A king post truss is a structural framework commonly used in building roofs and bridges. It consists of two sloping beams, called rafters, that meet at a peak and are supported by a vertical post in the center, known as the king post. This design helps distribute weight evenly and provides stability, making it a popular choice in construction. The king post truss is efficient for spanning short to medium distances, typically up to 30 feet. It is often made from materials like wood or steel, and its simple design allows for easy assembly and cost-effectiveness in various architectural projects.