## 8 Discussion  
Notably, the integration of Autodesk Revit with the NF technique enabled the flexible and precise assembly of components. This innovation partially addresses challenges associated with the non-standardized nature of vernacular forms, previously identified by [PERSON], [PERSON] and [PERSON] [48] and [PERSON], [PERSON] and [PERSON] [49]. The development of a comprehensive BIM component library and a robust automation algorithm allows for the rapid generation of entire structural frames from minimal input parameters. Unlike general parametric design tools, this approach uniquely prioritizes formal and structural fidelity grounded in traditional rules--such as the Sam Ruler--thus supporting both the digitization and reuse of VVA heritage in new contexts. This distinction is critical when compared to existing methodologies. For example, GENE_ARCH [67] employs evolutionary algorithms to optimize building performance (e.g., energy efficiency) but does not prioritize the preservation of traditional structural logic. Similarly, the study by [PERSON] and [PERSON] [16] introduced a parametric modeling approach based on the \"Kan\" (bay) concept to reduce construction costs through CAM-based prefabrication. While these approaches apply BIM and parameterization to traditional East Asian wooden architecture, the present study differs in its explicit focus on automating the conceptual design of complete structural frames using Revit and Dynamo, based on encoded VVA design principles and characteristic truss types. Figure 16: Results of Automation Model Construction using Dynamo in Revit. Furthermore, whereas [PERSON] and [PERSON] utilized Digital Project to emphasize parametric control of modular \"assembly units\" for customization and prefabrication, and studies such as those on Southern Vietnamese traditional houses [23] proposed design lessons and illustrative prototypes, this study advances the field by offering a specific technical method and automation algorithm. These innovations enable the direct generation of structural frame designs grounded in traditional construction principles, thus transforming tacit cultural knowledge into a computable and replicable generative design process. In doing so, the study lays the groundwork for the development of advanced design support tools. In addition, while prior studies primarily employed HBIM for preservation purposes--often through laser scanning and point clouds--this research expands the scope of BIM from documentation to new design ideation. For instance, [PERSON], [PERSON] and [PERSON] [45] focused on the accurate reconstruction of historic geometries, albeit through manual or semi-automated methods that limit scalability for new applications. Similarly, [PERSON], [PERSON] and [PERSON] [47] emphasized documentation but encountered obstacles in automating complex vernacular form recognition. In contrast, this study leverages the NF technique within Revit to enable flexible assembly of non-standardized components, such as stacked beams and Gong-hanger roof structures, achieving an effective integration of cultural authenticity and technical precision. This approach helps to reconcile the mismatch between BIM's standardized framework and the bespoke nature of VVA, as highlighted by [PERSON], [PERSON] and [PERSON] [49]. The automated configuration algorithm developed in this study--implemented via Dynamo in Revit--marks a notable technical advancement. In contrast to works by [PERSON] et al. [19], [PERSON] [22], [PERSON], et al. [68], and [PERSON] et al. [44], which focus on integrating point clouds into BIM for heritage documentation without automation capabilities, the current approach enables the rapid generation of complete structural frames from minimal user input. The five-phase automation framework demonstrated here significantly outperforms manual modeling in both speed and accuracy, as evidenced by its successful application to a U-shaped VVA structural frame.