Modular and prefabricated units continue to be important in building design and construction. Explore how to use AutoCAD to create a prefab unit, starting with a simple 2D plan drawing that can be inserted into an overall 3D construction model such as a high rise building or office block. See how to use 2D drafting to lay out the basic plan of your unit, then create a 3D workspace to solidify the design. Using 3D modeling, discover how to add 3D walls and structural openings at appropriate levels in the unit design, add a floor and ceiling, and then complete the prefabricated unit that could be built offsite and craned in to a larger project.