DrZoidberg
Contributor
Until they get a bit one, and the it Isn't. There's great variance of where its the worst because of the geography. Every 10 years they're more violent, and then every 40-50 years there's a "super typhoon" that destroys everything in a limited area.
There's a lot of similarities with New Orleans. Same same
I would expect most of the structures in Shanghai to shrug off even a force 5 with little damage other than perhaps glass breakage (and consequent water damage) due to overpressure. The structures themselves are almost all basically big concrete boxes, the wind isn't going to harm them.
The problem isn't wind and rain on land. The problem is the typhoon raising the level of the sea so it washes over the city. No concrete building will stand if you pound it with trees and cars being repeatedly lifted and flung at it.
Taipei has solved this by building a protective dyke along the coast. Each typhoon the edge of it (under the water towards the sea) gets repaired, because it gets pounded so hard. I don't know how Shanghai does it, but I imagine that they do something similar considering the city has been there for over a thousand years. A quick googling showed that Shanghai is still evacuated now and again when it gets particularly bad. Holland has the world's most advanced protective dykes because if they didn't, they'd get wiped out in no time, by even the tiniest storm. It's not like we don't know how to do it.
New Orleans didn't build a protective dyke because... ? It's just a bit mystery. When New Orleans was first founded they built protective dykes. Because they realised a potential problem immediately. But coasts and waters shift over time, and they just haven't kept it up. Didn't New Orleans have a flooding disaster in the 1960'ies? It's not like this came from nowhere. Not investing in this is like building a nuclear power plant without safety systems because then we'll only get a disaster once every 50 years. And save some money in the short term. The logic is broken.