**5. Conclusions**

The BIM methodology adopted for the development of this project has helped and contributed to progress and achievement of satisfactory results, thus proving its effectiveness, even with certain shortcomings, in the industrial heritage environment. In the case that concerns us, through the use of the BIM methodology, students progressively acquired a high level of understanding of the technical aspects of a project. Through a holistic approach, which is part of the essence of BIM, the students understood the project and its object, and learned to value it as a global entity and not as the sum of its parts.

The academic results obtained by the students and the point of view of the students by participating in this teaching experience lead us to believe that the experience can be extrapolated, within the final degree project course, to other fields of specialization different from that used in this study. The proposed methodology could also be extrapolated to other undergraduate degrees.

The work conducted in this academic proposal represents the initial phase necessary for a proposed intervention, and can be used as a guide for future interventions on industrial heritage buildings with these characteristics.

With this design proposal for the rehabilitation of "La Julita" flour mill, all the design requirements and the marked specifications are fulfilled and encompassed in seven general and indispensable actions: conserve, value, teach, distinguish, take advantage of, protect, and promote.

As explained above, one of the main novelties offered by BIM that makes it very useful, with respect to other methodologies, for the preservation of historic buildings is the possibility of creating a timeline of the different phases that the building underwent. This process allowed us to develop models of the different conditions through which the factory has passed, allowing it to narrate in a much more complete and effective way the life of the building and facilitating its management in the present and in the future, including maintenance tasks.

Conducting rigorous historical background research prior to the intervention and the elaboration of a BIM model containing real content of the industrial complex provided the tools and means to carry out necessary "historical reading" before the preservation of the ruins. The "historical reading" not only provided an iconographic description of the complex and its physical and natural environment, but also may facilitate interpretive iconography, according to Panofsky [60]. Interpretive iconography allows for the recognition and interpretation of the symbolic values of an era and its industrial activity, which will allow us to understand and address the intervention in the most respectful way possible.

**Author Contributions:** Conceptualization, A.S., C.G.-G., P.Z., Z.S., and B.T.; investigation, A.S., C.G.-G., P.Z., Z.S., and B.T.; methodology, A.S., C.G.-G., P.Z., Z.S., and B.T.; supervision, A.S., C.G.-G., P.Z., and Z.S.; validation, A.S., C.G.-G., P.Z., and Z.S.; writing, original draft, A.S., C.G.-G., P.Z., and Z.S.; writing, review and editing, A.S., C.G.-G., P.Z., and Z.S.

**Funding:** This research received no external funding.

**Acknowledgments:** The authors thank all the students who developed the project with their tutors. In addition, authors would like to thank the anonymous reviewers for their comments, which have helped to improve the article.

**Conflicts of Interest:** The authors declare no conflict of interest.
