Recent Submissions

  • Seismic Behavior of Steel SCBF Buildings Including Consideration of Diaphragm Inelasticity 

    Foroughi, H.; Wei, G.; Torabian, S.; Eatherton, M.R.; Schafer, B.W. (2021-04)
    This report provides a summary of nonlinear response history analyses conducted on a three- dimensional model of a series of steel buildings with special concentric braced frames (SCBFs). The models are conducted in OpenSees ...
  • CFS Bracing Design Using Combinations of Discrete and Sheathing Bracing 

    Schafer, B.W. (2020-08)
    The objective of this report is to summarize efforts related to establishing the behavior and design of cold-formed steel wall assemblies potentially braced by discrete steel bracing and wall sheathing. Cold-formed steel ...
  • Test Report: Cyclic Performance of Steel Sheet Connections for CFS Steel Sheet Shear Walls 

    Zhang, Z.; Schafer, B.W. (2020-07-30)
    The objective of this report is to provide fastener-level force-deformation response appropriate for cold-formed steel (CFS) framed steel sheet sheathed shear walls under cyclic loads. A key feature of the fastened connection ...
  • Cyclic performance and characterization of steel deck connections 

    Torabian, S.; Schafer, B.W. (NBM Technologies, 2017-12-14)
    The objective of this report is to provide cyclic connection test results essential to 3D building models required for performing P695 evaluation studies for Rigid Wall-Flexible Diaphragm (RWFD) Buildings. This experimental ...
  • Design of Metal Building Roof Purlins Including System Reliability Effects 

    Torabian, S.; Schafer, B.W. (2020-06)
    This report provides a framework to incorporate structural system reliability effects in the design of roof purlins in a typical metal building. Today every roof purlin is considered as a separate component and the effect ...
  • Experiments, Analysis, and Design of Built-Up Cold-Formed Steel Columns 

    Fratamico, D.C. (Ph.D. Thesis / Johns Hopkins, 2017-08-01)
    The buckling and collapse behavior of built-up, cold-formed steel (CFS) columns are investigated in this thesis through a series of experimental and numerical analyses for the development of suitable design approaches. ...
  • Pull-through Tests on OSB and Gypsum Board 

    Vieira, L.V.; Sampson, I.; Van Doren, M. (2012)
    The objective of this report is to provide pull-through stiffness and capacity for common fasteners used in cold-formed steel attached to oriented strand board or gypsum. A total of 35 tests were conducted at dry, humid, ...
  • Seismic Behavior of Steel BRBF Buildings Including Consideration of Diaphragm Inelasticity 

    Wei, G.; Eatherton, M.R.; Foroughi, H.; Torabian, S.; Schafer, B.W. (2020-03, r)
    Compared to vertical elements of a building’s seismic force resisting systems, our understanding of the horizontal elements, i.e. the diaphragms, is grossly lacking. Recent research showed that diaphragm design forces that ...
  • Computational Shear Wall Design Utilizing Fastener Testing 

    Edgin, E; Schafer, B.W.; Madsen, R.L. (2018-07)
    The objective of this project is to provide results that the AISI-COFS Lateral committee needs for evaluating the use of a computational (analysis-based) alternative for the prediction of shear wall capacity of CFS-framed ...
  • Cold-Formed Steel Gravity Walls with Bridging and/or Sheathing 

    Qian, B.; Schafer, B.W. (2020-01)
    The objective of this report is describe experiments conducted on cold-formed steel walls under axial loading with a variety of different bracing conditions. Cold-formed steel wall systems are commonly braced using small ...
  • Experimental Study on the in-plane behavior of standing seam roof assembly and its use in lateral bracing of rafters 

    Wei, G.; Schafer, B.W.; Seek, M.; Eatherton, M.R. (2020-01)
    The standing seam roof (SSR) system is the most commonly used roof system for metal buildings due to its superior durability, water tightness, and energy efficiency. In this type of system, SSR panels attach to Z-shaped ...
  • Inelastic Lateral-Torsional Buckling Strength Validation for Non-Principal Axis Bending Using Numerical Methods 

    Wang, S; Glauz, R.S.; Schafer, B.W. (2020)
    The current design specification for point-symmetric cold-formed steel members in North America (AISI S100) has long applied a conservative simplification for elastic lateral-torsional buckling. This report aims to provide ...
  • SDII Building Archetype Design v2.0 

    Torabian, S; Eatherton, M.R.; Easterling, W.S.; Hajjar, J.F.; Schafer, B.W. (2019-12-16)
    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 ...
  • 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 ...

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