Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications by:

Search Title, Abstract, Conference, Citation, Keyword or Author
Displaying 26 - 45 of 45

Workshop on Quantitative Tools for Condition Assessment of Aging Infrastructure

October 14, 2010
Author(s)
Ward L. Johnson, Thomas A. Siewert, Jessica Terry, Dat Duthinh, Mark Iadicola, William E. Luecke, Joseph D. McColskey
The Quantitative Tools for Condition Assessment of Aging Infrastructure Workshop was held May 4-5, 2010, in Boulder, Colorado. It was organized by a team of researchers within the National Institute of Standards and Technology s (NIST) Materials Science

Block shear failure of steel gusset plates

July 1, 2010
Author(s)
Chiara Crosti, Dat Duthinh
Following the catastrophic failure of the I-35W bridge in Minnesota in 2007, the Federal Highway Admin-istration issued guidelines for the load rating of bolted and riveted gusset plates in truss bridges (FHWA, 2009). This paper develops finite-element

Mean Recurrence Intervals of Failure Wind Loads

August 1, 2008
Author(s)
Dat Duthinh, Joseph A. Main, Amelia P. Wright, Emil Simiu
The Commentary to the ASCE Standard 7-05 states that the nominal mean recurrence interval (MRI) of the wind speed inducing the design strength is about 500 years if the specified load factor is 1.5, as in early versions of ASCE 7, and somewhat higher than

Recent Advances in Fire-Structure Analysis

February 1, 2008
Author(s)
Dat Duthinh, Kevin B. McGrattan, Abed M. Khaskia
One of the recommendations of the National Construction Safety Team for the Federal Building and Fire Safety Investigation of the World Trade Center Disaster (NIST NCSTAR 1, 2005) is to enhance the capability of available computational software to predict

Best Practices for Reducing the Potential for Progressive Collapse in Buildings

February 1, 2007
Author(s)
Bruce R. Ellingwood, Robert Smilowitz, D O. Dusenberry, Dat Duthinh, Hai S. Lew, Nicholas J. Carino
This document is intended to provide owners and practicing engineers with current best practices to reduce the likelihood of progressive collapse of buildings in the event of abnormal loading. The report includes a discussion of an acceptable risk approach

Flexural Strengthening of Masonry Walls with External Composite Bars

August 1, 2003
Author(s)
K K. Bajpai, Dat Duthinh
The strengthening of epoxy with milled glass fibers allows full strength development of #2 glass FRP bars in 200 mm or half a concrete masonry unit length. This fiber-reinforced epoxy should be effective for other types of bars as well.With full anchorage

Strength and Ductility of Concrete Beams Reinforced with Carbon FRP and Steel

November 1, 2001
Author(s)
Dat Duthinh, M A. Starnes
Seven concrete beams reinforced internally with steel and externally with carbon fiber-reinforced polymers (FRP) applied after the concrete had cracked were tested under four-point bending. Results show that FRP is very effective for flexural strengthening

Strength of an Interlocking FRP Connection

November 1, 2001
Author(s)
Dat Duthinh, K K. Bajpai
The strength of an interlocking fiber-reinforced polymer (FRP) connection was measured in bending, and in-plane and out-of-plane shear. This connection allows the rapid assembly of FRP panels into houses, and can be used in interlocking mode only, or

Strengthening of Reinforced Concrete Beams with Carbon FRP

May 1, 2001
Author(s)
Dat Duthinh, M A. Starnes
Seven concrete beams reinforced internally with steel and externally with carbon fiber-reinforced polymer (FRP) laminate applied after the concrete had cracked were tested under four-point bending. Results show that FRP is very effective for flexural

Tensile Strength of an Interlocking Composite Connection

October 1, 2000
Author(s)
Dat Duthinh
Twenty-four tests of an interlocking fiber-reinforced polymer (FRP) connection show that, although the connection is much weaker than the theoretical strength of the panel under the same type of load (in-plane tension transverse to the main reinforcement

Shear Strength of High-Strength Concrete Walls and Deep Beams

May 1, 2000
Author(s)
Dat Duthinh
In the last 30 years, the compressive strength of concrete that can be produced reliably in the field has more than doubled, from 35 MPa (5000 psi) to 85 MPa (12 000 psi). Strengths as high as 140 MPa (20 000 psi) can be achieved in the laboratory and, on

Buckling of steel gusset plates

Author(s)
Chiara Crosti, Dat Duthinh
As a result of the structural failure of the I-35W bridge in Minneapolis in 2007, FHWA issued guidelines for the load rating of gusset plates and recommended that the capacity of these plates on non-load-path-redundant steel truss bridges be verified. The