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The civil construction is considered as one of the activities that consume a lot of energy. The residential sector is highlighted because it uses the energy equivalent of the commercial and public sectors together, considering all energy sources, such as the energy to produce materials and components, and also the energy used in the use phase of the built environment. Practices of actions aimed to the economy of construction, from the design phase to execution are very timely, given the current energy crisis that the country is facing. This paper investigates the relationship between compactness of buildings from ventures of social interest housing, with the amount of embodied energy (EE) and dioxide carbon emissions (CO2) of building materials. Understanding EE as the amount of energy used for the production of certain product and considering CO2 as a leading contributor of greenhouse gases. Five buildings had the amount of EE calculated, considering similar areas and the same constructive system of structural masonry with ceramic blocks. The variable of the study consisted on the economic index compactness of the buildings, which changed according to the geometrical configuration of the same. The results show that the higher is the compactness of the buildings, the lower is the amount of EE and CO2 emissions, reaching the divergence from 20% to 21% for EE and CO2 emissions, between the five projects analyzed.

A relação entre a compacidade de prédios e montante de energia incorporada e emissões de CO2 em EHIS