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Sayaka S. Suzuki, Samuel Manzello, Matthew Lage, George Laing
A full scale, proof-of-concept experiment was conducted to investigate firebrand production from a burning structure. In this experiment, NIST researchers were invited to set up instrumentation during a structure burn down. As the structure burned
Samuel L. Manzello, Sayaka S. Suzuki, Yoshihiko Hayashi
Until recently, attempting to experimentally quantify the vulnerabilities of structures to ignition from firebrand showers has remained elusive. The coupling of a two unique facilities has begun to unravel this difficult problem. The NIST Firebrand
Kevin B. McGrattan, Andrew J. Lock, Nathan D. Marsh, Marc R. Nyden
This report documents the first phase of a multi-year program called CHRISTIFIRE (Cable Heat Release, Ignition, and Spread in Tray Installations during Fire). The overall goal of the program is to quantify the burning characteristics of grouped electrical
Sayaka S. Suzuki, Samuel Manzello, Yoshihiko Hayashi
Wildfires that spread into communities, commonly referred to as Wildland-Urban Interface Fires (WUI), are a significant international problem. Post-fire damage studies have suggested for some time that firebrands are a significant cause of structure
This work presents estimates of time histories of pressure coefficients at several taps on the roof of a 1/200 model of a 200 x 100 x 20 ft low-rise building with a 1/24 slope gable roof building. The estimates were obtained by large eddy simulation (LES)
Wenjuan Wei, Sylvester M. Greer, Cynthia H. Reed, Andrew K. Persily, Yinping Zhang
A liquid-inner tube diffusion-film-emission (LIFE) reference was developed to quickly evaluate the performance of a chamber system for furniture/building material VOC emission tests. The reference has a constant emission rate determined by an analytical
Previously we quantified the chemical and mechanical deterioration of polyaramid and polybenzimidazole-based protective clothing fabrics that resulted from concurrent thermal, moisture, and simulated sunlight exposure. This paper reports on individual
Chiara F. Ferraris, Paul E. Stutzman, William F. Guthrie
Rheological measurements are often performed using a rotational rheometer. In this type of rheometer, the tested fluid is sheared between two surfaces, one of which is rotating [1]. Usually, the angular velocity is imposed and the response of the material
Dong H. Rim, Lance L. Wallace, Steven J. Nabinger, Andrew K. Persily
Cooking stoves are one of the most common combustion sources of indoor ultrafine particles (UFP). UFP have been observed to be associated with adverse health effects such as respiratory and cardiovascular diseases. This study investigates the effectiveness
Amanda P. Robbins, Erica D. Kuligowski, Steve M. Gwynne
A systematic approach to the identification of fire-safety scenarios for analysis is desirable in order to identify important scenarios and to help ensure a consistent approach for different analysts. The number of possible fire-safety scenarios in any
Marc L. Levitan, Long T. Phan, Erica D. Kuligowski, Franklin T. Lombardo, David P. Jorgensen
Following the May 22, 2011 tornado that devastated the City of Joplin, NIST sent four engineers to Missouri on May 24 through May 28 to conduct a preliminary reconnaissance. Based on analysis of the data collected and other criteria required by law and
Mani Golparvar-Fard, Behshad Ghadimi, Kamel Saidi, Geraldine Cheok, Marek Franaszek, Robert R. Lipman
This paper presents a new image-based approach for 3D mapping the locations of the rebar and embedded components in a railway bridge deck prior to placement of concrete. Our approach enables practitioners to quickly and automatically identify where the
Richard D. Peacock, Erica D. Kuligowski, Jason D. Averill
Historically, building egress systems have evolved in response to specific large loss incidents. Currently, systems are designed around a concept of providing stair capacity for the largest occupant load floor in the building with little or no
Building designers, contractors, owners and managers have long been challenged with providing quality indoor environments at a reasonable energy cost. Current efforts to improve building energy efficiency, including goals of sustainability and net-zero
The scope of this chapter is to introduce the current technology for measuring the rheological properties of concrete. The need to evaluate or assess the flow properties of concrete has resulted in the invention or design and standardization of hundreds of
Samuel L. Manzello, Sayaka S. Suzuki, Yoshihiko Hayashi
An experimental campaign was undertaken to determine vulnerabilities of siding treatments, walls fitted with eaves, and glazing assemblies to firebrand bombardment using the NIST Dragon installed in the Building Research Institutes Fire Research Wind
This report documents the beyond-design-basis test results of the performance of one metallic and two elastomeric seals typically used in spent fuel transportation packages. Tests were conducted using a scale-model package made of stainless steel SS 304
Rodney A. Bryant, Erik L. Johnsson, George W. Mulholland
A series of experiments was performed to characterize the time response of a large-scale open calorimeter to square-wave pulses in terms of peak heat release rate, width of the peak, and conservation of energy. Quantitative heat release rate measurements
There is a lack of understanding of how structural systems perform under realistic, uncontrolled fires. Current specifications for the design of steel structures in the US do not include fire effects as part of structural design. Instead, fire protection
Firefighters often arrive at structures in which the state of fire progression can be described as ventilation-controlled or under-ventilated. This means that inside the enclosure the pyrolyzed fuel has consumed most, if not all of the available oxygen
Anthony P. Hamins, Jason D. Averill, Richard G. Gann, Nelson P. Bryner, Rick D. Davis, David T. Butry, Alexander Maranghides, Jiann C. Yang, Daniel M. Madrzykowski, Matthew F. Bundy, Samuel L. Manzello, Jeffrey W. Gilman, Francine K. Amon, William E. Mell
The burden of fire on the U.S. economy continues to be large, comprising approximately $280 billion annually, or 2 percent of GDP. Over the last 30 years, civilian fire deaths and injuries have decreased due to the efforts of many people and organizations
Douglas M. Fox, Jieun Lee, Mauro Zammarano, Dimi Katsoulis, Donald V. Eldred, Luke Haverhals, Paul C. Trulove, Hugh C. De Long, Jeffrey W. Gilman
Cellulose-reinforced composites have received much attention due to their structural reinforcing, light weight, biodegradable, non-toxic, low cost and recyclable characteristics. However, the tendency for cellulose to aggregate and its poor dispersion in
Mauro Zammarano, Szabolcs Matko, Rick D. Davis, Roland H. Kraemer
Smoldering is a self-sustaining heterogeneous oxidation reaction that induces a slow, low temperature, flameless combustion.1 Flexible polyurethane foams (PUF) are particularly prone to smoldering due to their high air permeability and low density. In this
An in-depth analysis of U.S. residential fire statistics shows that although the total number of fires and deaths due to mattress fires has dropped as a result of several regulatory approaches, the number of deaths per 1000 mattress/bedding fires has
Phase change materials (PCM) have been suggested as a means to increase the thermal protective performance of structural fire fighting protective ensembles (FFPE) by taking advantage of the thermal energy required for to change phase. The National