With the increasing demand of rail transit construction, coupled with its complexity and appearance of new technologies, an integrated system is needed to provide the stakeholders a convenient way to exchange information effectively and efficiently. This paper, from the angle of information, proposes using multi-dimensional (nD) modeling technology to develop an integrated system for participants and decision-making support for project owners in construction period. In this research, nD system is realized by corresponding 3D models to visual working units which have a direct relationship with Work Breakdown Structures (WBS) and other construction code structures so that the system can integrate different information in the same 3D model. In view of large amount of information and dynamic characteristics of construction work, using nD system to integrate the latest information on all aspects can be a convenient way to get access to necessary information and help the owners in making decisions comprehensively. © 2011 Elsevier B.V. All Rights Reserved.
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