List of Contributions

In looking at the NTSB final report, I'm surprised that the report doesn't comment on, or even reference, the submissions made by the other parties to the investigation. Those party submissions can be found in the public docket. I especially recommend reading the party submissions by the designer and ...

Andres, Thanks for sharing your perspective. From my vantage point in the US, I've never assumed that structural failure rates will be substantially lower in the US than the average for the rest of the world.​ There may be a degree of 'risk compensation' involved, where greater resources and experience ...

​The NTSB has completed its investigation of the failure of the FIU pedestrian bridge in Florida. The final report will be released in the next few weeks, and meanwhile an abundance of information can be found at these links: Accident ID HWY18MH009 Mode Highway occurred on March 15, 2018 in Miami, ...

Chad, Thanks for your response as well. In my office, we generally don't release preliminary or unchecked calculations to clients, we only release final and checked calculations when asked to do so.​ For concept study and preliminary design submissions, we usually provide reports, drawings, ...

I think that certifications to establish a minimum level of specialized expertise are a necessity for public safety, since they help prevent practitioners from practicing outside their areas of expertise. I was a member of the forensic team which investigated the 2017 Oroville Dam spillway incident in ...