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Chiara F. Ferraris, Nicos Martys, William L. George
Rotational rheometers are routinely used for homogeneous materials, but their usage for characterization of a granular fluid like concrete is a relatively new phenomenon. As measurements with rheometers can involve flow in a complex geometry, it is
Enrico Ronchi, Erica D. Kuligowski, Richard D. Peacock, Paul A. Reneke
This paper presents an innovative method to study stair evacuation data based on a probabilistic analysis of occupant travel paths. This type of approach relies on a detailed video analysis of people movement and pattern reconstruction. Conditional
Anthony Hamins, Jason D. Averill, Nelson P. Bryner, David Butry, Richard Gann, Rick D. Davis, Daniel M. Madrzykowski, Alexander Maranghides, Jiann C. Yang, Matthew Bundy, Samuel Manzello, Jeffrey W. Gilman, Francine K. Amon, William E. Mell
Fire costs and losses are a significant life safety and economic burden on society comprising about two percent of the United States gross domestic product. This paper presents the results of a roadmap developed by the National Institute of Standards and
The sensitivity of composite floor system response at elevated temperatures to variations in structural features is examined. Four structural features were varied between two values or conditions, based on a recommendation from the NIST investigation of
This paper considers the alternative cooling technologies studied by Fisher et al. (1994) and assesses their current performance and market potential in reference to vapor compression technology. First, a taxonomy of cooling technologies based on the main
Sayaka S. Suzuki, Adam Brown, Samuel L. Manzello, Junichi Suzuki, Yoshihiko Hayashi
Firebrand production from a real-scale structure under well-controlled laboratory conditions was investigated. The structure was fabricated using wood studs and oriented strand board (OSB). A sofa was placed inside the structure and this sofa was ignited
Kuldeep Prasad(1), Brian Lamb(2), Maria Obiminda Cambaliza(3), Tegan Lavoie(3), Olivia E Salmon(3), Paul Shepson(3), Thomas Lauvaux(4), Ken Davis(4), and James R. Whetstone(1) (1) National Institute of Standards and Technology, Gaithersburg, MD. (2)
Wenhao Chen, Andrew K. Persily, Alfred T. Hodgson, Francis J. Offerman, Dustin Poppendieck, Kazukiyo Kumagai
Product loading ratio and area-specific airflow rate are among the key parameters required for indoor air quality (IAQ) modeling and exposure health assessment of building product emissions. This paper analyzes product loading ratio variations and
Mauro Zammarano, Szabolcs Matko, William M. Pitts, Douglas M. Fox, Rick D. Davis
Smoldering poses a severe fire hazard due to the potentially lethal amount of toxic carbon monoxide released, and the possibility to reach flashover (through transition from smoldering to flaming) with heat sources otherwise too weak to directly induce
Bulk oxide determinations from a pair of portland cements provides the basis for calculation precision and accuracy values for X-ray fluorescence (XRF) analysis for both the fused glass bead and the pressed powder sample preparation. Approximately 45
Erica D. Kuligowski, Long Phan, Marc L. Levitan, David P. Jorgensen
This is a report on the National Institute of Standards and Technology (NIST) reconnaissance to collect information on the performance of one critical facility and two educational facilities in the May 20, 2013, Newcastle-Moore tornado in Oklahoma. The
Steve M. Gwynne, Erica D. Kuligowski, Michael Spearpoint, Enrico Ronchi
The developers of egress models are in a difficult position. It is in their interest to develop models that are quick and easy to employ and at the same time to reduce accidental model misuse. While default values enables out-of-the-box use of models
This document provides specific detailed guidance and recommendations on the use of emergency stair travel devices, or stair descent devices, for evacuation of persons with mobility impairments during fire emergencies in buildings. The people who would
Enrico Ronchi, Erica D. Kuligowski, Paul A. Reneke, Richard Peacock, Daniel Nilsson
To date, there is no International standard on the methods and tests to assess the verification and validation (V&V) of building fire evacuation models, i.e., model testers adopt inconsistent procedures or tests designed for other model uses. For instance
Many aspects of indoor environmental quality (IEQ) and the technologies that control or otherwise affect it are interactive and often closely connected. This has important implications for the design and construction of buildings as well as for operation
Kevin B. McGrattan, Randall J. McDermott, Craig G. Weinschenk, Glenn P. Forney
This document provides the theoretical basis for the Fire Dynamics Simulator (FDS), following the general framework set forth in the Standard Guide for Evaluating the Predictive Capability of Deterministic Fire Models, ASTM E 1355. It is a four volume
Erica D. Kuligowski, Richard D. Peacock, Emily Wiess, Bryan Hoskins
Engineers analyze occupant movement data for the safety and protection of a population during emergency building evacuations. Quantifiable variables, such as: stairwell geometry, pre-evacuation delay, occupant speed, and population density form engineering
Fahim H. Sadek, Joseph Main, John L. Gross, Therese P. McAllister
This paper presents a brief overview of research at the National Institute of Standards and Technology (NIST) on disaster resilience of buildings, infrastructure, and communities, including component programs and projects. NIST's efforts aim at developing
Shonali Nazare, William M. Pitts, Shaun M. Flynn, John R. Shields, Rick D. Davis
The purpose of fire blocking barrier materials is to reduce the flammability of soft furnishings ( mattresses and upholstered furniture) by preventing or delaying direct flame impingement from open flames and/or heat transfer from smoldering ignition