In the economic evaluation of megaprojects it is very important to take into account many aspects. Usually the most important aspect is connected with investment and operation costs and their possible overflows and the fulfillment of time period intended for the project. But it is necessary also to monitor impacts of the projects on their surroundings. The HDM-4 model developed by University of Birmingham takes into account impact of transport infrastructure projects in the form of changes in the time consumption, changes in operation costs for vehicles, social costs connected with car accidents and newly impacts on environment. But it is possible to calculate also with other impacts, e. g. impact on economy of related areas, barrier effect caused by highways and motorways, sprawling connected with better availability of urban area, etc. The main objective of the paper is to discuss, which of possible social-economic impacts could be taken in evaluation of particular megaprojects into account and which it is useful or not useful to begin to project into economic evaluation. Very important it is also to discuss the available or new methodology of the projection of specific impacts into the project evaluation

Planning maintenance costs is not an easy task. The amount of costs depends on many factors, such as value, age, condition of the property, availability of necessary resources and adopted maintenance strategy. The paper presents a selection of models which allow to estimate the costs of building maintenance, which are then applied to an exemplary office building. The two of the models allow a quick estimation of the budget for the maintenance of the building, following only indicative values. Two other methods take into account the change in the value of money over time and allow to estimate, assuming the adopted strategy and assumed costs, the value of the current amount allocated to the maintenance of the building. The final model is based on the assumptions provided for in Polish legislation. Due to significant simplifications in the models, the obtained results are characterized by a considerable discrepancy. However, they may form the basis for the initial budget planning related to the maintenance of the building. The choice of the method is left to the decision makers, but it is important what input data the decision maker has and the purpose for which he performs the cost calculation.

This article deals with the partial outputs of large-scale infrastructure project risk assessment, specifically in the field of road and motorway construction. The Department of Transport spends a large amount of funds on project preparation and implementation, which however, must be allocated effectively, and with knowledge of the risks that may accompany them. Therefore, documentation for decision-making on project financing also includes their analysis. This article monitors the frequency of occurrence of individual risk factors within the qualitative risk analysis, with the support of the national risk register, and identifies dependent variables that represent part of the economic cash flows for determining project economic efficiency. At the same time, it compares these dependent variables identified by sensitivity analysis with critical variables, followed by testing the interaction of the critical variables’ effect on the project efficiency using the Monte Carlo method. A partial section of the research was focused on the analysis of the probability distribution of input variables, especially “the investment costs” and “time savings of infrastructure users” variables. The research findings conclude that it is necessary to pay attention to the setting of statistical characteristics of variables entering the economic efficiency indicator calculations, as the decision of whether or not to accept projects for funding is based on them.

The paper deals with economic connections in the complex view of a building life cycle. Approaches for considering individual benefits and costs occurring in connection with building construction, use and demolition are characterized here. The basic approach is the BLCC (Building Life Cycle Costs) method, subsequently supplemented with the LCA (Life Cycle Assessment) method that also provides for environmental impacts. The WLC (Whole Life Costs) method is derived at the end of the paper, comprising all relevant current and future costs and benefits in the building efficiency assessment.

The paper deals with the issue of evaluation of socioeconomic impacts of occurrences emerging from railway infrastructure. The presented research results form part of a broader research subject focusing on the evaluation of the socioeconomic benefits of projects for the implementation of measures aimed at increasing the safety and reliability of railway infrastructure. The research topic addresses a part of the evaluation of railway infrastructure project efficiency within its life cycle using the cost–benefit analysis method. The methodology is based on the description and definition of input variables that are essential for the process of evaluating socioeconomic impacts. It is followed by another important step, which is the analysis of the categories and the number of occurrences, separately, for regional and national lines, and, further, the data is sorted according to whether occurrences emerge at stations or on a wide line. The result of the presented research is an overview of the calculated values of the expected socioeconomic impacts of partial occurrences according to the categories related to the year of operation on the railway infrastructure and the unit of measure. The research team carried out an inquiry into the annual impacts of the subcategories of occurrences related to one railway station and one kilometer of wide line, e.g., for national lines, the impacts of €2922.72/station/year and €41.67/km of wide line/year were determined. The results of the presented research represent important and necessary inputs for the next phase of the research topic, i.e., the evaluation of the socioeconomic benefits of projects increasing the safety and reliability of railway infrastructure.

» Articles | Agricultural Journals