Grzegorz Śladowski

The paper discusses the process of restoration of the outer courtyard on Wawel Hill, which was part of a project co-funded by the European Union under the “Infrastructure and Environment” programme. The location and specificity of the restoration works generated many technological and organisational problems during their implementation (most of which could not have been predicted earlier), which in turn determined the different approaches and concepts available for solving them. The article is therefore a kind of case study, which demonstrates the specific implementation al problems associated with this project, as well as identifying the mistakes to be avoided, on one hand, as well as to point to concepts which are worth repeating.

Sustainable development is a method of resource management, the effect of which not only meet the needs of the present but also of future generations. Historical monuments as part of national heritage are a resource, which is protected not only in the sense of its cultural value but also has a potential for the creation of socio-economic values. The process of extending the life cycle of a historic building is associated primarily with the analysis of the options for its conversion in the light of various criteria, many of which have a fuzzy character. The aim of the paper regards the proper selection and also description of the criteria for assessing conversion options for historic buildings in the context of sustainable development.

Background. The vast majority of historical buildings no longer serve its original function because that function is no longer needed today. This fact is the reason why many of the abandoned monuments are subject to the process of degradation. A chance to extend the life cycle of historical buildings is their reuse, which is made possible thanks to adapting these facilities to perform new functions. Polish regulations lack a comprehensive, multi-criteria approach to the selection of variants of adaptation of historical buildings despite the practical needs in this area.

Research aims. Fuzzy inference system assisting the choice of a variant of adaptation of historical buildings presented in this article meets the above requirements.

Methodology. In the analysis, an expert inference system has been developed on the basis of inference rules database by taking into account the fuzzy logic.

Key findings. The developed expert fuzzy inference system is designed primarily for decision-makers from the so-called public sector. The choice made by the above mentioned concerning the use of a historical building will result not only from the analysis of expenditures that need to be incurred for the process of adaptation, but also from the benefits which stem from the idea of sustainable development that can be achieved at the same time.

The paper addresses the possibility to utilize alternative-decision networks to model and analyze technological and organizational variants of building processes [1]. The undetermined structure of such networks makes it possible to simultaneously model any given number of variants of the scrutinized project and, as a result of the network’s analysis, to select the solution (variant) which is optimal within the set criterion. The paper attempts to broaden thevertex set of the subject network by adding two logical formulas on the side of the peak entrance: namely „and” and „or” to make the modeling of certain technological and organizational relationships of a construction enterprise easier. Introducing new vertices into the network required extending the mathematical model used to determine the optimal technological and organizational variant of the analyzed enterprise.