Prioritize building maintenance system strategies using a combination of multi-criteria decision making methods

Evaluation of maintenance system in the building is one of the key factors in improving the quality of maintenance and repair processes. It can be stated with certainty that all buildings need maintenance and scientific and technical repair after construction, and therefore how to define this system and determine the appropriate indicators and strategies for it will play an important role in the cost and longevity of the building during operation. The purpose of this paper is to identify and prioritize the indicators affecting the maintenance and repair system (R&M) of Residential buildings and determine the most appropriate policy related to it using a combination of multi-criteria decision-making method. In the presented method, first the weight of the indicators was calculated and then the indicators were prioritized based on multi-criteria fuzzy and non-fuzzy decision-making methods.Finally, considering the ranks obtained from those methods, the final ranking of indicators was calculated using the Average rating and Copeland method. The results showed that the indicators of safety, health, accessibility and proper utilization are in the highest priority respectively and reliability are in the last rank. This issue indicates the importance of safety indicator in evaluating the maintenance and Repairs system of buildings. in order to perform maintenance and repair operations, by identifying and prioritizing effective indicators, they can be used to evaluate the maintenance and repair system of the building based on them.Finally, according to the results and with the help of ARAS method, Breakdown Maintenance Strategy was selected as the most appropriate maintenance policy for buildings.The results of this study show that the application of multi-criteria decision-making methods can help the construction industry professionals to select the key effective indicators in the repair and maintenance system and determine appropriate strategies. Finally, suggestions for future research were provided.