# BIM Application in Multi-Criteria Assessment of
## 4 Case Study
### BIM Application Process
During the construction stage, the required level of design documentation development is the LOD 300 or LOD 350 [51]. However, the recommended level of detail for the suspended brickwork facade is the LOD 400 because, for the MDP (design for production), a higher level of detail is required. Data for the support elements of the brickwork and brickwork facade are necessary to define the elements and create BOM (building object model) elements [52] for trial production. A full characterization of the BOM elements has great importance in production preparation. A BOM is a building product model which is a component of the BIM model [53]. All data were generated from the model \begin{table}
\begin{tabular}{c c c} \hline
**BIM Operation** & **Project Participants** & **BIM Application** \\ \hline \multirow{2}{*}{Brickwork facade model} & Architect, general contractor, and & \\  & brick manufacturer & BIM model application \\ \hline \multirow{2}{*}{Model for brickwork support elements} & Designer, general contractor, and & \\  & brickwork support system manufacturer & BIM model application \\ \hline \multirow{2}{*}{Brickwork and brickwork support element virtual layouts} & Architect, designer, general contractor, & \\  & and mason & \\ \hline \multirow{2}{*}{Cash detection} & Architect and general contractor & BIM model application \\ \hline \multirow{2}{*}{Detail improvement} & Architect and general contractor & BIM model application \\ \hline \multirow{2}{*}{Brickwork and brickwork support element work project} & Architect and designer & BIM model application \\ \hline \multirow{2}{*}{Quantity of bricks} & Mason, work manager, supplier of & \\  & materials, architect, and manufacturer & Application of architectural model \\ \hline \multirow{2}{*}{Quantity of brickwork support elements} & Designer, architect, and manufacturer & Application of architectural and \\  & & construction model \\ \hline \multirow{2}{*}{Component drawings for production} & Manufacturer and general contractor & BIM model for production \\ \hline \multirow{2}{*}{Production} & Manufacturer and general contractor & BIM model for production \\ \hline \multirow{2}{*}{Logistics} & Manufacturer and general contractor & BIM and GIS application \\ \hline \end{tabular}
\end{table} 
Table 1: The design for production collaboration by applying BIM. Figure 5: BIM model for production preparation (brickwork facade created by the authors). (Figures 6 and 7), and all BOM elements were used to prepare for production (3D model and production drawing) and to calculate the estimated value of the project elements (Figure 8). Furthermore, the BIM model was used for a lean process in logistics and in storage for cost savings [54]. Moreover, the BIM model and the MCDM technique were used during the selection of the suspended brickwork facade installation method to save costs in this research. The BIM construction model was used to design the architectural model and suspended brickwork system in order to compare the three installation methods through the three production stages. The preparation for production stage was first analyzed, followed by the production stage and, finally, the logistic stage. The model was also used for trial production and estimation of quantitative take-off of materials during the  
Figure 6: Side view of the BIM model (created by the authors). Figure 7: Detailed view of the BIM model (created by the authors). production and logistic stages. The greatest benefits of applying BIM in the production stage are production management, schedule control, and cost monitoring.