You may find the following books useful to refer to if you need information on the methods used to check members in Steel Designer.

•   Cold-formed Steel Design, Wei-Wen Yu, John Wiley & Sons, Inc., New York, 2000, 3rd Edition

•   Design of Cold-formed Steel Structures to the AISI Specification, Gregory J. Handcock, Thomas M. Murray and Duane S. Ellifritt, Marcel Dekker, Inc., New York, 2001

•   Design of Cold-formed Steel Members, J. Rhodes, Department of Mechanical Engineering, University of Strathclyde, Glasgow, UK, 1991

•   Steel Designers Handbook, B.Gorenc, R. Tinyou and A. Syam, UNSW Press, Sydney, 1996, 6th Edition

•   The Behaviour and Design of Steel Structures, N S Trahair and M A Bradford, Chapman and Hall, London, 1988