Parametric study of laterally supported and unsupported steel beam

Abstract

Steel as a building material has been used extensively in various type of structure some of the examples of civil engineering works in steel are high-rise building skeletons, industrial buildings, transmission tower, railway bridges, overhead tanks, chimneys, bunkers and silos. Since these sections often show that the web resists shear forces, while the flanges resist most of the bending moments experienced by the beam. Mainly while considering the designing of both beams, the design procedure is different and it is observed that the selection of the beams depends upon the intensity of the loads, length of the beam and economy. As per structure requirement, as an engineer we have to select any one of these two that is either laterally supported or laterally unsupported beam. So our aim is narrowed towards the comparative study of the behavior of these two beams on various combination of the loading and accordingly the cost of the beam on stability criterion as per IS code 800:2007. Provision of IS 800:2007 for strength determination of laterally restrained as well as unrestrained beam, which are symmetrical about at least one axis are expressed. We are trying to predict the size of the section on the basis of the amount of loading and for that purpose we will generate an equation which can help designer and engineer to select the suitable beam.