Doc: Untar Public Relations – VH

Tommy Utama Natasasmita successfully defended his doctoral dissertation in the Civil Engineering Doctoral Program at Tarumanagara University (Untar) on December 9, 2024. His dissertation, titled “The Influence of EPC Design on Contractor Cost Performance in Industrial Construction Projects in Indonesia,” explores how design changes in EPC (Engineering, Procurement, and Construction) contracts impact cost performance in industrial construction projects across the country. The open defense was chaired by Untar’s Rector, Prof. Dr. Amad Sudiro, S.H., M.H., M.Kn., M.M., with the primary advisor, Prof. Dr. Ir. Dyah Erny Herwindiati, M.Si. The event was also attended by the Dean of the Faculty of Engineering, Harto Tanujaya, S.T., M.T., Ph.D. During the defense, Tommy presented the background and objectives of his research, which focuses on design modifications that arise from planning errors or contractor-initiated changes. His study highlights cost performance as a key metric in evaluating project success. In this context, the EPC design phase, which occurs at the beginning of a project’s asset lifecycle, plays a crucial role in determining overall project costs and schedules. Referring to regulations and cost performance standards, such as Presidential Regulation No. 16 of 2018 and its Amendment No. 12 of 2021, the research sets a maximum acceptable cost deviation limit of 10%. Through the estimation model developed in his study, Tommy concluded that the initial design quality, contractor competency, and well-prepared tender documents significantly influence final cost performance. His findings are expected to help contractors plan and optimize designs from the early stages of a project, minimizing cost risks and enhancing service quality.
Tommy is the 84th graduate of the Civil Engineering Doctoral Program at the Faculty of Engineering, Untar.
(VH/YS/VC)