A purchasing portfolio model for the commercial construction industry: a case study in a mega mall

The procurement phase is known as a major component of engineering, procurement and construction (EPC) projects. One of the main reasons for the lack of timely completion of projects and creating additional costs is the poor performance of companies in this phase. The complexity of the purchasing process arises from a wide variety of project purchasing items and their suppliers. A purchasing portfolio model (PPM) has been developed based on the...