All the existing skyscapers had full cores going down to bedrock. I had great faith for these in my speculated earthquake at 1 in 1-10000 per year. All the cheap condos are on soft storeys, and no good for earthquakes. This is somewhat in-between, and I have no idea. Makes me sad.
It's my belief that all structures should ride out 20-40 cm/s, in order to stop a major thingie. All the soft storeys will crack at 40 as shown in Chile. Sad.
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