Global Structural Analysis of the Response of World Trade Center Building 7 to Fires and Debris Impact Damage, Federal Building and Fire Safety Investigation of the World Trade Center Disaster (NIST NCSTAR 1-9A) PDF Download
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Author: nist
Publisher:
ISBN: 9781494743147
Category :
Languages : en
Pages : 178
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Book Description
This report analyzes the global response of WTC 7 to fireinduced structural failures and the resulting sequence of component and subsystem failures to determine the events that led to the global collapse of the building. The analysis involved a finite element model of the entire building, which was developed in LS-DYNA. Preliminary work involved twostory and 14 story subassemblies. The 47 story global model was based on the original structural drawings as well as construction fabrication shop drawings for connections. The model included the primary structural componentsthroughout the building, including exterior and core columns, floor framing beams and girders, floor slabs, column transfer truss structures, wind bracing truss members, and penthouse structures.
Author: nist
Publisher:
ISBN: 9781494743147
Category :
Languages : en
Pages : 178
Get Book Here
Book Description
This report analyzes the global response of WTC 7 to fireinduced structural failures and the resulting sequence of component and subsystem failures to determine the events that led to the global collapse of the building. The analysis involved a finite element model of the entire building, which was developed in LS-DYNA. Preliminary work involved twostory and 14 story subassemblies. The 47 story global model was based on the original structural drawings as well as construction fabrication shop drawings for connections. The model included the primary structural componentsthroughout the building, including exterior and core columns, floor framing beams and girders, floor slabs, column transfer truss structures, wind bracing truss members, and penthouse structures.
Author: Robert MacNeill
Publisher:
ISBN:
Category : Building failures
Languages : en
Pages : 173
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Book Description
This report analyzes the global response of WTC 7 to fire-induced structural failures and the resulting sequence of component and subsystem failures to determine the events that led to the global collapse of the building. The analysis involved a finite element model of the entire building, which was developed in LS-DYNA. Preliminary work involved two-story and 14 story subassemblies. The 47 story global model was based on the original structural drawings as well as construction fabrication shop drawings for connections. The model included the primary structural components throughout the building, including exterior and core columns, floor framing beams and girders, floor slabs, column transfer truss structures, wind bracing truss members, and penthouse structures.
Author:
Publisher:
ISBN:
Category : Building failures
Languages : en
Pages : 304
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Book Description
This is the final report of the National Institute of Standards and Technology (NIST) investigation of the collapse of the World Trade Center (WTC) towers, conducted under the National Construction Safety Team Act.
Author: U.s. Department of Commerce
Publisher: CreateSpace
ISBN: 9781495298752
Category : Technology & Engineering
Languages : en
Pages : 172
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Book Description
The objective of the work described in this report was to analyze the global response of WTC 7 to initial failure events due to fire and to analyze the resulting sequence of component and subsystem failures to determine the events that led to the global collapse.
Author: nist
Publisher: Createspace Independent Publishing Platform
ISBN: 9781494741877
Category : Architecture
Languages : en
Pages : 134
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Book Description
This report describes how the fires that followed the impact of debris from the collapse of WTC 1 (the north tower) led to the collapse of WTC 7; an evaluation of the building evacuation and emergency response procedures; what procedures and practices were used in the design, construction, operation, and maintenance of the building; and areas in current building and fire codes, standards, and practices that warrant revision. Also in this report is a summary of how NIST reached its conclusions. NIST complemented in-house expertise with private sector technical experts; accumulated copious documents, photographs, and videos of the disaster; conducted first-person interviews of building occupants and emergency responders; analyzed the evacuation and emergency response operations in and around WTC 7; performed computer simulations of the behavior of WTC 7 on September 11, 2001; and combined the knowledge gained into a probable collapse sequence. The report concludes with a list of 13 recommendations for action in the areas of increased structural integrity, enhanced fire endurance of structures, new methods for fire resistant design of structures, enhanced active fire protection, improved emergency response, improved procedures and practices, and education and training. One of these is new; the other 12 are reiterated from the investigation into the collapse of the towers. Each of the 13 is relevant to WTC 7.
Author: National Institute of Standards and Technology
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
This is the final report on the National Institute of Standards and Technology (NIST) investigation of the collapse of the World Trade Center (WTC) towers, conducted under the National Construction Safety Team Act. This report describes how the aircraft impacts and subsequent fires led to the collapse of the towers after terrorists flew jet fuel laden commercial airliners into the buildings; whether the fatalities were low or high, including an evaluation of the building evacuation and emergency response procedures; what procedures and practices were used in the design, construction, operation, and maintenance of the towers; and areas in current building and fire codes, standards, and practices that warrant revision. Extensive details are found in the 42 companion reports. (The final report on the collapse of WTC 7 will appear in a separate report.) Also in this report is a description of how NIST reached its conclusions. NIST complemented in-house expertise with private sector technical experts; accumulated copious documents, photographs, and videos of the disaster; established baseline performance of the WTC towers; performed computer simulations of the behavior of each tower on September 11, 2001; combined the knowledge gained into a probable collapse sequence for each tower; conducted nearly 1,200 first-person interviews of building occupants and emergency responders; and analyzed the evacuation and emergency response operations in the two high-rise buildings. The report concludes with a list of 30 recommendations for action in the areas of increased structural integrity, enhanced fire endurance of structures, new methods for fire resistant design of structures, enhanced active fire protection, improved building evacuation, improved emergency response, improved procedures and practices, and education and training. Includes: NIST NCSTAR 1: Federal Building and Fire Safety Investigation of the World Trade Center Disaster: Final Report of the National Construction Safety Team on the Collapses of the World Trade Center Tower NIST NCSTAR 1-1: Design, Construction, and Maintenance of Structural and Life Safety Systems NIST NCSTAR 1-2: Baseline Structural Performance and Aircraft Impact Damage Analysis of the World Trade Center Towers NIST NCSTAR 1-3: Mechanical and Metallurgical Analysis of Structural Steel NIST NCSTAR 1-4: Active Fire Protection Systems NIST NCSTAR 1-5: Reconstruction of the Fires in the World Trade Center Towers NIST NCSTAR 1-6: Structural Fire Response and Probable Collapse Sequence of the World Trade Center Towers NIST NCSTAR 1-7: Occupant Behavior, Egress, and Emergency Communications NIST NCSTAR 1-8: The Emergency Respose Operations.
Author: U.s. Department of Commerce
Publisher: CreateSpace
ISBN: 9781495294150
Category : Technology & Engineering
Languages : en
Pages : 478
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Book Description
In WTC 2, the aircraft impact caused damage to the south and north exterior walls, floors, and columns in the southeast corner of the core. The floor damage and the subsequent fires caused sagging of the floor and local floor/wall disconnections, and resulting in bowing and bucking of the east wall.
Author: Therese P. McAllister
Publisher:
ISBN:
Category : Building failures
Languages : en
Pages : 797
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Book Description
This report provides technical documentation of how NIST reconstructed the effects of the events on September 11, 2001 on WTC 7. This includes how the fires that followed the impact of debris from the collapse of WTC 1 (the north tower) led to the collapse of WTC 7; an evaluation of the building evacuation and emergency response procedures; what procedures and practices were used in the design, construction, operation, and maintenance of the building; and areas in current building and fire codes, standards, and practices that warrant revision. This report also describes how NIST reached its conclusions. NIST complemented in-house expertise with private sector technical experts; accumulated copious documents, photographs, and videos of the disaster; conducted first-person interviews of building occupants and emergency responders; analyzed the evacuation and emergency response operations in and around WTC 7; performed computer simulations of the behavior of WTC 7 on September 11, 2001; and combined the knowledge gained into a probable collapse sequence.
Author: United States. Congress. House. Committee on Rules
Publisher:
ISBN:
Category : Building failures
Languages : en
Pages : 28
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Book Description
Author: National Institute of Standards and Technology (U.S.)
Publisher:
ISBN:
Category : Aircraft accidents
Languages : en
Pages : 88
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Book Description
