Investigating the Factors Responsible for the Material Delivery Time Variance in the Construction Supply Chain of Prefabricated Products

Abstract

The construction industry is a complex structure of various bodies that contributes in a unique way such that their proper workflow ensures project success. It is a known practice in the construction industry to change the scheduled material delivery date too often, asking how reliable is the material order variability? How does the system react to that variability? What are the reasons behind that order variability? This research investigates the material delivery order reliability in the construction supply chain for prefabricated products. Qualitative data will support statistical analysis, and the system dynamics model will show the connectivity between the variables. The system dynamics model will be used to understand the working of the order variability environment, which qualitative data will back. The quantitative data showed thepattern that most of the material resulted in skewing right and with leptokurtic distribution denoting that the material was ordered earlier than scheduled, and the variability pattern was unstable and unpredictable. On the other hand, the qualitative data provided reasoning for material delivery variances noting 11 critical points.