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Displaying 2976 - 3000 of 3902

Seismic Performance of Masonry Walls With Bed Joint Reinforcement

July 1, 1998
Author(s)
A E. Schultz, R S. Hutchinson, Geraldine Cheok
In-plane cyclic load tests of partially grouted concrete masonry shear walls with bed joint reinforcement are presented. Specimen design and construction, and simulated seismic testing procedures, are summarized. Lateral force resistance mechanisms are

A Study of a Water-to-Water Heat Pump Using Flammable Refrigerants

June 1, 1998
Author(s)
William V. Payne, Piotr A. Domanski, J Muller
This investigation compared the performance of R22 to the performance of R290 and that of flammable zeotropic mixtures, R32/290 and R32/152a. The tests were conducted in a test apparatus specially designed to simulate a residential water-to-water heat pump

Water Additives for Increased Efficiency of Fire Protection and Suppression

May 28, 1998
Author(s)
Daniel M. Madrzykowski
The Building and Fire Research Laboratory at the National Institute of Standards and Technology, under the sponsorship of the United States Fire Administration, has examined methods for demonstrating the fire protection and suppression effectiveness of

An Apparatus for Evaluating Liquid Fire Suppressants

May 12, 1998
Author(s)
Jiann C. Yang, Michelle K. Donnelly, William L. Grosshandler, N C. Prive
Cup burners have been extensively used as a fire suppression efficiency screening tool for gaseous halon alternatives. In the search for alternatives to halons in fire suppression, it is likely that several types of condensed-phase compounds will be

Automation Infrastructure System for a Robotic 30-Ton Bridge Crane

April 1, 1998
Author(s)
William C. Stone, L E. Pfeffer
This paper describes the sensing portion of a system used to convert an existing 30-ton high bay bridge crane to computer control for automated placement of construction components. The system is being designed to permit either telepresent or fully

Friend or Foe? Communication Gateways

April 1, 1998
Author(s)
Steven T. Bushby
Gateways play an important role in integrating building automation system components made by different manufacturers. This article explores the role gateways play in this application and describes benefits and limitations that need to be considered by

Aircraft Cargo Area Fire Detection (NISTIR 6146)

March 1, 1998
Author(s)
D Blake, J O'Sullivan, S Hammann, M L. Kolleck, Thomas Cleary
Overviews of fire deteciton in aircraft cargo areas were presented by David Blake of the Federal Aviation Administration, John O'Sullivan of British Airways, Scott Hammann of Boeing Company, and Matt Koleck ofBooz-Allen & Hamilton. The breakout discussion

Cement Hydration in the Presence of Municipal Solid Waste Incineration of Fly Ash

March 1, 1998
Author(s)
S J. Remond, Dale P. Bentz, M. Pimpinella, J P. Bournazel
This study is part of a wider research program aimed at developing an assessment methodology of waste-containing concrete. This methodology is developed based on the study of mortars containing an experimental waste: MSWIFA (Municipal Solid Waste
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