The purpose of the contribution is to open a debate aiming to identify, considering the new Public Procurement Code (Article 23 Legislative Decree n. 50/2016) which introduces the technical and economic feasibility, the role of the designer, of the planner and of the evaluator. An important innovation came with the introduction of art. 23 of the Legislative Decree n. 50/2016 (in this document Dlgs n. 50/2016). Thanks to this new regulation, the technical and economic feasibility project (replacing the preliminary draft and feasibility study) is further strengthened with regard to the technical and economic quality aspects. In order to prevent that the principles of the aforementioned regulation remain mere enunciations, it is necessary to define the construction of alternatives, the process of choices and the criteria for the evaluation of alternatives. Yesterday, starting from the feasibility study even if in an indicative way, the only need was to know the realizing cost of the work to provide the necessary financial coverage of the intervention. Today in addition, the costumer of the work needs to choose the best design solution based on the definition and selection of alternatives. Nowadays, more than in the past, the shortage of historical data and the difficulty of adjusting cost to peculiar features, often neglecting the possibility to consider economies of scale of their context, have led to excessive simplification of estimation with adverse consequences that can easily be imagined. It is worth remembering that the need for parametric estimations, both for public and private, for network works and punctuation ones, is increasingly emphasized, and is also divided into a number of typologies that can be used for the same building and for all intended use. Although influential, the DEI bulletin of the College of Architects and Engineers of Milan, which reports about 60 records of new constructions to be used as reference prices, is poorly adapted to respond to the variety of estimation queries. This shows clearly the need for an up-to-date database with a broad set of benchmark prices that it should be able to use for such diverse interventions. The bulletin is not enough to cover the requirements for the ex-ante cost analysis during technical and economic feasibilit y. A remarkable positive contribution could have come from the publication of standard costs, considered as a measure of what the cost should be. The Public Works Observatory (Osservatorio dei lavori pubblici) had been charged with drafting a proposal but nowadays in Italy any standardization has not been proposed yet. The contribution also contains the first contents of a research that is being carried out with regard to the determination of significant indicators for the economic and qualitative assessment of residential interventions.
Il presente contributo intende aprire un dibattito alla luce del nuovo codice degli appalti (art. 23 Dlgs 50/2016) sui ruoli del progettista, del pianificatore e del valutatore e sul nuovo progetto di fattibilità tecnica ed economica, con lo scopo di individuare nuovi paradigmi nel campo della progettazione ingegneristica ed architettonica. Il nuovo codice ha portato un’importante innovazione, ovvero il progetto di fattibilità tecnica ed economica, che ha sostituito il progetto preliminare e lo studio di fattibilità, ulteriormente rafforzato da aspetti qualitativi, tecnici ed economici. Se in passato vi era la necessità di valutare il costo di realizzazione dell’opera sin dallo studio di fattibilità per fornire l’indispensabile copertura finanziaria all’intervento, oggi risulta altrettanto fondamentale la messa in condizione del committente di poter scegliere la migliore soluzione progettuale sulla base dell’ individuazione e selezione di una serie di alternative. Oggi più che in passato, la carenza di dati storici e la difficoltà di adeguamento del costo dell’opera alle caratteristiche peculiari dell’oggetto hanno portato ad un’eccessiva semplificazione della stima, spesso trascurando le economie di scala del contesto di riferimento e con conseguenze facilmente immaginabili. Affinché i principi della predetta modifica legislativa non rimangano delle mere enunciazioni, appare necessario ribadire l’importanza della costruzione delle alternative, del processo delle scelte e dei criteri di valutazione delle alternative, per tutti gli interventi, pubblici e privati, per opere a rete e puntuali. Un notevole apporto positivo sarebbe potuto giungere dalla divulgazione dei costi standard, per cui era deputato l’Osservatorio dei lavori pubblici a oggi mai avvenuta.
La parametrazione delle quantità fisiche nella definizione dei costi parametrici Il Decreto 50/2016 sulla progettazione delle opere pubbliche / Campo, Orazio; Rocca, Francesco. - In: VALORI E VALUTAZIONI. - ISSN 2036-2404. - STAMPA. - 19(2017), pp. 3-9.
La parametrazione delle quantità fisiche nella definizione dei costi parametrici Il Decreto 50/2016 sulla progettazione delle opere pubbliche
Campo, Orazio
;
2017
Abstract
The purpose of the contribution is to open a debate aiming to identify, considering the new Public Procurement Code (Article 23 Legislative Decree n. 50/2016) which introduces the technical and economic feasibility, the role of the designer, of the planner and of the evaluator. An important innovation came with the introduction of art. 23 of the Legislative Decree n. 50/2016 (in this document Dlgs n. 50/2016). Thanks to this new regulation, the technical and economic feasibility project (replacing the preliminary draft and feasibility study) is further strengthened with regard to the technical and economic quality aspects. In order to prevent that the principles of the aforementioned regulation remain mere enunciations, it is necessary to define the construction of alternatives, the process of choices and the criteria for the evaluation of alternatives. Yesterday, starting from the feasibility study even if in an indicative way, the only need was to know the realizing cost of the work to provide the necessary financial coverage of the intervention. Today in addition, the costumer of the work needs to choose the best design solution based on the definition and selection of alternatives. Nowadays, more than in the past, the shortage of historical data and the difficulty of adjusting cost to peculiar features, often neglecting the possibility to consider economies of scale of their context, have led to excessive simplification of estimation with adverse consequences that can easily be imagined. It is worth remembering that the need for parametric estimations, both for public and private, for network works and punctuation ones, is increasingly emphasized, and is also divided into a number of typologies that can be used for the same building and for all intended use. Although influential, the DEI bulletin of the College of Architects and Engineers of Milan, which reports about 60 records of new constructions to be used as reference prices, is poorly adapted to respond to the variety of estimation queries. This shows clearly the need for an up-to-date database with a broad set of benchmark prices that it should be able to use for such diverse interventions. The bulletin is not enough to cover the requirements for the ex-ante cost analysis during technical and economic feasibilit y. A remarkable positive contribution could have come from the publication of standard costs, considered as a measure of what the cost should be. The Public Works Observatory (Osservatorio dei lavori pubblici) had been charged with drafting a proposal but nowadays in Italy any standardization has not been proposed yet. The contribution also contains the first contents of a research that is being carried out with regard to the determination of significant indicators for the economic and qualitative assessment of residential interventions.File | Dimensione | Formato | |
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