CFSRC Reports
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Enhancing Seismic Resiliency of Steel Buildings through Three-Dimensional Modeling of Diaphragm System Interaction with Braced Frame
(2021-03-29)The design objectives of early seismic codes were mainly achieved by using acceptable construction materials, and minimum levels of strength and stiffness largely derived based on roughly estimated demands. Early seismic ... -
Seismic Performance and Topology Optimization of Building Diaphragms
(2021)This dissertation investigates the seismic performance of steel deck diaphragms through the effects of rigid and flexible diaphragms on the seismic response, the diaphragm and wall interactions, and the improvements to the ... -
Stiffness of Concrete-Filled Steel Deck Diaphragms
(2022-01)In structural analysis of building structures, the in-plane stiffness diaphragms is needed so that lateral loads will be properly distributed to elements of the lateral-force resisting system. In US building codes, diaphragm ... -
Evaluation of Metal Building System Seismic Response Modification Coefficients
(2019-04)A seismic evaluation was conducted of common metal building configurations within the probabilistic framework defined in FEMA P695 “Quantification of Building Seismic Performance Parameters” with the goal of evaluating the ... -
Cantilever Testing of Concrete-Filled Steel Deck Composite Diaphragms Using Various Types of Steel Reinforcing
(2021-11)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 ... -
Seismic Behavior of Steel SCBF Buildings Including Consideration of Diaphragm Inelasticity
(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
(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
(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
(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
(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
(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
(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
(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
(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
(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
(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
(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
(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
(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
(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, ...
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