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Search Publications

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Displaying 676 - 700 of 3873

Robustness Assessment of RC Frame Buildings under Column Loss Scenarios

April 3, 2014
Author(s)
Yihai Bao, Joseph A. Main, Hai S. Lew, Fahim Sadek
A computational assessment of the robustness of reinforced concrete (RC) building structures under column loss scenarios is presented. A reduced-order modeling approach is presented for three-dimensional RC framing systems, including the floor slab, and

Final Report, National Institute of Standards and Technology (NIST) Technical Investigation of the May 22, 2011, Tornado in Joplin, Missouri

March 26, 2014
Author(s)
Erica D. Kuligowski, Franklin T. Lombardo, Long Phan, Marc L. Levitan, David P. Jorgensen
This is the final report of the National Institute of Standards and Technology (NIST) investigation of the May 22, 2011 tornado in Joplin, Missouri, conducted under the National Construction Safety Team Act. This report describes the wind field of the

Modeling of moment connections for structural fire analyses

March 25, 2014
Author(s)
Mina S. Seif, Therese P. McAllister, Joseph A. Main, William E. Luecke
Performance-based methodologies to evaluate the fire performance of structures are needed to move beyond the prescriptive procedures presently in use, which cannot be used to determine actual structural performance in fire. Analytical methods are needed

Guidance Document: Emergency Communication Strategies for Buildings

March 3, 2014
Author(s)
Erica D. Kuligowski
The purpose of this report is to provide guidance to system designers, building managers and/or building emergency personnel responsible for emergency communication on how to create and disseminate messages using basic communication modes (audible and/or

Stair Evacuation of People with Mobility Impairments

March 3, 2014
Author(s)
Erica D. Kuligowski, Richard Peacock, Bryan Hoskins, Emily Wiess
The time that it takes a population to reach safety when descending a stairwell during building evacuations is typically described by measureable engineering variables. These engineering variables include stairwell geometry, speed, density, and pre

Fire Characteristics of Steel Members Coated with Nano-Enhanced Polymers

March 1, 2014
Author(s)
Kathryn M. Butler, Alexander H. Cheng, Christopher Mullen, Ahmed Al-Ostaz
Applying a polymeric coating on steel members has been demonstrated to be an effective countermeasure for the threat of blast on building and other structures. The development of a blast-resistant coating for steel with good characteristics in a fire would

Power Supply Issues for Wireless Sensor Networks: A Review

March 1, 2014
Author(s)
Wenqi Guo, William M. Healy, Mengchu Zhou
Wireless sensor networks (WSNs) have enabled numerous embedded wireless applications in different areas such as military/battlefield, environmental monitoring, and intelligent building systems. They consist of a large number of nodes that need to operate

IAQ 2013 Tools Topic Overview

February 20, 2014
Author(s)
Steven J. Emmerich, Larry Schoen
The complex relationships between indoor and outdoor environmental conditions, coupled with the impacts of climate change, make it more important than ever before that buildings be comfortable and healthy for the occupants yet also energy efficient. This

Environmental Health in Low Energy Buildings Topic Overview

February 11, 2014
Author(s)
Steven J. Emmerich, Hal Levin
Besides providing thermal comfort and acceptable indoor environmental quality (IEQ), the designers of buildings and other enclosed spaces are increasingly challenged to provide a healthy environment in an energy efficient manner. Increasing pressure to

The IAQ and Energy Impacts of Reducing Formaldehyde Emissions in Commercial Building

February 11, 2014
Author(s)
Lisa C. Ng, Andrew K. Persily, Steven J. Emmerich, Kevin Y. Teichman
Heating, ventilating, and air conditioning (HVAC) systems in buildings are designed to provide thermally comfortable conditions and to maintain acceptable indoor air quality (IAQ). At the same time, the operating costs of HVAC systems are often a large

Thermodynamic Performance Limits of the Vapor Compression Cycle

January 19, 2014
Author(s)
Piotr A. Domanski, J S. Brown, Jae H. Heo, Mark O. McLinden
This presentation discusses the thermodynamic performance limits of the vapor compression cycle. We have applied evolutionary algorithms to explore the performance of hypothetical refrigerants defined by the thermodynamic parameters used by the extended
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