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Old 03-09-2018, 02:01 PM   #4441
tobyjug
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Re: Open Thread

You look at the bones of 3 deckers, and you just have to wonder at the horrors wrought by Johns Manville and subsequently by vinyl siding.
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Old 03-13-2018, 10:31 AM   #4442
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Re: Open Thread

It's not everyday a 328-footer comes down. This one just took place on 3/11...and was pretty graceful...it just melts away into history's dustbin:

https://youtu.be/SNku7jt1g7E
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Old 03-13-2018, 02:21 PM   #4443
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Re: Open Thread

That was a 28 floor government-owned tower demolished to make way for a 5 floor office building and 1100 car garage. So KY apparently didn't take care of this tower (built 1972) and basically let it rot? And now it's to be replaced by a grossly undersized building and a gigantic garage. Some great govt stewardship and planning going on there!
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Old 03-13-2018, 02:43 PM   #4444
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Re: Open Thread

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Originally Posted by Brad Plaid View Post
That was a 28 floor government-owned tower demolished to make way for a 5 floor office building and 1100 car garage. So KY apparently didn't take care of this tower (built 1972) and basically let it rot? And now it's to be replaced by a grossly undersized building and a gigantic garage. Some great govt stewardship and planning going on there!
Oh I totally agree with you that this is ridiculous, and wasn't defending them in the least. I was solely commenting on the graceful choreography of a well executed implosion. But, yeah, wtf is up with this!
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Old 03-15-2018, 10:41 PM   #4445
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Re: Open Thread

This bridge collapse was an awful tragedy. Anyone have any thoughts on how it could have happened?

https://www.nbcnews.com/news/us-news...people-n857011
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Old 03-15-2018, 11:23 PM   #4446
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Re: Open Thread

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Originally Posted by Lrfox View Post
This bridge collapse was an awful tragedy. Anyone have any thoughts on how it could have happened?

https://www.nbcnews.com/news/us-news...people-n857011
I'm guessing that the stay cables were not preloaded correctly and thus compromised the bridge's equilibrium which suddenly thrust the concrete into tension, hence the fail.

Render:
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Old 03-15-2018, 11:24 PM   #4447
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Re: Open Thread

Quote:
Originally Posted by Lrfox View Post
This bridge collapse was an awful tragedy. Anyone have any thoughts on how it could have happened?

https://www.nbcnews.com/news/us-news...people-n857011
I wonder if the support column on the canal side tilted out (because there was no balancing span pushing back.
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Old 03-16-2018, 08:54 AM   #4448
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Re: Open Thread

Quote:
Originally Posted by Arlington View Post
I wonder if the support column on the canal side tilted out (because there was no balancing span pushing back.
Wonder what they will say about the tilted skyscraper if this falls during an earthquake in San Fran. Must have been mother nature.
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Old 03-16-2018, 02:24 PM   #4449
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Re: Open Thread

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Originally Posted by datadyne007 View Post
I'm guessing that the stay cables were not preloaded correctly and thus compromised the bridge's equilibrium which suddenly thrust the concrete into tension, hence the fail.

Render:
My understanding is that the cable-stays were not yet in place (there was still a lot of construction to be done, apparently).

Also I've see speculation that there was some sort of tensioning work being done at the time of the failure, but it not well-sourced.
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Old 03-16-2018, 02:27 PM   #4450
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Re: Open Thread

Also - I like to think I'm a proponent of good design etc - but that does seem a little over-engineered for a relatively short pedestrian bridge?

... were the cable-stays meant to be essentially decorative? Or was the section above the canal somehow going to be cantilevered?
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Old 03-16-2018, 10:30 PM   #4451
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Re: Open Thread

VIDEO: https://www.cnn.com/videos/us/2018/0...idge-collapse/

(Note that the central structure and stay cables were not present, but the bridge was not designed as a cable-stay bridge. The span was to be self-supporting, per the design docs (example in the link at bottom). The stays were for extra rigidity during cat 5 hurricanes.)

NYT: https://www.nytimes.com/2018/03/16/u...ge-cracks.html

THREAD: https://twitter.com/PatriciaMazzei/s...03322497626114

BREAKING: Florida Department of Transportation says engineer from Figg team left voicemail on Tuesday warning of cracking in FIU bridge: “obviously the cracking is not good and something’s going to have to be, ya know, done to repair that.”

Voicemail was left Tuesday on FDOT employee’s landline. Employee was not in office and didn’t hear voicemail til Friday.

FDOT bolded this part of its statement. The agency has gone through some length to place the responsibility for the bridge on FIU





No one has said at this point why the bridge collapsed or whether the “cracking” might’ve been an issue.

In the voicemail, Figg’s engineer also noted the company did not thing there were safety concerns due to the cracking.

--

Imgur amateur analysis, with one of the design docs:
https://imgur.com/a/2G5Fk

Armchair engineer analysis (I agree with this analysis and he does a great job explaining it - it appears to be a post tension failure)

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Last edited by datadyne007; 03-17-2018 at 12:16 AM.
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Old 03-22-2018, 03:26 PM   #4452
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Re: Open Thread

iAmM thinkin DANGER TO BOSTONIESE PEEOPLes here:

http://www.dailymail.co.uk/sciencete...e-station.html
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Old 04-05-2018, 09:50 AM   #4453
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Re: Open Thread

Ha!

We’re Ending Fixer Upper So We Can Explore Our New Passion for 1970s European Brutalism

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See, Jo could only pretend to care about the special touches that make a house a home for so much longer. And I woke up one morning and said to myself, “Chip, you don’t give a hockey puck if these homeowners chose a reading nook in the playroom or a Juliet balcony off the master bath.” After some reflection and time with our pastor, we realized that what we really wanted to do was to cram a harsh, unwieldy post-war aesthetic down people’s throats.

So, no more shiplap. No more driving around in a pickup truck. No more lies.

Now we can say to the Smiths and the Prestons and all the other good families we’ve been blessed to work with: you are meaningless specks in the face of mechanization and the worker-state. Here is your concrete cube. We don’t care if you like it. It is functional enough for your purposes. Get over yourselves.
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Old 04-05-2018, 10:29 AM   #4454
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Re: Open Thread

^ If only this were true....
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Old 04-06-2018, 02:22 PM   #4455
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Old 04-06-2018, 02:37 PM   #4456
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Re: Open Thread

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Old 04-06-2018, 02:47 PM   #4457
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Re: Open Thread

Thank you! I was looking for that one.
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Old 04-06-2018, 04:47 PM   #4458
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Re: Open Thread

^ Any resemblance to our own dear BB is purely coincidental, of course...
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Old 04-06-2018, 05:42 PM   #4459
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Re: Open Thread

A question I saw on another forum: Why isn't it call Brutism?
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Old 04-06-2018, 06:38 PM   #4460
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Re: Open Thread

They are both good. The first one is great.
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