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Fire

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Displaying 676 - 700 of 3901

Universal scaling law for the flow of non-Newtonian colloidal suspension

October 1, 2014
Author(s)
Nicos Martys, William L. George, Maxime Liard, Pascal Hebraud, Didier Lootens
It has been observed that flow curves (viscosity vs shear-rate) of spherical non-colloidal particles suspended in a non-Newtonian fluid matrix can be rescaled so as to collapse onto the flow curve of the matrix fluid. This result is surprising given the

A Review of Risk Perception in Building Fire Evacuation

September 25, 2014
Author(s)
Max Kinateder, Erica D. Kuligowski, Paul A. Reneke, Richard Peacock
Risk perception (RP) is studied in many research disciplines (e.g., safety engineering, psychology, and sociology), and the context in which RP is studied varies greatly. Definitions of RP can be broadly divided into expectancy- value and risk-as-feeling

Movement on Stairs During Building Evacuations

September 25, 2014
Author(s)
Erica D. Kuligowski, Richard Peacock, Paul A. Reneke, Emily A. Wiess, Jason D. Averill, Robert Hagwood, Enrico Ronchi, Bryan Hoskins, Michael Spearpoint
The time that it takes an occupant population to reach safety when descending a stairwell during building evacuations is typically described by measureable engineering variables such as stairwell geometry, speed, density, and pre-evacuation delay. In turn

Assessing the Verification and Validation of Building Fire Evacuation Models

September 19, 2014
Author(s)
Enrico Ronchi, Erica D. Kuligowski, Daniel Nilsson, Richard Peacock, Paul A. Reneke
To date there is no International standard on 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, the tests presented within the

White Paper on Fire Behavior of Steel Structures

September 18, 2014
Author(s)
Maria Garlock, Jo? Kruppa, Guo-Qiang Li, Li, Bin Zhao
This white paper presents the state-of-the-art of large-scale experiments, modeling, and performance- based design efforts in fire behavior of steel structures

White Paper on Fire Resistance of Concrete Structures

September 18, 2014
Author(s)
Luke Bisby, Hossein Mostafaei, Pierre Pimienta
This white paper presents the current, international, state-of-the-art large-scale experimental, modeling, and performance-based design (PBD) efforts related to structural fire resistance of concrete structures. The paper addresses these topics with

White Paper on Fire Resistance of Timber Structures

September 18, 2014
Author(s)
Andrew Buchanan, Birgit SP Wood Technology, Sweden tman, Andrea Frangi
Fire resistance of timber structures is a very large field. In order to keep this document relatively small, the scope of is limited as follows: • This report attempts to define a Performance-Based framework for the fire safety design of multi-story timber

Effect of Ozonation on Fungal Resistance of Bamboo and Oak

August 15, 2014
Author(s)
Chi Hoang, Tinh Nguyen, Deborah Jacobs, Andrew K. Persily, Richard Cosi
Wood is gaining increased interest as a renewable building material. However, color changes, chemical and microbiological degradation can occur when lignocellulosic materials are exposed to environmental stressors such as ozone and elevated humidity. In

Infiltration in energy modeling: a simple equation made better

August 8, 2014
Author(s)
Lisa C. Ng, Andrew K. Persily, Steven J. Emmerich
As building envelope performance and HVAC equipment efficiencies continue to be improved to reduce building energy use, a greater percentage of the total energy loss of a building can occur through envelope leakage. Although the energy impacts of

Long Term Air Quality Monitoring in a Net-Zero Energy Residential Test Facility Designed with Specifications for Low Emitting Interior Products

August 6, 2014
Author(s)
Dustin G. Poppendieck, Lisa C. Ng, Matthew P. Schlegel, Andrew K. Persily, Alfred Hodgson
This study evaluated the effectiveness of a low-VOC (volatile organic compounds) specification designed to minimize occupant exposures to indoor air pollutants in a net-zero energy research house meeting the ASHRAE Standard 62.2 ventilation requirements

Long Term Emissions from Spray Polyurethane Foam Insulation

August 6, 2014
Author(s)
Dustin G. Poppendieck, Steven J. Nabinger, Matthew P. Schlegel, Andrew K. Persily
The desire to build more energy efficient homes in the United States has lead to the expansion of the residential spray polyurethane foam (SPF) insulation industry. Annually, over 100,000 homes in the United States are constructed or retrofit using SPF

Simulation Study of Carbon Monoxide Exposure from Portable Generators in U.S. Residences

August 6, 2014
Author(s)
Andrew K. Persily, Steven J. Emmerich, Yanling Wang, Brian J. Polidoro
A simulation study was conducted to evaluate indoor CO exposures as a function of portable generator location and CO emission rate in order to support the development of potential CO emission limits for generators. These simulations employed the multizone

Smart Firefighting Workshop Summary Report

August 6, 2014
Author(s)
Anthony P. Hamins, Nelson P. Bryner, Albert W. Jones, Galen H. Koepke, casey grant, Anand Raghunathan
This report summarizes the results of the Smart Firefighting Workshop held March 24 and 25, 2014, in Arlington, Virginia and sponsored by the National Institute of Standards and Technology (NIST). The Workshop provided a forum to help identify and

Ignition of Mulch Beds Exposed to Continuous-Wind Driven Firebrand Showers

August 3, 2014
Author(s)
Samuel L. Manzello, Sayaka Suzuki, Koji Kagiya, Junichi Suzuki, Yoshihiko Hayashi
A series of experiments were conducted to examine ignition of mulch beds to continuous, wind-driven firebrand showers. Shredded hardwood mulch, fitted in beds 1.2 m by 1.2 m with a thickness of 51 mm, was attached to a non-combustible re-entrant corner

The Use of Elevators for Evacuation in Fire Emergencies in International Buildings

July 21, 2014
Author(s)
Max T. Kinateder, Hidemi Omori, Erica D. Kuligowski
The purpose of this report is to provide an overview of elevator evacuation from high-rise buildings with a focus on the safety of mobility impaired occupants. It addresses the specifics of elevator evacuation as well as relevant building codes and its
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