On 1 August 2007 at 6:05 pm, during rush hour traffic, the I35-W Highway Bridge in Minneapolis, Minnesota collapsed into the Mississippi River.
We’ll look at how a bridge could suddenly collapse after 40 years of service. And we’ll ask was there an issue with design, or was there abnormal bridge loading at the time of the failure? Or was there both?
The next episode will be released on 6 June 2017.
The National Transportation Safety Board's report can be found at https://www.ntsb.gov/investigations/AccidentReports/Reports/HAR0803.pdf
A photograph of the loading on the bridge can be found in the NTSB failure report on page 26, see figure 16.
Did the Hanging Garden of Babylon actually exist or was it myth?
And why bother talking about it in this podcast?
Because apart from whether or not the Garden existed, or more importantly where it was located, the story of its history is fascinating.
But even more fascinating is the extraordinary engineering achievement that may have underpinned its very existence.
The next episode will be released on 2 May 2017.
A sketch of the Garden, as well as the bas relief depicting the garden at Ninevah, can be found here: http://www.archeolog-home.com/pages/content/ninive-iraq-the-hanging-gardens-of-babylon.html
A detailed account of the discovery of the ruins at Jerwan can be found here: https://oi.uchicago.edu/sites/oi.uchicago.edu/files/uploads/shared/docs/oip24.pdf
A link to Dr Dalley's book can be found here: https://www.amazon.com/Mystery-Hanging-Garden-Babylon-Elusive/dp/0198728840/ref=tmm_pap_swatch_0?_encoding=UTF8&qid=&sr=
Details of Jason Ur's work on declassified satellite imagery can be found here: http://scholar.harvard.edu/jasonur/pages/hollow-ways-0
My article on the subject can be found in The Structural Engineer magazine here: https://www.istructe.org/journal/volumes/volume-94-(2016)/issue-7/engineering-the-hanging-garden-of-babylon
With doctors saying her husband is dying, Emily Warren Roebling sets out on a path to see the great bridge through to completion.
Read more at http://www.bradyheywood.com.au/uploads/198.pdf
The next episode of the Brady Heywood Podcast will be released on 4 April 2017.
The greatest engineering challenge of the age. A male dominated profession. One woman.
Emily Warren Roebling.
Read more at http://www.bradyheywood.com.au/uploads/196.pdf.
The collapse of the Tacoma Narrows suspension bridge is one of the world's most recognised structural failures.
Were there any warnings from history that this failure could have occurred, and more importantly, if failures like this had ever happened at the past - why did we as a profession forget the lessons learned?
Footage of the bridge collapse can be viewed on YouTube https://youtu.be/j-zczJXSxnw
The tragic crash of the Virgin Galactic spacecraft carries lessons for all of us. Do failures happen because humans make mistakes? Or do they happen because we design systems that ultimately fail us as humans?
Detailed article on the disaster can be found at http://www.bradyheywood.com.au/uploads/224.pdf
The National Transportation Safety Board's report can be found at http://www.ntsb.gov/investigations/AccidentReports/Reports/AAR1502.pdf
The National Transportation Safety Board video of the seconds leading up to the disaster can be found at http://www.ntsb.gov/news/events/Pages/2015_spaceship2_BMG.aspx