ditch". It's been described as a modern marvel of engineering and is basically just a big ditch to prevent flooding. Fargo in ND are working on something similar now.