Engineering of Concrete Dams
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- Опубліковано 14 тра 2024
- This video investigates the mechanics of hydrostatic forces and how the dams resist these forces. The emphasis is set on arch and gravity dams as the most common types of dams. A quick investigation is performed on the Three-Gorges Dam as well as the Mullaperiyar Dam in India.
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I am a general contractor. I am required to take a continuing education course every two years in order to renew my license. Your video on retaining walls has far more useful content than any mandatory continuing education course.
Your efforts are really appreciated. You guys are coming up with really informative and knowledgeable content. Keep it up and awaiting your next video.
Thank you Adarsh, we are really glad you enjoyed it! Soon more to come.
This was a great video. I've worked in concrete construction for many years now and this was a very well made video. Thanks!
Thank you for your kind words JareDevilDog. We are really glad you enjoyed it!
Great video. Love from India. You almost pronounced well ‘Mullai periyar’ Dam❤️🔥
Also bear in mind that it doesn't matter how much water in terms of length that the dam is holding back, the hydrostatic pressure remains the same.
Yes that is a good point, often counter-intuitive to a non-engineering audience.
Extremely informative and interesting to watch!
Wow that’s a great video. Love the footage!
Glad you enjoyed it!
Much appreciated
What a nice video. Very informative. I am a graduating civil engineering student and all i know is about theories. This explains why we are solving all thos necessary calculation. Looking forward for more videos
Thanks Jerome for the nice words, more videos are on the way.
Great video!
Slight error in the video though, the picture labeled Hoover dam is actually Glen Canyon dam. I’ve had the privilege of of working at Glen Canyon for many years now.
Thank you so much for pointing this mistake out. That is indeed the Glen Canyon Dam. Cheers, and I am glad you enjoyed the video regardless of that inaccuracy.
@@TheEngineeringHub
It’s a great video, you guys did an outstanding job explaining the concepts!
Well done.Thx.
Thanks for watching!
Thank you.
🙏 Thank you very much 🙏
You're most welcome!
Nice buddy
Very good!
Glad you think so!
please upload more videos on civil engineering ☺️ ...i love to see your videos as you elaborate things better then me professors 😭
Thank you Vishal, we are glad you found the video useful and interesting. More videos are on the way!
Well dam, thus was a good video!
Nice video. 2d, 3d and real footages combination made it easier to understand!! Did you narrate it yourself?
Thank you so much Raghav, your support is very appreciated. We have several content creators and we take turns in narrating the videos. We try to improve the quality of the sound, animations, and content constantly based on feedback from our viewers like yourself. Thank you sir!
That was a DAM good video!
(sorry, couldn't resist :))
haha thank you Circuits!
Lol good one
Best video. Can you make a similar video on retaining walls.
Thanks Ashith, we'll do!
Ive always wondered how they manage to divert the water during construction? Gotta be lots of mud to get rid of. How do they test the soil under the projected dam ahead of time? Do they just expect to dig until reaching bedrock?
Im so glad i found this channel, i think i could have been an engineer, this stuff is very interesting!
Hi John, we love to see people get excited and enthusiastic about engineering. That was our aim! Our specialty is in structural engineering but I will try to answer some of your questions to the best of my knowledge (someone else reading this is always welcome to correct me). Diverting the river is a big part of the project. In the case of the Hoover Dam, it was actually done through tunnels specifically bored for this purpose through the side of the canyon. You can see photos of these tunnels and their construction on the link below:
www.alamy.com/looking-upstream-into-black-canyon-toward-hoover-dam-site-showing-outlet-portals-of-four-diversion-tunnels-and-blasting-in-outlet-valve-house-excavations-river-is-being-diverted-through-tunnels-3-4-scope-and-content-photograph-from-volume-two-of-a-series-of-photo-albums-documenting-the-construction-of-hoover-dam-boulder-city-nevada-image261739717.html
When it comes to the foundation, since dams are so massive they would need to be supported on bedrock (even though that's not always the case). That can be done through piles or if bedrock is close maybe excavate deep enough. For the Hoover Dam, since the Colorado River has carved out the bedrock into a canyon, everything around is pretty stable and strong so they didn't have to go too far deep to find a solid base.
How many videos have you done? Nice work
Hi jeff, this was our 8th video. We hope you like them. More are to come and hopefully with improved quality and content.
3:26 No - the forces don't originate at the centre of the arch. They are applied all long the length of the arch. And they certainly don't 'originate' at the top of the wall as implied by the animation - they are more intense the lower down you go *_below water level_* (ie as the water pressure increases with depth).
yes that is true and it was depicted as such in the earlier animations. 3:26 was a simplified way to visually explain what is going on.
I have a question; Will bullets shot out of a gattling-gun have increased speed when installed on a fighterjet at 1000 km/h have an increased muzzle velocity, or is it independent? Will the effect on target vary according to if what it is firing at is moving, and if it is moving towards or away?
That's an interesting question Olga & Joachim. We are not military/weapons engineers but from basic Newtonian mechanics the speed of the bullet should be increased due to its initial speed inherited from the fighter jet i.e. V_bullet = V_jet + V_firing speed. This is with respect to a reference system fixed to a third object (e.g. the Earth). Also an important assumption is that the system remains far from the speed of light and relativity does not come into play. If any physicist is reading this and would like to correct me please do so.
Ive seen this question asked but for light, does light coming out of headlights on car goes faster when the car is moving vs stationary. Obviously no, lightspeed is lightspeed. But the bullet is different than light.
Well, dam this is interesting.
Inb4 the flood of dam puns 🤣
The title should be "Engineering Dams" or something along that line, not building some big concrete structures. The actual building is never discussed while it is super interesting. Likewise, only dams are considered, not other massive concrete structures like foundations or what not.
Check out the title now Leo
@@TheEngineeringHub Hahaha, amazing, I did not expect that. I already subscribed before reading this, but I would most certainly be now. I hope you do more in-depth (and also longer) videos in the future, it is just so interesting. Next time I take a better look at a failing retaining wall, who knows, maybe I can tell what the probable cause is?
@@leocurious9919 Of course, it was good feedback, fully on point. Channel > our ego
Mulla... dam
no need to apologise for pronunciation. just do the best you can.
I think you should cut a little more slack for the Mullaperiyar dam, colonial infrastructure usually appears to be amazing due to survivor bias but that was built with rubble 125 years ago and it’s still doing it’s job. The empire didn’t build infrastructure out of the goodness of its heart, if they knew they’d have to leave soon they’d do the job but it would be done dirt cheap.
Our intent was not to dis the Mullaperiyar dam. On the contrary, it is an amazing and incredibly cost effective structure. Though maintenance is a key issue and could jeopardize even the best of structures. We just wanted to outline some problems that earthfilled (or in this case rubblefilled) dams could face.
@@TheEngineeringHub On retrospect I seem more than a little rude, I should have pointed out how good the video was as a whole, which it is. I just have an appreciation of old infrastructure, just my foible.
Thank you so much! We welcome any comments positive or negative. That's the only way we can improve! But sometimes we do get a bit defensive of our videos haha