Directions within the David Rittenhouse Laboratory
From the main 33rd Street entrance, take the stairs straight ahead to the third floor. Turn left and go straight through the double-doors. Turn right, and the library is approximately halfway down the hall.
Weekdays
Access is unrestricted from 9am to 5pm.
Evenings
From 5pm to 10pm: Access is restricted to holders of PennCards, Drexel IDs, Library Courtesy Cards, and Penn alumni cards
After 10pm: Access is restricted to holders of PennCards.
Weekends
Access is restricted to holders of PennCards via swipecard access.
Undergraduate students and faculty automatically have access to DRL added to their PennCard.
Graduate students do not automatically have access. If you are a graduate student requiring library access on weekends please contact the building administrator, Jim Nixon at jnixon@sas.upenn.edu in advance. State that you want DRL access on weekends and give your PennCard number. Your card will then be validated for building access.