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 […]
Design Of A New Steel Moment Frame Building Incorporating Viscous Dampers Following The Guidelines Of The 1999 SEAOC Blue Book
The project consists of a two-story 150,000 s.f. data storage facility located in Santa Clara, CA. The site for the project, which lies within a region of high seismicity, is located approximately 16 km from the San Andreas and Hayward faults. The building owner desires an enhanced performance state for […]
Performance of Structures with Dampers
The purpose of this paper is to evaluate the earthquake performance of structures with passive energy dissipators. This Paper addresses the following issues: 1) evaluation of seismic intensity levels at which frames incorporating the energy dissipating system (EDS) remain elastic; 2) performance evaluation of frames incorporating an EDS for high […]
Seismic Performance Improvement of A Torsional Irregular Concrete Shear Wall Building Using Toggle-Brace-Dampers
This paper describes a preliminary-assessment case study for seismic performance improvement of a stiffness and strength asymmetric concrete shear wall building using toggle-brace-dampers (TBD). The structure is a 16-story major regional phone switch building located in downtown Seattle. Its bottom 7-story including the basement was constructed in the mid 1950’s. […]
Retrofit Of A Metropolitan Mid-rise To Improve Torsional Response Using Nonlinear Fluid Viscous Dampers
In many metropolitan areas, midrise buildings are constructed adjacent to existing buildings, and incorporate concrete shear walls to act as a barrier between the two buildings. The orientation of these shear walls often causes severe torsional response within the building. The addition of a few well-placed nonlinear Fluid Viscous Dampers […]
Performance-Based Design of a Two-Story Addition to an Existing Nonductile Concrete Structure Enhanced with Passive Energy Dissipators
For full access to this technical paper click here and we will contact you shortly. This paper describes a case study of performance based seismic rehabilitation techniques used for a 1969 vintage concrete parking structure. A new 80,000ft2, two-story addition was planned for this existing 230,000ft2, six-story structure. The evaluation […]
Seismic Retrofit of a Landmark Structure Using a Mass Damper
The landmark Theme Building at the Los Angeles International Airport was evaluated for seismic loading. This structure is comprised of a reinforced concrete annular core and four steel arches placed at 90-degree orientations. Performance based engineering was used to assess the seismic performance of the concrete core. A detailed mathematical […]
Retrofit Strategies and Guidelines for Public Schools and Hospitals in Istanbul, Turkey
A task committee comprised of local structural engineers and earthquake engineering experts from abroad was formed to assess the seismic performance of public schools in under auspices of this group; a guideline has been developed better assess the existing conditions and develop retrofit options for school and hospital buildings in […]
Seismic Retrofit of Historic Iasi City Hall Building Using Seismic Protective Devices
Romania’s Iasi City Hall was originally constructed in the 1810’s in neo-classical Viennese style. It was modified in 1860’s and turned to the city hall in 1891. It is considered a cultural heritage building and was the Romanian Royal Family residence. The building framing is comprised of reinforced concrete floors, […]
Massive Damage Assessment Program and Repair and Reconstruction Strategy in the Aftermath of the 2010 Haiti Earthquake
The January 2010 Haiti earthquake resulted in over 230,000 deaths, affected 3 million people, and damaged or collapsed over 200,000 structures. An unprecedented earthquake damage assessment project by a joint operation of the Haitian Ministry of Public Works, the United Nations Office of Project Services, the Pan American Development Foundation, […]
