SINAPI and CPOS Review Proposal to Effective BIM Incorporation of These Measurement Criteria in Public Works

Building Information Modeling has been stimulated by the government in Brazil through decrees such as n° 9,983/2019, the creation of technical standards (ABNT NBR 15,965) and also concrete actions by the private sector. One of the characteristics of this technology that is most interesting at first is the possibility of performing a kind of virtual construction in line with a set of information (time, cost, specifications) for each modeled element. In this sense, one of the most common difficulties is the optimization regarding the automatic extraction of quantitative in order to realize a budget in harmony with the existing service standardization. This paper details the challenges inherent in modeling aiming the automatic quantities extraction from a public work in Brazil and demonstrates the difficulties in the relationship of the modeled objects and the SINAPI (Sistema Nacional de Pesquisa de Custos e Índices da Construção Civil) and of CPOS (Companhia Paulista de Obras e Serviços) measurement criteria. It was noted that the multiplicity of options for the same service, especially the presented by SINAPI measurement criteria, demands a huge modeling effort to assure a reliable extraction of quantitative data. It was also noted that the need to create a specific model for budgeting in the bidding phase, in order to make the necessary modifications to meet the measurement criteria. The study tested different ways of obtaining quantitative, comparing them in their advantages and disadvantages.