Posted on 03/16/2018 8:55:54 AM PDT by Navy Patriot
"FIU is about building bridges and student safety. This project accomplishes our mission beautifully," said FIU President Mark B. Rosenberg said in a statement earlier this month. "We are filled with pride and satisfaction at seeing this engineering feat come to life and connect our campus to the surrounding community where thousands of our students live."
(Excerpt) Read more at yahoo.com ...
Why didn’t the propellers keep it airborne?
Sure, aside from the radioactive metal contamination, it's just fine.
I’m not an engineer so maybe am ignorant. But, to look at some older bridges such as this, which have stood the test of time, doesn’t that indicate that bridge technology, laws of physics, etc have been well developed in that area? Were they doing something completely outside the box of conventional construction?
Looks like a prefab steel span would have been much cheaper and better in retrospect much better....
I'm not arguing for Chinese steel to be allowed into the USA. I'm saying that the slogan "chinese steel" is a cheap cop-out which deflects the truth of the matter - 100% responsibility due to corrupt, stupid planners and government people right here in the good old USA
Is this Debbie Wasserman Schultz’s district? You can bet the builders met all the PC criteria, with the exception of being competent.
thanks
The engineer’s ring. A friend of mine wore one. This story is especially relevant to this incedent.
“I read where the original design had the walkway supported with cables from a tower - none of which is seen at the collapsed walkway.
Sooo, maybe they forgot the supports?”
That’s my take. They removed the center shoring without any of the tower superstructure in place. Some folks have said the tower had been erected but the supporting cables had not been installed. I did not see the tower in the pix (and now someone will post a pix where the the tower is plain as day, duhhh) but the point is, the suspension aspect of the bridge was simply not there. The suspending cables were definitely not there. So that makes the tower kind of...useless.
There’s nothing wrong with the basic design, there are many many of those bridges in use all over the world, it’s more or less just a single tower (instead of conventional arch-tower) suspension bridge. (I oversimplify of course)
But to think the bridge could support itself w/o the suspension AND without the center support is like 3rd grade stupid.
Somewhere, there's an engineer who said "don't do that." He's been fired.
Yeah, but think of the Carbon Footprint!!!
Not having a temporary center support in place was ‘shear’ stupidity.
It looked to be too long a span without extra support somewhere.
Question not being asked by the media. Why was a cable stayed bridge raised up and it’s lifting supports removed before the cable stays and tower were built?
Somewhere, there’s an engineer who said “don’t do that.” He’s been fired.
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Perhaps someone was more interested in meeting a project deadline than in doing it right.
Hell. It happened with the classic disaster of the Challenger Shuttle launch explosion. Engineers said don’t launch, it’s too cold for the seals. Project managers ignored them. People died. A $4B dollar spacecraft was destroyed.
I see what you did there.
“Somewhere, there’s an engineer who said “don’t do that.” He’s been fired.”
Somewhere there are three engineers who overruled him who are making frantic phone calls to their E&O insurers and/or retaining the best attorneys they can.
Agree. Just on visual. Plus as I commented yesterday, there was nothing to prevent torquing (twisting) forces from literally liquefying that thing should they get going.
Sooo, maybe they forgot the supports?
Sort of, ...the bridge was built parallel to, and alongside the highway, then rotated on wheeled supports across the highway and settled on it's end piers.
Then they removed the wheeled supports to clear the highway, and over a few days, proceeded to finally tension and prepare the bridge for use.
The supports should not have been removed until the finally tensioned structure had lifted it's self off the supports.
Maybe so. How about Chinese steel? And Chinese fasteners and related hardware all sold as being inspected, tested and certified?
Wouldn’t be the first time.
What was the name of that Japanese company not long ago who was selling substandard steel as inspected and certified top quality?
Is this why President Trump is re-building American steel?
So we can trust what is built with it, instead of suddenly being killed by it?
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