The 90,000 sf library addition, designed by Robert A.M. Stern Architects, is situated on a very compact urban site. To meet the Law School’s aggressive space requirements, floor-to-floor heights were minimized, enabling a total of 13 floors to be constructed on the code-restricted site. The reinforced concrete structure sits between two existing buildings. Using beams only at perimeter and a structural slab system with a minimal depth, DeSimone was able to meet the client’s programmatic needs.