Formwork is a temporary structure used in construction to shape and support concrete until it hardens. It acts like a mold, holding the wet concrete in place while it cures, ensuring that it takes the desired shape. Formwork can be made from various materials, including wood, metal, or plastic, depending on the project requirements. Once the concrete has set and gained sufficient strength, the formwork is removed, leaving behind a solid structure. This process is crucial for building elements like walls, columns, and slabs in structures such as buildings and bridges. Properly designed formwork helps ensure the quality and safety of the final construction.