Personal History of 4D Modeling •1984: first work with 3D models •1987: saw first 4D model at Bechtel •1988: built 3D building information modeler •1993: built first 4D model •1996: prototyped VR interface for 4D modeling •1996: started research on automating 4D modeling •1998: developed easy-to-learn 4D modeling tool (now Common Point Project 4D) •1998: started research on computer-based analysis of schedules with 4D models •1999: started research on multi-screen group interaction with 4D models •2005: started research to extend 4D modeling beyond construction •To date: helped deploy 4D models in many project phases on 40+ small and large projects totaling $5B+
Visualize the construction of this schedule How much of the steel structure is erected when the air handler unit (AHU) arrives? Who else is working near the mechanical contractor when the AHU is installed? Where should the AHU be unloaded and how should it be moved to its final position? Where will the steel contractor have the cranes when the AHU is installed?
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