There are two main types of technical drawings: plans and blueprints. A plan (also called a floor plan, remodeling plan, or room plan) is a scaled drawing of a particular building, home, or room. They can also include doors, windows, as well as other major fixtures or appliances. And they can be used to determine the square footage of an area or act as a guide during the design process. Blueprints are more detailed plans of a specific remodeling or construction project, which got its name from the process that was used to duplicate these documents.