RandomTaskkk: "Cable snaps in one or other of the right hand stays (perhaps closest, hard to say?)"
Yeah.. it happens so fast..
I can't single step the video, but kept clicking back to 00:37 from 00:38, and it looks like a truck/bus passes by the "closer" right side stay, then there's an almost...
Unrelated to the FIU bridge, but compare the reactions and closures after finding a cracked beam in this SF structure to not even closing the road under the FIU span with MAJOR cracks. Another article said the total shutdown was "out of an abundance of caution" - caution was completely missing...
Just saw this about OSHA fines. Still thinking how Navarro Brown wasn't hooked to safety harness, and the other worker hooked up when he heard/felt movement. I can't imagine people working up there with those big cracks at 11/12/deck without ensuring they were hooked up safely...
I always thought that message from Pate was kind of goofy. When I first heard it, I thought it was from some burnout (forgive me for being judgemental) because there was no "drive" or authority to it like I'm used to hearing from senior engineers.
I'm still not sure what to make of it...
"Stays on the eastern span of the bridge had been remade, with huge costs," said Royer Carfagni, the Parma University lecturer, "But it was thought that the problem was not critical on the western span, which is the one that collapsed."
Does anyone know why the east span stays were rebuilt, or...
to TME: I just thought about WHO was supposed to inspect this bridge? When I put in underground electric service, the city inspector came out to make sure the trench was 18" deep, then did a final when completed... very simple job with two inspections.
Assuming this bridge had a typical...
This article talks about corruption in construction (almost halfway down). Has a lot of photos.. updated today with a lot of victims.
"There were also concerns the Italian mafia could have contributed to the bridge's collapse by their construction companies being involved in maintenance work -...
thebard3: "The link is Italian language for anyone who can read it"
Attached is translation
It may explain why the cables are flanked on the "concrete stays" of the NW tower. A different article said concrete stays are a unique feature, but I don't understand the point of doing it (so the...
to RickyTickyTavi:
First photos (~2/24/18, pre-move, after shoring removed, only supported at ends as in practice) showed a small diagonal crack on east side of #11 that continued north along the deck. In these photos, that crack expanded and #11 appears to have moved north about 1/2" - #12 was...
Unreal. A clear indication to do some serious analysis of the forces at that connection.
I wonder if #1-2 cracked at all.. they'd already tightened those rods and it held.
Won't do it now, but will go back and see how this fits with GreenLama's theory - these cracks show initial step of...
Good job - I wouldn't even know who to contact.
This answers a question I had from the long, detailed article. The docs the engineers looked at are still available to the public.. when article said ~"docs not available except to those close to the investigation" it meant those that Miami...
About documentation. This was the best/detailed article. http://www.staugustine.com/news/20180616/fiu-had-grand-plans-for-signature-bridge-but-design-had-key-mistake-experts-say
It sounds like they made a basic public records request for the 2000 pages of calculations.
"The Herald obtained...
Tomkat: I can't answer your question about cold joint strength (details outside my field), but it's been discussed. I'd assumed #11/12 slid off the end of deck after breaking at cold joint, but recently someone posted a different view of #12's end that shows it broke below the cold joint...
I didn't know if this was typical, but noticed the small pieces, as if an "explosion" occurred... also small pieces in the rubble where #9 punched through the canopy. Still wondering why ~5 ft is missing from #11 with rebar/PT rod/duct and PVC pipes still intact.
As discussed here, the...
One other thing (bugged me since someone asked "What happened to the cage?") - is this a welded or wired assembly, and is this the rebar MOJOJOHN said would shear when #11 moved north? Is hard to imagine the cage lifting or shearing without affecting the lower rod anchor (seems cage moving out...
