GNGTS 2023 - Atti del 41° Convegno Nazionale

Session 2.2 GNGTS 2023 Figure 2: VISUS graphical indicators 10 years of VISUS implementations under UNESCO contribution. The evolution of the VISUS methodology has gone through three main phases over the last ten years (Fig. 3): first, the set-up of the methodology considering the seismic hazard; second, the evolution towards a multi-hazard assessment and the scientific revision; and third, the implementation in pilot projects all over the world. In the first phase, VISUS methodology was set-up considering the seismic safety assessment. In 2009, VISUS was created in the framework of the “Analysis of seismic scenarios of school buildings for a definition of intervention priorities for the seismic risk reduction - ASSESS” project in Italy (Grimaz et al., 2016; Grimaz & Malisan, 2016). Then, in 2013 VISUS was identified by UNESCO DRR as a candidate for UNESCO’s evaluation of the safety of schools, and it was tested for assessing the seismic safety of school facilities during a pilot project in El Salvador (Peña Figueroa et al., 2020). The purpose was both assessing the seismic safety of schools and testing the possibility of using VISUS as a methodology for knowledge transfer, capacity development and training of VISUS trainees and surveyors. Following positive feedback from the pilot project in El Salvador, VISUS was then adopted by UNESCO DRR (UNESCO, 2015) for safety assessments of learning facilities, with the requirement that it be extended to include multi-hazard safety assessment. This implied a strong revision and innovation of VISUS to balance all-hazards assessments with a pragmatic perspective. The new