Have any of you seen the way the metal broke Heres a science experiment for you get a peice of 9guage wire and bend it till it brakes you will notice that it is not a clean cut unlike some of the metal on the bridge
some one new they were going to hell for what they did so they cut it with a square God bless that ****** Any way
Huh? What are you trying to say? That someone wanted the bridge to fall, on purpose?
The experiment you propose is a bad example. Better would be to cut 3" length of drinking straw, then place it between your thumb and finger. Notice how much pressure it can withhold. Then use a pencil or fingernail to put a small dent in the side of the straw. The straw will collapse with just a small amount of pressure. This was a compressive failure that brought the bridge down.
This is the war on america I have lost a lot of faith in the people of chicago land its like north vietnam around here no one really trusts any one between the free masons the mob and george bush any thing is possible I wish I was just parnoid.And getting back to my point.I have never seen steel or metal breack that clean.
The tensil strength of wire is much higher than any metal construct of greater density. Second, were talking about a bridge that weigh Hundreds of thousands of tons, no the four or five pound of twisting force you are directing on a piece of wire.
The steel girders on the north side of the bridge were pulled off of their supports (see the linked picture in the video notes). I believe, based upon what I have seen, that the beams were pulled off due to a compression failure in the span over the river. I'm working on a second video to help illustrate this better.
Then how did cars end up UNDER the center section. Clearly in the security cam video the north end falls last. The only way for cars to be under the center section is if the south approach fell first and they went in the river before the center section fell. The south approach is canted to the east, the other sections fell straight down. It's like cutting down a tree. The cant shows the failure to be in south approach section.
I think what hes saying is that the span fell on the south side first but the north end of the bridge that is not part of the span fell before that. That would explain the shaking before the fall.
And your point is...what exactly? Are you an engineer, or did you stay at a Holiday Inn Express last night? I'm not saying that you cannot maintain a bridge and use it at the same time. So, go home. You're out of your league here.
But, if you look at the video the center section falls BEFORE the section you refer to tilts up. Also the center section is NOT falling straight down. The end closer to you is lower. If the fall started on the other end how could that be?
I assume you are referring to the CNN bridge security cam video. That video STARTS several seconds into the collapse. In the first frame of the video there is already concrete dust curling up from the center of the span, the lower truss is bending, and there is noticeable tenting of the roadway.
In the enhanced version of this video (search on Enhanced II Minneapolis Bridge Collapse Security Camera View) You can see that it is a puff of smoke fromn the exhaust from an 18 wheeler.
Once the span failed, it pulled the Green I-Beam stringers from the NORTHERNMOST concrete lip that it rested on. It sat on the edge of that lip for a few seconds, then the edge of the concrete failed, dropping the north section down.
Two things happened: 1) Construction workers were not just resurfacing the bridge - they were RE-Decking the bridge. In breaking up the old concrete, and moving traffic to single lanes, they drastically changed how the loads on the span were being distributed. This is beyond dispute. 2) When they put traffic back on the fresh cement and started breaking up the remainder of the old concrete deck, the span failed.
I doubt this explanation. That bridge ought to be able to handle diesel trucks bumper to bumper in all lanes with no problem. I bet that the collapse began at the southwest end. That would be outside of the camera video, to the right of the image frame.
Of course the bridge ought to handle 5000x times the weight it was carrying at the time it collapsed. The point of fact is that it barely carrying *ANY* weight when it DID collapse.
Stranngee. I never thought of the connection between the Semi truck and the school bus both being at the same spot having an impact on it. This is great, probably the best explaination I've seen yet. The news is kinda BSing around it quite a bit.
I have posted photos of the separation referred to at 33 seconds - the I beams were PULLED OFF their supports. You can see the link by reading the details of this video.
Have any of you seen the way the metal broke Heres a science experiment for you get a peice of 9guage wire and bend it till it brakes you will notice that it is not a clean cut unlike some of the metal on the bridge
some one new they were going to hell for what they did so they cut it with a square God bless that ****** Any way
Dan1234111 4 years ago
Huh? What are you trying to say? That someone wanted the bridge to fall, on purpose?
The experiment you propose is a bad example. Better would be to cut 3" length of drinking straw, then place it between your thumb and finger. Notice how much pressure it can withhold. Then use a pencil or fingernail to put a small dent in the side of the straw. The straw will collapse with just a small amount of pressure. This was a compressive failure that brought the bridge down.
jrhelgeson 4 years ago
This is the war on america I have lost a lot of faith in the people of chicago land its like north vietnam around here no one really trusts any one between the free masons the mob and george bush any thing is possible I wish I was just parnoid.And getting back to my point.I have never seen steel or metal breack that clean.
Dan1234111 4 years ago
The rivets broke, there was no clean break. This is an engineering failure, not a homeland security failure.
jrhelgeson 4 years ago
The tensil strength of wire is much higher than any metal construct of greater density. Second, were talking about a bridge that weigh Hundreds of thousands of tons, no the four or five pound of twisting force you are directing on a piece of wire.
lazyidiotofthemonth 3 years ago
So are you saying that a section of the north side fell first because of the compression failure then the center span fell second???
eluko79 4 years ago
The steel girders on the north side of the bridge were pulled off of their supports (see the linked picture in the video notes). I believe, based upon what I have seen, that the beams were pulled off due to a compression failure in the span over the river. I'm working on a second video to help illustrate this better.
jrhelgeson 4 years ago
Then how did cars end up UNDER the center section. Clearly in the security cam video the north end falls last. The only way for cars to be under the center section is if the south approach fell first and they went in the river before the center section fell. The south approach is canted to the east, the other sections fell straight down. It's like cutting down a tree. The cant shows the failure to be in south approach section.
rewey001 4 years ago
I think what hes saying is that the span fell on the south side first but the north end of the bridge that is not part of the span fell before that. That would explain the shaking before the fall.
eluko79 4 years ago
No . . I think it fell as follows
1. South approach failed on the east side and fell to the east.
2. Second south approach fell.
3. center section fell.
4. north approach canted and fell
rewey001 4 years ago
No, not really. There is no conspiracy here. This was an engineering failure, not a Homeland Security failure.
jrhelgeson 4 years ago
And your point is...what exactly? Are you an engineer, or did you stay at a Holiday Inn Express last night? I'm not saying that you cannot maintain a bridge and use it at the same time. So, go home. You're out of your league here.
jrhelgeson 4 years ago
But, if you look at the video the center section falls BEFORE the section you refer to tilts up. Also the center section is NOT falling straight down. The end closer to you is lower. If the fall started on the other end how could that be?
rewey001 4 years ago
I assume you are referring to the CNN bridge security cam video. That video STARTS several seconds into the collapse. In the first frame of the video there is already concrete dust curling up from the center of the span, the lower truss is bending, and there is noticeable tenting of the roadway.
jrhelgeson 4 years ago
In the enhanced version of this video (search on Enhanced II Minneapolis Bridge Collapse Security Camera View) You can see that it is a puff of smoke fromn the exhaust from an 18 wheeler.
rewey001 4 years ago
Once the span failed, it pulled the Green I-Beam stringers from the NORTHERNMOST concrete lip that it rested on. It sat on the edge of that lip for a few seconds, then the edge of the concrete failed, dropping the north section down.
jrhelgeson 4 years ago
Two things happened: 1) Construction workers were not just resurfacing the bridge - they were RE-Decking the bridge. In breaking up the old concrete, and moving traffic to single lanes, they drastically changed how the loads on the span were being distributed. This is beyond dispute. 2) When they put traffic back on the fresh cement and started breaking up the remainder of the old concrete deck, the span failed.
jrhelgeson 4 years ago
I doubt this explanation. That bridge ought to be able to handle diesel trucks bumper to bumper in all lanes with no problem. I bet that the collapse began at the southwest end. That would be outside of the camera video, to the right of the image frame.
TRAVISTOWN 4 years ago
Of course the bridge ought to handle 5000x times the weight it was carrying at the time it collapsed. The point of fact is that it barely carrying *ANY* weight when it DID collapse.
jrhelgeson 4 years ago
you dont see this as bs as well? lol
jdoubleu06 4 years ago
WOW dude. You need to chill a little, bro. Are you even from here??
NixVegaGT 4 years ago
Stranngee. I never thought of the connection between the Semi truck and the school bus both being at the same spot having an impact on it. This is great, probably the best explaination I've seen yet. The news is kinda BSing around it quite a bit.
Raiinstorm 4 years ago
I have posted photos of the separation referred to at 33 seconds - the I beams were PULLED OFF their supports. You can see the link by reading the details of this video.
jrhelgeson 4 years ago