In order to build a high level integrated CAD system with the manpower saving feature, a novel Multimedia Simulation based architecture structural CAD system model (MSCAD) was put forward.
According to the general approach on metro route profile design, it is founded that the architecture of the CAD software system of metro route profile which guide the MRPCAD system development.
根据地铁线路纵断面设计的一般步骤，建立了纵断面辅助设计软件的系统结构，指导MRPCAD的开发研制。
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This paper discusses the necessity of applying Database System to Bridge CAD. The constitution and system architecture of bridge CAD based on core database system has been studied.