Thanks Conundrum, I looked everywhere...

I had a feeling it wasn't a routine problem to solve. I read an article once in architectural digest about the big problems of skyscrapers and their solutions, like they "swaying in the wind" problem, or the smokestack effect that elevator shafts cause when they provide a free "channel" for air to move through when it tries to equalize pressure or temperature.

It said that without revolving doors, you would have to walk through a hurricane force wall of wind when you exited an elevator on the 100th floor! not good if you're wearing a kilt...