No longer will men and women toil in sweat and dirt framing a house, welding beams and columns together for an industrial building, or applying gypsum board to the walls of a commercial office. Instead, buildings will be designed in computer programs and printed using huge 3-dimensional (3D) printers. Not only would individual building components be printed, but entire wall, floor, roof, and plumbing systems could be extruded in the exact design of the architect, using advanced materials, which will be discussed