Comparison of the level of information need in model uses

Energy efficiency analysis, photovoltaic sizing and cost estimation

Abstract

Building Information Modeling (BIM) has been widely adopted in the construction industry; however, the efficient management of information remains a significant challenge, particularly regarding the definition of information requirements for different purposes. The ABNT NBR ISO 19650:1-2024 introduces the concept of the Level of Information Need, which establishes appropriate levels of information according to the various model uses throughout the building life cycle. This study aims to apply this concept during the design phase by analyzing and comparing the information required for a window in model uses of cost estimation, energy analysis, and photovoltaic system sizing. The research adopts a qualitative and exploratory approach, employing a case study to identify, for each use, the geometric and alphanumeric information, as well as related documentation. Furthermore, the identified information was aligned with attributes and properties defined in the IFC schema, in order to promote interoperability. The results suggest that the precise specification of information requirements can optimize the modeling process and enhance the efficiency of project deliverables, ensuring alignment with specific demands of each project phase. The study concludes that the clear definition of information needs is essential for effective information management and for fostering greater coordination among project stakeholders.