HR LOD based HBIM to detect influences on geometry and shape by stereotomic construction techniques of brick vaults

Abstract

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Holistic Heritage Building Information Modelling (Hhbim): From Nodes to Hub Networking, Vocabularies and Repositories

“…Traditionally introduced and mainly adopted for new building the BIM methodology is characterized by a linear process progressively conceived to enrich the Level of Geometric (LOG) and Information (LOI) of substantially 'simple' objectsfollowing the building construction from the conceptual phase to the executive design phase till to their Long-Life Cycle Management across different Level of Development (LOD). This traditional design logic requires to be completely reviewed, in order to take into account the use of BIM in the Cultural Heritage domain field (Brumana et al, 2018a). In this unique area of research and development, the buildings are not designed but reconstructed from billions of scanned point clouds (digitization and 2D/3D reconstruction modelling) by considering the specificity and the unicity of each object component belonging to a monument or archaeological site, starting from the unicity of the morphological and geometric characteristics.…”

“…In this unique area of research and development, the buildings are not designed but reconstructed from billions of scanned point clouds (digitization and 2D/3D reconstruction modelling) by considering the specificity and the unicity of each object component belonging to a monument or archaeological site, starting from the unicity of the morphological and geometric characteristics. Under the modelling issue, innovative Generative Modelling processing coming from the point cloud extraction of geometric primitives (Banfi, 2017) have been introduced to match the complexity and unicity of the CH: to this aim the adoption of different Grade of Generation have been introduced, with many potential in decoding complex shapes as in the case of apparently similar vaulted objects (Brumana et al, 2018a) or to support the design conservation plan of post damaged architectural heritage, as in the case of an earthquake (Brumana et al, 2018b). The introduction of the BIM concept in Cultural Heritage requires therefore a particular attention to switch from pure 2D/3D models to HBIM in order to support preventive conservation, information sharing and knowledge dissemination of heritage, for professionals, public institutions and experts involved in the decision-making process (Della Torre, 2016).…”

Towards a Semantic Based Hub Platform of Vaulted Systems: Hbim Meets a Geodb

“…Different case studies have been collected during the last 15 years. We had the opportunity to study different vault cases, surveying and modelling their intrados and extrados, to investigate the geometric shape, together with thermal image acquisition in order to analyse the masonry arrangements; many data from the private and public archives on the acquisition of the palaces and their transformation occurred during the centuries have been collected (Landi, 2012): an interdisciplinary researches have been carried out among 'Geomatics and Restorers' (Brumana et al, 2018a) with the aim to deeper investigate the vault elements, to improve the knowledge of the construction technologies, to understand the variety of the geometries, thus to better know the structural behaviour, and to properly finalize their conservation. By investigating the 3D geometry and arrangements, we found out many mixed constructive solutions, obtained from the associations of different typologies, the possibility to go beyond the simplification of the traditional classification of the vault 'typologies', given by many historical treatises of architecture, contributing to highlight many sub-typologies.…”

“…The result gave back an HBIM 3Dmodel where the spherical conceptual shape is tuned toward a groined shape (Oreni at al., 2013). Moreover, Palazzo Magio in Cremona gave the opportunity to identify different typologies, generating a rich abacus of vaults, apparently belonging to a simple 'cloister' typology ( Figure 1): it has been detected a pure cloister, the one in the centre of the 3 types, a cloister-to-trompe on the corners (upper) and a dome-to-trompe on the corners (below) to obtain a dome adapted to a rectangular space to give the idea of a cloister vault: three different sub-solutions and construction techniques on the common cloister tyypology (Brumana, 2018a).…”

“…Heritage Building Information Modelling (HBIM) represents systems capable to correlate 3D Models -describing the volumetric geometry of heritage architectural objects, including the 3D stratigraphic texturing and arrangements (Brumana at al., 2018a) and all the precious elements dense of history (i.e. walls, covering systems, vaults, stairs, windows, doors) -with the different Information collected (materials, construction techniques, dating, historical data, physical properties, data volume for metric computation, archive data, historical documents and so on).…”