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4/6/2016
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ACI 369R-11 Guide for Seismic Rehabilitation of Existing Concrete Frame Buildings and Commentary states that “Earthquake reconnaissance has clearly demonstrated that existing concrete frame buildings designed before the introduction of modern seismic codes are more vulnerable to severe damage or collapse when subjected to strong ground motion.” Expanding further on future earthquake risk the document continues, “Seismic rehabilitation of existing buildings where new components are added or existing components are modified or retrofitted with new materials, or both, can be used to mitigate the risk to damage in future earthquakes. Seismic rehabilitation is encouraged not only to reduce the risk of damage and injury in future earthquakes, but also to extend the life of existing buildings and reduce using new materials in the promotion of sustainability objectives.” According to the United States Geological Survey (USGS), several million earthquakes occur in the world each year. One of these was a 7.8 magnitude earthquake in Nepal in April 2015 which caused more than 8500 casualties and left over 22,000 people injured. Thousands of buildings were destroyed and many more became unsafe. Following the Nepal earthquake, engineers collected data to learn more about earthquake hazards in the region. Among the engineers were a team deployed by ACI Committee 133, Disaster Reconnaissance. The team’s mission was to investigate and publish a report for the Nepal government. Read more. JoAnn Browning, Technical Activities Committee contact to Committee 133, says that “Committee 133 provides a path for institutional members to aid reconnaissance efforts with their knowledge and skills after major disasters occur, and to carefully document and disseminate the results of these efforts. With this committee work, the Institute can now contribute to larger initiatives to reduce the hazards associated with major disasters through research, education, and practice. ACI established Committee 133 to gather information from major disasters and report on the effects on concrete construction around the world.” View ACI Seismic Resources The global nature of seismic research is evidenced in a recently published ACI Structural Journal paper, “Testing of Reinforced Concrete Frames Extracted from a Building Damaged during the Canterbury Earthquakes.” University of Auckland researchers test frame components from a 20-story building damaged during the 2010-2011 Canterbury, New Zealand earthquakes to help engineers improve earthquake design and assessment guidelines. Download “Testing of Reinforced Concrete Frames Extracted from a Building Damaged during the Canterbury Earthquakes." ACI Resources include Technical Documents, Online Learning, Videos, and hundreds of articles, papers, and journal articles from around the world available in the International Concrete Abstracts Portal as well as ACI’s Journals and Concrete International magazine. View seismic related technical documents based on committee: ACI Committee 374 - Performance-Based Seismic Design of Concrete Buildings ACI Committee 369 - Seismic Repair and Rehabilitation ACI Committee 341 - Earthquake-Resistant Concrete Bridges Most of ACI’s technical documents can be accessed through the Manual of Concrete Practice (MCP) Online which uses sophisticated search and retrieval software to instantly access the most comprehensive set of documents available on concrete technology. The documents are constantly being updated on the web site to provide the most current and frequently demanded information at the touch of a key. Download MCP 2016 Index. The Gold Line Bridge – Overcoming design, seismic, and safety challenges to build California’s newest landmark By investing in this research, ACI continues to proactively gather and share information on transformational ideas, practices, and techniques. This research adds to the sizeable amount of resources on the topic of seismic design, repair and rehabilitation available from ACI. Take advantage of all ACI’s resources for the concrete industry professional.
ACI 369R-11 Guide for Seismic Rehabilitation of Existing Concrete Frame Buildings and Commentary states that “Earthquake reconnaissance has clearly demonstrated that existing concrete frame buildings designed before the introduction of modern seismic codes are more vulnerable to severe damage or collapse when subjected to strong ground motion.”
Expanding further on future earthquake risk the document continues, “Seismic rehabilitation of existing buildings where new components are added or existing components are modified or retrofitted with new materials, or both, can be used to mitigate the risk to damage in future earthquakes. Seismic rehabilitation is encouraged not only to reduce the risk of damage and injury in future earthquakes, but also to extend the life of existing buildings and reduce using new materials in the promotion of sustainability objectives.”
According to the United States Geological Survey (USGS), several million earthquakes occur in the world each year. One of these was a 7.8 magnitude earthquake in Nepal in April 2015 which caused more than 8500 casualties and left over 22,000 people injured. Thousands of buildings were destroyed and many more became unsafe.
Following the Nepal earthquake, engineers collected data to learn more about earthquake hazards in the region. Among the engineers were a team deployed by ACI Committee 133, Disaster Reconnaissance. The team’s mission was to investigate and publish a report for the Nepal government. Read more.
JoAnn Browning, Technical Activities Committee contact to Committee 133, says that “Committee 133 provides a path for institutional members to aid reconnaissance efforts with their knowledge and skills after major disasters occur, and to carefully document and disseminate the results of these efforts. With this committee work, the Institute can now contribute to larger initiatives to reduce the hazards associated with major disasters through research, education, and practice. ACI established Committee 133 to gather information from major disasters and report on the effects on concrete construction around the world.”
The global nature of seismic research is evidenced in a recently published ACI Structural Journal paper, “Testing of Reinforced Concrete Frames Extracted from a Building Damaged during the Canterbury Earthquakes.” University of Auckland researchers test frame components from a 20-story building damaged during the 2010-2011 Canterbury, New Zealand earthquakes to help engineers improve earthquake design and assessment guidelines.
Download “Testing of Reinforced Concrete Frames Extracted from a Building Damaged during the Canterbury Earthquakes."
ACI Resources include Technical Documents, Online Learning, Videos, and hundreds of articles, papers, and journal articles from around the world available in the International Concrete Abstracts Portal as well as ACI’s Journals and Concrete International magazine.
View seismic related technical documents based on committee:
Most of ACI’s technical documents can be accessed through the Manual of Concrete Practice (MCP) Online which uses sophisticated search and retrieval software to instantly access the most comprehensive set of documents available on concrete technology. The documents are constantly being updated on the web site to provide the most current and frequently demanded information at the touch of a key. Download MCP 2016 Index.
The Gold Line Bridge – Overcoming design, seismic, and safety challenges to build California’s newest landmark
By investing in this research, ACI continues to proactively gather and share information on transformational ideas, practices, and techniques. This research adds to the sizeable amount of resources on the topic of seismic design, repair and rehabilitation available from ACI.
Take advantage of all ACI’s resources for the concrete industry professional.
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