Degenkolb performed seismic evaluations and designed the seismic retrofit for a historic banking hall building (400 California) and the adjacent 21-story tower (430 California) that was being repositioned for new tenants.
400 – 430 California Street Building, Seismic Retrofit – San Francisco, California
Degenkolb performed seismic evaluations and designed the seismic retrofit for a historic banking hall building (400 California) and the adjacent 21-story tower (430 California) that was being repositioned for new tenants. The banking hall–a San Francisco Designated Landmark–was originally constructed in 1908 and renovated in 1967 when the adjacent 430 California high-rise was constructed. Degenkolb performed seismic evaluations of both buildings and produced seismic strengthening schemes. Analysis indicated the tower had significant seismic capacity and would meet the desired performance objective, but that the historic banking hall would not. The innovative seismic retrofit tied the roof of the banking hall to the tower with strategically placed friction dampers while also strengthening the banking hall roof diaphragm and adding new shear walls, new concrete piers and bond beam, and new foundation elements. Degenkolb also provided construction engineering services directly to the general contractor, including engineering for path of travel, rigging for the steel erection at Level 3 of the tower, and equipment loading on the existing floor and roof slabs.
Project Stats
Client
Kennedy Wilson,
Takenaka Corporation (U.S.A),
Completion Date
2021
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Staff on the Project
Insung Kim
Director of Engineering Technology Principal
I was one of the documentary photographers recording the life of ...
Jim Malley
Senior Principal
I am a third-generation San Franciscan and have never lived more than ...
Kirk Johnston
Group Director Principal
A classic car and hotrod enthusiast, he enjoys spending time working ...
Insung Kim
Director of Engineering Technology, Principal
San Francisco
- (415) 354-6502
- ikim@degenkolb.com
Education
Ph.D., Civil Engineering, University of Texas at Austin, 2008
M.S., Civil Engineering, University of Texas at Austin, 2006
B.S., Civil Engineering, Yonsei University, Seoul, South Korea, 2001
Registration
CA, Civil Engineer, License No. 77087
CA, Structural Engineer, License No. 5892
TX, Civil Engineer, License No. 103609
Why did you go into structural engineering?
Great Hanshin Earthquake and Sampoong Department Store Collapse in 1995.
Concrete bridges designed by Robert Maillard.
Little Known Fact
I was one of the documentary photographers recording the life of migrant workers in South Korea and directed a photography exhibition on their life and culture.
Question of the Day
What’s your favorite band?
Radiohead.
Jim Malley
Senior Principal
San Francisco
- (415) 354-6419
- malley@degenkolb.com
Education
B.S., Civil Engineering University of California, Berkeley, 1980
M.Eng., Structural Engineering University of California, Berkeley, 1983
Registration
CA, Structural Engineer, License No. 3044
CA, Civil Engineer, License No. 38451
OR, Professional Engineer, Civil/Structural, License No. 64360
NV, Professional Engineer Civil/Structural, License No. 017640
WA, Professional Engineer, License No. 55143
Why did you go into structural engineering?
When I entered college, I originally was in the mechanical engineering department at Berkeley, interested in the sub-discipline of petroleum engineering (mostly because this was a few years after the energy crisis of the mid 1970’s). After learning more about what mechanical would entail, and realizing that this wasn’t going to be a good fit for my interests, I switched into Civil Engineering. Once I began taking classes in the various disciplines of Civil, I determined that structural would be the best for me, especially living in California with our exposure to earthquakes.
Little Known Fact
I am a 3rd generation San Franciscan and have never lived more than 20 miles from the City. I’ve also coached little league baseball for 30 years, which is finally coming to an end.
Question of the Day
What’s your favorite team?
SF Giants.
Kirk Johnston
Group Director, Principal
San Francisco
- (415) 354-6408
- kjohnston@degenkolb.com
Education
B.S., Architectural Engineering, California State Polytechnic University, San Luis Obispo, 1996
M.S., Structural Engineering, University of California, San Diego, 1999
Registration
CA, Structural Engineer, License No. 4705
California – Civil Engineer, License No. 59031
HI, Structural Engineer, PE-13675
NV, Structural Engineer, 024251
MA, Professional Civil Engineer, 47874-C
GA, Professional Engineer, PE035944
VA, Professional Engineer, 0402049039
NY, Professional Engineer, 089850 (Inactive)
NJ, Professional Engineer, 24GE04945600 (Inactive)
Why did you go into structural engineering?
I started out interested in architecture and began junior college with the plan to pursue an architecture degree. However, my first year at junior college I really enjoyed the physics courses and the higher-level mathematics. What tipped the scales for me was when I came across the architectural engineering degree at Cal Poly, SLO. The program was primarily structural engineering with architectural design thrown in. It combined aspects of both the things that interested and challenged me. The Cal Poly ARCE program then led me fully down the path to structural engineering.
Little Known Fact:
A classic car and hotrod enthusiast, he enjoys spending time working on his own classic ’56 Chevy he purchased his senior year of high school, and has been restoring ever since.
Question of the Day
What hobby would you go into if time and money weren’t an issue?
Custom car builder.
