Análise comparativa do impacto do sistema de lajes protendidas no custo de pilares e fundações.

Abstract

The current construction market has undergone several transformations. resulting largely from the need to combine constructive practices with technological innovations, providing greater productivity, rationalization of costs, reduced deadlines and other characteristics required by the market each increasingly competitive and demanding. In this context, the use of concrete prestressed has become very useful, especially in structures that have large free spans and are subject to high loads. Therefore, the The present work aims to carry out a study of the economic impact in pillars and elements of foundations resulting from the application of slab in prestressed concrete, making a parallel to solid slabs, comparing quantity of materials and budgets will be used two methods of different composition and pricing, therefore, the study will also be descriptive characteristic, since it describes the parameters, their advantages and disadvantages. The comparison obtained a result in a savings of R$ 158,498.10 in the option for the system with prestressing, compared to the system conventional, equivalent to 42.21% difference in structural elements pillars and foundation. In view of the above, for the architecture of the floors analyzed, the structural system of prestressed concrete slab had an impact significant, presenting lower global direct cost in the structural elements pillars and foundation, due to the economy of materials mainly steel and concrete and the productivity of the services involved in the execution of the system.