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Buildings & Construction

Structural engineering

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Displaying 51 - 75 of 155

Structural Performance of Nuclear Power Plant Concrete Structures Affected by Alkali-Silica Reaction (ASR). Task 3: Assessing Cyclic Performance of ASR-Affected Concrete Shear Walls

September 27, 2021
Author(s)
Jonathan Weigand, Fahim H. Sadek, Travis Thonstad, Sorin Marcu, Rudy Villegas, Long Phan, Adam L. Pintar
This report describes the results of Task 3 of a five-task comprehensive research program conducted at the National Institute of Standards and Technology (NIST) under the sponsorship of the U.S. Nuclear Regulatory Commission (NRC). The overall study aims

New Connections for Enhancing Robustness of Precast Concrete Frame Structures

May 18, 2021
Author(s)
Travis Thonstad, Jonathan Weigand, Joseph Main, Hai Lew
The National Institute of Standards and Technology is continuing its research on the mitigation of disproportionate collapse in structural systems typical of U.S. building construction. As part of this research, two ten-story precast concrete moment frame

Simulations of Flow Over an Axisymmetric Hill

February 26, 2021
Author(s)
Rikhi Bose, DongHun Yeo
In this report, high-Reynolds number turbulent flow around an axisymmetric hill is studied using large eddy and unsteady Reynolds averaged Navier-Stokes simulations and the results are extensively validated against experiment. The boundary-layer thickness

Structural Performance of Nuclear Power Plant Concrete Structures Affected by Alkali-Silica Reaction (ASR) - Task 1: Assessing In-Situ Mechanical Properties of ASR-Affected Concrete

February 8, 2021
Author(s)
Fahim H. Sadek, Travis E. Thonstad, Sorin Marcu, Jonathan Weigand, timothy J. barrett, Hai S. Lew, Long Phan, Adam L. Pintar
This report describes the results of Task 1 of a five-task comprehensive research program being conducted at the National Institute of Standards and Technology (NIST) under the sponsorship of the U.S. Nuclear Regulatory Commission (NRC). The overall study

Structural Performance of Nuclear Power Plant Concrete Structures Affected by Alkali-Silica Reaction (ASR) - Task 2: Assessing Bond and Anchorage of Reinforcing Bars in ASR-Affected Concrete

February 3, 2021
Author(s)
Travis E. Thonstad, Jonathan Weigand, Fahim H. Sadek, Sorin Marcu, timothy J. barrett, Hai S. Lew, Long Phan, Adam L. Pintar
This report describes the results of Task 2 of a five-task comprehensive research program being conducted at the National Institute of Standards and Technology (NIST) under the sponsorship of the U.S. Nuclear Regulatory Commission (NRC). The overall study

Application of ASCE 41 to a two-story CFS building

October 22, 2020
Author(s)
Matthew Speicher, Zhidong Zhang, Benjamin W. Schafer
The objective of this paper is to summarize the evaluation results from applying the updated performance-based seismic design provisions: ASCE 41-17, on a cold-formed steel framed building sited in a location with high seismic demands. The assessment

Seismic Evaluation of a 2-Story Cold-Formed Steel Framed Building using ASCE 41-17

September 29, 2020
Author(s)
Matthew S. Speicher, Ivana Olivares, Benjamin W. Schafer
The objective of this report is to assess the adequacy of new provisions in ASCE 41 for seismic assessment of cold-formed steel framed buildings. A two-story cold-formed steel (CFS) framed building that has been designed to contemporary seismic standards

Activities and Lessons Learned from ACI Committee 133 - Disaster Reconnaissance

September 13, 2020
Author(s)
Lucas A. Laughery, Aishwarya Y. Puranam, Christopher Segura, Anahid A. Behrouzi
ACI Committee 133 Disaster Reconnaissance was established with the mission of reporting on the effects of major disasters on reinforced concrete (RC) structures. ACI 133 members monitor natural and manmade disasters worldwide to identify events that affect

Loading Protocols and Backbone Curves: U.S. and Japan Perspectives

September 13, 2020
Author(s)
Bruce F. Maison, Kazuhiko Kasai, Matthew Speicher
With the gaining popularity of performance-based engineering, it is essential to have reliable estimates of component (e.g., steel beam or column) performance under actual earthquake loading demands. In the United States, a component backbone curve

Seismic Stability Assessment of Steel Moment Frames and Implications for Design

September 13, 2020
Author(s)
Larry Fahnestock, Shitao Shi, Matthew Speicher
Although it is clear that a building must be capable of carrying gravity loads while developing large inelastic deformations and associated lateral displacements during a large earthquake, achieving this performance objective in day-to-day practice still

Modern reassessment of the Citicorp Building design wind loads

June 15, 2020
Author(s)
Dat Duthinh
Following structural engineering practice of the 1970s, engineers designed the Citicorp Building for the action of wind in each of the structure’s principal axes. One problem they faced was how to determine design values by combining simultaneous wind

Experimental investigation of structural steel beams subjected to localized fire

May 29, 2020
Author(s)
Selvarajah Ramesh, Lisa Y. Choe, Chao Zhang
This paper presents an experimental behavior of unprotected W16 × 26 steel beams subjected to localized fire. Beam specimens were either simply supported or connected to steel columns via all bolted double angle connections. Two test fires, steady or

Collapse Risk of Steel Special Moment Frames per FEMA P695

February 5, 2020
Author(s)
Matthew S. Speicher, Jazalyn D. Dukes, Kevin K. Wong
The American Society of Civil Engineers (ASCE) performance-based seismic design standard, ASCE 41, contains methodologies used by practicing engineers to assess existing buildings and to design new buildings. In 2015, the National Institute of Standards
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