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  1. Wetlander

    Miami Beach, Champlain Towers South apartment building collapse

    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
  2. Wetlander

    Miami Pedestrian Bridge, Part XIV

    Of all the errors, and there seem to be many, the worst was probably the decision to keep the road open during the "repair" efforts.
  3. Wetlander

    Tesla Autopilot Update

    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
  4. Wetlander

    Miami Pedestrian Bridge, Part XIV

    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
  5. Wetlander

    Miami Pedestrian Bridge, Part XIV

    Review of FIGG calculations on another bridge, and the consultant has "identified an issue" with design of the pylon legs. Link
  6. Wetlander

    Boeing 737 Max8 Aircraft Crashes and Investigations [Part 5]

    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...
  7. Wetlander

    Miami Pedestrian Bridge, Part XII

    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...
  8. Wetlander

    Miami Pedestrian Bridge, Part XI

    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]
  9. Wetlander

    Miami Pedestrian Bridge, Part XI

    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...
  10. Wetlander

    Miami Pedestrian Bridge, Part XI

    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.
  11. Wetlander

    Miami Pedestrian Bridge, Part XI

    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...
  12. Wetlander

    Miami Pedestrian Bridge, Part X

    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...
  13. Wetlander

    Miami Pedestrian Bridge, Part IX

    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...
  14. Wetlander

    Miami Pedestrian Bridge, Part IX

    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...
  15. Wetlander

    Miami Pedestrian Bridge, Part IX

    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
  16. Wetlander

    Miami Pedestrian Bridge, Part IX

    Oh sorry, those were the April plans, not the December ones. Maybe they did show the shift?
  17. Wetlander

    Miami Pedestrian Bridge, Part IX

    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...

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