Building information modeling: example of use IDS file and bSDD data base for acoustic evaluation

The obligation of BIM (Building Information Modeling) in Europe is regulated by Directive 2014/24/EU on public procurement, promoting its use to improve efficiency and transparency in public projects. In Italy, the New Procurement Code (Legislative Decree 36/2023) mandates BIM for public works above a specific value starting January 1, 2025. In contrast, Poland does not currently mandate BIM, with its implementation driven by the private sector voluntarily. However, the Ministry of Infrastructure and Construction in Poland is working to integrate BIM into public procurement contracts to achieve significant savings for the State Treasury. The use of BIM is growing, with many technical standards requiring open and interoperable formats like IFC (Industry Foundation Classes) defined by an ISO standard to ensure collaboration among stakeholders. This work analyses the information managed by the IFC format for acoustic purposes with an automated verification approach through an IDS (Information Delivery Specification) file. Additionally, it defines the main variables provided by reference standards and not present by default in the IFC file through the use of the bSDD (building SMART Data Dictionary), where all variables should be described in geometric and physical terms.