The Technology of Generating the Inner, Outer and Hanging Wall Surfaces in Housing CAD Systems

The technology of generating the Inner, Outer and Hanging Wall Surfaces in a Housing CAD System is presented in this paper. The relations between the positions of the inner wall and outer wall surfaces, between doors and windows and, between the wall surface and doors and windows are discussed. The method to keep consistency of a house structure according to the positions mentioned is also presented. In addition, the technology of generating arch hanging wall surfaces is disussed in detail.