Schifflerized Angle Struts

Schifflerized angles (90-degrees hot-rolled equal leg angles bent to 60-degrees) are employed as main leg members in triangular-base latticed communication structures. The strength of these angles is quite different from that of regular 90-degrees angles. Results of experimental investigation on schifflerized angles are presented. The test results are compared with the loads computed according to ASCE Manual No. 52 and American Institute of Steel Construction load and resistance factor design specifications. The ambiguity regarding the proper selection of the width to be used in the calculation of width-thickness ratios is discussed, and recommendations are made. The susceptibility of these angles of torsional-flexural buckling is highlighted, and design recommendations are given. In addition, a table for design compressive strength of these angles that can serve as a ready-to-use design aid is provided.