eCAADe 26 617 - Section 15: Digital Applications in Construction Spatial Information Visualization Methods for Large Scale Infrastructure Projects Katherine A. Liapi University of Patras, Greece kliapi@upatras.gr Abstract. For the communication of spatial information with regard to the design and construction of large scale urban infrastructure projects several visualization methods and technologies have been developed. The paper discusses two different trends in relevant technologies: a) those that use visualization to facilitate communication of construction planning information between architects, engineers, contractors, the public and other interested parties, and b) technologies that provide real time information on the conditions on the construction site. Keywords: spatial information visualization; real time construction site modeling; construction schedule visualization; motion modeling & vualization. Introduction In large scale urban infrastructure projects construc- tion activities often interfere with the regular rhythms of the life in the city. Mobility and safety challenges are the most common disruptions of the daily rou- tine. Strategies to minimize such impacts are nu- merous; in almost all instances the fast completion of a project is imperative, while trafc measures to reduce problems with local access to nearby neigh- bourhoods and businesses is also a standard tactic. A common challenge for the implementation of any of these measures is the communication of spatial information between all interested parties including architects, engineers, project managers, contractors etc.; the dissemination of relevant information to the afected public is an additional challenge. Large urban infrastructure projects, such as highway interchange projects, are often character- ized by complex and continuously changing geo- metric confgurations which complicate the overall project management and afect trafc planning decisions. The communication of spatial informa- tion between all interested parties then becomes a potential drawback for the timely completion of the projects and for the city to recuperrate its normal rhythms. In addition, the fast changing conditions on the site where the construction happens become a potential hazard not only for the construction per- sonel but also for the walking citizens and the ve- hicles in the area. For the communication of spatial information with regard to the design and construction of large scale urban infrastructure projects several visualiza- tion methods and technologies have been devel- oped. The paper discusses two diferent trends in