A cantilever beam is a structural element that is fixed at one end and free at the other. This design allows it to support loads along its length while extending beyond its support without additional bracing. Common materials used for cantilever beams include steel, concrete, and wood. Cantilever beams are widely used in construction, such as in bridges, balconies, and overhangs. Their ability to carry loads while projecting into space makes them ideal for various architectural applications. Proper design and analysis are essential to ensure they can withstand the forces acting upon them without failing.