PSI - Issue 64

Francesco Calabrò et al. / Procedia Structural Integrity 64 (2024) 1759–1766 1761 Francesco Calabrò, Giovanna E. Minniti, Antonino Fotia, Raffaele Pucinotti / Structural Integrity Procedia 00 (2019) 000 – 000 3 O U + C CO = Concession charges, divided into primary and secondary urbanization charges (O U ) and the contribution to the construction cost (C CO ) S T = Technical expenses (Design, Construction management, Safety coordination, Static testing) I M = Unforeseen events C AS = Cost of connections to public services S G = Overheads S C = Marketing costs I = Interest on invested capital (Financial charges) There are also differences between the different typological price lists. Some, such as those developed by some professional associations and the Regions, report exclusively aggregate values for the different intended uses of the buildings, sometimes distinguishing them by levels of degradation. The price list drawn up by the College of Engineers and Architects of Milan, in addition to the aggregate values, also reports the incidence (absolute and percentage) of the individual processing categories on the entire construction cost. This price list also contains information relating to the consistency of the intervention and its characteristics (foundations, structures, systems and finishes). An example of summary table general structure of the costs of interventions can be as follows:

COD.

WORKS

PRICE

%

01 Excavations and backfills

0,00 € 0,00 € 0,00 € 0,00 € 0,00 € 0,00 € 0,00 € 0,00 € 0,00 € 0,00 € 0,00 € 0,00 € 0,00 € 0,00 € 0,00 € 0,00 € 0,00 € 0,00 € 0,00 € 0,00 € 0,00 € 0,00 € 0,00 € 0,00 € 0,00 €

0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00

02 Sewerage 03 Foundations

04 Insulations and crawl spaces 05 Screeds and waterproofing

06 RC works 07 Steel works

08 Structural consolidations

09 Infills and walls

10 Restorations

11 Plasters

12 Floors and walls

13 Roofing and tinsmithery

14 Paintings

15 Windows and doors

16 Iron works

17 Wooden works 18 Marble works 19 Heating system

20 Plumbing, fire prevention and gas system 21 Electrical, telephone and special system

22 Elevator system 23 Photovoltaic system

24 External accommodations

Total Cost

100,00

Tab. 1: Summary table of construction costs by processing category

From Tab. 1 it is clear how important it is, when drawing up the feasibility project, to identify the type of works that will be carried out to realize the intervention and the estimation of their possible percentage impact on the construction cost.