Has this been posted yet? An interesting PDF on the structural engineering of the structure--
http://global.ctbuh.org/resources/pr...ngineering.pdf
Also...maybe this was already discussed or confirmed in this thread somewhere...
But how are they gonna take that new tower crane down, the roof doesn't seem like it could accommodate a derrick crane...
By building the other one back up and then jump that one down and use a street crane to disassemble? The platform is only like 20 floors off the ground which doesn't seem impossible for a street crane. Unless that's what the platform next to it is for, a derrick...
...IDK seems kinda small and weak to me...
Helli-crane? Do they ever do that in NYC?