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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
Recently the authors introduced a length scale for effectively collapsing the near field centerline velocity and mass fraction of constant and variable density axisymmetric jets whose initial conditions correspond to those of fully developed turbulent pipe
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
Thermal reactivity is an important consideration that impacts the way polymers and the materials that are made from them are processed and used. This realization has provided motivation for the development of a predictive model that can simulate the
A field investigation of tape-bonded seams of EPDM (ethylene propylene diene terpolymer) roof membranes is described. Since the early 1990s the use of tape-adhesive systems for fabricating EPDM seams has increased significantly in the United States. This
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
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
J W. Fleming, M D. Reed, E J. Zegers, B A. Williams, R S. Sheinson
The list of suitable halon alternatives for fire suppression includes aerosols. Both liquid droplets and solid particles have shown promise as potential replacements. Small particles of alkali metal salts have been observed to be more effective on a mass
R R. Skaggs, K L. Mcnesby, R G. Daniel, A W. Miziolek, B Homan
Laser-induced fluorescence and emission spectroscopy are used to measure hydroxyl radical (OH) in reduced pressure, non-premixed, opposed flow CHdair flames suppressed by N2, CF?Br, and Fe(C0)S. For the flames studied, the decrease in OH concentration is
Based on concerns about indoor air quality and trends towards tighter envelope construction, there has been increasing interest in mechanical ventilation of residential buildings in the United States. This paper reports on a simulation study of indoor air
Prompted by the widespread damage to welded beam-to-column connections as a result of the 1994 Northridge earthquake, the National Institute of Standards and Technology (NIST) initiated a study to determine the efficacy of various techniques for the
J. L. Bailey, Walter W. Jones, P. A. Tatem, Glenn P. Forney
This paper describes a new algorithm of the Consolidated Fire Growth and Smoke Transport (CFAST) fire model and compares to data from real scale fire tests conducted onboard the ex-USS SHADWELL, the Navy[s R&D Damage Control Platform. the new phenomenon
The purpose of this investigation is to examine the feasibility of using computed tomography to evaluate the predictive capabilities of fire models. In this pursuit, we have analyzed data from both laboratory- and computer-generated plumes in order to
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
The BEES (Building for Environmental and Economic Sustainability) version 1.0 software implements a rational, systematic technique for selecting environmentally and economically balanced building products. The technique is based on consensus standards and
This is the April 1998 edition of energy price indices and discount factors for performing life-cycle cost analyses of energy and water conservation and renewable energy projects in federal facilities. It will be effective from April 1, 1998, to March 31
This report describes a portion of the work undertaken in Project B.4 (Evaluation of Potential Fire Intervention Materials and Technologies) of the Cooperative Research Agreement between General Motors and NIST. This report was financed by General Motors
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
Cement-based materials are usually composites, where the matrix consists of cement paste. Cement paste is a material formed from the hydration reaction of cement, usually a calcium silicate material, with water. The microstructure of cement paste changes
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
Experiences of catastrophic earthquakes such as San Francisco 1906, Kanto 1923, Northridge 1994, and Kobe 1995 show that great human and economic losses arise from unsatisfactory performance of the built environment: buildings, industrial facilities, and
This report documents the 1997 activities, accomplishments, and staff awards for the Building and Fire Research Laboratory. The accomplishments are organized under the Laboratory's three major thrusts: High Performance Materials and Systems for Constructed
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