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A beam is a long, slender structural element that is primarily designed to resist and support loads applied perpendicular to its axis. Beams can be made of various materials such as wood, steel, or reinforced concrete. They are an integral part of buildings, bridges, and other structures, where they bear the weight and transfer it to the supporting elements like columns or walls.

There are various types of beams depending on how they are supported, their geometry, and how the loads are applied to it. The most common types are: 1. Simply Supported Beam: A simply supported beam is supported at its two ends, usually on pins or rollers. The support allows for rotation, but not horizontal or vertical movements. \(\includegraphics{./attachments/11.JPG}\) 2. Cantilever Beam: A cantilever beam is a beam that is fixed at one end and free at the other end. It supported all along its length without any other external support. \(\includegraphics{./attachments/21.JPG}\) 3. Overhanging Beam: An overhanging beam is a beam that extends beyond its support. It is a combination of a simply supported beam and a cantilever beam. \(\includegraphics{./attachments/31.JPG}\) 4. Fixed Beam: A fixed beam is a beam that is fixed, or "built-in" at both ends, preventing any rotation or movement at the supports. \(\includegraphics{./attachments/41.JPG}\) 5. Continuous Beam: A continuous beam is a beam that extends over more than two supports. They are commonly used in structures like bridges. \(\includegraphics{./attachments/51.JPG}\)