Truss design involves creating a structural framework made up of triangular units. These units distribute loads efficiently, making trusses ideal for bridges, roofs, and towers. The triangular shape provides stability and strength, allowing structures to span large distances without excessive material. Engineers use various materials, such as wood, steel, or aluminum, to construct trusses. The design process includes analyzing forces and selecting appropriate shapes and sizes to ensure safety and durability. Common types of trusses include the Pratt truss, Warren truss, and Howe truss, each suited for different applications and load conditions.