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.摘要 数据互换性是信息数字化的必要条件。巴西公共工程的信息数字化涉及巴西全国民用建筑成本与指数调查系统（National System of Investigation of Costs and Indices of Civil Construction，简称SINAPI）与建筑信息模型（Building Information Model，简称BIM）之间的成本结构整合。标准NBR 15965《建筑信息分类体系》的结构与SINAPI存在差异，这一特性阻碍了二者的互操作性。本研究旨在为两大系统的整合提出建议。为此，研究人员对成本构成项92722及其与NBR 15965编码的关联关系展开了分析。在服务表征所需的45项NBR 15965编码中，12项已纳入公开表格"0P"、"1F"与"5I"；19项可归入公开表格"0M"、"0P"、"1S"与"5I"；另有11项编码可纳入后续待发布的表格（"2Q"、"2N"、"3R"、"3E"与"4A"）。本研究提出的建议如下：将时间、成本、材料消耗量等属性与成本构成系数相关联，并纳入材料、材料属性以及建筑服务选择标准。本研究的主要贡献在于明确了SINAPI属性与NBR 15965标准中存在的不足，这是二者整合领域的首次相关尝试。