The 145,000-sf (13,470 m2) building, built in 1910, is a torsionally nonsymmetrical structure comprised of a six-story portion adjacent to a two-story portion. The building is located in Northern California. There was significant concern that the building will not be able to withstand the level of earthquake shaking expected at […]
Design of an Essential Facility with Steel Moment Frames and Viscous Dampers Using US NEHRP Procedure
This paper presents the nonlinear seismic analysis, development, and implementation of an innovative seismic retrofit strategy for a six-story nonductile reinforced concrete 145,000-sf (13,470 m2) historic building. Dynamic and nonlinear static analytical results verified that the building had a weak soft-story with inadequate post-yield capacity, and large torsional response. The […]
U.S. Design Of Structures With Damping Systems
Many applications of damper devices in both new and existing buildings in both United States and Japan have resulted from extensive damper device development efforts. The increased usage of this technology has created a demand for design guidance and building codes to specify their use in the United States. This […]
Design of an Essential Facility with Steel Moment Frames and Viscous Dampers Using 2000 NEHRP
This new 2-story, 40,000ft2 police headquarters becomes the first building in the United States to apply 2000 NEHRP procedure to design an essential facility with Fluid Viscous Dampers (FVDs). The structure is located in Vacaville, California, which is in a region of high seismic activity and classified as zone 4 […]
