Cold Formed Steel Structures

Cold Formed Steel Structures - 49 Cold Formed Steel...

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© 2003 by CRC Press LLC 49 Cold Formed Steel Structures 49.1 Introduction to Cold-Formed Steel Sections Manufacturing Methods • Applications of Cold-Formed Steel • Advantages of Cold-Formed Steel • Design Codes and Specifications 49.2 Local Buckling of Plate Elements Local Buckling of Plates • Classification of Elements • Stiffened Elements • Unstiffened Elements • Stiffeners • Distorsional Buckling 49.3 Members Subject to Bending Bending of Unsymmetrical Cross Sections • Laterally Stable Beams • Effective Width of Compression Elements • Plastic Bending Capacity • Web Crushing • Shear in Webs • Combined Effects • Lateral Buckling 49.4 Members Subject to Axial Load Short Struts • Flexural Buckling • Torsional Flexural Buckling • Members under Combined Bending and Compression • Members under Combined Bending and Tension 49.5 Connections for Cold-Formed Steelwork Types of Fastener • Assemblies of Fasteners 49.6 Sheeting and Decking Profiles for Roof Sheeting • Profiles for Roof Decking • Wall Coverings • Composite Panels 49.7 Storage Racking Components • Design Codes of Practice 49.1 Introduction to Cold-Formed Steel Sections Cold-formed steel products find extensive application in modern construction in both low-rise and high- rise steel buildings. Primary as well as secondary framing members in low-rise construction are fabricated using cold-formed steel sections, while in tall buildings, roof and floor decks, steel joists, wall panels, door and window frames, and sandwich panel partitions built out of cold-formed steel sections have been successfully used. In addition, these products are used in car bodies, railway coaches, storage racks, grain bins, highway products, and transmission towers. Although the uses of these products are many and varied, a multiplicity of widely different products, with a tremendous diversity of shapes, sizes, and applications, are produced in steel using the cold-forming process. This chapter is primarily concerned with the design of cold-formed steel members for use in building construction. However, the general design philosophies developed in the chapter are applicable in many cases over a wide range of other uses. More detailed information on cold-formed steel structures are available in books by Yu (1991), Rhodes (1991), and Hancock (1988). J. Rhodes University of Strathclyde N.E. Shanmugam National University of Singapore
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Manufacturing Methods Cold forming is the term used to describe the manufacture of products by forming material in the cold state from a strip or sheet of uniform thickness. There is a variety of different methods of forming used for cold-formed products in general, but in the case of structural sections, the main methods used are folding, press-braking, and rolling.
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Cold Formed Steel Structures - 49 Cold Formed Steel...

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