Recommendations for the implementation of interoperability between SINAPI and NBR 15965 standards

Abstract

Data interchangeability is a requirement of information digitalization. The digitization of information in Brazilian public works involves cost structure integration between the National System of Investigation of Costs and Indices of Civil Construction (SINAPI)) with the Building Information Model (BIM). The standard NBR 15965 - Construction Information Classification System has a different structure than SINAPI: this characteristic hinders interoperability. The aim of this research study is to make recommendations for the integration between the two systems. For this purpose, cost composition 92722 and its links with NBR 15965 codes were analysed. From the forty-five codes in NBR 15965, necessary for the characterization of the service, twelve are on the published tables “0P”, “1F” and “5I”; nineteen already could be in the published tables “0M”, “0P”, “1S” and “5I” and eleven codes could be considered for future tables (“2Q”, “2N”, “3R”, “3E” and “4A”). The recommendations made by this study are as follows: to associate properties (time, cost, material consumption) to the cost composition coefficients and include materials, materials’ properties and the choice criteria for the selection of construction services. The main contribution of this paper is the identification of gaps in SINAPI’s attributes and in NBR 15965 standards, configuring the first initiative for their integration.

Keywords:
Interoperability; BIM; Cost estimation; SINAPI; NBR 15965