Here's an article without a paywall, about the sinking of the condo building. Measured in the 1990s as 2 mm/year. Apparently this was built on "reclaimed" (i.e. filled) wetlands.
Link
The NTSB has identified apparent causes and made a number of recommendations, based on investigation of the March 2018 fatal crash. An abstract is available now and full report will follow. https://www.ntsb.gov/news/press-releases/Pages/NR20200225.aspx
This article links to the TxDOT letter, and also describes a bit about a PR campaign FIGG used to try to change TxDOT opinion. https://www.ccbiznews.com/news/txdot-letter-to-coastal-bend-blasts-bridge-engineers
The only connection I have with airplanes is as a passenger, but I live outside of Tulsa under a flight pattern for TUL and all the remaining American 737 MAX are being ferried here from storage at Roswell as Tulsa has the largest maintenance facility. I thought you might like to see the two...
Typical for many engineering projects, the selection process was two-step: first review of proposals, and second an interview. The first step was short-listing the five proposals that were submitted. If you are interested, the selection committee and their votes are in the scoresheet folder...
Six more companies are agreeing to settle lawsuits, including FIGG and Bolton Perez & Associates. [link ]https://www.nbcmiami.com/news/local/More-Defendants-To-Settle-Lawsuits-in-FIU-Bridge-Collapse-512530852.html[/url]
In conventional construction, bridges are built in situ. However, given ABC, this span had a number of foundation changes: from removing shoring to being placed on the transporters to moving over irregular ground to being placed on piers. Maybe these were similar to some level of seismic events...
Thanks, jrs_87 and saikee119 for the responses. It is terribly unfortunate that the FIGG analysis resulted in designing a larger diagonal 2 compared to others, but not a larger diagonal 11.
One thing I've been wondering: Why did both ends of the bridge not crack similarly? And can anything be learned from the fact that they didn't?
Up to a point, it seems they did. On Feb. 6, 2018, Bolton Perez & Associates performed a visual inspection of cracks on diagonals 3 and 10 after PT...
Although these are signed plans, there is a more recent, different set which doesn't seem to be available. These plans don't show the bridge in its final location, shifted 11 feet to the north, so that the pylon pier is on fill next to the canal. Page 18 of the OSHA report shows the true...
Today's article from the station covering the FIU bridge trial reveals some FIGG text messages, although just one from Denney Pate's phone, as well as some of the differences between the Bolton Perez meeting minutes and the FIGG version of meeting minutes...
If you haven't seen it yet, there was an on-board video of the move, with the camera on the north end. This clearly shows the north end (at least, maybe it was the entire span) rocking from side to side, starting around 0.45 into the video. Link
And is there any chance a settling substructure...
According to the contract between FIU and Bolton Perez, The Corradino Group, Inc. was a subconsultant with the task of Structural Engineering/ Bridge Inspection. All the contracts (and other files of interest) can be found here: Link
Even though these were 100% sealed, there must have been later construction drawings, because these do not show the span shifted to the north, with the pylon base in the SFWMD canal. I am not an engineer but rather know waters well, and I've always wondered about how the shift affected the...
