nakatago wrote:sundaymorningstaple wrote:They must remember that SF is built on shaky ground.....

So is Tokyo.
And Taipei. Not only is it shaky, but they have also have catagory 5 typhoons. So they need to build something that won't shake, but will sway. And it's very possible:
Modern mid- and high-rises built to normal code in most places will be more stable than 90% of the residential buildings in San Francisco currently occupied. They all have "soft stories" which are prone to collapse in even minor to moderate shaking if its in the right place.
So the best thing they could do is tear down half the city and rebuild it taller and denser. The real reason is older
property owners (longer term) have fought taller buildings on grounds they will ruin their views.
And Nack's BI link is spot on too. That's the other one I was trying to find to paste in.