PSI - Issue 62

Adalgisa Zirpoli et al. / Procedia Structural Integrity 62 (2024) 217–224 Adalgisa Zirpoli/ Structural Integrity Procedia 00 (2019) 000 – 000

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part 2. These standards do not provide a completely exhaustive classification system but offer criteria for its development. The objective of this standard is to provide guidance for a correct classification system that can operate internationally. It is applicable to all stages of a building's life cycle, including maintenance and demolition. The classification system comprises a set of classes, ranging from general to specific objects. These classes are organized into levels and determined by their typological relationships. In Italy, UNI-EN-ISO 12006 part 2 was implemented on March 27, 2020, while part 3 was accepted into the same system in 2016. Simultaneously, the Italian system is awaiting the completion of parts 2 and 3 of UNI 11337 (Construction and civil engineering works and Digital management of construction information processes), where further guidelines for classification systems in the BIM perspective in Italy are being discussed. In this research work, a hybrid classification system has been applied, aiming to select the best solution from the options mentioned above for the specific structure chosen as a proof of concept. 2. An interoperable process If a structure is categorized as Attention Category High or Medium-High, the Guidelines recommend adopting the BIM approach. Building a BIM model requires the collection of significantly information, necessitating a comprehensive field survey. To illustrate the procedure more clearly, a proof of concept has been applied. Henceforth, this work will refer to the operations carried out on La Botte Bridge, located in the province of Pisa. Once all the information has been gathered from the on-site survey, the BIM procedure can commence. This procedure follows the flow outlined in Fig. 1, which also specifies the software type employed in this proof of concept. First, georeferencing was carried out. Based on the information gathered from the original documentation, additional research was conducted to retrieve georeferenced data for the area. The geoportals of Tuscany and Pisa were consulted, yielding the following data: WMS (Web Map Service) for RGB Orthophoto and LIDAR survey, shapefiles representing the road network in Pisa and provincial roads, DTM (Digital Terrain Model) in ASCII GRID format (10x10 meters, divided into rectangular sections based on the province's boundary rectangle). For reference: Digital Terrain Models (DTM) represent elevation data points on the land surface and are used in various applications, such as generating surface models, creating contours, or orthorectifying aerial photographs. Web Map Service (WMS) is a standard protocol developed by the Open Geospatial Consortium in 1999 for serving georeferenced map images over the Internet. These images are typically generated by a map server from data stored in a GIS (Geographic Information System) database.

Fig. 1. The BIM procedure.