Metodologias de Dimensionamento de Condutores Verticais para Águas Pluviais em Edificações

Abstract

This undergraduate thesis addresses alternative methodologies for designing vertical rainwater pipes found in gravity drainage systems of buildings. Its objective is to demonstrate, through comparative analysis, different design techniques, prescribed in technical standards from other countries, for sizing vertical rainwater discharge pipes, presenting their various criteria and comparing them to the methodology commonly applied in Brazil, as described in NBR 10844:1989. In order to achieve this goal, a case study was performed, in which vertical rainwater discharge conduits were sized for each chosen plumbing code (American, European, and Brazilian) in three hypothetical warehouses, different in size, but under the same rainfall conditions. By presenting the sizing through a compilation of calculation procedures from technical literature, a brief comparison is made regarding their design flexibilities, demonstrating most of all the limitations of the Brazilian code of practice, as seen in its project flow, gutter’s water height and downpipe diameters narrow applicability, and exhibits the collected codices’ ability in providing satisfactory vertical downpipe design results, through their respective criteria.