© SF YIMBY / New York YIMBY. “Former Union Bank Tower Sold for $61 Million, San Francisco”
Location San Francisco, CA
Size 286,332 sqft
Stories 22
Building Type Commercial
Number of Dampers 136
Structural Engineer Degenkolb
General Contractor Plant Construction
Owner Swig Company & SKS Partners
Retrofit
350 California is an existing 22-story bank building that was built in 1976. This Pre-Northridge Steel Moment Frame structure is located in the heart of a high seismic area in downtown San Francisco.
This voluntary upgrade used 136 dampers with integral extenders distributed across the lower 17 stories. Adding dampers reduced building drifts, limiting the number of Pre-Northridge connections that had to be strengthened.
