A multi-scale stratigraphicHBIM-GIS method for the characterization of structures in heritage sites

The implementation of Stratigraphic analysis in HBIM (Heritage Building Information Modelling), and the combination with GIS (Geographic Information Systems) is an active field of research that needs deeper knowledge and exploration. This work focuses on approaching this especially necessary translation of architectural and archaeological heritage into ‘as-built’ digital models that reliably represent and identify the characteristics of both the studied objects and their context. For this purpose, a novel multi-scale and multidisciplinary method is proposed to provide an integrated Stratigraphic-HBIM-GIS model. The 3D representation is developed in a specific open-access software that allows for: the interrelation of information from different data sources, its continuous upgrade, and its use from various expertise fields. The method has been validated by applying it to a singular Roman hydraulic structure located in the Archaeological Ensemble of Baelo Claudia (Cádiz, Spain), the Punta Paloma aqueduct (Chorrera section). It has been obtained the following valuable results: development of a GIS database of an archaeological ensemble, the identification of stratigraphic units and its implementation in a digital model associated with archaeological, architectural and historic data, the definition of possible vulnerability factors, and cross-referenced graphic information regarding historic data, archaeological excavation and context features. This method could be applied to enable the digitalization of archaeological and heritage structures, to valorize them from different frameworks, and also as a useful tool within preventive conservation works.