Located partially underground, two lecture halls form a base for a pair of "objects:" a cast stone element consisting of five classrooms and service areas facing the plaza; a zinc-clad element (rotated to resolve the varying geometries of adjoining buildings) contains five labs and a lab prep room and provides frontal orientation toward the main circulation path. The public circulation path acts as a wrapper unifying the three "objects."
A canopy marks the entrance to a double-height atrium, which connects the new building to Jadwin Hall and provides access to five classrooms, two labs and a prep room. The barrel-vaulted ceilings of three additional labs allow tall experimental set-ups involving gravity and motion studies. An exterior stair leads down to a second entrance, where the original gallery was refurbished to create lobby space for two new lecture halls. The halls are steeply raked and provided with rear projection facilities, catwalks, and turntable stages, which allow large-scale experiments to be set up in the prep room behind the stage and then rotated into the lecture halls. All three buildings are linked, allowing multiple accesses to the lecture halls.
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“McDonnell Hall, with its refreshing palette of materials, encloses the plaza and provides a physical link between Jadwin and Fine Halls. It solves problems of scale, linkage and circulation on a difficult site in the university’s science complex.”
Architectural Record, October 1998