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Buildings & Construction

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Displaying 376 - 400 of 3873

Simulating Enclosure Fire Dynamics

February 19, 2017
Author(s)
Howard R. Baum
At least three different physics based approaches to fire dynamics simulations have evolved over the years; lumped parameter or ''zone models'', computational fluid dynamics models based on classical trubulence modeling techniques, and large eddy

Simulating Enclosure Fire Dynamics and Suppression

February 19, 2017
Author(s)
Howard R. Baum, Kevin B. McGrattan
At least three different physics based approaches to fire dynamicssimulations have evolved over the years; lumped parameter or ''zone models'',computational fluid dynamics models based on classical turbulence modelingtechniques, and large eddy simulations

Simulating Fire Dynamics and Thermal Response of Structural Elements

February 19, 2017
Author(s)
Kuldeep Prasad, Howard R. Baum
Simulation of the effects of severe fires on the structural integrity of builings requires a close coupling between the gas phase energy release andtransport phenomena and the stress analysis in the load bearing materials. The connection between the two is

Smoke Toxicity Data for Fire Hazard and Risk Assessment of Cable Products

February 19, 2017
Author(s)
Richard Gann, Richard D. Peacock, Jason D. Averill, Marc R. Nyden
This report presents the methodology for and results from a series of room-scale fire tests to produce data on the yields of toxic products in both pre-flashover and post-flashover fires. Trays of common household electric cable burned in a room with a

Standardized Cost Structure for the Environmental Industry

February 19, 2017
Author(s)
Harold E. Marshall, Bryan Skokan, Dan Melamed, Karen Guevara, George Bierman
The underlying key to developing successful estimates, tracking projects costs, and utilizing historical project cost information is the development of standardized and well defined hierarchical listing of cost categories. Committees within OECD/NEA and

Structural Analysis of a High-Rise Composite Frame Exposed to Fire

February 19, 2017
Author(s)
Dat Duthinh, Kuldeep Prasad
This paper presents a simplified, planar analysis of World Trade Center Tower 1 (WTC1), starting from a computer simulation of the fire using computational fluid dynamics, and progressing through a thermal and a structural analysis of the damaged structure

Surface and Interface Properties of Crosslinked Amine-Cured Epoxies

February 19, 2017
Author(s)
Tinh Nguyen, G Xiaohong, M Giraud, Mark R. VanLandingham, Jonathan W. Martin
The surface and film/substrate interface properties of a coating system have a strong influence on its adhesion and durability. However, both the surface and interface chemical composition and microstructure of a crosslinked coating applied to a substrate

Survey of the State-of-the-Art for Ocean Wave Energy Conversion Systems

February 19, 2017
Author(s)
Kathryn Butler, Marc R. Nyden, William G. Rippey
It is possible to generate electrical energy from the motion of water due to ocean tides and waves. Oceans are a much more ubiquitous source of flowing water than river gorges, and the ability to efficiently harness this energy could potentially solve many

Testing of an Alternate Smoking Material

February 19, 2017
Author(s)
Richard Gann
ASTM test method E2187-02b is not appropriate for measuring the ignition strength of a cigarette-shaped smoking material that does not have a tobacco column that burns during smoking. This letter reports a measurement of the relative ignition strength of

The AASHTO Accreditation Program: Serving the HMA Industry

February 19, 2017
Author(s)
Robert A. Lutz, J B. Hewston, D Savage, Peter Spellerberg
The American Association of State Highway and Transportation Officials (AASHTO) has been accrediting hot mix asphalt testing laboratories under the AASHTO Accreditation Program (AAP) since 1988. Laboratories must satisfy many quality system criteria, as

The ACBM/NIST Computer Modelling Workshop: 1990-1998

February 19, 2017
Author(s)
Edward Garboczi
Introduction to, survey of, and advertisement for the ACBM/NIST Computer Modelling Workshop, over the years 1990-1998. This workshop is to train people in the computational materials science of concrete, as developed at NIST under ACBM. To appear in a bi

The Economic Impact of Manufacturing Extension Centers

February 19, 2017
Author(s)
M A. Ehlen
A recent U.S. Census survey indicates that the two Illinois manufacturing extension centers, affiliated with the national Manufacturing Extension Partnership, have improved the performance of small Illinois firms and the Illinois state economy. Over a two

The Effects of Nanostructure on the Stability of Nanocomposite Building Materials

February 19, 2017
Author(s)
Marc R. Nyden, Samuel Manzello, Richard H. Harris Jr.
Thermoplastics and composites made from hydrocarbon polymers can improve the affordability, strength-to-weight ratio, and durability of manufactured products. Unfortunately, the use of these materials in buildings and vehicles is limited because of their
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