Accelerated Arrogance: The FIU Pedestrian Bridge Collapse

I'm approximately a million hours away from being a structural engineer, but I think I could look at the cracks shown in the video at 6:49, 10:47, and 16:20 and say that maybe they shouldn't be going ahead with moving the bridge into place.

I never would have thought of the shifting forces during the movement of the bridge from its initial fabrication location, but the need to constantly restress the concrete with each move is fascinating. I would think that would require the concrete to be stressed and stressed and eventually over-stressed.

Fast-Tracked Failure: The Hyatt Regency Walkway Collapse

I've been watching videos from Brick Immortar of late and will have another one from the same channel next week, but I could pick probably any of these videos and post them here. They all seem to analyze famous engineering failures, quickly recap the incident, then summarize the causes of the failure.

This one is one I'd heard about and that I've seen discussed as a famous case of plans being adjusted without proper checking to see if that seemingly minor change would be problematic. This is, however, the first video on the incident that I've seen discuss that the original design would have been problematic over time as well.

What Actually Happened to the Concorde

This video didn't answer the question I was thinking it would. I was thinking it would go through the economics of why the Concorde no longer flies. Instead it went through the failure analysis following the only fatal Concorde crash, that of Air France 4590 on July 25, 2000. That does appear, however, to have been the nail in the coffin of the Concorde's commercial life.

The first five or so minutes of the video introduce the crash and the beginning analysis. At 5:00, then, the first clues emerge in the form of a sound recording of a burst tire and a remnant of irregularly-drilled metal strapping among the wreckage. At 10:00, the materials testing gets into fracture mechanics to determine how and when the fuel tank ruptured.

This might not be the best video to watch if you have a fear of flying, but it's fascinating to see how much can be discovered from how little was recovered.