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PostPosted: Sun Jan 10, 2016 7:35 pm
 


Title: Ontario's Nipigon River bridge fails, severing Trans-Canada Highway
Category: Misc CDN
Posted By: N_Fiddledog
Date: 2016-01-10 18:20:40
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PostPosted: Sun Jan 10, 2016 7:35 pm
 


Not sure why a bridge would fail like this. But this is why we should always have a primary and a secondary highway.


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PostPosted: Sun Jan 10, 2016 9:00 pm
 


I wonder if that's why BC spends like FIVE BILLION dollars to make a bridge...


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PostPosted: Sun Jan 10, 2016 9:09 pm
 


No one would want to pay for it.

Heres hoping it is fixed by grad. Not a prob doing the US route up but getting her and all her stuff back through the states maybe a trick. Not to mention the extra miles. I guess I like her enough to get her a ticket to N Bay and a storage locker in T Bay till this is all sorted.


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PostPosted: Mon Jan 11, 2016 7:51 am
 


Canadian_Mind Canadian_Mind:
Not sure why a bridge would fail like this. But this is why we should always have a primary and a secondary highway.


There are a number of ways. If the metals weren't properly accounted for temperature variance - falling temps could have meant that the wires would shrink more than expected. The same with the supports in the ground - one side may be differing metals than the other and cold means one contracts faster than the other. The decking may also expand and contract at a different rate than the structure the decking is held up by.

That's why bridges usually have those interlocking metal forks called 'expansion joints' that let the bridge flex in different temperatures.

Image


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PostPosted: Mon Jan 11, 2016 8:25 am
 


$1:
Ashley Littlefield, who lives in nearby Dorion, Ont., witnessed the failure Sunday afternoon as she was driving with her husband.

"As we turned [onto the highway], we saw the whole bridge — a kind of big gust of wind came underneath it and blew it up and then it came back down," she said, adding it shifted by about half a metre.

"We watched two pickup trucks come flying over. … They didn't see us, didn't hear my horn honking, and they flew over and smashed their front ends down on the cement."


http://www.cbc.ca/news/canada/manitoba/ ... -1.3397915

8O

Wind has been responsible for many bridge failures through history. It's also why Engineers wear the "Iron Ring".


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PostPosted: Mon Jan 11, 2016 8:28 am
 


DrCaleb DrCaleb:
Canadian_Mind Canadian_Mind:
Not sure why a bridge would fail like this. But this is why we should always have a primary and a secondary highway.


There are a number of ways. If the metals weren't properly accounted for temperature variance - falling temps could have meant that the wires would shrink more than expected. The same with the supports in the ground - one side may be differing metals than the other and cold means one contracts faster than the other. The decking may also expand and contract at a different rate than the structure the decking is held up by.

That's why bridges usually have those interlocking metal forks called 'expansion joints' that let the bridge flex in different temperatures.

Image

I always thought that engineers were hired to prevent this. Someone needs their licence reviewed!


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PostPosted: Mon Jan 11, 2016 8:29 am
 


Someone buy Chinese steel??


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PostPosted: Mon Jan 11, 2016 8:57 am
 


fifeboy fifeboy:
DrCaleb DrCaleb:
Canadian_Mind Canadian_Mind:
Not sure why a bridge would fail like this. But this is why we should always have a primary and a secondary highway.


There are a number of ways. If the metals weren't properly accounted for temperature variance - falling temps could have meant that the wires would shrink more than expected. The same with the supports in the ground - one side may be differing metals than the other and cold means one contracts faster than the other. The decking may also expand and contract at a different rate than the structure the decking is held up by.

That's why bridges usually have those interlocking metal forks called 'expansion joints' that let the bridge flex in different temperatures.

Image

I always thought that engineers were hired to prevent this. Someone needs their licence reviewed!


I recall back in the 80's that silicon valley had so much coke being snorted, that a number of newfangled 'anti lock' and 'fuel injection' systems for cars were leaving people without brakes and engine power suddenly because the silicon dies were cracking under heat stress. One of the fundamental things we calculate when designing the dies!

Not only does someone need their license reviewed, but so do the supervising engineers that signed off on it! Unless of course, we are seeing something no one could have anticipated or had seen before, like at Tachoma Narrows.


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PostPosted: Mon Jan 11, 2016 9:30 am
 


So much for all those 'brilliant' and 'innovative' designs. :roll:

Reminds me of Los Angeles in the 1994 quake when so many new bridges that supposedly were the latest thing in seismic safety failed and so many of the old bridges withstood the quake simply because the engineers back on the old days built the ever-loving shit out of them.


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PostPosted: Mon Jan 11, 2016 2:42 pm
 


BartSimpson BartSimpson:
So much for all those 'brilliant' and 'innovative' designs. :roll:

Reminds me of Los Angeles in the 1994 quake when so many new bridges that supposedly were the latest thing in seismic safety failed and so many of the old bridges withstood the quake simply because the engineers back on the old days built the ever-loving shit out of them.


And, they didn't purchase their steel from the lowest bidder, China.

$1:
The steel for the bridge is being produced in India by Chinese company Jiangsu Zhongtai Steel Structure Company. The Times Colonist reports that steel fabrication is being halted after "inspections found it was not being built according to design.” Turns out the lifting lugs that are needed to move the bridge weren’t fabricated correctly — and the problem is so bad that the steel might have to be scrapped and the process started from scratch.

The Canadian Ironworkers Union said Victoria officials could have saved time and money if they had opted to use domestic steel rather than steel produced overseas.


http://www.americanmanufacturing.org/bl ... ng-itself1

Simply a case of getting what you pay for.


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PostPosted: Mon Jan 11, 2016 3:12 pm
 


Naturally, no one will be held to account for this failure.


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PostPosted: Mon Jan 11, 2016 7:06 pm
 


Wonder how long it will take to figure out what happened and why. oh and if they will be sacrificing new engineers or if the people in charge will wear it


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PostPosted: Mon Jan 11, 2016 7:08 pm
 


housewife housewife:
Wonder how long it will take to figure out what happened and why. oh and if they will be sacrificing new engineers or if the people in charge will wear it


The lowest person that they can blame and still look like their doing something all the while keeping their jobs and protecting their political masters.


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PostPosted: Mon Jan 11, 2016 7:31 pm
 


2Cdo 2Cdo:
housewife housewife:
Wonder how long it will take to figure out what happened and why. oh and if they will be sacrificing new engineers or if the people in charge will wear it


The lowest person that they can blame and still look like their doing something all the while keeping their jobs and protecting their political masters.


Sadly I think your right.


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