They're anti-terror ramps!
I never really understood Lerner Hall (I think Shawn Choy created that captioned image originally, no?) until this night's Stella, when I realized that it makes a decent airport. (They shot an airport scene on the top floor.) It was as if Bernard Tschumi was trying to design an airport, missed, and decided to call it a student center. Putting STA Travel in the basement for a couple of years should have been a giveaway.