Streszczenie: Metoda DEMATEL sprawdza się powszechnie w roli efektywnego narzędzia do analizy prz... more Streszczenie: Metoda DEMATEL sprawdza się powszechnie w roli efektywnego narzędzia do analizy przyczynowoskutkowej procesów, ujmujących czynniki o zarówno łatwo, jak i trudno mierzalnej naturze. Jej rozwój spowodował jednak poszerzenie możliwości aplikacyjnych. W pracy przedstawiono możliwości zastosowania metody DEMATEL w budownictwie. Zilustrowano je przykładami obliczeniowymi dotyczącymi analizy łańcuchów przyczynowoskutkowych oraz wielokryterialnej analizy decyzji.
Construction scheduling deals with the decisions which can affect the feasible sequence of constr... more Construction scheduling deals with the decisions which can affect the feasible sequence of construction activities, the selection of alternative execution modes for the activities and the positioning of the construction in time. Effects of these decisions can be evaluated by means of specific schedule evaluation criteria. However, the peculiarity of construction in civil engineering causes that the real effects of the construction also depend on the influence of the surrounding environment. For example, construction processes are sensitive to adverse weather. Poor weather influences the actual performance of construction activities. The performance of the activities influences the performance of the whole construction project. Thus, the performance of whole construction project is also influenced by bad weather. Considering the influence of adverse weather is therefore indispensable when preparing a reliable construction schedule. Note, that the effects of poor weather on actual construction performance can be limited by the careful choice of the activity sequence, construction time lines, and the execution modes for various activities. The approach is presented, in this paper therefore provides the appropriate sequence of construction activities, related starting date and the allocation of execution modes to the activities in order to make construction schedule less sensitive to inclement weather.
Construction projects consist of numerous technological operations. The operations can be usually... more Construction projects consist of numerous technological operations. The operations can be usually arranged in a considerable number of alternative ways satisfying induced technological order. Applied arrangement of operations defines project structure. A project structure influences results of construction project schedule optimisation. Identification of adequate structure for a construction project is therefore important for obtaining the best possible schedule. Effects of construction project execution depend on influence of surrounding environment. It is therefore necessary to include local conditions in a building site to derive a reliable construction project schedule. A problem of bi-criteria time-cost optimisation of a construction project structure is dealt with in the paper. Presented optimisation approach includes sensitivity of technological operations to adverse local weather conditions. It is capable of estimating robust Pareto-efficient structures and corresponding schedules for a construction project. Appropriate allocation of alternative execution modes to technological operations satisfying limited availability of manpower, building materials and equipment is applied in this regard.
Streszczenie: Metoda DEMATEL sprawdza się powszechnie w roli efektywnego narzędzia do analizy prz... more Streszczenie: Metoda DEMATEL sprawdza się powszechnie w roli efektywnego narzędzia do analizy przyczynowoskutkowej procesów, ujmujących czynniki o zarówno łatwo, jak i trudno mierzalnej naturze. Jej rozwój spowodował jednak poszerzenie możliwości aplikacyjnych. W pracy przedstawiono możliwości zastosowania metody DEMATEL w budownictwie. Zilustrowano je przykładami obliczeniowymi dotyczącymi analizy łańcuchów przyczynowoskutkowych oraz wielokryterialnej analizy decyzji.
Construction scheduling deals with the decisions which can affect the feasible sequence of constr... more Construction scheduling deals with the decisions which can affect the feasible sequence of construction activities, the selection of alternative execution modes for the activities and the positioning of the construction in time. Effects of these decisions can be evaluated by means of specific schedule evaluation criteria. However, the peculiarity of construction in civil engineering causes that the real effects of the construction also depend on the influence of the surrounding environment. For example, construction processes are sensitive to adverse weather. Poor weather influences the actual performance of construction activities. The performance of the activities influences the performance of the whole construction project. Thus, the performance of whole construction project is also influenced by bad weather. Considering the influence of adverse weather is therefore indispensable when preparing a reliable construction schedule. Note, that the effects of poor weather on actual construction performance can be limited by the careful choice of the activity sequence, construction time lines, and the execution modes for various activities. The approach is presented, in this paper therefore provides the appropriate sequence of construction activities, related starting date and the allocation of execution modes to the activities in order to make construction schedule less sensitive to inclement weather.
Construction projects consist of numerous technological operations. The operations can be usually... more Construction projects consist of numerous technological operations. The operations can be usually arranged in a considerable number of alternative ways satisfying induced technological order. Applied arrangement of operations defines project structure. A project structure influences results of construction project schedule optimisation. Identification of adequate structure for a construction project is therefore important for obtaining the best possible schedule. Effects of construction project execution depend on influence of surrounding environment. It is therefore necessary to include local conditions in a building site to derive a reliable construction project schedule. A problem of bi-criteria time-cost optimisation of a construction project structure is dealt with in the paper. Presented optimisation approach includes sensitivity of technological operations to adverse local weather conditions. It is capable of estimating robust Pareto-efficient structures and corresponding schedules for a construction project. Appropriate allocation of alternative execution modes to technological operations satisfying limited availability of manpower, building materials and equipment is applied in this regard.
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