## 3 Materials and Methods  
The method used was based on the study, analysis and evaluation of the Lojuela Castle under systematized parameters in order to be able to combine and understand the relationship between the hazard factors and the set of damages that the asset presents. Hence the methodology (Figure 1) is divided into five phases:  
* Phase of knowledge of the reality of heritage. This consisted of the development of a multidisciplinary analysis that has first understood its georeferencing, from the assignment of UTM coordinates and the establishment of the conditions of the environment. Subsequently, a documentary study was carried out, based on archival and bibliographic information relating tohistorical risks and the restoration work carried out [111]. This was complemented by specific fieldwork involving the inspection and direct collection of data and samples of material for the performance of chemical, mineralogical and petrographic characterization tests in order to determine their material and pathologic nature. X-ray diffraction tests (XRD) were carried out to characterize the mineral phases that make up the construction material samples. Moreover, a petrographic study was carried out to describe the structural, compositional and textural properties that characterize each sample. Scanning electron microscopy (with X-ray microanalysis) was also carried out to find out the composition of the sample in a more specific way and to determine small-scale pathologies. The samples were analyzed using A PANalytical X'Pert3 diffractometer equipped with an automatic slit. Data were interpreted using the XPowder 12 software and database from the International Centre for Diffraction Data, in which JCPDS (the Joint Committee on Powder Diffraction Standards) cards were used to distinguish the different crystalline phases. For the petrographic study, a Carl Zeiss \"Jenapol-U\" microscope equipped with a digital camera (Nikon D7000) was used. This enabled the identification of the mineral components, their textural and structural ratios, the degree of decay, the presence of neoformation phases and the study of the cement matrix used in the rammed-earth walls and/or mortars (by dyeing with alizarin red) based on observation of thin sections of each material [27]. The scanning electron microscopy study was carried out with a high-resolution Auriga model from Carl Zeiss SMT, which was equipped with a dispersive X-ray spectroscopy (SEM-EDX) microanalysis system. With this system, it was possible to obtain microanalysis spectra in the different samples and to determine their chemical composition. This phase is concluded with an architectural study of the emerging structures using an unmanned aerial vehicle (UAV) for methodical image capture. The equipment used was a DJI Phantom 2 Vision+ drone that incorporates an FC200 camera with a 1/2.3\" sensor and 14 megapixels (4384 \(\times\)vulnerability \(\times\) exposure), the study aims to know and evaluate the relationship between hazard and vulnerability for each group of risks affecting each asset. Therefore, each hazard is evaluated in particular and its relation to the specific damage it generates in the asset, as well as the intensity with which this damage is produced. The Delphi method was used for the multidimensional evaluation of such intensity [7; 117; 118; 119; 120; 121]. Several stages were established for its application:  
* Generation of the questionnaire and its completion by a group of experts. The questionnaire was provided to a group of 20 experts. All of them had advanced knowledge related to the territory and the conservation of its cultural heritage. The disciplines chosen were: environmental sciences, history of art, archaeology, architecture, construction, engineering, geology, chemistry, restoration and cultural management. * Assessment of the degrees of hazard and vulnerability.