Análise da viabilidade econômica de um sistema de reaproveitamento de água cinza, em edificação residencial, através do uso do BIM

Abstract

Sustainable Construction and BIM are central themes in the development of the Architecture, Engineering and Construction Industry (AEC). This is due to the fact that it is an industry that promotes environmental degradation, through a high consumption of natural resources, such as water and energy, and also because of the enormous amount of waste it produces. Adopting a system of reuse of grey water can result in savings of potable water, collaborating with the Brazilian goals for greater environmental sustainability in buildings. Thus, it is important to carry out research that deepens the knowledge of the application of solutions of systems for the reuse of non-potable water. The practice of reuse of grey water is still incipient in Brazil and in order to encourage the implementation of this system, economic and technical feasibility studies are needed to determine the relationship between cost and benefit and the potential for saving potable water. Within this perspective, this work aims to determine the period of return on investment in a system for the reuse of grey water for non-potable purposes in a multi-family residential building in Uberlândia (MG), using a BIM tool. The BIM methodology presents tools that can help in compatibilization and budgeting analysis in order to generate faster results in comparison with conventional methods, saving substantial time and resources. The systems of collection, distribution and treatment of water for the building were defined and, with this, it was possible to estimate the costs of implementing the system of reuse of grey water, which at the end presented a period of return of 7,7 years for the capital invested.