Agreeing with source-maps on this, the railing looks crap, disceptive at first but not very forgiving. You can easily model that in 5 minutes. Shift-click X100 and boom, God smiles upon you.
Popcorn I was going to try that building but when I started trying to do detailing on each floor it turned into an unimaginable mess. How are you adding architectural detail to a ramp?