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Grade 60 reinforcement, with a nominal yield strength of 60 ksi (420 MPa), has been the primary type of reinforcement used in concrete construction in the US
While it is a key aspect of structural analyses that support current Performance-Based Seismic Engineering (PBSE), "structural collapse" is not clearly defined
NIST recently completed a multi-year study of three structural steel framing systems to evaluate the correlation between ASCE/SEI 7 (ASCE 2010) and ASCE/SEI 41
This project studies the collapse performance of concrete columns that do not meet the stringent reinforcement requirements for special columns defined by ACI
This project studies the collapse performance of concrete columns that do not meet the stringent reinforcement requirements for special columns defined by ACI
Community resilience has emerged as a way to reduce the direct and indirect costs due to natural, technological, and human-caused hazard events. There continues
Advancements in measurement science are needed to evaluate the benefits and costs of risk mitigation activities (retrofits) implemented to improve seismic
The Earthquake Risk Reduction in Buildings and Infrastructure Program conducts critical research to advance measurement science and enhance performance of the
The onset of structural collapse is used as the acceptance criterion in performance-based seismic engineering, but there is no consensus on how to define
The methodologies contained within ASCE/SEI 41 are currently the standard-of-practice for performance-based seismic design in the U.S. This project intends to
This is an annually renewed project that supports NIST's Lead Agency coordination of National Earthquake Hazards Reduction Program (NEHRP) research and
The goal of this project is to assess and recommend options for improving the built environment and critical infrastructure to reflect performance goals stated
Structural collapse demand and capacity are not clearly defined or directly simulated in current Performance-Based Seismic Engineering (PBSE) methodology
Performance-Based Earthquake Engineering (PBEE) has provided a probabilistic framework to predict the response of the structural systems by incorporating the
The resilience of infrastructure is often improved using fiber reinforced polymer (FRP) composites and fiber reinforced fabric cementitious matrices (FRCMs)
Steel moment frame design prior to the 1994 Northridge Earthquake (1985-1994 era) favored 1) panel zones that would yield before the adjacent beams and 2)
In certain regions of moderate seismicity, particularly in the central and eastern United States (CEUS), member sizes of the seismic force-resisting systems
This project includes two critical problem-focused tasks in Performance Based Seismic Engineering (PBSE): (1) the evaluation of reinforced concrete wall models
Structural engineers are increasingly using Performance-Based Seismic Engineering (PBSE), instead of building code-based prescriptive procedures, in the design