Seismic retrofit and historic renovation of the main fire station originally constructed in 1939. This project involved a substantial seismic retrofit to comply with Performance-Based Engineering Criteria for continued operation following a moderate to severe earthquake. Strengthening required total reconstruction of the second level, replacement of the roof deck, application of shotcrete to existing walls, and the installation of strategically located braced steel frames. The Structural Engineers Association of California awarded this project "Best Historic Preservation" in 2003.
$4M construction cost

Seismic retrofit and renovation to convert a single story, 50,000 gsf concrete tilt-up warehouse into a training facility. Functions include office space, conference rooms, classrooms, welding room and open shop space. The seismic strengthening work improved the roof diaphragm system in conformance with IBC’s “Guidelines for Seismic Retrofit of Existing Buildings.” The renovation includes creation of a dramatic steel and glass entry structure and the removal of several concrete wall panels.
$3M construction cost

Evaluation and seismic upgrade of two historic unreinforced masonry buildings totaling approximately 20,000 gsf in the Main Quadrangle. These historic structures were among the first buildings constructed on the Main Quadrangle and were upgraded for conformance to both Stanford and County of Santa Clara criteria. Project included extensive post elastic analysis, material testing and minimal historic intervention in the retrofit scheme.
$1.3M construction cost

Seismic upgrade and renovation of the historic city hall originally constructed in 1890 of unreinforced brick and heavy timbers. Methodology for seismic hazard mitigation in this unreinforced masonry building maximized preservation of existing construction and finishes.
$4.5M construction cost

Seismic strengthening, functional remodeling and expansion to the City of Berkeley's seven fire stations. DASSE served as Prime Consultant to the city coordinating architectural, mechanical, and electrical upgrades for ADA, segregated restrooms and development of emergency power systems as well as producing construction documents for the seismic strengthening program.
$5M construction cost

DASSE performed a detailed seismic evaluation of a 140,000 sf, 9-story reinforced concrete frame building relative to seismic performance criteria established by the California Division of the State Architect (DSA). Five different retrofit schemes and associated construction costs were developed; a concrete shear wall scheme which satisfied both DSA seismic performance goals and functional requirements was implemented.
$6.9M construction cost

Seismic strengthening of a two-story reinforced concrete structure. The 6500 gsf building is a registered historical landmark. Strengthening work is phased to fit a limited budget and maintain the 1918 building's historic architectural features.
$1.2M construction cost

Seismic retrofit of the historic 9,100 gsf two-story adobe building originally constructed in the 1840's by General Vallejo. Retrofit scheme consists of strengthening and interior steel moment frames. Full-scale lateral testing of the wood floor diaphragm was performed to determine appropriate lateral stiffness to design the moment frames.
$1M construction cost