Wow, the Scale!

I'm several hours into the model now and I'm shocked over and over at the pure scale of the building. I used the blueprint drawings for the major dimensions, but occasionally I have to eyeball a building element. Whenever I do so, I'll guess, say 3 feet, and then I measure it out in the model. It is never large enough. Something that would be 3 feet in the houses that I normally model would be right, but for a similarly proportioned item in Penn I have magnify by 3-4 orders of magnitude!

One saving grace of the design is the repetition and symmetry. I have lots of recursive and mirrored structures (groups and components), which keeps the model smaller and helps the model perform. Here is a screen shot so far: