# GIS and BIM as Integrated Digital Environments for Modeling and Monitoring of Historic Buildings
## 3 Results
### Integration of HBIM with GIS Results  
The semantic enrichment of the HBIM of the historic building, addresses various use cases of heritage buildings in the Mediterranean region, incorporating information in relation to the categories of \"wall components\", \"stairs\", \"windows\", \"roofs\" and \"doors\". In the case of Villa Klonaridi, information deriving from the state of preservation study--including all the information regarding the building materials used, the types of construction walls, the historical documentation study and the structural analysis, are linked, semantically enriching the model. Moreover, the analysis of building  
Figure 16: Wall structural element of the 1 st construction phase incorporating stratigraphic information.  
materials' information, as well as their distribution in GIS thematic maps, are enclosed within the HBIM in terms of semantic enrichment, creating an innovative approach towards building material and decay information analysis utilizing the tools provided by Revit. In Figure 18a,b, the integration of decay mapping in terms of cracks, and their classification type, as it has been developed through the GIS operation tools, within an HBIM environment, is demonstrated. In the updated HBIM, the cracks have been created, according to their classification type (capillary, medium size, side to side), including thus not only the qualitative enrichment but also the quantification of data regarding cracks, which affect the structural stability and response of the structure. Through this insight information, interventions regarding restoration works may be monitored, not only in a qualitative manner but also in terms of quantification of the restoration works and their durability and effectiveness, leading to the optimum results towards sustainable preservation and intervention works.  
Figure 17: HBIM of the historic building of Villa Kłonaridi.  
Figure 18: Elements of cracks (all types) embedded within the HBIM of the building: (**a**) southeast of the historic building; (**b**) southwest of the historic building.  
The elements of the cracks as a result of decay mechanisms were incorporated in the HBIM as voids. Information regarding geographical data as well as which wall element is cut, can be obtained. However, this type of information, embedded within a BIM system, can be altered and quantitative information can derive from such elements, only if the void is transformed in a solid element. Once the crack obtains a solid element character, building material type can be imported. Within this framework, restoration plans, described only in studies and reports and implemented only on-site, can be incorporated within the HBIM system, including information regarding the compatible restoration material, selected per structural construction phase, as well as the prevailing degradation mechanisms. In Figure 19, a lime clay filling mortar of 1 MPa compressive strength is created (as a material type in HBIM), including all the morphological and physical-chemical characteristics, as the study indicates [49]; thus providing qualitative and quantitative information for the restoration process, ensuring compatible and performing restoration actions, as well as adequate documentation of restoration works.