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Displaying 2451 - 2475 of 3890

Using the Virtual Cybernetic Building Testbed and FDD Test Shell for FDD Tool Development

October 1, 2001
Author(s)
Steven T. Bushby, Natascha S. Milesi-Ferretti, Cheol D. Park, Michael A. Galler
vances in building automation technology have taken place for a variety of building services including heating, ventilating, and air conditioning (HVAC) control systems, lighting control systems, access control systems, and fire detection systems. In spite

Comparison of Concrete Rheometers: International Tests at LCPC (Nantes, France) in October 2000

September 5, 2001
Author(s)
Chiara F. Ferraris, L Brower, D Beaupre, F Chapdelaine, P Domone, E Koehler, L Shen, M Sonebi, Leslie Struble, D Tepke, O Wallevik, J Wallevik
The American Concrete Institute (ACI) sub-committee 236A, Workability of Fresh Concrete, upon its creation in fall 1999, immediately faced the task of determining appropriate methods to measure concrete workability. Using a material science-based approach

Object Identification Using Bar Codes Based on LADAR Intensity

September 1, 2001
Author(s)
William C. Stone, Geraldine S. Cheok, K M. Furlani, David E. Gilsinn
Tests of a novel concept for tracking construction components were carried out at the National Institute of Standards and Technology. The approach makes use of laser radar and retro-reflective barcodes attached to manufactured building materials. Tests

Sorptivity-Based Service Life Predictions for Concrete Pavements

September 1, 2001
Author(s)
Dale P. Bentz, M A. Ehlen, Chiara F. Ferraris, Edward J. Garboczi
The degradation of concrete pavements is often controlled by the transport of a deleterious species (chloride or sulfate ions, or water in the case of freeze/thaw) into the concrete. With this in mind, a three-year research project, funded by the Federal

NIST/BFRL CALIBRATION SYSTEM FOR HEAT-FLUX GAGES

August 6, 2001
Author(s)
William M. Pitts, James R. Lawson, John R. Shields
This report of test describes a heat-flux gage calibration system that was developed at the National Bureau of Standards during the 1970s. It is based on a commercial radiant heater incorporating a tungsten lamp and elliptical mirror. A kaleidoscope flux

Analysis of the Impedance Spectra of Short Conductive Fiber-Reinforced Composites

August 1, 2001
Author(s)
J M. Torrents, T Mason, A Peled, S Shah, Edward Garboczi
The presence of small amounts of short conductive fibers in a composite of finite matrix conductivity results in the subdivision of the one matrix impedance arc into two separate low and high frequency arcs in the complex impedance plane. These features

BACnet Unraveled

August 1, 2001
Author(s)
Steven T. Bushby
Publication of ASHRAE and ANSI's BACnet communication protocol in 1995 ushered in a new era for building automation and control systems, making it possible to integrate building control products designed by different manufacturers. This change has proved

Building Integrated Photovoltaic Test Facility

August 1, 2001
Author(s)
Arthur H. Fanney, Brian P. Dougherty
The widespread use of building integrated photovoltaics appears likely as a result of the continuing decline in photovoltaic manufacturing costs, the relative ease in which photovoltaics can be incorporated within the building envelope, and the fact that

Fire Alarm Systems With Building Automation and Control Systems

August 1, 2001
Author(s)
Steven T. Bushby
Integrating fire alarm systems with building automation systems can result in many economic and operational benefits. Such integration requires communication standards and careful design practices. BACnet is an internationally recognized communication

Heat Feedback to the Fuel Surface in Pool Fires (NIST SP 971)

August 1, 2001
Author(s)
Anthony P. Hamins, S. J. Fischer, Takashi Kashiwagi
A series of measurements designed to investigate the heat feedback in pool fires burning liquid fuels are reported. Such measurements are essential for the development and validation of detailed models which predict the burning rate of liquid hydrocarbons

International Study of the Sublethal Effects of Fire Smoke on Survivability and Health (SEFS): Phase 1. Final Report (NIST TN 1439)

August 1, 2001
Author(s)
Richard G. Gann, Jason D. Averill, Kathryn M. Butler, Walter W. Jones, George W. Mulholland, J L. Neviaser, Thomas J. Ohlemiller, Richard D. Peacock, Paul A. Reneke, J R. Hall
Fire smoke toxicity has been a recurring theme for fire safety professionals for over four decades. There especially continue to be difficulty and controversy in assessing and addressing the contribution of the sublethal effects of smoke in hazard and risk
Displaying 2451 - 2475 of 3890
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