Awesome. Outside of a few strange political situations like HK/Singapore we probably don't actually need to build structures higher than 12-18 stories as well -

Awesome. Outside of a few strange political situations like HK/Singapore we probably don't actually need to build structures higher than 12-18 stories as well - most examples I can think of are vanity projects. It strikes me that there might not be a replacement for concrete in other forms of building though - what about dams, bridges, etc?