This paper describes the 3D Architectural Design Software Support System Platform.This platform goes beyond traditional CAD graphics technology based on geometrical primitives.It constructs building models of parametric building members following the logic of architectural design, generates plans, elevations, sections and real-time 3D view by computer analysis, and then implements automatic/manual drawing arrangement, image rendering and animation base on former results.

The paper discussed the collaborative design standard based on Industry Foundation Class (IFC). It was found that the collaborative design standard should be based on an open industrial standard instead of any private standard. IFC is the available open standard for the building industry. However the IFC open data standard is a necessary condition for the collaborative design standard but not a sufficient condition. It was pointed out in the paper that the process of the collaborative design need also clearly defined in the standard. The paper also introduced the Information Delivery Manual, a use case based methodology to analyze the design process, and Model View Definition, a programmer view of the data exchange within the process. This article points out, based on the IFC data standard framework, the collaborative design standard should include three aspect, namely, IFC data structure, information delivery manual, and model view definition.

This paper introduces a new modularization design system which is based on BIM technology.It is researched specially for rural house considering of the features of different styles and the architects' level on CAD.It shows four main features:1) rich design template; 2) detail information database; 3) intelligent design adjustment; 4) unique object library.