Engineering Fails Thread

No.11933751 ViewReplyOriginalReport
I don't know if we've ever had these threads before but I feel we should take time to discuss some of the most historic (and horrific) engineering fuck-ups. Bonus points if the underlying failure cause was downright embarrassing.

>https://en.wikipedia.org/wiki/Hyatt_Regency_walkway_collapse

Pic & link related. Remains America's deadliest building collapse excluding the World Trade Center attacks.