If they left enough room for the drainage system where the outflow pipes run along the outside of the training wall before dumping back into the chute, that seems like it would work.
Yet they get paid jackshit. Everything is backwards in this world where “gender study” professors and the like get paid more and seen as more important.
Juan - O U T S T A N D I N G presentation as always. When I grow up I want to be a concrete engineer specializing in dam construction/repair. (I'm now 67!)
Jim Civil engineers build targets Mechanical engineers build weapons Back when I was in engineering Civil engineers = Dam buildeers Mechanical engineers = Toy makers Electrical engineers = Wire pullers Chemical engineers = Cookie makers
Thanks to Juan for sticking with this and the AMAZING crews working on the Oroville Spillway project. Not only has it become a teaching tool for those of us not in that business, but it's also become a way to watch what's going on at "home" for those of us who are detached. I, personally, cannot thank ANY of you enough!
Just awesome as always, Juan! My late 2nd cousin Preston Cedarholm, who was an Engineer at Oroville Dam in the '70's, would be proud of your work, as am I! Thanks!
Many thanks , Juan, for your comprehensive and easy to digest coverage of the Oroville Dam Spillway project. Would you please take another run at clarifying how leveling concrete differs from the other three recipes: dental concrete, structural concrete, and roller compacted concrete.
You are correct about the rebar. Leveling concrete is used from 7.5 feet below finish grade to two feet below finish grade, then structural concrete (with rebar) is the last two feet. Roller compacted concrete is used anytime rock grade is more than 7.5 feet below finish grade. Dental concrete is used in crevasse two small for roller compacted equipment to get into, then RCC is placed on top. After this flood season, structural concrete will be placed on top of RCC for finish spillway next year.
I didn't think it was possible, but it sounds like they're getting accomplished what they wanted done this year. How amazing. Thanks Juan for making it interesting.
REMEMBER VIEWERS. Be sure to watch all of the ads. They help the youtubers who we enjoy so much. This is not easy for them to do. If your like me and it sounds like we are all a little geeky about this stuff, then watch the ads. It doesn't take that long. ( No I don't work for any of the advertisers) This goes for any of the channels you enjoy so much. Great job, Jaun
This was a great series. I am amazed at the progress on this project. That's a lot of concrete to pour and cure in not a lot of months. Thank you for your continuing coverage of this incredible rebuild. Now we have to find you another project down the road to report on ... :)
Juan, would you consider editing all of this down into a documentary. It would be a great learning tool for engineers. Project management. Engineering. Construction. I'm a mechanical engineer so my civil engineering experience is limited, but this has been a great series all the way back to February
Eastern Woods that's an excellent idea in getting extra miles out of this awesome content. Given Juan still has a day job the last time I checked, maybe he turns it over to a editorial agency but still maintains the creative oversight and direction. Just trying to help Juan stay sane and have enough time left to spend with Pete and crew!
Don't just stand there Juan, GO FOR IT !! Excellent idea. I would purchase a video documenting this entire operation from the beginning to the end. Thanks for all you do.
Juan , I want to thank you for this series on the spillway . I think the method with which you approach it has been better than 99% of any mainstream media . Of course I may be biased because you fly one of the two favorite airplanes I used to make parts for . Also that you ride adventure style bikes . The inside tour did clarify multiple things for those of us following along . Many people have no idea what it takes to take the video and then process it , a lot longer than they would guess , thanks for all your hard work !
Hey thanks for the great videos and interviews!! Hope to see more when they start "reconstruction" next year. Just a note regarding the difference in names of concrete being used at site: all concrete is made from PCC (Portland concrete cement) the difference is in the mixtures and ratios of fines and aggravates to PCC that "glues" the concrete together when water is added. It is a chemical reaction that gets stronger with time as it cures. Since the PCC portion of concrete it the most expensive part, it is used sparingly and effectively. Dental or slurry type concrete has a larger portion on PCC and smaller fine aggregates so it can flow easier into into the cracks and crevices of the existing bedrock. They use the RCC roller compacted concrete to fill the large holes because it is a fill material with a lower (minimal) amount of PCC, until they are within the final surface. The confusion regarding "leveling" or "structural" concrete just refers to an issue of whether to use steel rebar reinforcement. And also, certain chemical additives can be used in the mix to strengthen the final pour. I hope this helps explain PCC. Concrete and its many forms and uses. It is the modern miracle material (if you will) that has changed how we have built just about everything in our lives in the last hundred years!!
Kinda makes me wonder how the Roman's built mega structures that still last till this day... It appears everything will come to fruition right on time with all concrete mixes and layers... Great explanation on all the levels and styles of concrete mixes for all the different applications... The glue and bonding hardening agents really up the scheduling goals of this project... Thank-You for explaining the different uses of each... I'm very impressed...
Ryan Toemmes the romans had concrete we still don't know how their concrete worked in many ways. One type of concrete they had would cure under salt water they used it to build harbors and breakwaters. Some things of roman technology have not yet been rediscovered.
So true, the brilliance of the Roman Engineers in designing the roof of the Pantheon out of concrete that has withstood 2,000 years of earthquakes, settling, with only minor cracking, etc... One of the secrets you mentioned is that they kept their concrete WET to maximize its' strength. And it still stands today! Keep your concrete wet to strengthen it. Just like the guys on the Oroville Spillway project. Sprinklers, burlap and tarps cover and keep it wet. Wet concrete is your friend, ask the Romans.
@RJ Prescott. That's another nut we seem to have cracked recently. Short answer is they used volcanic ash, lime and volcanic aggregate and mixed with seawater. Long (fascinating) answer www.nature.com/news/seawater-is-the-secret-to-long-lasting-roman-concrete-1.22231
The HUGE scale of the spillway was really seen in this video with you being at "ground zero". The before & now shots, what a contrast, what a project! GREAT report 1 thru 4!
Hi Juan, I wanted to clarify the confusion about concrete. The foundation for the final structural concrete can be EITHER RCC or leveling concrete. In sections where the surface rock is close to the final grade, they use leveling concrete. In the case of the PP, they start with dental to fill the deep and narrow crevices and may also use some leveling concrete until the surface is level enough to start RCC. Since RCC is being built up to the final grade and provides a stable surface, there is no need to apply anything else before installing the final structural slabs. The RCC section currently meets flush with the leveling concrete on the lower section. This means it will be lower than the bottom section necessitating a 'ramp' up at this point. Next year, after the slabs are installed on the RCC, it will be level. Another point to clarify is that they are NOT removing the RCC surface in order to install the final slabs. The structural slabs will go directly on top of the RCC. The only preparation is cutting trenches across it for the drains. This is the same construction process used on the upper and lower sections. In this case, RCC substitutes for the leveling concrete used in those areas. Instead of the drains running across the leveling concrete they will run in a trench ground into the top of the RCC. Where the RCC section meets the upper section, the drop will be decreased.
Juan I thank you very much for digging into such a enormise project. You have dug out the facts like you were one of the major stock holders of a major corp. Thanks again. Tom
Brilliant investigative reporting. There is no substitute for technical background when trying to get to bottom of projects like Oroville. Many thanks for all the hours spent on this.
Fascinating project and reporting! We are learning along with you Juan, great job, objective as always! Thank you for your interest, time and effort. And thanks to the Mrs. for allowing you to do this, read supporting your efforts.
Thank you again Juan for informative and correct reporting on the repair processes. I don't see as much of the garbage media types talking about this anymore and I believe that is because you are providing true information as well as you are sticking with it. As we say, "You are doin' good."
All of this is absolutely fascinating to me. Its been stated a thousand times but I'll say it again..... Thank you for bringing this much attention and detail to a project like this.
Juan great report Thank you for taking the time out of your busy personal life to get us the real story and explanations that we can all understand!!!!!
Thankyou again Juan for your use of excellent probative and communicative skills. It really helps to dismiss a lot of hysterical and troll-like tendencies along with the dreaded "fake news".
Love the coverage of you videos. Everyone is talking about concrete and i have no problem about that my next door neighbour was the Chairman of the Northern Ireland Concrete Association . He would have loved to see your videos. Thank you.
Thanks Juan for the continuation of the tour of the Oroville Dam project. As usual very informative. We are very lucky to have your very competent presentation. The ways the different concretes are used are very interesting.
Yeah, it's probably the conspiracy theorists that run a bunch of channels on here with topics like "The Green Spot PROVES the DAM IS FAILING!" They also tend to have reports about how lizard aliens are controlling the world. In other words, crazy people.
Watch some of the community town hall meetings on the DWR's youtube channel and you'll COMPLETELY understand. Goodness gracious - some people REALLY have a bone to pick with DWR, some legitimate complaints like loss of farmland downstream due to erosion - others, it's like the old man on the block who wants financial reparations and subsidies from the dam (and when the old man started reading off his demands one time, you could hear some manly women scream something to the effect of "yeah that's right! tell them!" lol! I couldn't believe it LOL)
Those thumbs down are probably from contractors who didn't get to work on this project. The scope and scale are astounding, and a great job from Juan Browne
Juan: First of all, thank you so much for providing this "up close and personal" info and view of this project. If I might be allowed to clarify a tiny bit simply because I come from a Construction background and almost instinctively understand the terminology. A "cold" joint in concrete is when two layers/applications of concrete are placed but the first layer/application has been allowed to dry/cure in between applications. So, what they were describing is how they are able to create the conditions of a "live" (wet) joint even though the first application has been allowed to be put in place well ahead of the final layer/application. Making the final complete thickness of ALL the concrete as though it was all placed at the same time and when wet. One additional clarification just to be "completely" accurate: Next year when the "structural" concrete is placed over the RCC at the mid section (Plunge pools) of the spillway, they will "cut" the RCC but ONLY to simulate the slots the stay forms have created for the drains @ the LSW. They will saw cut those slots into the RCC and add the drain pipe and rock as below. Finally, the "RCC training walls" you referred to may be 12' wide but are 15' tall as opposed to the structural walls that are 25' tall. That 10' difference is going to be the limiting device to cut off the water flow at 100k CFS. They are going to add a 6" layer of shot-crete on the "water" side of those RCC training walls as a "hardened" surface for the water to travel against. Hard to imagine a water flow @ 178' wide by 15' tall. Almost "un-imaginable". This year my look like "the fun part" compared to all the RCC demo and cutting that is going to take place next season. Will also be interesting to see how they finish/groom the landscape on the "dirt" side of the spillway walls and other areas they have created as staging/working areas during the construction process. Just like freeway building, SOOO much "false work" needs to be done in the course.
Its been fun and educational to see and hear the engineers explain the process. Its been easier to see the scale of this project and the work involved with your in-depth reports. You are to be credited with helping our understanding of the work for us viewers, you've been a pretty fair teacher along the way, thanks! Love the views from the mighty Luscombe
Great vid,you're excused on minor confusion. Your a pilot with a great comprehension of the project. I'm a rock miner who might be able to land a plane if I had to. Good job.
Great work "Blancolirio".....loved the video......keeping us current down here in the City Of Oroville.....since we still live here, the information is appreciated......there's no one else providing anything close to this on the rebuild of the spillway, thanks again.....
I find it always interesting to watch a good plan being executed as designed. This is what you get when professionals are allowed to do their jobs. The forensics report was enlightening as well. It sounds like there is much to be said for the advancement of the science of concrete by engineer's as much as anything else since the spillway was constructed back in the 60's. great reporting !
Hi Juan. Thanks for another great update! Having spent so much time documenting the reconstruction efforts from afar, it must have felt very rewarding when you finally got a close-up view of the site and were able to speak with key members of the team in person. Thanks again for the great work you are doing to provide detailed and timely information.
Great work Juan. I've been watching from the very beginning up here in Canada. I couldn't imagine how anyone else could have covered this story any better than you have.
Hi Juan your coverage of this vast project is great i have watched from the beginning . I wish we could do the same here in the UK, all we get are ill-informed press comments . Keep up this work when you are not flying.
Thank you for your great and informative videos! What an impressive undertaking. Hats off to all involved in the reconstruction of this massive project.
Gotta hand it to ya Juan. You've done an excellent job covering the Oroville spillway failure. I work in engineering and have been following the happenings out there. You are great at explaining the technical side of things. I've just caught up to your latest videos and can't wait for more. Thanks from Ohio.
this is better than the real news! news on t.v. is mostly negative, inaccurate, biased, and filled with horrible commercials. this channel is the way it should be. Juan needs to hire a team of reporters, that cover important issues across the state, and then publish a daily / weekly news show covering a conglomerate of hot topics! i'd buy that.
Juan, I've been following you via my smart TV regarding this project since the original spillway failed. Finally, got on the computer and subscribed. Your work in reporting on the progress is excellent. I thoroughly enjoy your presentations.
Huge project. I have a cousin who is a dam engineer in Washington State. He is currently working on this project. His company engineers and rebuilds hydro gates in all electro dams west of the Mississippi. (yes his motor home is much bigger than mine lol.)
I find this project fascinating and will be waiting for more updates. Thank goodness for youtube as regular tv is a wasteland for the most part. Thanks Juan!
Excellent educational series, Mr. Browne! Please create a playlist of this series and I will share it far and wide! One thing that rarely comes across in these videos is the absolutely MASSIVE scale of this project. It's just hard for the human mind to grasp things millions of times larger than ourselves. (P.S. It's really nice to see something about the dam in which some damn fool isn't talking about the dam "green spot"!!!)
Juan, another great look from boots on the ground. With all the discussion about which concrete placed where .... just glad to see the job completed using best construction practices. Kiewits track record proven.
Thanks for the videos Juan thank you for you time. I love watching your channel. Airplanes and engineering my favorite things. If you get a chance thank those busy men for taking time out of their busy day to help us better understand what is going on.
I was blown away by the pictures in Part 3 about how close they came to eroding away underneath the emergency spillway. That could have been a massive disaster with lots of loss of life.
Another very informative video Juan thanks for your hard work, I've learned a lot from these reports. One thing that people need to know is the importance this water reservoir is to central California and to the food that feeds a lot of hungry mouths all over the USA.
Thank you for your continuing informative reporting on this amazing engineering project. You might consider an offshoot project to look into the maintenance and monitoring on other California dams, to see if that has improved at the other dams after the Oroville near disaster.
Wow, caught this one nice and early! That plunge pool sure is deep. Great video, gives a real sense of scale which you don't get from the overhead or distance views.
The fixed point GPS that you are referring to is called "Differential GPS." By placing a GPS receiver on a known lat/long point, you can backwards calculate the error introduced into the GPS signal and greatly increase the accuracy of the GPS signal. Of course it requires simultaneous readings from the Differential GPS receiver and the receiver at the location in question.
Great! I've been wondering about the layering of new on top of cured concrete. ( how it sticks etc) I heard him say preparing the cured for new next year(taking it down to expose the aggregate.) and rock bolts. Excellent questions Juan. Engineering background shows, as opposed to journalism background. Just the man for the job. One aspect of the project is deadline. You always cross your fingers that nothing breaks and what redundancy is necessary. Waiting on parts or pieces is a killer.
Can't wait to hear the next major update, since most of the video and the stuff was done back nearly 2 weeks ago. Hope to see where they're going with it now.
Breaking News-Official Forensics Report Out today-damsafety.org/sites/default/files/files/IFT%20interim%20memo%20final%2009-05-17.pdf
Great summary in only seven pages. Good read for everyone following this story.
Soren Solveig --- I edited my response to you earlier as I found the information regarding your question.
If they left enough room for the drainage system where the outflow pipes run along the outside of the training wall before dumping back into the chute, that seems like it would work.
My Firefox browser says that damsafety.org is improperly configured and not secure. Result? no connection.
Cos they need to saw cut into the complete RCC floor right across to the ends or sides in order to put in the drainage systems next season
"Hot, hard, ankle-twisting, back breaking work." Amen! Those folks certainly earn their paycheck.
Impressive, Juan!
Yet they get paid jackshit. Everything is backwards in this world where “gender study” professors and the like get paid more and seen as more important.
Juan - O U T S T A N D I N G presentation as always. When I grow up I want to be a concrete engineer specializing in dam construction/repair. (I'm now 67!)
DM Haa! Don't grow up..."it's a trap"...lol
wow! You replied - and made my day! Thanks Juan and greetings from the Catskill Mountains, NY state.
Civil Engineers Rock!
Jim
Civil engineers build targets
Mechanical engineers build weapons
Back when I was in engineering
Civil engineers = Dam buildeers
Mechanical engineers = Toy makers
Electrical engineers = Wire pullers
Chemical engineers = Cookie makers
Thanks to Juan for sticking with this and the AMAZING crews working on the Oroville Spillway project. Not only has it become a teaching tool for those of us not in that business, but it's also become a way to watch what's going on at "home" for those of us who are detached. I, personally, cannot thank ANY of you enough!
Just awesome as always, Juan! My late 2nd cousin Preston Cedarholm, who was an Engineer at Oroville Dam in the '70's, would be proud of your work, as am I! Thanks!
Why would anyone put a thumbs down on this superb reporting? Thank you Juan! Great job! Very old school.
Many thanks , Juan, for your comprehensive and easy to digest coverage of the Oroville Dam Spillway project. Would you please take another run at clarifying how leveling concrete differs from the other three recipes: dental concrete, structural concrete, and roller compacted concrete.
I reckon leveling concrete is the same as structural concrete but with no reinforcing steel bars. Just a guess.
You are correct about the rebar. Leveling concrete is used from 7.5 feet below finish grade to two feet below finish grade, then structural concrete (with rebar) is the last two feet. Roller compacted concrete is used anytime rock grade is more than 7.5 feet below finish grade. Dental concrete is used in crevasse two small for roller compacted equipment to get into, then RCC is placed on top. After this flood season, structural concrete will be placed on top of RCC for finish spillway next year.
Better make that cigar a Churchill Maduro, for good measure!
I didn't think it was possible, but it sounds like they're getting accomplished what they wanted done this year. How amazing. Thanks Juan for making it interesting.
All the CAT equipment makes me smile and my retirement easy! Great CAT customer for years and years.
REMEMBER VIEWERS. Be sure to watch all of the ads. They help the youtubers who we enjoy so much. This is not easy for them to do. If your like me and it sounds like we are all a little geeky about this stuff, then watch the ads. It doesn't take that long. ( No I don't work for any of the advertisers) This goes for any of the channels you enjoy so much. Great job, Jaun
Frank Ligi 30 seconds of ad watch works I hear...
This was a great series. I am amazed at the progress on this project. That's a lot of concrete to pour and cure in not a lot of months. Thank you for your continuing coverage of this incredible rebuild. Now we have to find you another project down the road to report on ... :)
Juan, would you consider editing all of this down into a documentary. It would be a great learning tool for engineers. Project management. Engineering. Construction. I'm a mechanical engineer so my civil engineering experience is limited, but this has been a great series all the way back to February
Eastern Woods that's an excellent idea in getting extra miles out of this awesome content. Given Juan still has a day job the last time I checked, maybe he turns it over to a editorial agency but still maintains the creative oversight and direction. Just trying to help Juan stay sane and have enough time left to spend with Pete and crew!
Don't just stand there Juan, GO FOR IT !! Excellent idea. I would purchase a video documenting this entire operation from the beginning to the end. Thanks for all you do.
Juan , I want to thank you for this series on the spillway . I think the method with which you approach it has been better than 99% of any mainstream media . Of course I may be biased because you fly one of the two favorite airplanes I used to make parts for . Also that you ride adventure style bikes . The inside tour did clarify multiple things for those of us following along . Many people have no idea what it takes to take the video and then process it , a lot longer than they would guess , thanks for all your hard work !
Hey thanks for the great videos and interviews!! Hope to see more when they start "reconstruction" next year. Just a note regarding the difference in names of concrete being used at site: all concrete is made from PCC (Portland concrete cement) the difference is in the mixtures and ratios of fines and aggravates to PCC that "glues" the concrete together when water is added. It is a chemical reaction that gets stronger with time as it cures. Since the PCC portion of concrete it the most expensive part, it is used sparingly and effectively. Dental or slurry type concrete has a larger portion on PCC and smaller fine aggregates so it can flow easier into into the cracks and crevices of the existing bedrock. They use the RCC roller compacted concrete to fill the large holes because it is a fill material with a lower (minimal) amount of PCC, until they are within the final surface. The confusion regarding "leveling" or "structural" concrete just refers to an issue of whether to use steel rebar reinforcement. And also, certain chemical additives can be used in the mix to strengthen the final pour. I hope this helps explain PCC. Concrete and its many forms and uses. It is the modern miracle material (if you will) that has changed how we have built just about everything in our lives in the last hundred years!!
Kinda makes me wonder how the Roman's built mega structures that still last till this day...
It appears everything will come to fruition right on time with all concrete mixes and layers...
Great explanation on all the levels and styles of concrete mixes for all the different applications... The glue and bonding hardening agents really up the scheduling goals of this project...
Thank-You for explaining the different uses of each...
I'm very impressed...
Ryan Toemmes the romans had concrete we still don't know how their concrete worked in many ways. One type of concrete they had would cure under salt water they used it to build harbors and breakwaters. Some things of roman technology have not yet been rediscovered.
So true, the brilliance of the Roman Engineers in designing the roof of the Pantheon out of concrete that has withstood 2,000 years of earthquakes, settling, with only minor cracking, etc... One of the secrets you mentioned is that they kept their concrete WET to maximize its' strength. And it still stands today! Keep your concrete wet to strengthen it. Just like the guys on the Oroville Spillway project. Sprinklers, burlap and tarps cover and keep it wet. Wet concrete is your friend, ask the Romans.
@RJ Prescott. That's another nut we seem to have cracked recently. Short answer is they used volcanic ash, lime and volcanic aggregate and mixed with seawater. Long (fascinating) answer www.nature.com/news/seawater-is-the-secret-to-long-lasting-roman-concrete-1.22231
Thanks for that & well said..
The HUGE scale of the spillway was really seen in this video with you being at "ground zero". The before & now shots, what a contrast, what a project! GREAT report 1 thru 4!
Hi Juan,
I wanted to clarify the confusion about concrete. The foundation for the final structural concrete can be EITHER RCC or leveling concrete. In sections where the surface rock is close to the final grade, they use leveling concrete. In the case of the PP, they start with dental to fill the deep and narrow crevices and may also use some leveling concrete until the surface is level enough to start RCC. Since RCC is being built up to the final grade and provides a stable surface, there is no need to apply anything else before installing the final structural slabs.
The RCC section currently meets flush with the leveling concrete on the lower section. This means it will be lower than the bottom section necessitating a 'ramp' up at this point. Next year, after the slabs are installed on the RCC, it will be level.
Another point to clarify is that they are NOT removing the RCC surface in order to install the final slabs. The structural slabs will go directly on top of the RCC. The only preparation is cutting trenches across it for the drains. This is the same construction process used on the upper and lower sections. In this case, RCC substitutes for the leveling concrete used in those areas. Instead of the drains running across the leveling concrete they will run in a trench ground into the top of the RCC.
Where the RCC section meets the upper section, the drop will be decreased.
Superb work Juan, I do enjoy your updates at Oroville. Brings back something that is missing from mainstream media.
Thanks for the update. I don't think people appreciate how HUGE this project is. Thanks for giving us the on-the-ground perspective.
Juan I thank you very much for digging into such a enormise project. You have dug out the facts like you were one of the major stock holders of a major corp. Thanks again. Tom
I am a gear head, trailbike rider. Love the channel, good job on reporting...
Brilliant investigative reporting. There is no substitute for technical background when trying to get to bottom of projects like Oroville. Many thanks for all the hours spent on this.
I think the original guys that put in the old spillway would be amazed at this work!
They'd sure be amazed by the technology available now, as compared with what they had to work with.
Fascinating project and reporting! We are learning along with you Juan, great job, objective as always! Thank you for your interest, time and effort. And thanks to the Mrs. for allowing you to do this, read supporting your efforts.
Thank you again Juan for informative and correct reporting on the repair processes. I don't see as much of the garbage media types talking about this anymore and I believe that is because you are providing true information as well as you are sticking with it. As we say, "You are doin' good."
All of this is absolutely fascinating to me. Its been stated a thousand times but I'll say it again..... Thank you for bringing this much attention and detail to a project like this.
Amazing project. Thanks to everyone for giving their time and access to you, Juan Browne! Concrete is complicated stuff!
🇺🇸 Happy Labor Day. 🇺🇸
Great Engineering, Great Work, Great attention to detail and Great reporting!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
I used to pump concrete, that's a big boom and powerful pump truck ,WOW ,thanks ,Juan!
Great series Juan - thank you.
I've said before, the scale is just breath taking!
Wow, your video really shows the true scale of that plunge pool - just looking up and up that face of rock. Amazing engineering job.
Juan great report Thank you for taking the time out of your busy personal life to get us the real story and explanations that we can all understand!!!!!
Thankyou again Juan for your use of excellent probative and communicative skills.
It really helps to dismiss a lot of hysterical and troll-like tendencies along with the dreaded "fake news".
Love the coverage of you videos. Everyone is talking about concrete and i have no problem about that my next door neighbour was the Chairman of the Northern Ireland Concrete Association . He would have loved to see your videos. Thank you.
Thanks Juan for the continuation of the tour of the Oroville Dam project.
As usual very informative. We are very lucky to have your very competent presentation. The ways the different concretes are used are very interesting.
Thanks for the learning experience. Never understand the 2-3 thumbs down on these videos
The competition.
Yeah, it's probably the conspiracy theorists that run a bunch of channels on here with topics like "The Green Spot PROVES the DAM IS FAILING!" They also tend to have reports about how lizard aliens are controlling the world. In other words, crazy people.
Watch some of the community town hall meetings on the DWR's youtube channel and you'll COMPLETELY understand. Goodness gracious - some people REALLY have a bone to pick with DWR, some legitimate complaints like loss of farmland downstream due to erosion - others, it's like the old man on the block who wants financial reparations and subsidies from the dam (and when the old man started reading off his demands one time, you could hear some manly women scream something to the effect of "yeah that's right! tell them!" lol! I couldn't believe it LOL)
Matt Jones people who dont want to think
Those thumbs down are probably from contractors who didn't get to work on this project. The scope and scale are astounding, and a great job from Juan Browne
Juan: First of all, thank you so much for providing this "up close and personal" info and view of this project. If I might be allowed to clarify a tiny bit simply because I come from a Construction background and almost instinctively understand the terminology.
A "cold" joint in concrete is when two layers/applications of concrete are placed but the first layer/application has been allowed to dry/cure in between applications. So, what they were describing is how they are able to create the conditions of a "live" (wet) joint even though the first application has been allowed to be put in place well ahead of the final layer/application. Making the final complete thickness of ALL the concrete as though it was all placed at the same time and when wet.
One additional clarification just to be "completely" accurate: Next year when the "structural" concrete is placed over the RCC at the mid section (Plunge pools) of the spillway, they will "cut" the RCC but ONLY to simulate the slots the stay forms have created for the drains @ the LSW. They will saw cut those slots into the RCC and add the drain pipe and rock as below.
Finally, the "RCC training walls" you referred to may be 12' wide but are 15' tall as opposed to the structural walls that are 25' tall. That 10' difference is going to be the limiting device to cut off the water flow at 100k CFS. They are going to add a 6" layer of shot-crete on the "water" side of those RCC training walls as a "hardened" surface for the water to travel against. Hard to imagine a water flow @ 178' wide by 15' tall. Almost "un-imaginable".
This year my look like "the fun part" compared to all the RCC demo and cutting that is going to take place next season. Will also be interesting to see how they finish/groom the landscape on the "dirt" side of the spillway walls and other areas they have created as staging/working areas during the construction process. Just like freeway building, SOOO much "false work" needs to be done in the course.
Wow we really got to realise just how huge the site is from inside the plunge pool. It is a vast under taking .cheers
Its been fun and educational to see and hear the engineers explain the process. Its been easier to see the scale of this project and the work involved with your in-depth reports. You are to be credited with helping our understanding of the work for us viewers, you've been a pretty fair teacher along the way, thanks! Love the views from the mighty Luscombe
Cheers Juan, great to be up to date...👍🏼😊
Great vid,you're excused on minor confusion. Your a pilot with a great comprehension of the project. I'm a rock miner who might be able to land a plane if I had to. Good job.
Great work "Blancolirio".....loved the video......keeping us current down here in the City Of Oroville.....since we still live here, the information is appreciated......there's no one else providing anything close to this on the rebuild of the spillway, thanks again.....
Great reporting and thank you to the guys at the DWR for allowing you access to the site and answering your questions.
I find it always interesting to watch a good plan being executed as designed. This is what you get when professionals are allowed to do their jobs.
The forensics report was enlightening as well. It sounds like there is much to be said for the advancement of the science of concrete by engineer's as much as anything else since the spillway was constructed back in the 60's. great reporting !
Hi Juan. Thanks for another great update! Having spent so much time documenting the reconstruction efforts from afar, it must have felt very rewarding when you finally got a close-up view of the site and were able to speak with key members of the team in person. Thanks again for the great work you are doing to provide detailed and timely information.
Leonard yes!
Thanks again Juan, and thank you to DWR for providing you the access. I see that as recognition of the terrific job you're doing.
Great work Juan. I've been watching from the very beginning up here in Canada. I couldn't imagine how anyone else could have covered this story any better than you have.
Excellent series Juan, thank you. Also thanks to DWR and Kiewit for allowing access to the construction zone for you folks.
Can't believe how fast this has progressed!
Hi Juan your coverage of this vast project is great i have watched from the beginning . I wish we could do the same here in the UK, all we get are ill-informed press comments . Keep up this work when you are not flying.
John Williams - thanks for the clear explanation of the various concrete mixes -- very helpful. Best wishes.
Thank you for your great and informative videos! What an impressive undertaking. Hats off to all involved in the reconstruction of this massive project.
I don't know why I love this video series but I do.. you're doing a great job documenting this project and it's fascinating to watch. Keep it up!
Tiny House Customs Thanks Tiny!
Thanks Juan. Great job covering this project so far.
Gotta hand it to ya Juan. You've done an excellent job covering the Oroville spillway failure. I work in engineering and have been following the happenings out there. You are great at explaining the technical side of things. I've just caught up to your latest videos and can't wait for more. Thanks from Ohio.
Très beau reportage! Merci de nous faire suivre depuis le début ce gros chantier.
La remontée du déversoir en Flyover est impressionnante.
I'm counting on you Juan can't wait till the next update from you! You Rock!! 👍🏻
Thank you so much for taking your time to video all of this tour and sharing it with us. I have greatly enjoyed all of your videos.
The shots from down on the rock, at 8:15 really show the scale of the thing, which is hard to grasp from the aerial shots. It's mind-boggling.
just brill, have been following from the very beginning,a lot of hard work has gone into all theses updates, thank you...
this is better than the real news! news on t.v. is mostly negative, inaccurate, biased, and filled with horrible commercials. this channel is the way it should be. Juan needs to hire a team of reporters, that cover important issues across the state, and then publish a daily / weekly news show covering a conglomerate of hot topics! i'd buy that.
Juan, Thanks for all your time and effort on this series. Its both interesting and informative. I look forward to each update.
one man's quest to explain different types of concrete to the world.
Juan, I've been following you via my smart TV regarding this project since the original spillway failed. Finally, got on the computer and subscribed. Your work in reporting on the progress is excellent. I thoroughly enjoy your presentations.
Stan Gray welcome aboard!
Huge project. I have a cousin who is a dam engineer in Washington State. He is currently working on this project. His company engineers and rebuilds hydro gates in all electro dams west of the Mississippi. (yes his motor home is much bigger than mine lol.)
I find this project fascinating and will be waiting for more updates. Thank goodness for youtube as regular tv is a wasteland for the most part. Thanks Juan!
Patrick O'Guinn yep!
Excellent educational series, Mr. Browne! Please create a playlist of this series and I will share it far and wide! One thing that rarely comes across in these videos is the absolutely MASSIVE scale of this project. It's just hard for the human mind to grasp things millions of times larger than ourselves. (P.S. It's really nice to see something about the dam in which some damn fool isn't talking about the dam "green spot"!!!)
Juan, another great look from boots on the ground. With all the discussion about which concrete placed where .... just glad to see the job completed using best construction practices. Kiewits track record proven.
Really a great job they are during. It's nice they are letting you in to inform us. Look for more. Tks.
More answers to questions I didn't know I had. Better than excellent. And...that is a LOT of RCC.
Thanks for the videos Juan thank you for you time. I love watching your channel. Airplanes and engineering my favorite things. If you get a chance thank those busy men for taking time out of their busy day to help us better understand what is going on.
Fantastic Job FO Juan...!! What a great construction tour..!!!!
Great coverage Juan! Thanks so much!
Great report, Juan! Thanks for keeping us up to date!
Thanks a lot for your work on this Juan. Great to get an up close look and some facts.
Thank you Juan. Amazing to see the progress being made.
Great series Juan information no disinformation thank you
Juan, you must be well over your hundred hour annual plan in the Mighty Luscombe
I absolutely love this channel you do a great job of explaining what's going on really appreciate it thank you so much
Thank all of you for the tour and the continued real information u put out sir
I was blown away by the pictures in Part 3 about how close they came to eroding away underneath the emergency spillway. That could have been a massive disaster with lots of loss of life.
Another very informative video Juan thanks for your hard work, I've learned a lot from these reports. One thing that people need to know is the importance this water reservoir is to central California and to the food that feeds a lot of hungry mouths all over the USA.
Fantastic series! Thanks for the awesome updates!
excellant series Juan! thank you very much!
Nice job with the reports. I continue to enjoy your videos.
Thank you I've been waiting😊
Thank you for your continuing informative reporting on this amazing engineering project. You might consider an offshoot project to look into the maintenance and monitoring on other California dams, to see if that has improved at the other dams after the Oroville near disaster.
Excellent work on reporting Juan!!!
As always great info better by a ton than msm real news and education and nice real family guy telling us the info great stuff from redditch uk
Thank You so much for the real info !Nice to see whats going on and just how big of a job this is!
Great question Juan, I also assumed the limiting factor in water flow was the RCC hardness, not the wall height. Keep up the good work.
Excellent report, and series Juan be up the great work!
Wow, caught this one nice and early! That plunge pool sure is deep. Great video, gives a real sense of scale which you don't get from the overhead or distance views.
The fixed point GPS that you are referring to is called "Differential GPS." By placing a GPS receiver on a known lat/long point, you can backwards calculate the error introduced into the GPS signal and greatly increase the accuracy of the GPS signal. Of course it requires simultaneous readings from the Differential GPS receiver and the receiver at the location in question.
Totally incredible video and the information on this is great to ..Thank you so so much for your videos too...
Again, a big thanks Juan! Keep 'em comin"!
Fine job Juan
Juan great series I've been watching from day one and telling folks here on the east coast about it usually they ask if they found any gold
I hope they give out more tours so that the people will be inform what happen.
Great!
I've been wondering about the layering of new on top of cured concrete. ( how it sticks etc) I heard him say preparing the cured for new next year(taking it down to expose the aggregate.) and rock bolts. Excellent questions Juan.
Engineering background shows, as opposed to journalism background. Just the man for the job. One aspect of the project is deadline. You always cross your fingers that nothing breaks and what redundancy is necessary. Waiting on parts or pieces is a killer.
Wow, great job. Thanks Juan
Can't wait to hear the next major update, since most of the video and the stuff was done back nearly 2 weeks ago. Hope to see where they're going with it now.
Great job juan 👍