A truss is a structural framework made up of triangular units that work together to support loads. These triangular shapes are strong and efficient, allowing trusses to span large distances without needing many materials. You can often see trusses in bridges, roofs, and towers, where they help distribute weight evenly. Trusses are designed to handle various forces, such as tension and compression, making them ideal for construction. For example, in a roof truss, the triangular design helps support the weight of the roof while allowing for open spaces below. This makes trusses a popular choice in both residential and commercial buildings.