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  1. Craig Neth

    Houston Ship Channel Bridge

    Well, yes, but it can be fairly difficult to 'yank the chip'. I've worked on cell phones where the processor and flash dies were stacked on top of each other in one package, these are BGA parts with many pins and an odd interface. Also, if the phone was turned on while wet it's possible there...
  2. Craig Neth

    Houston Ship Channel Bridge

    More likely, they are just really slow at updating their website or had to let go whomever was doing that for them. Can't imagine business is good for them right now... The last post on the 'News' page is from Summer 2020, all the copyrights say 2020, etc. Can someone knowledgable comment on...
  3. Craig Neth

    SF Tower settlement Part II

    I noticed that too, but I assume that Grady's illustration is simplified and not based on any drawings.
  4. Craig Neth

    SF Tower settlement Part II

    Grady Sullivan has done another one of his great summary videos on YouTube: What Really Happened at the Millennium Tower?
  5. Craig Neth

    Hernando de Soto Bridge (I-40 Mephis)

    Today's update: Link The posted a video on twitter of a truck driving across, apparently they are doing some load testing using the existing sensor network.
  6. Craig Neth

    Hernando de Soto Bridge (I-40 Mephis)

    Now up to 17 additional repairs, from today's press release. These 'secondary' mending plates appear to be much smaller than the 'major' repair: Source
  7. Craig Neth

    Hernando de Soto Bridge (I-40 Mephis)

    It definitely seems like there were more systematic failures here. One person should not be able to consistently screw up a process this important.
  8. Craig Neth

    Hernando de Soto Bridge (I-40 Mephis)

    According to the article, it is/was an Aspen-A75. Here's a bit of an excerpt from the article: Also, this: Since it sounds like the procedure always had the same start points and number of stops, it seems like you could potentially end up with consistent 'blind spots'.
  9. Craig Neth

    Hernando de Soto Bridge (I-40 Mephis)

    Interesting article about the fired bridge inspector: "Plenty of blame to go around following Mississippi River Bridge closure". Link According to him, the fault was not visible from the angle of the snooper truck because it could not go far enough outboard... Definitely feels like a...
  10. Craig Neth

    Hernando de Soto Bridge (I-40 Mephis)

    Latest update: Seems like the ND testing found quite a few failed welds that needed repairs. TDOT also published a picture of the 'phase 2' repairs with a fresh coat of paint: Source
  11. Craig Neth

    Hernando de Soto Bridge (I-40 Mephis)

    Update: The repairs to the fault are complete, but the ND testing identified 9 other areas that need plating: Source
  12. Craig Neth

    Hernando de Soto Bridge (I-40 Mephis)

    I think the answer is 'they don't know yet'. They only just removed the fractured piece on Friday, presumably it's gone back to a lab or testing facility for analysis and testing.
  13. Craig Neth

    Hernando de Soto Bridge (I-40 Mephis)

    Today's update from TDOT: Bigger picture of some of the interior 'mending plates': Link
  14. Craig Neth

    Hernando de Soto Bridge (I-40 Mephis)

    From their FB page, this image of the fractured piece:
  15. Craig Neth

    Hernando de Soto Bridge (I-40 Mephis)

    Latest update: And some images: Source
  16. Craig Neth

    Hernando de Soto Bridge (I-40 Mephis)

    TDOT just tweeted this:
  17. Craig Neth

    Hernando de Soto Bridge (I-40 Mephis)

    Update today, and a picture of the failure area: Here's a slightly bigger view of the fracture area picture, scraped from the Word doc. Does the fellow inside have to run the plasma cutter??? Link
  18. Craig Neth

    Hernando de Soto Bridge (I-40 Mephis)

    TDOT posted some pictures of the hydraulic jacks this morning on Twitter: Link
  19. Craig Neth

    Hernando de Soto Bridge (I-40 Mephis)

    Tdot posted a picture on twitter today that shows the PT bars being installed, you can now see how they are transferring the load to the previously installed weldments.
  20. Craig Neth

    Hernando de Soto Bridge (I-40 Mephis)

    Grady Hillhouse did a nice summary of the bridge today on his Practical Engineering YouTube Channel: https://www.youtube.com/watch?v=e8PodEM4Y8g

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