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A procedure is described for the design of rigid buildings for wind loading. The procedure, based on the database-assisted design (DAD) approach, uses measured pressure time series in conjunction with influence coefficients obtained by linear, static
A procedure is presented that makes use of measured pressures to predict peak static responses of low buildings, for cases in which no wind tunnel model is available with dimensions matching those of the structure of interest. The proposed approach
Cynthia H. Reed, Steven J. Nabinger, Steven Emmerich
As part of an ongoing effort to better understand the performance of indoor air cleaners in real buildings, the National Institute of Standards and Technology (NIST) has completed a series of air cleaner field tests and model simulations. This paper
D D. Evans, Erica D. Kuligowski, William S. Dols, William L. Grosshandler
The National Institute of Standards and Technology investigation of active fire protection systems in World Trade Center (WTC) 1, 2, and 7 included the design, installation, capabilities, and performance on September 11,2001, of the automatic fire
This report was prepared to support the analysis of building and fire codes and practices of the National Institute of Standards and Technology (NIST) World Trade Center (WTC) Investigation. This report suppons the objective of documenting the requirements
Steven W. Kirkpatrick, Robert T. Bocchieri, Fahim Sadek, R A. MacNeill, S Holmes, B D. Peterson, R W. Cilke, C Navarro
The objective of this report was to analyze the aircraft impacts into each of the World Trade Center (WTC) towers to provide the following: (1) estimates of probable damage to structural systems due to aircraft impact, including exterior walls, floor
Steven W. Kirkpatrick, Robert T. Bocchieri, Fahim Sadek, R A. MacNeill, S Holmes, B D. Peterson, R W. Cilke, C Navarro
The objective of this report was to analyze the aircraft impacts into each of the World Trade Center (WTC) towers to provide the following: (1) estimates of probable damage to structural systems due to aircraft impact, including exterior walls, floor
Steven W. Kirkpatrick, Robert T. Bocchieri, Fahim Sadek, R A. MacNeill, S Holmes, B D. Peterson, R W. Cilke, C Navarro
The objective of this report was to analyze the aircraft impacts into each of the World Trade Center (WTC) towers to provide the following: (1) estimates of probable damage to structural systems due to aircraft impact, including exterior walls, floor
Published stories of the survivor's of the World Trade Center (WTC) attacks were collected to document the event and as background material to guide the development of the National Institute of Standards and Technology (NIST) Investigation on occupant
Daniel M. Madrzykowski, Stephen Kerber, Nelson P. Bryner, William L. Grosshandler
Computer simulation has been demonstrated to be credible, when properly applied, as a tool to help fill in critical details of a fire incident and to demonstrate the value of alternative building designs and fire safety measures. This poster presents the
The baseline structural performance and aircraft impact damage analysis of the National Institute of Standards and Technology (NIST) Investigation of the World Trade Center (WTC) disaster had two primary tasks: (1) to develop reference structural models of
This report provides a comparison of the structural provisions of: (1) the New York City Building Code, 1968 edition, (2) the New York City Building Code, 2001 edition, (3) the New York State Building Construction Code, 1964 edition, (4) the Municipal Code
This report was prepared to support the goals and objectives of the analysis of building and tire codes and practices of the National Institute of Standards and Technology World Trade Center (WTC) Investigation. The report provides a comparison and summary
This report was prepared to support the analysis of building and fire codes and practices of the National Institute of Standards and Technology World Trade Center (WTC) Investigation. The report provides a comparison and summary of significant differences
Mehdi S. Zarghamee, S Bolourchi, D W. Eggers, Omer O. Erbay, F W. Kan, Yasuo Kitane, P R. Barrett, John L. Gross, Therese P. McAllister, A A. Liepins, M Mudlock, W I. Naguib, R P. Ojdrovic, Andrew T. Sarawit
Simpson Gumpertz & Heger, Inc. (SGH) developed finite element models of the components, connections and subsystems of the World Trade Center (WTC) towers to study their structural performance in the fire environment that followed the aircraft impact to the
Kevin B. McGrattan, Charles E. Bouldin, Glenn P. Forney
This report presents the results of numerical simulations of the fires in World Trade Center (WTC) 1 and WTC 2 on September 11, 2001. The calculations were performed with the National Institute of Standards and Technology (NIST) Fire Dynamics Simulator, a
William E. Luecke, Thomas A. Siewert, Frank W. Gayle
This report reviews the contemporaneous (1960s era) steel and welding standards used to construct the 110-story World Trade Center (WTC) towers. It describes the major structural elements in the towers and the many grades of steels relevant to the WTC
This report describes damage characteristics, failure modes, and fire-related degradation of the recovered structural components from the World Trade Center (WTC) 1 and WTC 2. Assessment of the structural components was divided into pre- and post-collapse
This report describes damage characteristics, failure modes, and fire-related degradation of the recovered structural components from the World Trade Center (WTC) 1 and WTC 2. Assessment of the structural components was divided into pre- and post-collapse
This report describes the provisions that were used to design and construct World Trade Center 1, 2, and 7. Included is a summary of the major provisions in the codes and standards together with the loads and load combinations that were used to design the
This report describes the provisions that were used to design and construct World Trade Center 1, 2, and 7. Included is a summary of the major provisions in the codes and standards together with the loads and load combinations that were used to design the
This report describes the provisions that were used to design and construct World Trade Center 1, 2, and 7. Included is a summary of the major provisions in the codes and standards together with the loads and load combinations that were used to design the
Hai S. Lew, Richard W. Bukowski, Nicholas J. Carino
The collapse of World Irade Center (WTC) 1, 2, and 7 resulted from structural damage from direct and indirect effects of aircraft impact and the ensuing fires. Thus, for collapse analyses of these buildings, knowledge of the physical state of the
This report was prepared to support the analysis of building and fire codes and standards of the National Institute of Standards and Technology World Trade Center (WTC) Investigation. As part of the investigation of WTC 7, the fuel oil distribution system
The September 11, 2001, attack on the World Trade Center (WTC) caused the deaths of 2,749 people. Included in the group were approximately 421 emergency responders from The Fire Department of the City of New York (FDNY), The New York City Police Department