As part of their new Chinatown Campus, City College of San Francisco retained ISI to investigate the existing Colombo Building for its structural properties. The extensive materials testing program was performed under close supervision by the Structural Engineer (Forell/Elsesser) as well as the Department of the State Architect (DSA). Work consisted of destructive and non-destructive testing to determine the structural properties and architectural detailing of the three-story 1916 building. All the work was performed while the parking garage in the basement, the retail spaces on the first floor and the second floor offices were in full operation. Some destructive testing required extensive shoring systems to support the building. ISI used subcontractors to assist with shoring engineering review, placing the shoring and creating containment for the exposure locations.
City College of San Francisco, Facilities Planning and Construction