Comparative study on welded I beam and hot rolled steel beam

Abstract

Steel, as a building, material, has been used extensively in various types of structures. Some of the examples of civil engineering works in steel are high-rise building skeletons, industrial buildings, transmission towers, railway bridges, overhead tanks, chimneys (stacks), bunkers and silos. Steel Beams are widely used in steel construction for relatively all beams. Steel beams are often used in steel buildings and providing economical solutions in cases of large and heavy loads or in other words steel beams varies in its length under various loading conditions. The usual method of selecting a beam is based upon section modulus. Since these sections often shows that the web resists shear forces, while the flanges resist most of the bending moment experienced by the beam. Beam theory shows that the I-shaped section is a very efficient form for carrying both bending and shear loads in the plane of the web. The only real difference between welded and hot rolled beam design is that, since the designer has greater control over the dimensions of the section and may make the web thinner in proportion to its depth than in any of the rolled shapes, web buckling may be of greater concern. Mainly while considering designing of both beams the design procedure is different and it’s observed that the selection of the beams depends upon the intensity of loads, length of the beams and economy. As per structure requirement as engineer we have to select any one of these two i.e. either welded or hot rolled beams. So our aim is narrowed towards the study of behaviour of these two beams on various combinations of loading and length and accordingly the cost of the beams on stability criterion as per IS 800:2007. Also we will try to predict length of beams on the basis of amount of loading and for that purpose we will generate equations which can help designer and engineer to select a suitable beam.