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Displaying 1201 - 1225 of 3901

A Collection of Homes to Represent the U.S. Housing Stock

August 1, 2008
Author(s)
Andrew K. Persily, Amy Musser, Dennis D. Leber
In order to allow nationwide analysis of ventilation and indoor air quality issues in residential buildings, a set of homes has been defined to represent the housing stock of the United States. This collection of dwellings is based on two residential

Final Report on the Collapse of World Trade Center Building 7. Federal Building and Fire Safety Investigation of the World Trade Center Disaster (NIST NCSTAR 1A) ***DRAFT for Public Comments***

August 1, 2008
Author(s)
Sivaraj Shyam-Sunder, Richard G. Gann, William L. Grosshandler, Hai S. Lew, Richard W. Bukowski, Fahim Sadek, Frank W. Gayle, Jason D. Averill, James R. Lawson, Harold E. Nelson, Stephen A. Cauffman
This is the final report on the National Institute of Standards and Technology (NIST) investigation of the collapse of World Trade Center Building 7 (WTC 7), conducted under the National Construction Safety Team Act. This report describes how the fires

Flame Size, Heat Release, and Smoke Points in Materials Flammability

August 1, 2008
Author(s)
Gregory T. Linteris, I P. Rafferty
The concept of using the flame size as a surrogate for heat release rate has been explored. A technique for simultaneously obtaining the heat release rate, flame size (height and area), and the smoke point of the flame solely from visual images has been

Mean Recurrence Intervals of Failure Wind Loads

August 1, 2008
Author(s)
Dat Duthinh, Joseph A. Main, Amelia P. Wright, Emil Simiu
The Commentary to the ASCE Standard 7-05 states that the nominal mean recurrence interval (MRI) of the wind speed inducing the design strength is about 500 years if the specified load factor is 1.5, as in early versions of ASCE 7, and somewhat higher than

Residential Structure Separation Fire Experiments

August 1, 2008
Author(s)
Alexander Maranghides, Erik L. Johnsson
Building codes often allow structures with window openings and combustible exteriors to be built with as little as 1.8 m (6 ft) of separation between them. In a recent full-scale laboratory experiment at the National Institute of Standards and Technology

Structural Fire Response and Probable Collapse Sequence of World Trade Center Building 7 (Volume 1). Federal Building and Fire Safety Investigation of the World Trade Center Disaster (NIST NCSTAR 1-9) ***DRAFT for Public Comments***

August 1, 2008
Author(s)
Therese P. McAllister, Richard G. Gann, Jason D. Averill, John L. Gross, William L. Grosshandler, James R. Lawson, Kevin B. McGrattan, William M. Pitts, Kuldeep R. Prasad, Fahim Sadek, Harold E. Nelson
This is the primary technical report on the National Institute of Standards and Technology (NIST) investigation of the collapse of World Trade Center Building 7 (WTC 7), conducted under the National Construction Safety Team Act. The investigation

Structural Fire Response and Probable Collapse Sequence of World Trade Center Building 7 (Volume 2). Federal Building and Fire Safety Investigation of the World Trade Center Disaster (NIST NCSTAR 1-9) ***DRAFT for Public Comments***

August 1, 2008
Author(s)
Therese P. McAllister, Richard G. Gann, Jason D. Averill, John L. Gross, William L. Grosshandler, James R. Lawson, Kevin B. McGrattan, William M. Pitts, Kuldeep R. Prasad, Fahim Sadek, Harold E. Nelson
This is the primary technical report on the National Institute of Standards and Technology (NIST) investigation of the collapse of World Trade Center Building 7 (WTC 7), conducted under the National Construction Safety Team Act. The investigation

Chapter 2Combustion Products and Their Effects on Life Safety

June 30, 2008
Author(s)
Richard G. Gann, Nelson P. Bryner
All combustibles produce heat and smoke that, in sufficiently high concentration, may be hazardous to life safety. Incapacitation can result from exposure to the asphyxiant gases, irritant gases, and heat. Irritant gases and visible smoke can reduce a

Smoke Control and Occupant Evacuation at the World Trade Center

June 21, 2008
Author(s)
M J. Ferreira, S M. Strege, Richard Peacock, Jason D. Averill
This paper examines smoke control and occupant evacuation in WTC 1 and WTC 2 on September 11, 2001focusing on the impact region and above for each tower. Approximately 2,000 individuals were at or above the area of impact in WTC 1 and WTC 2 who did not

Catalytic Inhibition of Laminar Flames by Transition Metal Compounds

June 1, 2008
Author(s)
Gregory T. Linteris, M D. Rumminger, Valeri I. Babushok
Some of the most effective flame inhibitors ever found are metallic compounds. Their effectiveness, however, drops off rapidly with an increase of agent concentration, and varies widely with flame type. Iron pentacarbonyl, for example, can be up to two

A Line-Based Obstacle Avoidance Technique for Dexterous Manipulator Operations

May 19, 2008
Author(s)
Nicholas A. Scott, Craig R. Carignan
Cameras are often used for visual servoing or realtime mapping of the external environment in both autonomous and teleoperated tasks with a dexterous manipulator. Nominal operations will likely produce manipulator configurations that occlude the line-of
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