Structural engineering and design services were provided for this office to residential conversion that transformed an outdated 1974 office building into a 510,000-sf modern apartment building. The 29-story building includes 418 units with indoor and outdoor amenities including a dramatic roof deck providing residents with 360° views of the Bay Area, garden space, grass lawn, lounges, fire pit, and a grilling area.

A complete top-to-bottom renovation was completed as well as an occupancy change requiring the structure to be analyzed and proven to current building code. Our team utilized performance-based design to evaluate and analyze the existing structure. Working with the City and an independent third party peer reviewer, the following four-part system to evaluate the existing structure was developed:

• Static code level analysis
• Static service-level earthquake analysis
• Non-linear dynamic analysis
• Testing of existing moment frame weld quality

The precast concrete panel exterior was replaced with a modern glass façade, and the entire interior rebuilt with high-end finishes.

The building earned a GreenPoint certification due to its adaptive reuse of the existing structure and high-performance curtain wall, and also achieved LEED Silver certification.