Structural steel and steel beams
Structural steel is an important structural material that consist of three main shapes:
Each shape has a unique cross section, different mechanical properties and specific way to measure it. In this article let’s have a closer look at the beam.
How to classify beams?
Because of their shape of cross section, structural beams are commonly referred to as I-beams or H-beams, but beams can be classified into many types based on criteria like mentioned geometry, but as well criteria such as equilibrium conditions or type of support.
What is a common application for beams?
In construction beams are typically used for structural support. Due to their resistance to vertical loads, bending moments and shear forces beams are made for this task. It is the result of their structure, as they consist of two flanges, which are the flat horizontal sections of the beam and the web, which is the vertical portion connection, the two flanges. Beams also have a fillet, which is the curved angle where the web connects with the flange. The web provides resistance to shear forces like breaking or collapsing, while the flange resist bending movements.
I-beam is the most efficient shape for making beam as strong as possible while using as little material as possible. In conclusion it is called I- beam, beacuse in its cross section looks like I uppercase.