professor ben schafer's thin-walled structures research group - johns hopkins university

 

Sheathing Braced Design of Wall Studs

 

Note: The research reported on this page is from a project sponsored by the American Iron and Steel Institute - Committee on Framing Standards. The project initiated in the Fall of 2006 and the project completed in Winter 2012.

 

Overview

This research developed a design methodology for light-frame cold-formed steel wall systems that properly accounts for the behavior of wall studs sheathed by similar, dissimilar, and one-sided sheathing. The work was largely split between axially loaded walls, and walls loaded with axial laod and bending. Complete details are provided in the materials referenced below.

 

Project Materials

 

Final Report

- Schafer, B.W. (2013). "Final Report: Sheathing Braced Design of Wall Studs." Johns Hopkins University, prepared for the American Iron and Steel Institute, Washington DC.

 

Comprehensive project summary documents

- Vieira Jr., L.C.M. (2011) Behavior and design of cold-formed steel stud walls under axial compression, Department of Civil Engineering, Ph.D. Dissertation, Johns Hopkins University.

              supplement: summary movie on testing (note 58MB .wmv file)

- Peterman, K.D.P. (2012) Experiments on the stability of sheathed cold-formed steel stud under axial load and bending, M.S. Essay, Department of Civil Engineering, Johns Hopkins University.

 

 

Supplemental Materials: Journal articles

Submitted

***Peterman, K.D., Schafer, B.W. “Sheathed Cold-Formed Steel Studs Under Axial and Lateral Load.” Submitted to Journal of Structural Engineering (Submitted 2 January 2013).

Published/In Press

***Vieira Jr., L.C.M., Schafer, B.W. (2013). “Behavior and Design of Sheathed Cold-Formed Steel Stud Walls under Compression.” ASCE, Journal of Structural Engineering (DOI: 10.1061/(ASCE)ST.1943-541X.0000731). In Press

Vieira Jr., L.C.M., Schafer, B.W. (2012). “On the design methods of cold-formed steel wall studs by the AISI specification.” Revista da Estrutura de Aço. 1 (2) 79-94.

Vieira Jr., L. C. M., Schafer, B.W. (2012). “Lateral Stiffness and Strength of Sheathing Braced Cold-Formed Steel Stud Walls.” Elsevier, Engineering Structures. 37, 205–213 (doi:10.1016/j.engstruct.2011.12.029)

Vieira Jr., L. C. M., Shifferaw, Y., Schafer, B.W. (2011) “Experiments on Sheathed Cold-Formed Steel Studs in Compression.” Elsevier, Journal of Constructional Steel Research. 67 (10) 1554-1566 (doi:10.1016/j.jcsr.2011.03.029).

*** draft version included in project final report.

 

 

Sponsor Progress Presentations and Reports

- April 2008 AISI-COFS Design Methods Committee (pdf) (presentation)

- October 2008 AISI-COFS Field trip (link) (notes/handout) summary report (pdf)

- April 2009 AISI-COFS Design Methods Committee (pdf)

- August 2009 AISI-COS/COFS Combined research report (ppt) (pdf)

- February 2010 AISI-COFS Design Methods Committee (pdf)

- July 2010 AISI-COFS Design Methods Committee (ppt)

- February 2011 AISI-COFS Design Methods Committee (pdf)

- July 2011 AISI-COFS Design Methods Committee (pdf)

- February 2012 AISI-COFS Design Methods Committee (pdf)

 

 

Background: RFP and Proposal

- AISI-COFS Request for Proposals (pdf)

- Proposal (pdf)

- Proposal addendum (pdf)

 

 

Supplemental Materials: MDOF Testing Rig

- 2008 Structural drawings of MDOF testing frame (pdf)

- 2008 3D model of structural testing frame (pdf)

- 2011 Updated 3D model of testing rig (pdf1-pdf2)

 

Supplemental Materials: Ancillary student work not captured in comprehensive summaries

- Iuorio, O., Schafer, B.W. (2008). "FE Modeling of Elastic Buckling of Stud Walls." Supplemental report to AISI-COFS Design Methods Subcommittee, September 2008 (pdf)

- Blum et al. (2011). "A few thoughs on bracing and accumulation." Supplemental report to AISI-COFS Design Methods Subcommittee, February 2011(pdf)

- Post, B. (2012). “Fastener Spacing Study of Cold-Formed Steel Wall Studs Using Finite Strip and Finite Element Methods.” Research Report, December 2012. (pdf)

 

 

Supplemental Materials: Conference papers

- Peterman, K.D., Schafer, B.W. (2012). “Stability of sheathed cold-formed steel studs under axial load and bending.” Proc. of the Structural Stability Research Council - Annual Stability Conference, 18-21 April, Grapevine, TX. 19pp.

- Vieira Jr., L.C.M., Schafer, B.W. (2010) “Behavior and Design of Axially Compressed Sheathed Wall Studs.” Proceedings of the 20th Int’l. Spec. Conf. on Cold-Formed Steel Structures, St. Louis, MO. November, 2010. 475-492.(pdf)

- Vieira Jr., L.C.M., Schafer, B.W. (2010). “Bracing Stiffness and Strength in Sheathed Cold-Formed Steel Stud Walls.” Proceedings SDSS’Rio 2010 STABILITY AND DUCTILITY OF STEEL STRUCTURES, E. Batista, P. Vellasco, L. de Lima (Eds.), Rio de Janeiro, Brazil, September 8 - 10, 2010. 1069-1076. (pdf)

- Shifferaw, Y., Vieira Jr., L.C.M., Schafer, B.W. (2010). “Compression testing of cold-formed steel columns with different sheathing configurations.” Proceedings of the Structural Stability Research Council - Annual Stability Conference, Orlando, FL. 593-612. (pdf)

- Vieira Jr., L.C.M., Schafer, B.W. (2010). “Full-scale testing of sheathed cold-formed steel wall stud systems in axial compression.” Proceedings of the Structural Stability Research Council - Annual Stability Conference, Orlando, FL. 533-552. (pdf)

 

 

last updated 4 February 2013

 

 

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