Concrete is a material widely used in structures in civil construction, therefore, the
need to seek materials that make up more and more efficient is evident, in order to improve
construction processes and reduce costs. The use of EPS (Expanded Polystyrene) in the
production of concrete, partially replacing the coarse aggregate, reduces the specific mass of
the concrete, modified as a reduction in the structure's own weight, thus generating impacts on
the consumption of some materials such as steel and reducing the active efforts in
foundations. The objective of this work is to verify the impacts of using lightweight concrete
compared to conventional concrete in the construction of a 110m2 house, carrying out a
comparative analysis of the costs of materials performed in the execution of the building
structure in question with the help of SINAPI input table. Through the study carried out, it
was possible to observe a reduction in the structure's own weight compared to conventional
concrete (approximately 35%), which resulted in a reduction in the consumption of steel in
the superstructure and no volume of concrete used in the foundations.
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