Performance Indicators Assessment of Project an‎d Lean Construction Using Value Stream Mapping – Case Study: Oman Sea Water Transmission Tunnel to Khorasan Razavi Province

9/7/2026 12:00:00 AM

In this study, initially, by utilizing the daily recorded data in the project, the key performance indicators of the project were calculated to quantitatively assess the project status. Finally, using the field observation method an‎d Edraw Max software, the current state value stream mapping of the project was drawn, an‎d various types of waste in the execution process were identified. After proposing solutions to eliminate the wastes, the future state value stream mapping of the project was also drawn an‎d compared, indicating a significant improvement in execution performance. Additionally, an eva‎luation of the project’s performance over a six-day work cycle (including five days of drilling an‎d one day of shotcrete execution) revealed that during five days of this period, the project experienced bottlenecks, an‎d the actual output had a noticeable gap compared to the expected output. In the next step, assessing the project’s performance over 100 working days led to the calculation of a disruption index of 0.44, a value which considering the baseline threshold (0.4) indicates undesirable performance an‎d severe fluctuations in daily productivity in this project. Moreover, the performance ratio index, with a value of 1.98, showed that the cumulative productivity of the project had a significant difference from the expected value, an‎d the performance targets were not achieved. Subsequently, the project management specific index was also calculated, which, with a value of 0.98, indicated managerial weakness in the project—a situation largely due to the 27-day shutdown of the project an‎d related disruptions. Ultimately, a comparison of the current state an‎d future state value stream mappings of the project after waste elimination showed a 7.10% reduction in the total process execution time.

نگاشت جريان ارزش , بهره‌وري , ساخت ناب

Productivity , Value Stream Mapping , Lean Construction

Amir MARABI

Dr. Ali Akbar Shirzadi Javid