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Bridge collapse in Miami

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Somebody has some splainin to do....that thing was just opened a week or two ago. The construction firm will blame the engineering firm and vice versa.

Edited by RaoulDuke79

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7 minutes ago, DC Tom said:

 

:huh:

 

"We built it in five days, it won't be finished for about a year.  But let's start using it."

 

Seriously?  

i don't believe it was opened yet, thought the article stated was not open to pedestrian traffic yet.

 

yep, here it is

 

There were as yet no stairs or ramps to the bridge, which was not open. Opening was scheduled for early next year.

Edited by plenzmd1

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Am I seeing this right, the bridge crosses over 6 lanes of traffic plus a median, but has no middle support and no suspension?  I have absolutely zero engineering knowledge, but that doesn't sound like the best of plans to me (yeah, hindsight, I know).

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Just now, shrader said:

Am I seeing this right, the bridge crosses over 6 lanes of traffic plus a median, but has no middle support and no suspension?  I have absolutely zero engineering knowledge, but that doesn't sound like the best of plans to me (yeah, hindsight, I know).

It would have been fine except for that one fat chick.

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2 minutes ago, shrader said:

Am I seeing this right, the bridge crosses over 6 lanes of traffic plus a median, but has no middle support and no suspension?  I have absolutely zero engineering knowledge, but that doesn't sound like the best of plans to me (yeah, hindsight, I know).

 

But it only weighed 950 tons.

 

Who are our resident structural engineers?

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18 minutes ago, shrader said:

Am I seeing this right, the bridge crosses over 6 lanes of traffic plus a median, but has no middle support and no suspension?  I have absolutely zero engineering knowledge, but that doesn't sound like the best of plans to me (yeah, hindsight, I know).

You're not seeing it right.  It utilized a truss type construction.

 

Look at photos before the collapse; you'll notice huge diagonal members connecting the floor of the bridge to the roof of the bridge; those were there to provide the vertical load strength you are asserting the bridge didn't have.

 

 

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37 minutes ago, shrader said:

Am I seeing this right, the bridge crosses over 6 lanes of traffic plus a median, but has no middle support and no suspension?  I have absolutely zero engineering knowledge, but that doesn't sound like the best of plans to me (yeah, hindsight, I know).

 

I don’t think that’s how the Romans would have done it. 

 

What a tragedy! 

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Years ago they built the I-94 bridge, over the Calumet River here, down river and floated the new span into place... It's still holding after a couple decades 

 

I hope I didn't just jinx it with this "instant bridge talk."

33 minutes ago, Augie said:

 

I don’t think that’s how the Romans would have done it. 

 

What a tragedy! 

What is FIU noted for?  Doctors and lawyers?  I don't think engineering.

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1 hour ago, KD in CA said:

 

But it only weighed 950 tons.

 

Who are our resident structural engineers?

I got this

 

 

Jet fuel can't melt steel beams.

 

 

 

 

 

 

Anyway, this is sad. Happened at MIS back a decade ago after a race.  Only half a dozen killed that time. This sucks. 

Edited by Boyst62

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1 hour ago, Helpmenow said:

Where was the testing and who inspected it. Pee wee herman

Probably an army of our crack government inspectors and regulators went over it with extreme diligence. 

Edited by Dante
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20 minutes ago, Dante said:

Probably an army of our crack government inspectors and regulators went over it with extreme diligence. 

Scary thought

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34 minutes ago, Chef Jim said:

Yikes.  My wife graduated from there. 

Thankfully before that ****ty bridge was put into place.

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I heard that maybe they were doing a stress test on it when it came down, but that wouldn't make sense to have done that with the road open.

 

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1 hour ago, RaoulDuke79 said:

Thankfully before that ****ty bridge was put into place.

 

Yeah by only three and a half decades. :lol:

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4 hours ago, Helpmenow said:

Where was the testing and who inspected it. Pee wee herman

I think it was still being built.  I caught where they said it was due to open NEXT January???  What would be taking so long???

1 hour ago, snafu said:

I heard that maybe they were doing a stress test on it when it came down, but that wouldn't make sense to have done that with the road open.

 

It's Florida.

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14 minutes ago, \GoBillsInDallas/ said:

Wow!  Lucky the one (looks like an SUV) leaving, sucks for that light vehicle turning right.

 

Some gotta win and some gotta lose... Looks like vehicle making right gots the blues... :(

 

The story of good luck and bad luck on the peninsula of the sun. 

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worst since cables snapped on the Brooklyn Bridge in the early 80s and fortunately only had one person badly hurt.

 

 

Edited by row_33

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On 3/15/2018 at 2:43 PM, Fadingpain said:

You're not seeing it right.  It utilized a truss type construction.

 

Look at photos before the collapse; you'll notice huge diagonal members connecting the floor of the bridge to the roof of the bridge; those were there to provide the vertical load strength you are asserting the bridge didn't have.

 

 

It's actually more a suspension bridge. If you notice from the pictures, the members slant at different angles, putting uneven strain on each girder. While it can work as a truss, it's not how you would design that system to work. It would require each member be of different size and strength, which they clearly weren't.

 

The construction company built and placed the span before the cable support system that is supposed to take up the load.

 

 

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