2019 CSCE Annual Conference - Laval (Greater Montreal)

2019 CSCE Annual Conference - Laval (Greater Montreal) Conference


Mr. Charles Igwe, Concordia University (Presenter)
Dr. Amin Hammad
Dr. Fuzhan Nasiri, Concordia University

Transportation developments are shifting from the construction of new highways to the reconstruction of existing ones. The reconstruction of elevated urban highways requires the use of heavy construction equipment, and therefore, planning the equipment workspace becomes very important to ensure that there are no delays to the project completion arising from spatio-temporal conflicts. A number of studies with different perspectives have been carried out to describe the gains of using 4D models in workspace management. However, none of them has considered the effects of the limited usable space in the reconstruction of elevated urban highways. Moreover, the requirements for multiple levels of detail (LOD) in scheduling large and complex projects present a new challenge. To counter these challenges, considerable amount of time is required to ensure that the LOD of the plan is sufficient to account for the following: (1) micro-scheduling of heavy equipment typically used in these type of operations, (2) and (2) producing a 4D model with a sufficient LOD to accommodate daily work plans. The purpose of this paper is to present a research initiative that involves the development of a detailed model for equipment workspace planning by integrating the last planner system with a 4D model with multiple LOD. The development of this 4D model can help detect and resolve spatiotemporal conflicts, reduce the time waste associated with urban highway projects subject to space constraints, improve the reliability of the planning process and increase safety on construction sites. The research method is described, and a case study is developed to demonstrate the feasibility of the proposed method