Abstract
Abstract. This study is part of a more complex research aimed at establishing guidelines to simplify the digitalization process used to manage existing building heritage. Working in a BIM environment, this paper will present two different algorithms: a modelling algorithm, a data analysis algorithm, and relative applications in the digitalization of a contemporary building. All the archival data required for the digitalization process was collected and those in two-dimensional digital vector format have aroused particular interest because they enabled initiation of the reconstruction process of the BIM model. One of the two algorithms allowed us to identify recurrent elements in a CAD drawing, based on geometric 2D primitives. The final outcome of the first phase involves quadrilateral or circular surfaces and can be viewed in algorithmic environment. The next phase involves applying a unique coloured sign to the identified sections and then export them all in a BIM software. This tool produced unexpected positive results: the presence of a small coloured grid emphasized the discrepancies created between the two-dimensional drawings and the vertical elements. We were thus able to identify the objects with these inconsistencies: they were verified using accurate surveys and then corrected.
Highlights
1.1 Scope of the research This study is part of a more complex research aimed at establishing guidelines for public administrations, working in a BIM environment to simplify the digitalization process used to manage existing building heritage (Giannattasio et al, 2019)
Given the potential advantages regarding management, this methodology is increasingly applied to existing building heritage, especially public buildings; in Italy the latter represent approximately 23.08% (230,536 buildings) of all existing building heritage (998,937 buildings) and cover an area of 292,632,285 m2, i.e., 85.51% of the total surface area (Ministero delle Economie e delle Finanze, 2015)
All the archival data required for the digitalization process was collected; the images drafted after a recent survey were of particular interest because they enabled initiation of the reconstruction process of the BIM model
Summary
1.1 Scope of the research This study is part of a more complex research aimed at establishing guidelines for public administrations, working in a BIM environment to simplify the digitalization process used to manage existing building heritage (Giannattasio et al, 2019). It focuses on integrating visual scripting tools into the process used to create models for existing buildings, in particular the definition of objects with complex forms and the analysis and discretisation of geometric input data.
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