[PAR35]

Challenger - the white male engineers warned them not to launch. It was the hacks at NASA that caused that one. (Or, if you want to trace it back, it was the persecution of the Nazis that built NASA that ultimately led to the disaster.)

The Minnesota bridge wasn’t an engineering failure, it was a combination of anti- icing solution over a period of time, poor maintenance, and parking over a half million tons of equipment on the bridge in addition to the normal traffic weight.

You’ll need to identify which Washington bridge collapse you are discussing (Tacoma Narrows, or Lake Washington, or something else), and identify the engineers on the Hyatt collapse by name so they can be researched.

[Right Wing Assault]

I thought the Hyatt walkways had a sufficient design, but it was difficult to run the nuts up the threaded rod, so the construction people cut the rods at each floor. Therefore, two rods and next to each other, one not on the top of the concrete, the other nut below. This put a bending load on the concrete. When the people started dancing, the concrete cracked and that was the beginning of the end. People heard the cracking before it went down.

Yes, corrosion led to the Minnesota failure, but a lot of corroded bridges don't fail. There was component that was crucial. No redundancy. If it any of those failed, the bridge fell. Bad design.

[Moonman62]

All three human tragedies at NASA were the result of management failures.

Apollo 1
Challenger
Columbia