Investigation of the Critical Factors Influencing Multi-Stakeholders’ Participation in Design Optimization of EPC Projects

Design optimization can influence the achievement of management goals and sustainable development EPC (engineering–procurement–construction) projects. Current research regarding engineering design mainly focuses on technology aspect, while lacking extensive attention factors influencing stakeholders’ participation in Based existing literature expert opinions, this study identifies 33 critical adopts DEMATEL (decision-making trial evaluation laboratory) ISM (interpretive structural model) method to analyze hierarchical structure interrelationships among these factors. The results show that factors, including subcontractors’ during design, level, performance mechanism, technological development, owners’ attitude towards disputes, sensitivity project cost growth, play roles multi-stakeholders’ All be divided into causal (13) result (20) a model is developed for whole system, composed three types is, surface direct factor, intermediate indirect deep-rooted factor. findings help managers have better understanding projects from stakeholder perspective take effective measures improve status quo as well facilitate kind project.