Evaluating the Efficiency of Building Repair and Maintenance System Using Data Envelopment Analysis Method

Given the importance of the repair and maintenance process in keeping equipment and facilities ready for use, it is necessary to assess the process and performance of maintenance indicators regularly so that the repair and maintenance is planned and upgraded. The main purpose of the building repair and maintenance is to control the equipment, facilities, and various building components to determine productivity and optimize their ability to achieve the highest efficiency. As measuring the efficiency is one of the most important performance evaluation methods, evaluating the efficiency of the repair and maintenance is one of the qualitative factors to improve this system. The purpose of this study is to evaluate the efficiency and performance of the repair and maintenance in buildings using a quantitative and provable data envelopment analysis (DEA) method. The results of this study show that the DEA is a suitable method for evaluating the efficiency and productivity of the decision-making units (DMUs).Therefore, first, the questionnaire is formed based on the building repair and maintenance system parameters extracted from Topic 22 of the National Building Code, the ranks are determined, and the results obtained from the sub-indices are integrated by the mean ranking index, and the qestionnaires’ reliability is measured using Cronbach's alpha. Finally, after defining the input and output indices by the DEA, the efficiency of each building and its cost are determined based on the repair and maintenance indices(In a case study of the city of Karaj). The results showed that the minimum and maximum reduction of the cost of charging, maintenance and repair of the building to convert them into an efficient building is 1% and 80%, respectively. Moreover, based on the results, it is possible to provide suggestions to improve the efficiency of the inefficient buildings based on the repair and maintenance costs.