Seismic design provisions for use with steel sheathed cold-formed steel framed shear walls have been proposed for inclusion in the National Building Code of Canada with the associated detailing and design procedures found in the AISI S213 North American Lateral Design Standard for cold-formed steel structures. The design procedure, including recommended seismic force modification factors (R-values), was based on the results of an extensive series of monotonic, reversed cyclic and dynamic tests, as well as non-linear time history dynamic analyses of representative building structures. An approach adopted from the FEMA P695 incremental dynamic analysis procedure is being used to evaluate and improve the seismic design procedure. An overview of the process followed in the conception of the seismic design provisions is provided in this paper.
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