Impactos de parâmetros de projetistas no quantitativo de obras de redes coletoras de esgoto sanitário

Abstract

Basic sanitation in Brazil has had numbers that are far from ideal, especially when it comes to sewage collection, despite its importance to the quality of life of society. The implementation of basic sanitation infrastructure is mandatory in the planning of urban expansions, and subdivisions are one of these forms. This work aimed at analyzing different cases and conceptions of sewage collector network sizing, from different designers, comparing the parameters used with the norms and requirements of the companies in charge of receiving the works executed in the subdivisions. After a critical comparison of the parameters adopted in the study projects, the data found was replicated in two fictitious project examples, in order to generate a quantity of materials and services, analyzing the impact of each of these items on the global figures of the projects. Once the projects were compared, it was found that most of the parameters adopted were the same for all designers. After analyzing the modeling, the use of safety coefficients that go against efficiency was confirmed, negatively impacting the costs of materials and labor.