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Author: hai lew
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1. 1994 Northridge Earthquake: Performance of Structures, Lifelines and Fire Protection Systems (NIST SP 862)
Series: Special Publication (NIST SP)
Report Number: 862
Published: 5/1/1994
Authors: Nicholas J. Carino, R M Chung, Hai Sang Lew, A W. Taylor, William D. Walton
Abstract: A magnitude 6.8 (Ms) earthquake centered under the community of Northridge in the San Fernando Valley shook the entire Los Angeles metropolitan area at 4:31 a.m. local time on Monday, January 17, 1994. Moderate damage to the built environment was wid ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908750

2. A Simple Method to Enhance Catenary Action Development in Beams of RC Frame Structures
Published: 12/1/2013
Authors: Yihai Bao, Hai Sang Lew, Fahim Sadek, Joseph A Main
Abstract: A simple debonding technique is proposed to reduce or eliminate strain localization in reinforcing bars in the region of wide flexural cracks in RC beams, and as a result enhance the resistance of RC buildings to disproportionate collapse. In this st ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914051

3. A Summary of Reconnaissance of the Clinton, MO Elks Lodge Building Collapse on June 26, 2006
Published: 7/12/2006
Authors: Hai Sang Lew, Long Thanh Phan
Abstract: A three-story unreinforced brick building in Clinton, MO, collapsed on June 26, 2006 causing one fatality. The building was built in the 1880s. Two NIST structural engineers visited the collapse site on June 29, 2006. The NIST engineers inspected th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860671

4. Alkali-Silica Reaction Degradation of Nuclear Power Plant Concrete Structures: A Scoping Study
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7937
Published: 3/11/2013
Authors: Kenneth Alan Snyder, Hai Sang Lew
Abstract: Alkali-silica reaction (ASR) is a concrete degradation phenomenon in which the alkalis that are typically found in concrete react with certain amorphous or micro-crystalline siliceous phases in the aggregate and, in the presence of moisture, form ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913633

5. An Experimental and Computational Study of Reinforced Concrete Assemblies under a Column Removal Scenario
Series: Technical Note (NIST TN)
Report Number: 1720
Published: 10/26/2011
Authors: Hai Sang Lew, Yihai Bao, Fahim Sadek, Joseph A Main, Santiago Pujol, Mete Sozen
Abstract: This report presents an experimental and computational study of two reinforced concrete beam-column assemblies, each comprising three columns and two beams. The two beam-column assemblies represent portions of the structural framing system of two ten ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908857

6. An Experimental and Computational Study of Steel Moment Connections under a Column Removal Scenario
Series: Technical Note (NIST TN)
Report Number: 1669 rev2
Published: 3/1/2011
Authors: Fahim Sadek, Joseph A Main, Hai Sang Lew, Stephen D Robert, Vincent Chiarito, Sherif El-Tawil
Abstract: This report presents an experimental and computational study of two steel beam-column assemblies, each comprising three columns and two beams. The two beam-column assemblies represent portions of the structural framing system of two ten-story steel f ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906046

7. Analysis Procedures for Progressive Collaspe of Buildings
Series: Special Publication (NIST SP)
Report Number: 1025
Published: Date unknown
Author: Hai Sang Lew
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860578

8. Analysis of Construction Conditions Affecting the Structural Response of the Cooling Tower at Willow Island, West Virginia (NBS IR 80-2010)
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 80-2010
Published: 7/30/1980
Authors: Hai Sang Lew, S. G. Fattal
Abstract: The initial investigation of the Willow Island cooling tower collapse (NBS IR 78-1578)established that the most probable cause of the collapse was the imposition of construction loads on the tower before the concrete had gained adequate strength. Th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908937

9. Are Serviceability Requirements Covered Adequately in Current Codes and Standards?
Published: 10/16/2005
Author: Hai Sang Lew
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=100916

10. Assessment of Robustness and Disproportionate Collapse Vulnerability of Steel Moment-Frame Buildings
Published: 8/19/2009
Authors: Joseph A Main, Fahim Sadek, Hai Sang Lew
Abstract: Several prototype steel moment-frame buildings have been designed for the purpose of assessing their vulnerability to progressive collapse. The buildings were designed for moderate and high seismic regions. This paper summarizes the development of th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902887



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