A truss is a structural framework made up of triangular units that work together to support loads. It is commonly used in buildings, bridges, and roofs to provide stability and strength while minimizing the amount of material needed. The triangular shape is key, as it distributes weight evenly and prevents deformation under pressure. Trusses can be constructed from various materials, including wood, steel, and aluminum. Different types of trusses, such as the King Post and Queen Post trusses, are designed for specific applications and load requirements. Their efficient design makes trusses a popular choice in modern engineering and architecture.