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Frames and trusses provide the structural backbone of buildings, bridges, and other massive structures. They form the framework that holds everything together, providing strength and support to withstand various loads and stresses. A frame typically consists of a vertical column called a post or pier, which supports horizontal beams known as joists. These joists are usually spaced evenly apart, creating a grid-like pattern. Trusses, on the other hand, are pre-fabricated assemblies of wooden or metal members that are designed to work together in harmony. They are often used in roof construction, where their triangular shape provides excellent stability and resistance against strong winds and heavy snowfall. By combining frames and trusses, engineers can create complex structures that are both aesthetically pleasing and remarkably durable.