I lived on the same amount of money in a ridiculously expensive housing market on the West Coast and I did not take out any additional loans during the school year. I did however, have a small additional grant over the summer, which is something you might want to ask about in your new department.
I think that the answer depends on your financial discipline and lifestyle. I cooked my own food, made my own coffee and tea, bought used books online, shopped the sale rack, and did not spend exuberant amounts of money on going out. I don't feel I lived particularly frugally (I mean I was not starving or anything), but I was always aware of what my limits were. And I could afford visiting my family and friends every once in a while.
Hope that helps