In terms of the proposed framework, this study should yield results that answer the question: what is the environmental impact of the processes related to the construction of each combination proposed? According to the study aim, the functional unit is the total surface of the walls in each case.The system assessed is composed of each process in the production, construction, maintenance, deconstruction and final disposal of all components of the building structure. It does not include those processes related to the operational phase of the dwelling.The system includes the following processes: