To reduce the repeated work by avoiding from spawning redundant data for reduplicate design in building engineering, a five-layer data model is introduced to reorganize the design information.

• 摘要为了减少建筑工程单一项目内的设计信息的冗余数据，进而减少设计中的重复工作量，提出了“五层树状模型”来重组信息。