Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations MintJulep on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. ImminentCollapse

    An unusual feature (to me) on a steel truss bridge

    It looks like the laterals are along the skew, it may be something as simple as they needed a top node there for the top lateral to frame into. IC
  2. ImminentCollapse

    Mexico City subway overpass collapses, killing at least 23 and injuring dozens

    LittleInch, The truss you refer to is called a cross-fame, used for lateral stability during construction and to account for lateral load transfer such as wind between the girders. Also, if the top flange was unbraced (non-composite), it would provide top flange bracing in the final condition...
  3. ImminentCollapse

    Bonner Bridge (Outer Banks NC) Collapse During Demo

    https://www.obxtoday.com/federal-investigation-of-deadly-bonner-collapse-likely-to-take-months/?__cf_chl_jschl_tk__=a0078cd0dcbe08ff19774ee697cd75ae13d0157e-1618853477-0-AfFBOR948QVYuDrUQDCOYCNW-rdAz6XguYnStYlQytcEKK9tm5s8qdVbpP5Kfwa8MkxwSl1AV00BAQCQmS6i1o41inlkhigDlelcJfR7QT5aLa2uJEVq5m52GIBUGfQ...
  4. ImminentCollapse

    2 dead in Tesla accident "Noone wasdrivingthe car"

    Sounds like we'll need to bring the liquidators out of retirement to fight these fires, if there are any left. Have the helicopters with hoppers of boron and concrete at the ready. IC
  5. ImminentCollapse

    Other People's Business

    How did you get their calc. package? Is it available publicly or was it provided for formal review? Or behind the scenes from the contractor your boss knows? At an absolute bare minimum, and I'm not sure you should even be involved, if you choose to take action a first step would be to...
  6. ImminentCollapse

    Miami Pedestrian Bridge, Part XIV

    From Figg's party submission to the NTSB relating the events on the morning of the collapse, their own words: "Figg left the site to return to Tallahassee to develop a way to enhance the north end truss member connection at this stage of construction." Why? If all was well and good and no one...
  7. ImminentCollapse

    Miami Pedestrian Bridge, Part XIV

    For the curious or skeptical, WJE webinar tomorrow...
  8. ImminentCollapse

    Miami Pedestrian Bridge, Part XIV

    Those cracks were so bad that NDT, advanced or basic, was unnecessary. IC
  9. ImminentCollapse

    Self Driving Uber Fatality - Thread IV

    "it was being MISUSED; the driver is either inattentive a little, or enough to not even be looking at anything car-related. " That brings us full-circle. In the 6000+ ped deaths cited above, exactly zero would have occurred if one or both parties were just carefully paying attention in the...
  10. ImminentCollapse

    Miami Pedestrian Bridge, Part XI

    Concur with saikee119... The bridge was screaming for help and to some extent the presentation acknowledges that. In an instance like this with large and growing cracks at a critical location that you can not replicate with analysis, as the EOR, you have to convince yourself it is not OK until...
  11. ImminentCollapse

    Miami Pedestrian Bridge, Part IX

    https://www.miamiherald.com/news/local/community/miami-dade/article230079344.html More news, looking now for the 44 page document referenced in the article. IC
  12. ImminentCollapse

    Another cable-stayed Bridge in Colombia.

    I can't imagine it is intentional. There is tremendous axial force in the deck/superstructure from the horizontal component of the stay forces. Not having that force in a linear plane would cause immense localized stress at each lower anchorage that was vertically offset from a subsequent one...
  13. ImminentCollapse

    Salesforce Transit Center closes due to cracked support beam

    epoxybot, Are you the mayor, chief engineer, attorney general, chief of police and head librarian for San Francisco by chance? Star for you again. Concerning crack for certain, looks like stiffener/web/flange interface origination as HotRod10 speculated. IC
  14. ImminentCollapse

    Miami Pedestrian Bridge, Part VIII

    .....and why didn't the flight engineer on KLM 4805 speak up? why were they running a low-power non-standard test on unit 4? how did water get into a methyl isocyanate tank? clearly the o-ring was bad, Eastern Flight 401................. History is littered with the victims of tragedies due to...
  15. ImminentCollapse

    Bridge Collapse in Genoa, Italy

    My text got cut off. Article on a study to look at the stays. So, they had already retrofitted the east span stays, had a report stating there was an "anomaly" in the subject span, and were working on a fix of some sort apparently. This is looking FIUish to some extent. IC
  16. ImminentCollapse

    Bridge Collapse in Genoa, Italy

    https://www.reuters.com/article/us-italy-motorway-collapse-report/engineering-study-in-2017-warned-about-italy-bridge-stability-reports-idUSKBN1L210A IC
  17. ImminentCollapse

    Bridge Collapse in Genoa, Italy

    Interestingly, if you go to Google street view and ride across the bridge, the S/E span has external P/T strengthening up the length of all four concrete stays. The other main spans do not including the one that collapsed. There was work going on the north side at the deck level, but it looks...
  18. ImminentCollapse

    Surety Trying to Extricate Themselves from Figg

    I put this here rather than the collapse thread. Beware of your D/B contract language, arrangements and disclosures I guess. Or, just try to avoid catastrophes. https://insuranceinsider.com/articles/120316/travelers-and-phoenix-sue-to-avoid-payout-in-florida-bridge-collapse IC
  19. ImminentCollapse

    Girls in STEM is failing both girls and STEM?

    The organizations I mentioned actually exist. There is not talk of Girls Scouts in the US, it exists. Merkel, Thatcher, Clinton, Pelosi, Palin, Rice, Rometty, Winfrey, Maddow, Coulter etc. all exist. They have overcome, accomplished, achieved. That’s not talking about the problem, those are...
  20. ImminentCollapse

    Girls in STEM is failing both girls and STEM?

    IRStuff/John Baker I imagine your neighborhood block party photos may be of a similar homogenous makeup, regardless of the ethnicity. As is the cast for most folks I do concede. Regarding girls access to opportunities in STEM or life in general, I suggest white-male-Christianity deserves some...

Part and Inventory Search

Back
Top