TABLE OF CONTENTS Roger L. Brockenbrough, P.E.
President
R. L. Brockenbrough & Associates, Inc.
Pittsburgh, Pennsylvania
R. A. LaBoube, Ph.D., P.E.
Distinguished Teaching Professor
Department of Civil Engineering
University of Missouri
Rolla, Missouri
This chapter presents information on the design of structural members that are cold-formed to cross-section shape from sheet steels. Cold-formed steel members include such products as purlins and girts for the construction of metal buildings, studs and joists for light commercial and residential construction, supports for curtain wall systems, formed deck for the construction of floors and roofs, standing seam roof systems, and a myriad of other products. These products have enjoyed significant growth in recent years and are frequently utilized in some shape or form in many projects today. Attributes such as strength, light weight, versatility, noncombustibility, and ease of production make them cost-effective in many applications. Figure 9.1 shows cross sections of typical products.
Cold-formed members for most applications are designed in accordance with the North American Specification for the Design of Cold-Formed Steel Structural Members, 2001, a consensus document used throughout Canada, Mexico, and the United States. In the United States it is published by the American Iron and Steel Institute, Washington, D.C., and referred to herein as the AISI North American Specification ( AISI NAS). (See also Supplement No. 1, 2004.) In Canada the document is published by the Canadian Standards Association as Standard S136. The technical design...
