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Eight full scale experiments were conducted to examine the impact of wind on fire spread through a multi-room structure and examine the capabilities of wind control devices (WCD) and externally applied water streams to mitigate the hazard. The principle
Geraldine S. Cheok, Kamel S. Saidi, Marek Franaszek
The ASTM E57.02 Test Methods Subcommittee is developing a test method to evaluate the ranging performance of a 3D imaging system. The test method will involve either measuring the distance between two targets or between an instrument and a target. The
Minimization of free energy is used to calculate the equilibrium verticalrise and mensicus shape of a liquid column between two closelyspaced, parallel planar surfaces that are inert and immobile. States of minimum free energy are found using standard
This paper quantifies the influence of CuO nanoparticles on the boiling performance of R134a/polyolester mixtures on a roughened, horizontal, flat surface. Nanofluids are liquids that contain dispersed nano-size particles. A lubricant based nanofluid
The NFPA 2001 standard on the use of clean agents for the suppression of fires arose from the phase-out of Halon 1301. Standard methods exists for specifying the amount of clean agent required for Class A and Class B fires, but the recommendation for Class
A mapping between the CIMsteel Integration Standards (CIS/2) and the Industry Foundation Classes (IFC) product data models for structural steel has been developed. The development of the mapping takes a pragmatic approach through a manual inspection of
Richard D. Peacock, Jason D. Averill, Erica D. Kuligowski
Occupant descent down stairwells during building evacuations is typically described by measurable engineering variables such as stairwell geometry, speed, density, and pre-evacuation delay. In turn, predictive models of building evacuation use these
Homes, commercial buildings and the industrial sector together represent 100 percent of the load on the electric grid. Beyond load, these facilities provide a growing amount of electric generation and storage in the form of distributed energy resources
Christopher C. White, Kar T. Tan, Donald L. Hunston
Predicting the service life of building joint sealants exposed to service environments in less than real times has been a need of the sealant community for many decades. Despite extensive research efforts have been made to design laboratory accelerated
The purpose of fire modeling is to gain a better insight into fire dynamics and how it impacts fire safety -- not to generate large amounts of data. Gaining this insight requires visualization tools that display what the numbers generated by the model
Sivaraj Shyam-Sunder, Richard G. Gann, William L. Grosshandler, Hai S. Lew, Richard W. Bukowski, Fahim Sadek, Frank W. Gayle, John L. Gross, Therese P. McAllister, Jason D. Averill, James R. Lawson, Harold E. Nelson, Stephen A. Cauffman
This report describes how the fires that followed the impact of debris from the collapse of WTC 1 (the north tower) led to the collapse of WTC 7; an evaluation of the building evacuation and emergency response procedures; what procedures and practices were
This report analyzes the global response of WTC 7 to fire-induced structural failures and the resulting sequence of component and subsystem failures to determine the events that led to the global collapse of the building. The analysis involved a finite
This report provides technical documentation of how NIST reconstructed the effects of the events on September 11, 2001 on WTC 7. This includes how the fires that followed the impact of debris from the collapse of WTC 1 (the north tower) led to the collapse
David G. Holmberg, Stephen J. Treado, William D. Davis, Steven T. Bushby, Alan B. Vinh, Michael A. Galler, R Vettori
The Building Networks and Public Safety Communications project has three components: (1) addressing feasibility of using building networks for bridging first responder radio communications into buildings, (2) recommending changes to the SAFECOM Statement
The objective of this paper is to examine the evolution of rheological properties (e.g. yield stress) and to evaluate the use of these properties as a way to monitor structure formation and mechanical property development in cementitious systems. The
Geraldine S. Cheok, Kamel S. Saidi, Marek Franaszek
The ASTM E57.02 Test Methods Subcommittee is developing a test method to evaluate the ranging performance of a 3D imaging system. The test method will involve either measuring the distance between two targets or between an instrument and a target. The
Yongcheol Kang, William O'Brien, Stephen R. Thomas, Robert E. Chapman
This paper evaluates the use of Information Technology (IT) and its impact on project and company performance in the construction industry. Using project level data from 139 projects and company level data from 74 companies, the current state of IT use in
Andrew K. Persily, Cynthia H. Reed, Stephanie S. Watson, Nicos Martys, Edward J. Garboczi, Heather Davis
Concerns about building security have resulted in increasing interest in gas phase air cleaning (GPAC) and the need for standard methods to determine the effectiveness of these systems. Similarly, the ability to predict their installed performance, based
Jeffrey W. Bullard, A T. Pauli, Edward J. Garboczi, Nicos Martys
Differential Effective Medium Theory (D-EMT) is applied to derive expressions for the viscosity of a colloidal suspension or an emulsion as a function of the volume fraction of the dispersed phase. The application of D-EMT to this problem depends on how
Francine K. Amon, Anthony P. Hamins, Nelson P. Bryner, Justin Rowe
Thermal imaging cameras (TIC) are rapidly becoming integral equipment for the fire service for use in structure fires and other emergencies. The Building and Fire Research Laboratory (BFRL) at the National Institute of Standards and Technology has
To examine the uncertainty of thermocouple temperature measurements, the present study uses numerical simulations and analytical solutions to investigate the heat transfer processes associated with double shield aspirated thermocouple. This study is
Barbara C. Lippiatt, Marvin Duncan, Zia Haq, Roger Conway
As public policy initiatives, coupled with growing consumer interest have raised the level of interest in the bioeconomy, the question of the appropriate criteria to use in selecting bioproducts, including biofuels, and evaluating their environmental and
Piotr A. Domanski, David A. Yashar, Kenneth Kaufman
This paper presents an interactive finned-tube evaporator and condenser design program, EVAP-COND (ver. 3), which incorporates a computational intelligence module, ISHED (Intelligent System for Heat Exchanger Design), for optimization of refrigerant
In 2004, the National Institute of Standards and Technology (NIST) published an analysis of the ventilation data collected as part of the U.S. EPA Building Assessment Survey and Evaluation (BASE) study [1]. That analysis provided a unique dataset of office
This program1 was conducted for The National Institute For Standards and Technology under Contact Number NA1341-02-W-0686. Hughes Associates, Inc. performed this work with assistance from Greenhorne & O Mara, Inc. and Thornton-Tomasetti-Cutts, LLC. The