Dimensionamento de instalação predial de água fria como alternativa mais econômica em uma edificação multifamiliar: um estudo de caso

Abstract

The exponencial increase in the prices of the construction materials since coronavírus pandemic forces construction companies and engineers to look for economically viable new solutions for the buildings in general. Some of the materials that had a significant increase of their value was the polivynil chloride (PVC) materials, widely used in hydraulic and sanitary connections of buildings. In light of this, the current study aims to propose and size a more economically viable alternative to the proposed water system. For this, firstly, the existing cold water network in the project was dimensioned, following the dimensioning parameters proposed by NBR 5626/2020. After that, a new cold water network was designed, using less piping and connections. The new cold water network was also sized following the concepts presented in NBR 5626/2020 and, after that, it was possible to compare the amount of material used in the two options and also to compare the cost difference of the two alternatives. It was possible to compare the amount of material used in the two options, prove that the new alternative is, in fact, more economical and also propose architectural solutions for the execution of the new system. The present work may help companies in decision making when executing cold water projects, aiming at a more economical and efficient option.