The typical structural plan drawings depict the building's foundation, floor plan, and roof plan. This Typical structural plan includes information such as the size and location of the structural elements found in the individual projects. Elevations depict a building's or structure's exterior walls. They mention architectural details such as surface finishes, partition walls, or mechanical systems. The structural drawings communicate to the building authority the design of the building's structure for review. Structural drawings are also included with the contract documents for proposed construction, and they guide contractors in detailing, fabricating, and installing structural components.