Defined Variables for Modular Construction Multi Project Scheduling

The modular construction has several advantages such as high quality of product, safe work condition and short construction duration. So, it is adopted and utilized widely to product the house buildings. Meanwhile, the modular construction is composed of manufacturing modular units in factories and erecting it on the site. In this circumstance, the scheduling of modular construction should consider timeframe of manufacturing, transport and erection process with limited resources (e.g., modular units, transporter and workers). Also, this has a characteristic generated from the environmental condition of modular construction, which share resource pool such as the productivity of factory, storage for modular units and workers. So, the concept of multi project scheduling for modular construction should be also considered. The multi project scheduling of modular construction would manage the modular construction’s characteristics and diversity of projects, as a type of modular unit, quantities, and date for delivery. In this circumstance, this research preferentially performs to define variables of required resources from numerous literature reviews and expert interviews for multi project scheduling of modular construction. The authors regard that proposed variables are used for building a scheduling of multi project modular construction and suggest a framework for schedule optimization considering factory, shipping and erection process.