Portfolio
U.S. GSA James R. Browning Courthouse Seismic Evaluation
Slate performed geotechnical/geohazards evaluations and provided recommendations for the seismic retrofit of the James R. Browning U.S. Courthouse in San Francisco, headquarters for the U.S. Court of Appeals for the Ninth Circuit. The building, which opened in 1905, survived the 1906 San Francisco Earthquake, but was damaged during the 1989 Loma Prieta earthquake and subsequently retrofitted with a friction pendulum base isolation system. The building is listed on the National Register of Historic Places.
Slate services:
- Code-based and site-specific horizontal and vertical response spectra
- Probabilistic response spectra
- Two suites of 11 sets of scaled acceleration time histories
- Geohazards assessment
- Recommendations for mitigation measures and ultimate values for soil bearing, coefficient of friction, subgrade modulus, and passive pressure for spread footings, as well as pile capacity estimates and retaining wall design pressures
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