Recent Submissions

  • Research on the Seismic Performance of Rigid Wall Flexible Diaphragm Buildings with Bare Steel Deck Diaphragms 

    Schafer, Benjamin (2019-01-27)
    The objective of this report is to provide a summary of the research activities conducted in 2018 by the author in support of developing seismic design provisions for Rigid Wall Flexible Diaphragm (RWFD) buildings with ...
  • Steel Diaphragm Innovation Initiative Workshop Report 

    Schafer, Benjamin; Easterling, W. Samuel; Sabelli, R; Eatherton, Matthew R; Hajjar, J.F. (2019-03)
    Researchers from the Steel Diaphragm Innovation Initiative (SDII) led a one day workshop in Burlingame California on 10 January 2019 for thirty-five engineering participants to discuss progress to date in the SDII effort, ...
  • Development of Steel Deck Diaphragm Seismic Design Provisions for ASCE 41/AISC 342 

    Wei, G.; Eatherton, M.R.; Schafer, B.W. (2019-01-04)
    The objective of this report is to provide the background work for the development of recommended seismic design provisions for steel deck diaphragms utilizing ASCE 41 / AISC 342. The current (2017) edition of ASCE 41 for ...
  • Strength and stiffness of metal building rod brace anchor connections 

    Foroughi, Hamid; Ji, Chengda; Schafer, Benjamin W.; Moen, Cristopher D. (2018-03)
    Rod or cable bracing is often provided in metal buildings to develop lateral resistance against wind or seismic loads in the ‘long’ direction of the building, i.e., in the direction perpendicular to the primary frames. ...
  • SDII Building Archetype Design v1.0 

    Torabian, S.; Eatherton, M. R.; Easterling, W. S.; Hajjar, J. F.; Schafer, B.W. (2017-07)
    Building archetypes are fundamental to exploring and demonstrating the seismic behavior of modern structures. No suitable archetypes or prototypes exist in the open literature that focus on steel deck diaphragms for ...
  • Steel Deck Diaphragm Test Database V1.0 

    O'Brien, Patrick; Eatherton, Matthew R.; Easterling, W. S.; Schafer, B.W.; Hajjar, J. F. (2017-07)
    From the 1950’s to the present, a substantial number of large-scale tests have been conducted on steel deck diaphragms or concrete on metal deck diaphragms. The data, papers and reports for these tests are located in ...
  • Characterizing the load-deformation behavior of steel deck diaphragms using past test data 

    O'Brien, P.; Eatherton, M. R.; Easterling, W. S. (2017-06)
    Recent research has identified that current code level seismic demands used for diaphragm design are considerably lower than demands in real structures during a seismic event. However, historical data has shown that steel ...
  • In-plane shear stiffness of bare steel deck through shell finite element models 

    Bian, G.; Schafer, B.W. (2017-06)
    The objective of this report is to explore the in-plane elastic shear stiffness of bare steel deck diaphragms through high fidelity shell finite element modeling. Profiled steel panels, i.e, metal deck, often serve as a ...
  • Direct Strength Prediction of Cold-Formed Steel Beam-Columns 

    Torabian, Shahabeddin; Zheng, Baofeng; Shifferaw, Yared; Schafer, Benjamin W. (2016)
    The Direct Strength Method (DSM) of cold-formed steel member design employs local, distortional, and global cross-section elastic buckling analysis with empirically derived “direct” expressions to predict member strength. ...
  • Simulation of cold-formed steel structures 

    Leng, Jiazhen (2015)
    Buildings framed from cold-formed steel members are becoming increasingly common. Simulation of cold-formed steel (CFS) structures in this dissertation includes seismic modeling and analysis of a two-story CFS-framed ...
  • Behavior of Full-Scale Cold-Formed Steel Buildings under Seismic Excitations 

    Peterman, Kara Danielle (2014)
    The experimental behavior of cold-formed steel (CFS) structures under seismic loads remains relatively unexplored. Modern design codes are based on member and sub- system level testing and have not been validated at the ...
  • Sheathing Braced Design of Wall Studs 

    Schafer, B.W. (2013)
    This report provides a summary document and final report for the multi-year project on Sheathing Braced Design of Wall Studs conducted at Johns Hopkins University. This project examined the axial behavior and axial + bending ...
  • Hysteretic shear response of fasteners connecting sheathing to cold-formed steel studs 

    Peterman, K.D.; Schafer, B.W. (2013)
    The series of experiments reported here aims to characterize the hysteretic behavior of the connection between cold-formed steel (CFS) studs and sheathing when subject to in- plane lateral demands. This connection provides ...
  • Test Report on Cold-Formed Steel Shear Walls 

    Liu, P.; Peterman, K.D.; Schafer, B.W. (2012)
    The objective of report is to detail recent cyclic tests on cold-formed steel (CFS) framed shear walls sheathed with Oriented Strand Board (OSB). The tests details are motivated from shear walls designed for a two-story ...
  • Moment-Rotation Characterization of Cold-Formed Steel Beams 

    Ayhan, D.; Schafer, B.W. (2012)
    The objective of this study is to provide a prediction method for characterizing the complete moment-rotation (M-!) response of cold-formed steel (CFS) members in bending. The work is an ancillary effort related to the ...
  • Fastener Spacing Study of Cold-Formed Steel Wall Studs Using Finite Strip and Finite Element Methods 

    Post, Brian (2012)
    This study aims to compare the finite element and finite strip methods as they are used to perform buckling analyses of cold-formed steel wall studs. Load-bearing cold-formed steel studs are becoming more common as a ...
  • Experiments on the Stability of Sheathed Cold-Formed Steel Studs Under Axial Load and Bending 

    Peterman, Kara D. (2012)
    This report provides test and analysis results for a typical cold-formed steel (CFS) stud as employed in light steel framing for a building. Specifically, tests are conducted on a 362S162-68 (50 ksi) stud connected to ...
  • CFS-NEES Building Structural Design Narrative 

    Madsen, R. L.; Nakata, N.; Schafer, B.W. (2011)
    The NSF sponsored CFS-NEES1 project R-CR: Enabling Performance-Based Seismic Design of Multi-Story Cold-Formed Steel Structures project was undertaken to study the behavior, particularly seismic behavior, of light-framed ...
  • Behavior and Design of Sheathed Cold-Formed Steel Stud Walls under Compression 

    Vieira, Luiz Carlos Marcos Junior (2011)
    Cold-formed steel may be used to frame the walls, floors, and roofs of modern buildings. The individual cold-formed steel members (studs) have sheathing attached to provide appropriate architectural enclosures. This sheathing ...
  • Inelastic Bending Capacity in Cold-Formed Steel Members 

    Shifferaw, Yared; Schafer, B.W. (2008)
    The enclosed research report has been prepared for the AISI as supporting material for proposed additions to the AISI Specification (AISI-S100-07) with respect to inelastic bending of cold- formed steel flexural members. ...

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