Historic Landmark Renovation
IMEG provided structural engineering services for the historic renovation of a San Francisco landmark adjacent to the cable car turnaround. The 85-year-old, eight-story, masonry building that houses the original branch of Bank of America was seismically retrofitted, expanded, and restored for mixed-use tenants including the bank, retail shops, and 44 high-end apartments.
The challenging seismic work required bracing of the three-story exterior columns and the ornate vaulted ceiling of the original rotunda. The mezzanine level was extended to create a second floor and to provide horizontal bracing for seismic stability. Also included in the mezzanine expansion were new escalators and stairs, and major modifications at the basement level.
This project was a recipient of the 2007 CELSOC Engineering Excellence Award of Merit and the 2006 SEAOC Excellence in Engineering Award for Best Use of Conventional Technologies in a Building Retrofit.