Biaxial Bending of Steel Angle Section

Structural steel angles have a wide variety of application. However; steel angles have not received the attention comparable to heavy shapes such as wide flange sections. For steel angles flexural buckling strength is the basic design strength, while the torsional flexural buckling strength is computed in many codes by modifying the design procedure for flexural buckling strength. Generally single steel angle sections are not used as steel beam to support loads over it. In some cases when single angle steel sections are used as beams to support distributed loads which cause biaxial bending and torsion. The behavior of steel angles may be extremely complicated and the accurate prediction about their strength is very difficult. Many design codes do not have any design rules of torsion. Some recommendations are of limited applications or fail to consider some effect which is thought to be important. Present paper will be based on the biaxial bending of single steel angle section and twisting of angle section.