CAD Guru Jonathan Pickup is delivering another amazing tutorial on . Floors and Slabs can be used to create horizontal objects. But when should you use a floor and when should you use a slab? In this webinar you will hear about these objects and learn when to use one or the other. Floors are useful for creating horizontal planes (floors, patios, steps,etc.). Slabs are more complex, allowing you to create components and complex floors that include finish, structure, ceilings, and drainage. You will also learn about columns and pilasters. Columns can be used to create vertical elements, they can be saved in your library and even used to create retaining walls.