Some of that footage is from [bleep].
Those cars rocking and rolling in a parking garage will get your attention
Yep
The Post Tension Cables in that structure did their jobs but probably amplified the shaking as they did it.
7.4 is no joke
I was around 3 miles from the epicenter of the Whittier Quake 30+ years ago if I remember right it was a 6.4.
I could be wrong on that.
When the Quake hit it sounded like a freight train heading into the steel shop I was working in and everyone stopped working and looked in the direction that it was coming.
When it got to us we had 3 waves role threw the shop. Steel was screeching and the building was waving back and forth about 3 ft from plumb each side.
The ground lifted us up like we were walking on a water bed about 8 or 9 inches with each wave.
And then Silence no sound at all.
We walked around for weeks wondering if the ground was gunna turn to jello again.
I feel for the Japanese they have more Earthquakes than Commyfornia and They work together with the Earthquake engineering of just about everything.