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On February 2, 2016, President Obama signed Executive Order (EO) 13717: Establishing a Federal Earthquake Risk Management Standard. The EO establishes a minimum level of seismic safety compliance for new and existing buildings that will be constructed
This article discusses the background and motivation of work conducted at NIST to advance first-generation performance-based design procedures in ASCE 41.
Katherine Johnson, Siamak Sattar, Christopher Segura, Steven McCabe
The magnitude 7.1 Cook Inlet Earthquake of November 2018 greatly affected Anchorage, AK area residents. Although shaking likely did not exceed the hazard level for which most newer buildings are designed, disruption to normal operations was significant due
ASCE 41 is a standard that contains performance-based engineering procedures sometimes used to assess and retrofit existing structures. In 2015, the U.S. National Institute of Standards and Technology completed a study investigating the relationship
Siamak Sattar, David Goodwin, Sandra Milev, Jazalyn Dukes, Christopher Segura
As part of the effort to improve the seismic performance of buildings in Alaska (AK), many of the deficient structures in Anchorage, AK were retrofitted—some with externally bonded fiber-reinforced polymer (EBFRP) composite systems. The 2018 magnitude 7.1
Piyachai Chansuk, Gulen Ozkula, Chia-Ming Uang, John Harris
Twenty-one W24 hot-rolled columns of ASTM A992 steel with five different sections were tested in Phase 1 of this research program to investigate the effects of slenderness parameters, constant axial load levels, lateral drift loading sequences, and weak
Juan Fung, David Butry, Siamak Sattar, Steven McCabe
This article presents the current state-of-practice with respect to quantifying the total cost to retrofit an existing building. In particular, we combine quantitative, qualitative, and heuristic data to provide a taxonomy for understanding the direct and
Yating Zhang, Juan Fung, Katherine Johnson, Siamak Sattar
This article reviews the current state of practice in seismic risk mitigation, focusing on policies in ten of the most earthquake-prone countries around the world. In particular, the review compares policies to retrofit existing buildings and mechanisms
Matthew Speicher, Zhidong Zhang, Benjamin W. Schafer
The objective of this paper is to summarize the evaluation results from applying the updated performance-based seismic design provisions: ASCE 41-17, on a cold-formed steel framed building sited in a location with high seismic demands. The assessment
Matthew S. Speicher, Ivana Olivares, Benjamin W. Schafer
The objective of this report is to assess the adequacy of new provisions in ASCE 41 for seismic assessment of cold-formed steel framed buildings. A two-story cold-formed steel (CFS) framed building that has been designed to contemporary seismic standards
Juan F. Fung, Siamak Sattar, David Butry, Steven L. McCabe
Aging building clusters all around the world, especially in high seismic regions, will require a retrofit approach to improve the resilience of the built environment. One of the main challenges of retrofitting existing buildings is the associated cost
Juan Fung, Dustin Cook, Yating Zhang, Katherine Johnson, Siamak Sattar
Current building design practice targets life safety performance for the design-level earthquake. While some buildings (e.g., schools, hospitals) may be designed for higher performance, the actual performance of most residential and commercial buildings
Both ASCE/SEI 7-16 and ASCE/SEI 41-17 design standards require that P-D effects be included in the nonlinear dynamic analysis procedure for designing new and existing structures. However, software packages that perform nonlinear dynamic analysis typically
During a strong earthquake, commercial and residential buildings designed to meet current building codes and standards may sustain damage that significantly hinders the restoration of building functionality. The impacted buildings, and consequences such as
With the gaining popularity of performance-based engineering, it is essential to have reliable estimates of component (e.g., steel beam or column) performance under actual earthquake loading demands. In the United States, a component backbone curve
Although it is clear that a building must be capable of carrying gravity loads while developing large inelastic deformations and associated lateral displacements during a large earthquake, achieving this performance objective in day-to-day practice still
Luis Ceferino, Judith Mitrani-Reiser, Anne Kiremidjian, Gregory Deierlein, Celso Bambaren
Hospital systems play a critical role in treating injuries and preventing additional deaths during disaster emergency response. Natural disasters hinder the ability of hospital systems to operate at full capacity. Therefore, it is important for cities to