# BIM Application in Multi-Criteria Assessment of
## 4 Case Study
### BIM Application Process  
The brickwork masonry facade is the main \"skin\" of a building structure and gives the shape and appearance to the building. Modern architectural practice includes a wide range of digital tools that give an original appearance to building structures. Architectural brickwork masonry elements, such as 3D brickwork, intels, columns, and load-bearing elements, are modeled by applying BIM tools. The application of BIM tools by all project participants allows collaboration during the production stage of the suspended brickwork masonry facade. The design for the production of the suspended brickwork masonry facade is one of the optimal tools used for cost savings due to its complexity. This research promotes BIM application during the production stage of suspended brickwork masonry facades to achieve better results. Manufacturers of building materials and elements are increasingly providing BIM data. It has become important for the production industry to use building material models and to distribute them to existing BIM model participants. The data form the BIM materials and elements to promote economic decisions between designers and architects at the production phase. However, to promote BIM data delivery during the production stage and to manage the BIM process, a BIM working group is needed to facilitate collaboration. The BIM application in this research is based on a list of various ways and steps applied during the reconstruction of the Wroblewski Library of the Lithuanian Academy of Sciences. It can be described as follows:  
1. The collection of initial design data was performed via the evaluation and digitalization of the initial paper design using the basic design software AUTODESK AutoCAD 2020 (Figure 3 was created by the designers before partial demolishing works, showing the detail of the initial design in the DWG format). 2. Real situation analysis was started after the partial demolishing works (Figure 4). The visual investigation conducted by the structural experts identified which parts of the construction had marginal deviations from the acceptable tolerance level (mostly gaps, levels, and inclinations). Then, a precise geodesical survey and laser scanning was initiated to obtain the point cloud array connected to the precise georeferenced points, which were exported from the point cloud and AUTODESK AutoCAD 2020 software, and later used as the background for 3D modeling (Figure 5). 3. The construction model was prepared with a deeper BIM application for the whole multidiscipline design using the AUTODESK Revit 2022 (not only for architecture and construction but also for HVAC and other collaboration design in IFC format). 4. The final design of the suspended brickwork facade layout and suspending load-bearing elements was prepared as a BIM model using the BENTLEY Open Building Designer. 5. The design elements were exported and modeled up to an acceptable level for production using SOLIDWORKS 2022, and the element layout was optimized for resource savings. The improvement made to the BIM model and production occurred through several internal cycles to ensure sustainable design, production intents, and time savings for construction. The BIM technologies can help to implement architectural solutions for masonry facades and analyze the capabilities and limitations of brickwork facades with real facade parameters. The suggested BIM operations and project participants for collaboration in the production stage are shown in Table 1 and the BIM application (Figure 5). Figure 4: Precise site measurements in the axis A–C/1–2 (created by the authors). Figure 3: Digitalization of initial paper design (created by the designers). The BIM model was used for production preparation, production, and logistics. It is necessary to increase the LOD (level of development) of the brickwork support system and brickwork facade as the quality of the design has a great influence on the production.