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Author: fahim sadek

Displaying records 41 to 50 of 75 records.
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41. Achieving Safer and More Economical Buildings Through Database-Assisted, Reliability-Based Design for Wind
Published: 12/1/2003
Authors: Emil Simiu, Fahim Sadek, T Whalen, S Jang, L L Lu, S M Diniz, A Grazini, Michael A Riley
Abstract: Following Irminger's 1894 aerodynamic tests, Flachsbart's 1932 boundary-layer wind tunnel experiments, and University of Western Ontario (UWO) 1970's tests, considerable progress has been achieved in low-rise building design for wind. Nevertheless, ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860417

42. Discussion of Definition of Wind Profiles in ASCE 7 by Yin Zhou and Ahsan Kareem
Published: 11/1/2003
Authors: Emil Simiu, Fahim Sadek, Michael A Riley
Abstract: The discussion presents a critique of a paper published in the Journal of Structural Engineering, Aug. 2002, pp. 1082-1086. The main points of the discussion are: (1) the ASCE Standard definition of wind profiles is inconsistent with the ASCE definit ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860459

43. Experimental Testing of Roof to Wall Connections in Wood Frame Houses
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6938
Published: 4/1/2003
Authors: Michael A Riley, Fahim Sadek
Abstract: The majority of residential construction in the United States is wood-frame construction. These buildings perform well under gravity loads, but considerable damage has been observed in such structures after significant earthquakes and major hurrican ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860470

44. Wind Speeds in ASCE 7 Standard Peak-Gust Map: Assessment
Published: 4/1/2003
Authors: Emil Simiu, R Wilcox, Fahim Sadek, James J Filliben
Abstract: The ASCE 7 peak-gust map division of the conterminous United States into two adjacent wind speed zones does not reflect correctly the country's differentiated extreme wind climate. The methodology used to develop the map averages out real climatolog ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860373

45. Wind Speeds in the ASCE 7 Standard Peak-Gust Map: An Assessment
Published: 4/1/2003
Authors: Emil Simiu, R Wilcox, Fahim Sadek, James J Filliben
Abstract: The ASCE 7 peak-gust map division of the conterminous United States into two adjacent wind speed zones does not reflect correctly the country's differentiated extreme wind climate. The methodology used to develop the map averages out real climatolog ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860374

46. Distribution of Earthquake Input Energy in Structures
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6903
Published: 1/1/2003
Authors: P Khashaee, B Mohraz, Fahim Sadek, Hai Sang Lew, John L Gross
Abstract: In developing an energy-based design approach and assessing the damage potential of structures, one must know the distribution of earthquake input energy among energy components: kinetic, elastic strain, hysteretic, and damping. This report examines ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860444

47. Database-Assisted Wind Load Capacity Estimates for Low-Rise Steel Frames
Published: 12/1/2002
Authors: S Jang, L L Lu, Fahim Sadek, Emil Simiu
Abstract: A comparative study is presented of the estimated wind load capacities of low-rise steel building frames based on loading patterns (magnitude and distribution) established from aerodynamic databases on the one hand, and on patterns specified in the A ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860331

48. Database-Assisted Design for Wind: Basic Concepts and Software Development
Published: 11/1/2002
Authors: T Whalen, Fahim Sadek, Emil Simiu
Abstract: Standard provisions for wind loads on buildings have traditionally been based on summary tables and/or plots suitable for slide-rule calculations. The accuracy in the definition of wind loads inherent in such tables and plots is far lower than that i ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860398

49. Time-Dependent Wind Effects: Database-Assisted Design and Estimation of Ultimate Limit States for Rigid and Flexible Structures
Published: 11/1/2002
Authors: Fahim Sadek, Emil Simiu, S Jong, L W Lu
Abstract: We describe the database-assisted design approach for wind loading, and its application for estimating limit states including ultimate limit states for low-rise buildings and tall buildings experiencing along-wind, across-wind, and torsional dyna ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860458

50. Control of Hysteretic Structures Using H(inf) Algorithm and Stochastic Linearization Techniques
Published: 7/1/2002
Authors: Fahim Sadek, M Ben Ftima, S El-Borgi, G P McCormick, Michael A Riley
Abstract: This paper presents a robust static output feedback H(infinity) algorithm for control of hysteretic civil engineering structures subjected to earthquake ground motions. Hysteretic structures present a problem for control design and algorithm develop ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860427



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