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You searched on: Author: fahim sadek

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1. International R&D Roadmap for Fire Resistance of Structures Summary of NIST/CIB Workshop
Series: Special Publication (NIST SP)
Report Number: 1188
Published: 6/11/2015
Authors: Jiann C Yang, Matthew F Bundy, John L Gross, Anthony P Hamins, Fahim Sadek, Anand Raghunathan
Abstract: This report summarizes the results of the global meeting to develop the International R&D Roadmap for Fire Resistance of Structures (the Roadmap) held May 21‹22, 2014, in Gaithersburg, Maryland. The workshop was sponsored by the National Instit ...

2. Behavior of structural steel moment connections under fire loading
Published: 3/24/2015
Authors: Mina Samir Seif, Joseph A Main, Fahim Sadek
Abstract: Performance-based methodologies to evaluate the fire performance of structures are needed to move beyond the prescriptive procedures presently in use. Analytical methods are needed for simulating the performance of structural systems, including c ...

3. Robustness Assessment of RC Frame Buildings under Column Loss Scenarios
Published: 4/3/2014
Authors: Yihai Bao, Joseph A Main, Hai Sang Lew, Fahim Sadek
Abstract: A computational assessment of the robustness of reinforced concrete (RC) building structures under column loss scenarios is presented. A reduced-order modeling approach is presented for three-dimensional RC framing systems, including the floor slab, ...

4. Robustness of Precast Concrete Frames: Experimental and Computational Studies
Published: 4/3/2014
Authors: Joseph A Main, Yihai Bao, Hai Sang Lew, Fahim Sadek
Abstract: This paper describes both full-scale testing and detailed finite-element modeling of a precast concrete moment-frame assembly extracted from the perimeter moment frame of a 10-story prototype building. The assembly comprises two beam spans and three ...

5. 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 ...

6. Structural Design for Disaster Resilience
Published: 10/28/2013
Authors: Fahim Sadek, Joseph A Main, John L Gross, Therese P McAllister
Abstract: This paper presents a brief overview of research at the National Institute of Standards and Technology (NIST) on disaster resilience of buildings, infrastructure, and communities, including component programs and projects. NIST‰s efforts aim at deve ...

7. Modeling and Analysis of Single-Plate Shear Connections Under Column Loss
Published: 5/8/2013
Authors: Joseph A Main, Fahim Sadek
Abstract: This paper presents a computational assessment of the behavior of single-plate shear (,shear tabŠ) connections in gravity frames under column loss scenarios. Two-span beam assemblies are considered under pushdown loading of the unsupported center col ...

8. Robustness of Steel Gravity Frame Systems with Single-Plate Shear Connections
Series: Technical Note (NIST TN)
Report Number: 1749
Published: 2/27/2013
Authors: Joseph A Main, Fahim Sadek
Abstract: This report presents a computational assessment of the performance of steel gravity framing systems with single-plate shear (,shear tabŠ) connections and composite floor slabs under column loss scenarios. The computational assessment uses a reduced m ...

9. Modeling of Double-Angle Shear Connections for Evaluation of Structural Robustness
Published: 10/31/2012
Authors: Judy Liu, Joseph A Main, Fahim Sadek
Abstract: Improved structural robustness is expected for steel gravity load-resisting frames with double-angle shear connections as compared to single-plate connections, given the larger deformation capacity of the double angle. Detailed models of bolted doubl ...

10. Structural Response of World Trade Center Buildings 1, 2 and 7 to Impact and Fire Damage
Published: 10/18/2012
Authors: Therese P McAllister, John L Gross, Fahim Sadek, Steven W Kirkpatrick, Robert S. MacNeill, Mehdi S Zarghamee, Omer O Erbay, Andrew T Sarawit
Abstract: The National Institute of Standards and Technology (NIST) conducted an extensive investigation of the collapse of World Trade Center towers (WTC 1 and WTC 2) and the WTC 7 building. This paper describes the component, subsystem, and global analyses p ...

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  • SP 250-XX: Calibration Services
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