Análise comparativa da viabilidade do Pex em projetos hidráulicos: estudo de caso
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Com o crescimento da tecnologia, é amplamente reconhecido que há uma vasta variedade de materiais disponíveis no mercado para a construção civil, além daqueles já adotados pelos projetistas. Nesse sentido, o PVC é o material mais aplicado em instalações de água fria, sendo valorizado por sua leveza. Contudo, com os desenvolvimentos tecnológicos, o PEX emergiu como uma alternativa, devido à sua flexibilidade e oferecendo a vantagem de reduzir o número de conexões necessárias. Dessa forma, esta análise tem como objetivo avaliar, sob os aspectos econômicos e hidráulicos, a viabilidade do uso do PEX em substituição aos materiais convencionais, como o PVC e o PPR, em instalações hidráulicas prediais. Para isso, realizou-se um estudo de caso, em que foram elaborados quatro projetos para o segundo andar de um edifício: dois utilizando o PEX como material principal, sendo lançado um pelo contrapiso e um pelo forro e outros dois empregando o PVC e o PPR como materiais principais, sendo lançados também pelo contrapiso e pelo forro. Após o desenvolvimento dos traçados foi feito o dimensionamento dos projetos, além disso, foram realizados os levantamentos dos quantitativos para desenvolver os orçamentos. Assim, o sistema PEX pelo forro se destaca como a opção mais vantajosa por aliar bom dimensionamento nos pontos de consumo e menor custo, refletindo a crescente adoção desse método no mercado.
With the advancement of technology, it is widely recognized that there is a vast variety of materials available in the civil construction market, in addition to those traditionally adopted by designers. In this context, PVC is the most commonly used material for cold water installations, being valued for its lightness. However, with technological developments, PEX has emerged as an alternative due to its flexibility and offering the advantage of reducing the number of required connections. Thus, this analysis aims to evaluate the feasibility of using PEX instead of conventional materials such as PVC and PPR in building hydraulic installations from both economic and hydraulic perspectives. To achieve this, a case study was conducted in which four projects were developed for the second floor of a building: two using PEX as the primary material - one installed through the subfloor and another through the ceiling - and two others employing PVC and PPR as primary materials, also installed through the subfloor and ceiling. After designing the layouts, the project was dimensioned, and quantity surveys were carried out to develop the budget for both approaches. As a result, the PEX system installed through the ceiling stands out as the most advantageous option, combining efficient consumption point sizing with lower costs, reflecting the growing adoption of this method in the market.
With the advancement of technology, it is widely recognized that there is a vast variety of materials available in the civil construction market, in addition to those traditionally adopted by designers. In this context, PVC is the most commonly used material for cold water installations, being valued for its lightness. However, with technological developments, PEX has emerged as an alternative due to its flexibility and offering the advantage of reducing the number of required connections. Thus, this analysis aims to evaluate the feasibility of using PEX instead of conventional materials such as PVC and PPR in building hydraulic installations from both economic and hydraulic perspectives. To achieve this, a case study was conducted in which four projects were developed for the second floor of a building: two using PEX as the primary material - one installed through the subfloor and another through the ceiling - and two others employing PVC and PPR as primary materials, also installed through the subfloor and ceiling. After designing the layouts, the project was dimensioned, and quantity surveys were carried out to develop the budget for both approaches. As a result, the PEX system installed through the ceiling stands out as the most advantageous option, combining efficient consumption point sizing with lower costs, reflecting the growing adoption of this method in the market.
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SOUZA, Melanie Eloisa da Costa; FINATO, Vitória Costa. Análise comparativa da viabilidade do Pex em projetos hidráulicos: estudo de caso. Trabalho de Conclusão de Curso (Bacharelado em Engenharia Civil) – Instituto Federal de Santa Catarina, Florianópolis, 2025
