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FIU had grand plans for 'signature' bridge. But the design had a key mistake

miamiherald.com

11–20 of 153 posts

Re: FIU had grand plans for 'signature' bridge. But the design had a key mistake

#11
post #6

This is a really good article. Amazing how a dozen+ different things combined to produce the unfortunate result. Perfect case study in there being no such thing as a singular 'root cause'.

I concur on the quality of the article, but I would say it goes further: The Miami Herald is even suing to get public records requests filled in the interest of journalism. They’re doing an exceedingly good job at trying to get answers to tough questions.

Re: FIU had grand plans for 'signature' bridge. But the design had a key mistake

#12
post #9

The Fountainhead Chapter I; Howard Roark to the Dean --- "Why do you want me to think that this is great architecture?" He pointed to the picture of the Parthenon. "That," said the Dean, "is the Parthenon!" "So it is." "I haven't the time to waste on silly questions." "All right, then." Roark got up, he took a long ruler from the desk, he walked to the picture. "Shall I tell you what's rotten about it?" "It’s the Par…

Then again the Parthenon has has been around for nearly 2,500 years (finished in 432 BC), and during that time has been considered by people from all over the world one of the most beautiful buildings ever built.

What building by modern architects will even be around 500 years from now, much less revered as an example of beautiful architecture?

Re: FIU had grand plans for 'signature' bridge. But the design had a key mistake

#13
post #7

There are some parallels with software. Encryption for example. Don't deviate from standard implementations unless you really know what you're doing. And even then, review it and review it again. Preferably by a separate expert.

The parallels do not go very far, unfortunately. When software fails, and kills people, it is rarely investigated. It's development is rarely investigated. When that is done, however, the differences widen even further. There is no degree to which software development can be done incompetently that criminal negligence charges can succeed. We saw this proven within the past decade when some of Toyotas cars engaged in "unintended acceleration." Despite the developers being denied even tools as basic as a bug tracker, and despite following only 4 out of over 90 'required' or 'suggested' coding practices advised by the automotive industry, the courts ruled that because no actual standards exist for software development, the management of the company could not be held criminally liable for the deaths they caused.

This problem will re-appear. When a bridge collapses, if they found out the company building it hired the cheapest engineers right out of school, denied them access to tools or training needed to do their job, kept them removed from decisions about scheduling, ignored any concerns voiced about needing more time for proper development and testing, multiple people (the ones who wear suits) would go to prison and the company would likely be destroyed. If a few executives were put in prison over shoddily made software rushed to market, I imagine we would see changes in how software is developed of monumental proportions. But not until then, apparently. And that day doesn't seem to be coming soon. Perhaps self-driving cars will herald such a wake-up call. I know I'm certainly not trusting one until things change drastically.

Re: FIU had grand plans for 'signature' bridge. But the design had a key mistake

#14
> At least one said that if so, it constitutes an avoidable mistake on a bridge that should never have been so complicated.

>“This is not a big project," Beck said. "It’s a darn pedestrian bridge.”

There is something to be said about not over-complicating designs, whether it be in actual construction or in software.

Re: FIU had grand plans for 'signature' bridge. But the design had a key mistake

#15
The article barely touches on the subject, but the bridge was really unnecessary, or necessitated only by the nonsensical urban design surrounding the university. The student housing is not only on the opposite side of a gigantic road from the campus, but it's further separated by a canal and then acre after acre of parking. If any attention had been paid, at all, ever, to the built environment this bridge would not have been needed in the first place.

Re: FIU had grand plans for 'signature' bridge. But the design had a key mistake

#16
post #11
post #6

This is a really good article. Amazing how a dozen+ different things combined to produce the unfortunate result. Perfect case study in there being no such thing as a singular 'root cause'.

I concur on the quality of the article, but I would say it goes further: The Miami Herald is even suing to get public records requests filled in the interest of journalism. They’re doing an exceedingly good job at trying to get answers to tough questions.

I am ignorant as to this whole story, but out of interest, why is it a bad thing to wait for the NTSB report?

Often it is good to wait for an entire report to nail down the facts before the witch hunt should begin, is there something in this case that means this isn't the best idea?

Re: FIU had grand plans for 'signature' bridge. But the design had a key mistake

#17

The article barely touches on the subject, but the bridge was really unnecessary, or necessitated only by the nonsensical urban design surrounding the university. The student housing is not only on the opposite side of a gigantic road from the campus, but it's further separated by a canal and then acre after acre of parking. If any attention had been paid, at all, ever, to the built environment this bridge would not…

You have to put the acres of parking next to the buildings! Otherwise the drivers would have to walk!!1!

Re: FIU had grand plans for 'signature' bridge. But the design had a key mistake

#18
post #9

The Fountainhead Chapter I; Howard Roark to the Dean --- "Why do you want me to think that this is great architecture?" He pointed to the picture of the Parthenon. "That," said the Dean, "is the Parthenon!" "So it is." "I haven't the time to waste on silly questions." "All right, then." Roark got up, he took a long ruler from the desk, he walked to the picture. "Shall I tell you what's rotten about it?" "It’s the Par…

This isn't the only example of that. Imitating an archaic form of architecture is often a homage.

Go to some modern temples/shrines in Japan. Check out the torii gates and any other classical looking structure. Compare the ones in wood to the ones in stone or concrete. They look identical.

If you look close, you'll notice the little details sticking out of parts of the design. It's almost always a part of Japanese wood joinery. But it's still in the stone copies. Is it bad design? Of course not. That simple, striking, beautiful, complicated wood joinery has its own unique aesthetic appeal, and shaving off features just because they aren't necessary is completely beside the point of aesthetic beauty. To say nothing of honoring the tradition of a difficult and highly effective craft.

Re: FIU had grand plans for 'signature' bridge. But the design had a key mistake

#19
> And in order to pull off the aesthetic, the bridge's designers had to make the diagonal supports beneath them a variety of different shapes and sizes. That complication may have led the designers to miss a crucial error, independent engineers who've examined the bridge's plans believe: One of the supports was not strong enough.

They aren't joking about the "variety of different shapes and sizes" for the diagonal supports. It's really incredibly ugly. In my view any "aesthetics" gained from the fake cables on the bridge are far outweighed by how goofy the whole thing looks when viewed from the side. It's really jarring, and I imagine that it would look rather cobbled together when walking over it.

I also was shocked by the reported "2000 pages of calculations" that 3 different structural engineers signed off on. I have a hard time imagining that none of these experts might have said at some point, "this is a bad bridge that should not be built!" even if mathematically it could have survived magnitude 10 earthquake. Which it clearly couldn't. I'm not an engineer but it ought to be outside the ethics of an engineer's role in approving a bridge design that appears to have redundancy (the cable stays AND the diagonal supports) when the cable stays are merely a foolish aesthetic choice. Doesn't seem much different than selling a car with an airbag icon on the steering wheel when no such airbag exists. It's a false claim to structural integrity.

One final thought- the PURPOSE for this bridge seems ill-conceived in the first place. Why is the campus divided by a highway to begin with?? But that's neither here nor there.

Re: FIU had grand plans for 'signature' bridge. But the design had a key mistake

#20
post #11

Earlier quoted context omitted.

I concur on the quality of the article, but I would say it goes further: The Miami Herald is even suing to get public records requests filled in the interest of journalism. They’re doing an exceedingly good job at trying to get answers to tough questions.

I am ignorant as to this whole story, but out of interest, why is it a bad thing to wait for the NTSB report? Often it is good to wait for an entire report to nail down the facts before the witch hunt should begin, is there something in this case that means this isn't the best idea?

I imagine the Herald doesn't believe that the NTSB (or any authority) necessarily has the canonical and final word on things, and thus the Herald sees itself as providing an independent viewpoint/assessment.

One of the undercurrent themes of this story is that, according to the herald, the construction company and FIU officials are well-connected politically. Possibly related to this is the fact that the Herald is suing the state for records related to the bridge [0]. These records were determined to be public but have so far been withheld from public release.

[0] http://www.miamiherald.com/news/state/article212489364.html

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