Experiments on Rotational Restraint of Sheathing
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Date
2007
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Abstract
A series of cantilever tests on joist-sheathing assemblies were conducted to determine the rotational restraint that sheathing provides to the compression flange of a floor joist in bending. This rotational restraint, which is characterized by the stiffness k?, can partially or fully retard distortional buckling. Distortional buckling is a mode of instability in which the flange undergoes rotation about the flange/web juncture of a member and the web locally bends. This mode of buckling has recently been recognized as a separate strength limit state in the North American Specification and design rules for its prediction adopted.
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Keywords
Cold-formed steel, purlin, joist, rotational restraint, distortional buckling, sheathing
Citation
Schafer, B.W., Sangree, R.H., Guan, Y. (2007). "Experiments on Rotational Restraint of Sheathing." Final Report to the American Iron and Steel Institute