So true. The Japanese at least did that not infrequently. (high rank shared the danger). I wonder what those rail cars are loaded WITH? Its an interesting stunt ---- I have not heard of that being done before, maybe it is something the Chinese have successfully used to save a bridge before? Had never heard of that maneuver.74OA said:I bet there's not a single CCP commissar accompanying the brave train operators on those hugely dangerous missions.aggiehawg said:
How would you like to be working on those trains!
Yes, that does make sense of it now, thanks. It was unclear just what it was purporting to show, and the lack of follow up torrent stood out.American Hardwood said:It can make sense if the water is flowing in to a lower level. I'm thinking the water is rapidly flooding a tunnel or chamber compressing trapped air. Perhaps a gate or door of some type gives way due to the increased pressure and results in explosive decompression. The shockwave travels down the tunnel to this area and blows out the windows sequentially as the shockwave passes. The water that originally compressed the air finds another pathway to flow or follows the compressed air shockwave more slowly and doesn't appear in the video. That's my theory.titan said:What doesn't make sense is water then doesn't come flooding in despite broken glass. There is something strange going on.American Hardwood said:What exactly is this video depicting? Is the inflow of water into the subway pressurizing the air to cause these storefront systems to blow out? Kind of what it looks like.thomas20:29 said:
Wuhan subway...
Probably dead Chinese.titan said:So true. The Japanese at least did that not infrequently. (high rank shared the danger). I wonder what those rail cars are loaded WITH? Its an interesting stunt ---- I have not heard of that being done before, maybe it is something the Chinese have successfully used to save a bridge before? Had never heard of that maneuver.74OA said:I bet there's not a single CCP commissar accompanying the brave train operators on those hugely dangerous missions.aggiehawg said:
How would you like to be working on those trains!
I don't think this is going to have much effect. You are basically trying to resist a massive lateral load with a marginal vertical dead load. If the failure was to be in translation, meaning the sliding of the foundation in the direction of the lateral load then maybe this would help a little. But it seems far more likely to me that there would be a failure in bending. That load at the top of the moment arm, a little inertia from the bending action, and some eccentricity also produced by the bending, and I think we might see failure of the tensile side of the columns.titan said:So true. The Japanese at least did that not infrequently. (high rank shared the danger). I wonder what those rail cars are loaded WITH? Its an interesting stunt ---- I have not heard of that being done before, maybe it is something the Chinese have successfully used to save a bridge before? Had never heard of that maneuver.74OA said:I bet there's not a single CCP commissar accompanying the brave train operators on those hugely dangerous missions.aggiehawg said:
How would you like to be working on those trains!
I'm pretty sure it's just chinese propaganda.American Hardwood said:I don't think this is going to have much effect. You are basically trying to resist a massive lateral load with a marginal vertical dead load. If the failure was to be in translation, meaning the sliding of the foundation in the direction of the lateral load then maybe this would help a little. But it seems far more likely to me that there would be a failure in bending. That load at the top of the moment arm, a little inertia from the bending action, and some eccentricity also produced by the bending, and I think we might see failure of the tensile side of the columns.titan said:So true. The Japanese at least did that not infrequently. (high rank shared the danger). I wonder what those rail cars are loaded WITH? Its an interesting stunt ---- I have not heard of that being done before, maybe it is something the Chinese have successfully used to save a bridge before? Had never heard of that maneuver.74OA said:I bet there's not a single CCP commissar accompanying the brave train operators on those hugely dangerous missions.aggiehawg said:
How would you like to be working on those trains!
Edit: However, barring some sort of foundation failure, I don't think this bridge collapses unless the water reaches the top or it gets hit by something.
i'm sure the bats have all been moved out of harms wayHalifaxAg said:
When do the animals start lining up two by two?
........but what about the people? From the link just above:thomas20:29 said:i'm sure the bats have all been moved out of harms wayHalifaxAg said:
When do the animals start lining up two by two?
Xi doesn't care about it's people....he hasn't even visited that area since it started.74OA said:........but what about the people? From the link just above:thomas20:29 said:i'm sure the bats have all been moved out of harms wayHalifaxAg said:
When do the animals start lining up two by two?
"Beijing has limited information on the floods, prompting Chinese users of social media to upload images of downpours destroying towns and villages."
Ag for Life said:I'm pretty sure it's just chinese propaganda.American Hardwood said:I don't think this is going to have much effect. You are basically trying to resist a massive lateral load with a marginal vertical dead load. If the failure was to be in translation, meaning the sliding of the foundation in the direction of the lateral load then maybe this would help a little. But it seems far more likely to me that there would be a failure in bending. That load at the top of the moment arm, a little inertia from the bending action, and some eccentricity also produced by the bending, and I think we might see failure of the tensile side of the columns.titan said:So true. The Japanese at least did that not infrequently. (high rank shared the danger). I wonder what those rail cars are loaded WITH? Its an interesting stunt ---- I have not heard of that being done before, maybe it is something the Chinese have successfully used to save a bridge before? Had never heard of that maneuver.74OA said:I bet there's not a single CCP commissar accompanying the brave train operators on those hugely dangerous missions.aggiehawg said:
How would you like to be working on those trains!
Edit: However, barring some sort of foundation failure, I don't think this bridge collapses unless the water reaches the top or it gets hit by something.
Exactly what what would be fixed by Xi flying over the damage in a helicopter and frowning at it?Quote:
Xi doesn't care about it's people....he hasn't even visited that area since it started.
Xi only cares about the CCP, but he has visited flooded areas. For example from the link just above:CanyonAg77 said:Exactly what what would be fixed by Xi flying over the damage in a helicopter and frowning at it?Quote:
Xi doesn't care about it's people....he hasn't even visited that area since it started.
Water will only go through or over a spillway to the extent that the spillway can handle the volume of water. The Lake Houston Dam is a prime example of this during Harvey - the spillway was exceeded by the volume of water and water was going over the entire length of the dam at the peak.Gold Star ntxVol said:It won't go over the top of the damn. They should have a spillway off to the side so, if the level gets high enough, it will spill over, uncontrolled. It will spill over (uncontrolled) until the level drops back down below the spillway level. It should never go over the top of the damn.American Hardwood said:
The question for me is whether the dam can hold up if it ends up going over the top. I'm not enough of an engineer to run calculations but it would seem that the lateral force at the very top is going to increase dramatically even with a few meters of water running over the top.
My real point is that I despise the mind set that politicians have to "care", and that anything is gained by having them visit disasters.74OA said:Xi only cares about the CCP, but he has visited flooded areas. For example from the link just above:CanyonAg77 said:Exactly what what would be fixed by Xi flying over the damage in a helicopter and frowning at it?Quote:
Xi doesn't care about it's people....he hasn't even visited that area since it started.
"President Xi Jinping had visited another region of China, Anhui Province, on Tuesday. State media reports 21 rivers in the province have exceeded flood-limit levels."
That perspective is aging as evidenced by the dozens of airports, hundreds of bridges and thousands of kilometers of high-speed train lines Chinese engineers have designed and constructed in the last couple of decades--many of which are cutting-edge designs.fasthorse05 said:
Y'all can tell me if you agree with this comment, but it's the way I see most dictator/communist countries. There have been some posts about the very high academic achievements of the Chinese college students, which tends to be rote learning. I don't doubt that's the case.
My thought is the difference between high academic achievement and practical application is profoundly different. I'm not saying the Chinese don't have excellent, or quality, STEM employees, or that the 3 Gorges dam wasn't built well, but as a whole, they're not as likely to have the standards, the experience, and certainly regulations from hundreds of years of trial and error.
We screw things up to, but tend to learn from our experience, except politics.
Point being, whether it's the bridge, or a dam, I'm rarely surprised by communists projects being faulty. This applies to millions of bytes of stolen information from America. They still have to know how to apply it.
why would he frown? That's millions of mouths he doesn't have to feed anymore.CanyonAg77 said:My real point is that I despise the mind set that politicians have to "care", and that anything is gained by having them visit disasters.74OA said:Xi only cares about the CCP, but he has visited flooded areas. For example from the link just above:CanyonAg77 said:Exactly what what would be fixed by Xi flying over the damage in a helicopter and frowning at it?Quote:
Xi doesn't care about it's people....he hasn't even visited that area since it started.
"President Xi Jinping had visited another region of China, Anhui Province, on Tuesday. State media reports 21 rivers in the province have exceeded flood-limit levels."
A fascist dictatorship, indeed.fasthorse05 said:
Thanx, fellers.
Just wondering what the real world view is, versus my old Russia view of 25 years ago. I know they're not genuine communists, but closer to a mature fascist state with the way they decided to open up 30 years ago, but I suspected some of the "old" ways still applied.
Seems totally dependent on the weather at this point, in my view. But don't get too focused just on whether this dam fails or not. (Catastrophic.)AnScAggie said:
What are the real odds of the dam failing?
thomas20:29 said:why would he frown? That's millions of mouths he doesn't have to feed anymore.CanyonAg77 said:My real point is that I despise the mind set that politicians have to "care", and that anything is gained by having them visit disasters.74OA said:Xi only cares about the CCP, but he has visited flooded areas. For example from the link just above:CanyonAg77 said:Exactly what what would be fixed by Xi flying over the damage in a helicopter and frowning at it?Quote:
Xi doesn't care about it's people....he hasn't even visited that area since it started.
"President Xi Jinping had visited another region of China, Anhui Province, on Tuesday. State media reports 21 rivers in the province have exceeded flood-limit levels."