[QUOTE=Zensteeldude;5107460]52 floors is half of 104 floors but it is no where near half of 1,368'. This Tower is not metric but I will be glad to convert for our friends who do not live in the US. (One of the only countries in the world who do not use the metric system.)
The 52nd floor is 641' 10" or 195 meters. (Current top of steel.)
The Tower will be 416.966 meters to the top of the parapet. The 104th floor is 1,313' 10" or 400.3 meters.
I have several programs with Imperial to metric converters but here is a link to a good one online. (It goes both ways, AC DC, lol.)
http://www.worldwidemetric.com/measurements.html
All of this is made more difficult by the PA system of elevation, I have to subtract 311' 2" from what ever is shown on the prints. (The elevation of the finished Lobby floor.)[/QUOTE
Is the 52nd floor 613' or 641' above the lobby. I thought floor 50 was 586'