Structural steel is a material used for steel construction, that is created with a selected form following sure standards of chemical composition and strength. They are even outlined as hot rolled merchandise, with a cross section of special type like angles, channels and beams/joints. Steel has been thoroughly employed in numerous constructions everywhere in the planet attributable to its numerous specific characteristics that are significantly ideally fitted to construction. Steel is sturdy and may be shaped to provide the required form to provide associate degree final look to the structure that has been made Steel Beams is taken into account to be a structural component that chiefly carries load in flexure that means bending. Typically beams carry vertical gravitation, however are capable of carrying horizontal hundreds usually within the case of associate degree earthquake. The mechanism of carrying load in a very beam is incredibly distinctive, like; the load carried by a beam is transferred to walls, columns or girders that successively transfer the force to the adjacent structural compression members. The joints rest on the beam in lightweight frame constructions. The beams are acknowledged by their profile meaning:
• The length of the beam
• the form of the cross section
• the fabric used the foremost
.Such beams are unremarkable employed in the development of bridges and steel frame buildings. The foremost un-remarkably found varieties of steel beams are varied and are as follows • Wide projection beams • power unit form beams. Typical characteristics of beams are: Beams expertise tensile, sheer and compressive stresses internally. Usually underneath gravity, there’s a small reduction within the original length of the beam. This ends up in a smaller radius arc enclosure at the highest of the beam therefore showing compression. Whereas identical beam at all-time low is slightly stretched envelopment a bigger radius arc thanks to tension. The length of the beam midway and at the bends is that the same because it isn’t underneath tension or compression and is outlined because the neutral axis. The beam is totally exposed to shear stress higher than the support. There are some concrete beams that are fully underneath compression, these beams are known as pre-stressed concrete beams and are inbuilt such a way to provide a compression over the expected tension underneath loading conditions. The pre-stressed concrete steel beams have the producing method like, initial the high strength structural steel designing course in kerala tendons are stretched so the beam is forged over them. Then because the concrete begins to cure, the tendons are free therefore the beam is instantly underneath eccentric axial hundreds. An indoor moment is formed due to the eccentric axial load that successively increases the instant carrying capability of the beam. Such beams are usually employed in road and bridges. Materials employed in today’s trendy construction are the beams that are usually created of materials like: Steel, Wood, concrete. There are different types of beams: Simply supported beam,Cantilever beam,continuous beam,fixed beam and overhanging beam.
Simply supported beams
Simply supported beams are the most simple type of beams and have two supports at either end i.e.,pinned and roller. This considered to be a common type of beam and can be solved by using equilibrium equations.
Cantilever Beams use a fixed support that provides support from one end. This support provides moment resistance that is required for the beam to remain static. Pinned or roller support cannot provide the restraint that the beam would need. An example of a cantilever beam, is a shop awning – in which the beam is bolted directly into the wall.
Continuous beams are defined as multi-spanned beams having multiple supports across the length of the beam. A single beam that is supported by a number of columns along its length is a very good example of a continuous beam. It is considered to be an indeterminate beam – as there are more unknowns than equilibrium equations available.
Overhanging beams consists of two supports, but when compared to the simply supported beams, one of the supports is not at the end of the member. An example of this is of a balcony which is being extended from a frame structure. The frame provides two supports, but no support exists at the end of the member – allowing it to ‘overhang’ .