Sustainability in the Safety Measures of the Historical-Cultural Heritage against Hydraulic Risks

Preservation And Sustainability Policies For The Historic Centres: Methodological Approach

An analysis of the scientific literature and methods in the determination of hydraulic risk (a function of hazard, vulnerability and exposure) has been identified in the methodological approach described below.

This approach considers as basic premise the concept of sustainability (Figure 1) which, if accompanied by processes of cognitive-participatory and, by appropriate information technology, will serve as a DSS (Decision Support System) used by government and the Facilities Civil Protection for the identification of sustainable interventions to be deployed in historic centres (the preventive planning and emergency management phase).

Figure 1.

Scheme setting methodology⁵

The approach presented in this text draws on different research experiences (see Introduction) which considered the safety of the historical and cultural heritage from natural disasters and sustainability concerns. For the latter, within academic contexts⁶, has been called the “CBA or the three variants” method that, through the use and qualification and quantification of indicators, makes it possible to identify specific actions and/or interventions, sustainable, which are required to implement.

The “CBA” (Figure 2) comes from the experience of the Dutch method DCBA or four variants⁷ integrating it with the intuitive techniques (in particular, has been used and, appropriately revised, the method Delphy). The DCBA method was established for the design and construction of new sustainable neighbourhoods and, therefore included in a urban scale, while the way the CBA has provided for its use in the existing consolidated tissue (such as the Italian territory) and its applicability to systems for large areas.