Implementation of Lean tools as a way to increase the operational efficiency of a construction project

Construction technologies are currently actively developing. Projects are becoming more complex, requirements for the timing and quality of construction projects are increasing. Downtime and error correction are becoming increasingly expensive. In this regard, it is necessary to apply new management techniques, methods and tools that take into account modern needs. Materials and methods. The paper analyzes literary sources and statistical data on the application of lean manufacturing tools. The main aspects of lean manufacturing tools that are important for construction projects are synthesized. Using the hierarchy analysis method, the lean manufacturing methodology that best meets the requirements and characteristics of the construction project is selected. The research objective is to determine the optimal Lean tool aimed at improving the operational efficiency of a construction project. Results. The key factors in reducing the operational efficiency of a construction project are presented. According to available statistics, about 70–80 % of all losses are due to design errors and poor communication in projects, which emphasizes the need and importance of introducing digital technologies, lean manufacturing methods and modern tools for stakeholder interaction. The key Lean tools such as Poka-Yoke, 5S, Visual Management and VSM are considered. Their main aspects, areas of application, potential effects when implemented in construction are highlighted. A methodology for selecting the most suitable Lean tool for a construction project is presented. The analysis showed that the 5S methodology has the greatest potential for improving the operational efficiency of a construction project. Conclusion. In general, studies show that Lean tools allow for the systematic elimination of inefficiencies such as the cost of correcting defects and downtime, which leads to a significant increase in overall labor productivity and a reduction in construction time. The key success factor is an integrated approach that includes training project participants, implementing continuous improvement mechanisms and creating an environment for effective teamwork.