The factory-based "modular" construction process has proven to increase the speed of construction, improve quality and safety, while providing value to the customer and a rapid return on investment to the builder. However, onsite assembly of modules creates new demands on the schedule, as activities are scheduled on a minute-by-minute basis that simulation of the process becomes essential at the early stage of a project. Although simulation proved to be an effective tool to assist project engineers in assessing complex construction operation, it remains symbolic base model with no visual link to the actual physical shape and look of the project. This paper presents the application of integrated simulation and post simulation visualization as a tool to assist the modular construction industry in scheduling construction projects. The proposed methodology was tested on the planned construction of a prospective highest modular building which is a 35-storey building in New York and was utilized for the selection and location of equipment, including cranes, transportation equipment, and scaffolding. Simulation visualization of the process, proved to be effective in communicating the value and simplicity of a minute-by-minute schedule. Based on the output information, the most efficient solutions were generated. The use of post simulation visualization was effective in analyzing the construction methods of the case study with 950 structural steel modules. Issues related to productivity of construction activities were synchronized to achieve onsite installation of the project in only 56 working days.
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