Interior walls are wallboard over metal studs.
Ceiling tiles throughout the building are asbestos-free. The fourth floor east tower, and first floor and basement mechanical rooms were originally sprayed with asbestos decking insulation. Acoustical plaster exists in the first floor lobby and lecture halls. See also Lecture Hall Renovation Project . Although encapsulated with paint and non-friable, this material will become friable if disturbed by cutting, drilling, scrapping, etc.