The BIM model, created at a level of detail of LOD 300, was used as a basis for a wide range of technical and economic analyses and decisions during the DALI (Documentation for Approval of Intervention Works) stage:

• – Analysis of the technical condition of the building and preparation of technical expertise;
  – Evaluation and integration of energy audit conclusions into intervention scenarios;
  – Outlining alternatives for consolidation and functional reconfiguration;
  – Preparation of documentation for obtaining the necessary approvals;
  – Collecting and coordinating design information in a Common Data Environment (CDE).

By using the 3D model, architects and engineers were able to quickly identify discrepancies between historical plans and the actual condition of the building. This was essential, especially in identifying valuable architectural elements that needed restoration, as well as areas where structural reinforcement required functional or aesthetic adaptations.

A major advantage of the model was the ability to simulate various intervention scenarios, with a realistic assessment of their impact. Thus, the architectural and engineering solutions were calibrated according to the existing constraints: the lack of partitions on the ground floor (where commercial spaces are located), the need to create technical spaces in the basement, the restoration of insulation systems, or the introduction of new installation routes.

The model enabled the design of a minimally invasive reinforcement scenario, with the aim of reducing the seismic risk of the building from class Rs I to Rs III. The proposed interventions included:

• – shoring up vertical elements (columns, beams);
  – introducing structural walls in carefully selected areas;
  – local reinforcement of floors;
  – complete restoration of insulation and finishes;
  – rehabilitation of natural stone architectural elements;
  – repurposing interior partitions.