40 research outputs found
THE ITALIAN LEGISLATION ON PROJECT VALIDATION
No full textItaly, first in Europe, introduced mandatory validation in building public works: the first years experienced some issues leading to a general updating of the national legislation, differentiating the project verification from the project validation. The former is a formal stage of the construction process committed to the Public Authority (through the Overall Procedure manager), the latter can usefully be performed by an external authority and involves systematic project examination and contractual documentation monitoring. The research critically approaches the modifications in the last decades on public work legislation, from the aged Merloni Act to the current Presidential Decree no. 207/2010. The paper focuses on the improvements on public building in design stage because of the mandatory validation. It also describes how some weak points have been solved and those that are still present in the Italian legislation. Particular attention is given to construction works below a certain threshold of amount
Modelli di Partenariato Pubblico Privato per la gestione del processo di infrastrutturazione e riqualificazione urbana
No full textIn Europa i PPP si sono sviluppati nel settore trasporti, edilizia e attrezzature pubbliche e dell’ambiente.L’esperienza varia da settore a settore e da un Paese all’altro: molti Stati hanno un’esperienza limitata di PPP, o non ne hanno affatto. Quella delle Smart Cities e della riqualificazione urbana potrebbe essere una strada nuova ed efficace nel percorso verso la digitalizzazione che il nostro Paese sta intraprendendo con molta fatica e ancora in assenza di una visione integrata e sistemica.Partendo da questo auspicio, il seguente articolo cercherà di raccogliere e mettere a confronto due importanti casi applicativi: il primo si riferisce a 15 casi italiani distribuiti su tutto il territorio nazionale. Casi che rientrano in ambiti come il rinnovo, la riqualificazione e il recupero urbano. L’altro caso guarda invece le esperienze europee, in particolare quella orientale, legato alla trasformazione post-socialista di due aree centrali della città di Budapest
METHODOLOGICAL FRAMEWORK TO IMPROVE PPP PROJECTS
No full textThe Public–Private Partnership (PPP) plays a significant role in the construction industry. It is of special importance because of its weight in the global economy and the lack of funding for major projects. The PPP concept, as a procurement strategy, is successful only if the major stakeholders, namely the public sector, private consortium, and end–users are all satisfied with project outcomes. There have been reported cases of problems associated with the initial stages of the PPP process in terms of bidding costs and anticipated costs of construction and operation. The banks’ attention is currently centered on the promotors’ financial stability rather than on project quality. The key issue is to improve the efficiency for the whole building lifecycle. In this context, BIMM philosophy (not just Building Information Modeling but also Information Management) may be a powerful tool. In other words, is there room to put this concept in practice without jeopardizing service quality, innovation and efficiency? The answer to this question is explored in this paper. The use of Technical Sheets for PPP procurement like policy models may enhance systematic and integrated management of the whole building process. This technical framework allows one to collect project data, grouped into three areas: design, construction, and operation. In so doing, a Public Agency may assess project quality
Information flow for the integrated procurement management
No full textNow and again, in face of efficient authorities and good designers, the construction sector lacks
organic planning and organization, optimizing resources, costs, time and so forth. The lack of
unicity, uniformity and coherence of the process definitely represents an issue that affects the
efficiency of the results in the sector.
Considering this issue, the INNOVance project has established as purpose to create a database,
containing all the information that characterise the phases of the Building Process, easy and
shareable by all the actors involved. The development of an innovative information and
computerized system has a significant impact on all the life stages of the work: from the design
to its fulfilment, from the renovation to its management, from the classification of already
existing buildings or infrastructures to their eventual demolition.
The paper presents a unified and unambiguous classification system for all the information
relative to all the works in the construction sector. This system, based on the Sheets of the
Works is articulated at various levels of design. These sheets, in addition to their informative
nature, are at the base of a computer system, the INNOVance portal. They are useful to store,
access and share information on the work, for either traditional procurements and more
innovative ones, as the Private Public Partnership. In this case, they facilitate the
communication between actors of different nature, such as the Private Sector and Public
Administration
Modeling Human Motor Skills to Enhance Robots’ Physical Interaction
No full textThe need for users’ safety and technology acceptability has incredibly increased with the deployment of co-bots physically interacting with humans in industrial settings, and for people assistance. A well-studied approach to meet these requirements is to ensure human-like robot motions and interactions. In this manuscript, we present a research approach that moves from the understanding of human movements and derives usefull guidelines for the planning of arm movements and the learning of skills for physical interaction of robots with the surrounding environment.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Learning & Autonomous Contro
Data analysis of public private partnership in Italy. Control elements about the trend of the leasing in costruendo applied to a case study
No full textLAUREA MAGISTRALEIl partenariato pubblico-privato è stato sviluppato in differenti Paesi del mondo, in un contesto di radicali cambiamenti facenti riferimento alle riforme del public management. Tra i diversi Stati che hanno adottato questi programmi di riforma, vi sono delle caratteristiche comuni, una delle quali include la possibilità per l’ente pubblico di introdurre dei sistemi di gestione dal settore privato, quali: la privatizzazione, la decentralizzazione delle funzioni e delle responsabilità.
Soltanto dopo l’analisi dell’istituto della concessione è possibile lo studio del leasing in costruendo, una forma di PPP, sottolineando gli aspetti innovativi, come il design and built, rispetto alle tradizionali procedure di affidamento delle concessioni.
Introdotto in Italia con l’art. 160-bis del Codice degli Appalti, il leasing è uno strumento di locazione finanziaria a disposizione della Pubblica Amministrazione per il finanziamento privato delle opere di sua proprietà che consente di dilazionare l'investimento in più annualità.
Il lavoro intende analizzare le peculiarità e le caratteristiche del leasing applicandolo a un caso di studio: la realizzazione e progettazione esecutiva della scuola primaria per 500 alunni e centro unico di cottura mense scolastiche a Merate (LC).
Per fornire al lettore un’immediata presa di conoscenza della struttura della tesi, questa si divide sostanzialmente in due parti: parte introduttiva e parte analitica.
Nella prima, si contestualizza l’ambito in cui si vuole operare, quindi Partenariato Pubblico-Privato e leasing in costruendo. Si passa alla descrizione del caso di studio mettendo in luce la logica costruttiva a blocchi e le innovazioni tecnologiche adottate, in termini di qualità. Il passo successivo è stato quello dell’approfondimento critico del bando di gara, strutturato in maniera tale da indagare: i punti di aggiudicazione della gara, l’offerta temporale proposta dall’impresa vincitrice e il tasso di sconto.
Per quanto riguarda l’offerta temporale, questa è stata analizzata per poter trarre riflessioni a fronte del premio di accelerazione dell’1‰ dell’importo netto dei lavori per ogni giorno di anticipo guadagnato. Mentre il tasso di sconto è stato studiato in virtù del criterio di aggiudicazione dell’offerta economicamente più vantaggiosa e rispetto alle medie di quell’anno.
Nella parte analitica, dopo aver approfondito i concetti della pianificazione e programmazione (quindi gli strumenti della ricerca operativa come PERT, CPM, GANTT), del project management e dell’ingegneria dei costi, è stata impostata l’analisi del progetto. Il primo step è stato quello di un approfondimento preliminare con la disarticolazione progettuale.
La fase successiva è stata quella di redazione di tre crono programmi: del progetto, del progetto proposto dall’impresa e di quello del costruito. Da questi elaborati è stato possibile costruire le curve a S dei costi in modo da poterli confrontare e utilizzarli come base per l’analisi dell’Earned Value. Strumento utile per quantificare i costi e l’efficienza dell’impresa durante la costruzione dell’opera ed applicato a intervalli scanditi dalla data di emissione degli Stato Avanzamento Lavori.
Nell’ultimo step è stato messo in relazione gli effetti delle sospensioni lavori, dovute ad avverse condizioni meteorologiche, sul costo della manodopera e sugli oneri finanziari, calcolati sull’importo sostenuto durante lo sfasamento temporale che si è creato tra i S.A.L. previsti da Capitolato e con quelli effettivamente ottenuti.
L’elaborato termina con le conclusioni, che vagliano i risultati ottenuti.
Si conclude con un’appendice che riporta tavole di disegno e tabelle e con una bibliografia per avere una lista dei documenti consultati.The public–private partnership has been developed in different countries of the world, in a context of radical changes referring to reforms of public management. Among the several States which have adopted these reform programs, there are some common characteristics, one of which includes the opportunity for the public body to introduce systems management from the private sector, such as: privatization, decentralization of functions and responsibilities.
Only after analysis of the institution of license is possible to study the leasing in costruendo, a form of PPP, emphasizing the innovative aspects such as design and built, compared to traditional procedures for awarding of concessions. Introduced in Italy by Art. 160-bis of the “Codice degli Appalti”, it is a leasing tool available to the Public Administration for the private financing of the works of its property allowing investment to be deferred annuities more.
The work aims to analyze the peculiarities and characteristics of leasing applying it to a case study: the construction and executive design of the primary school for 500 children and unique centre of cooking school canteens in Merate (LC).
To give the reader an immediate understanding power of the structure of the thesis, this is divided into two basic parts: introduction and analytical part.
In the first, the area where the work wants to operate, is contextualized, public–private partnership and leasing in costruendo. It passes to the description of the case study highlighting the constructive logic block and technological innovations adopted in terms of quality. The next step was a critical deepening of the notice, structured so as to investigate: the award scores of the auction, time offer proposed by the winner company and the discount rate.
Regarding the time bid, this has been analyzed to draw considerations against the acceleration prize of 1 ‰ of the net of the work amount for each day of advance earned. While the discount rate has been studied under the award criterion the most economically advantageous and compared to the average of that year.
In the analytical part, after having studied the concepts of planning and programming (hence the tools of operations research as PERT, CPM, GANTT), project management and engineering costs, the analysis of the project was set. The first step was a preliminary study with the disarticulation design.
The next step was the drafting of three time schedules: the project, the project proposed by the company and what is built. From these is possible to draw up S-curves of the costs in order to compare them and use as basis for the Earned Value Analysis. Useful tool to quantify the costs and company’s efficiency during construction of the works and applied at intervals marked by the date of issuance of the “Stato Avanzamento Lavori”.
In the last step the effects of suspension of works, due to adverse weather conditions, has been related to labour cost and finance charges, calculated on the amount incurred during the time lag that is created between the S.A.L. provided in Specification and those actually obtained.
The paper ends with conclusions, which should evaluate the results obtained. It concludes with an appendix which contains drawings and tables and with a bibliography for a list of documents consulted
