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Author: hai lew
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Displaying records 21 to 30 of 53 records.
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21. Evaluation of Seismic Performance Parameters
Published: 6/1/1997
Author: Hai Sang Lew
Abstract: Recent earthquakes have shown that buildings designed for life safety could sustain severe damage to structural and nonstructural elements and building contents. In the U.S. several groups have proposed performance-based seismic design approaches to ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860119

22. Experimental and computational assessment of robustness of steel and reinforced concrete framed buildings
Published: 8/1/2011
Authors: Joseph A Main, Yihai Bao, Fahim Sadek, Hai Sang Lew
Abstract: This paper presents an experimental and computational assessment of the performance of full-scale steel and reinforced concrete beam-column assemblies under vertical displacement of a center column, simulating a column removal scenario. The assembli ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907519

23. Final Report of the National Construction Safety Team on the Collapses of the World Trade Center Towers. Federal Building and Fire Safety Investigations of the World Trade Center Disaster (NIST NCSTAR 1) ***DRAFT for Public Comments***
Series: National Construction Safety Team Act Reports (NIST NCSTAR)
Report Number: 1
Published: 9/1/2005
Authors: Sivaraj Shyam-Sunder, Richard George Gann, William L Grosshandler, Jason D Averill, Richard W. Bukowski, Stephen A Cauffman, D D Evans, Frank W Gayle, John L Gross, James R. Lawson, Hai Sang Lew, Therese P McAllister, Harold E. Nelson, Fahim Sadek
Abstract: This is the final report on the National Institute of Standards and Technology (NIST) econstruction of the collapses of the World Trade Center (WTC) towers, the results of an investigation conducted under the National Construction Safety Team Act. Th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909236

24. Final Report on the Collapse of World Trade Center Building 7. Federal Building and Fire Safety Investigation of the World Trade Center Disaster (NIST NCSTAR 1A) ***DRAFT for Public Comments***
Series: National Construction Safety Team Act Reports (NIST NCSTAR)
Report Number: 1
Published: 8/1/2008
Authors: Richard George Gann, William L Grosshandler, Hai Sang Lew, Richard W. Bukowski, Fahim Sadek, Frank W Gayle, John L Gross, Therese P McAllister, Jason D Averill, James R. Lawson, Harold E. Nelson, Stephen A Cauffman
Abstract: This is the final report on the National Institute of Standards and Technology (NIST) investigation of the collapse of World Trade Center Building 7 (WTC 7), conducted under the National Construction Safety Team Act. This report describes how the fir ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909254

25. Global Response Modification Factors vs. Member Ductility-Based Modifiers
Published: 7/1/2002
Authors: S K. Kunnath, Hai Sang Lew, D Friis
Abstract: Most building structures today are designed using the response modification factors (R-factors) given in the code for different types of structural systems. This paper examines whether ductility-based modifiers for structural members (m-factors), re ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860445

26. Gypsum Stairwell Enclosure Wall System Tests under Uniform Static Pressure
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7615
Published: 7/22/2009
Author: Hai Sang Lew
Abstract: The importance of the structural integrity of the exit stairway enclosures was clearly shown by the collapse of the World Trade Center Towers. The investigation report of the National Institute of Standards and Technology recommended that the design, ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903136

27. Investigation of Construction Failure at Harbour Cay Condominium, Cocoa Beach, Florida (NBS BSS 145)
Series: Building Science Series
Report Number: 145
Published: 8/30/1982
Authors: Hai Sang Lew, Nicholas J. Carino, S. G. Fattal, M. E.
Abstract: The investigation of the collapse of a five-story reinforced concrete flat-plate structure under construction at Cocoa Beach, Florida is presented in this report. The investigation included onsite inspection, laboratory tests and anlytical studies. ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908924

28. Investigation of Construction Failure of Reinforced Concrete Cooling Tower at Willow Island, West Virginia (NBS IR 78-1578)
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 78-1578
Published: 11/30/1979
Authors: Hai Sang Lew, S. G. Fattal, J R Shaver, T. A. Reinhold, B. J. Hunt
Abstract: The collapse of the natural-draft hyperbolic concrete cooling tower unit no. 2 at the Pleasants Power Station at Willow Island, West Virginia has been investigated. This investigation included onsite inspections, laboratory tests of construction ass ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908824

29. Investigation of Construction Failure of the Riley Road Interchange Ramp, East Chicago, Indiana (NBSIR 82-2583)
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 82-2593
Published: 10/29/1982
Authors: Nicholas J. Carino, Hai Sang Lew, William C Stone, R M Chung
Abstract: On April 15, 1982, a portion of Ramp C of the Riley Road Interchange in East Chicago, Indiana collapsed during construction and resulted in the death of 13 workers. The Occupational Safety and Health Administration requested the assistance of the Na ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908826

30. January 17, 1995 Hyogoken-Nanbu (Kobe) Earthquake: Performance of Structures, Lifelines, and Fire Protection Systems (NIST SP 901)
Series: Special Publication (NIST SP)
Report Number: 901
Published: 7/1/1996
Authors: R M Chung, D B Ballantyne, E Comeau, T L Holzer, Daniel Madrzykowski, A J Schiff, William C Stone, J Wilcoski, R. D. Borcherdt, J D Cooper, Hai Sang Lew, Jack P. Moehle, L H Sheng, A W. Taylor, I Bucker, John R Hayes, E V Leyendecker, T O'Rourke, M P Singh, M Whitney
Abstract: The January 17, 1995 Hyogoken-Nanbu earthquake of magnitude 7.2 in JMA scale (Mw = 6.9), which struck Kobe, Japan and its surrounding area was the most severe earthquake to affect that region this century. The earthquake resulted in more than 6,000 d ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910273



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