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Buildings & Construction

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Displaying 276 - 300 of 3878

Effect of Carbon Nanofiber Network Formation on Flammability of Flexible Polyurethane Foams

February 19, 2017
Author(s)
Mauro Zammarano, Roland H. Kraemer, Richard H. Harris Jr., Thomas J. Ohlemiller, John R. Shields, Sameer Rahatekar, Jeffrey W. Gilman
Polyurethane flexible foams (PUFs) are used extensively as upholstery and bedding materials. Untreated PUFs are prone to rapid fire growth due to their low density and thermal conductivity. Furthermore, the low viscosity of the decomposition products

Energy Escalation Rate Calculator (EERC1.0-03)

February 19, 2017
Author(s)
L I. Schultz, S Fuller
The Energy Escalation Rate Calculator (EERC) computes an average annual escalation rate for fuel prices, based on the annual energy price forecasts of the Energy Information Administration (EIA) of the U.S. Department of Energy (DOE). This rate is used to

Factors Affecting the Service Life of Seams of EPDM Roof Membranes

February 19, 2017
Author(s)
Walter J. Rossiter Jr, Jonathan W. Martin
A quarter century ago, a revolution occurred in the U.S. low-sloped roofing industry with the introduction of a number of new membrane products including elastomeric and thermoplastic polymeric membranes and polymer-modified bituminous membranes. Today

Federal Investigation of the Evacuation of the World Trade Center on September 11, 2001

February 19, 2017
Author(s)
Jason D. Averill, Dennis S. Mileti, Richard D. Peacock, Erica D. Kuligowski, N Groner, Guylene Proulx, H Nelson
This paper presents the findings of the NIST World Trade Center Investigation describing the occupant evacuation of WTC 1 and WTC 2 on September 11, 2001. The egress system, including stairwells and elevators, is described along with the evacuation

Final Report for:EPA: LAG No. DW-13-93903501-0 Expanding a Tool for Predicting Chloride Diffusivity in Concrete So It Can Be Used by Manufacturers to Evaluate the Durability of Concrete Made With Blended Cements. Part I: Characterizing Blended Cement...

February 19, 2017
Author(s)
X Feng, Edward Garboczi, Jeffrey W. Bullard, Kenneth A. Snyder, Paul E. Stutzman, T Mason
This report summarizes a project that dealt with the characterization of a fly ash and fly-ash blended cement material, so that these could be incorporated into the Virtual Cement and Concrete Testing Laboratory (VCCTL) software. The information generated

Fire as a Building Load

February 19, 2017
Author(s)
Richard W. Bukowski
The concept of designing buildings to resist loads is fundamental to the design and regulatory process. Fire has traditionally been addressed differently because fires are difficult to describe in the same way as other building loads. This paper proposes a

Fire Endurance Testing of Floor Systems Effects of Scale and Restraint

February 19, 2017
Author(s)
John L. Gross
Three standard fire resistance tests (ASTM E 119) were conducted on a composite floor system to study the effects of 1) test restraint conditions, and 2) scale of the test. Two full-scale tests, 35 ft (10.7 m) span, and one half-scale test, 17 ft (5.2 m)

Fire Modeling Analysis: Dwight D. Eisenhower Executive Office Building

February 19, 2017
Author(s)
D W. Stroup
This report describes results obtained from a fire protection engineering analysis of an historic government office building located in Washington, DC. The Dwight D. Eisenhower Executive Office Building is a five story building constructed in the 1870 s to

Fire Structure Interface for the World Trade Center Towers

February 19, 2017
Author(s)
Kuldeep Prasad, Howard R. Baum
The collapse of the World Trade Center towers on September 11, 2001, resulting from a combination of aircraft impact damage and subsequent fires, was studied as part of the Federal Building and Fire Safety Investigation of the World Trade Center Disaster

First-Principles Zone-Center Theory of Superconductivity in MgB 2

February 19, 2017
Author(s)
Taner N. Yildirim, O Gulseren
We have carried out first-principles calculation of Tc and other relevant parameters of the new 40 K superconductor MgB2. Our results are in excellent agreement with the neutron measurements of phonons as well as with the measured boron isotope effect and
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