Faculty of Civil Engineering

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Methodology for risk assessment at existing hydrotechnical tunnels
(2021-10)
Gacevski Vasko
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Nedevska Ivona
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Lazarevska Marijana
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Zafirovski Zlatko
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APPLICATION OF NETWORK PLANNING TECHNIQUE IN BUILDING CONSTRUCTION
(UNIVERSITY OF MONTENEGRO FACULTY OF CIVIL ENGINEERING, 2024-03)
Gacevski Vasko
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Lazarevska Marijana
The “plan” for the completion of any building is represented by a number of linked plans. Planning is the production of budgets, schedules, and other detailed specifications of the steps to be followed and the constraints to be obeyed in project execution. No matter the type of the project there is always a need for a plan. Construction projects are very complex in nature, so proper planning can ensure that things happen successfully. Modern planning can be implemented in every project stage with logical updating as the project advances. Construction planning can be oriented towards time and costs. These parameters are mutually related, and they should give a general or detailed view of the length of the construction, cash flow and in some cases the risks that may occur. The planning can be done with detailed review of the design with communication with the Investor and Contractor. Nowadays project scheduling and planning is usually done with software solutions which result in Gant charts, network diagrams, linear plans, etc. This paper shows time planning of parallel construction of three buildings, as part of a hotel complex, in Republic of North Macedonia using MS Project. The general purpose and goal of the analysis conducted in this paper is to show that adequate planning can significantly improve the overall construction process, resulting in lowering the total duration of the project, while respecting of the major milestones, smaller investment costs and better insight during the whole construction process.
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Organizational structure of construction companies in the function of their efficient operation
(UNIVERSITY OF MONTENEGRO FACULTY OF CIVIL ENGINEERING, 2024-03)
Kedioski Vlatka
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Lazarevska Marijana
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Gacevski Vasko
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Ristov Riste
The organizational structure of the construction company represents the structure and the management of the project team, goods and project resources. It is a fundamental aspect of project management that defines how activities are coordinated and controlled in order to achieve the planned project and company goals. Companies that are in construction business have organizational structures that are based on project management. Construction projects are usually complex, capital, unique and unrepeatable. Project management is the application of knowledge, tools, techniques, and systems to define, execute, measure, control, report and improve processes. This paper explains several aspects that should be considered when choosing the organizational structure of the construction company. Nine case studies of medium and large construction companies were analysed, where special emphasis is placed on the types of organizational structure used, their complexity, adaptability, integrative processes, control during work, description of processes and procedures, etc. The results of conducted analysis showed that 56% of the analysed companies use a composite organizational structure, while the remaining 44% use a functional organizational structure. Although the analysed companies implement "Projects", they very rarely use a project organizational structure, and when they do it is mostly for some large and complex projects that are being implemented outside our country. By understanding the importance of the organizational structure, when the right one is chosen, high management and project managers can improve the overall project outcomes and increase the likelihood of success.
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DETERMINATION OF CRITICAL PATH IN FUZZY NETWORK DIAGRAMS
(MASE, 2023-09)
Lazarevska Marijana
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Gacevski Vasko
The classical critical path method (CPM) is characterized by a deterministic expression of the duration of activities in the network plan. When it comes to planning projects in the field of construction, it is especially difficult, and in some cases even impossible, to accurately predict or determine the duration of certain activities. The occurrence of uncertainty and inaccuracy in the duration of construction activities entails an imprecise determination of the total duration of the project's implementation. Often, in practice, there is a need for modelling of risks and uncertainties. This need arises from the fact that sometimes, depending on the specificity of the conditions in which certain construction activities are carried out, they cannot be defined with a precisely determined duration. The time of execution of the activities is usually conditioned by the uncertainty of the factors that have an impact on the activity. This is precisely why there is a need to apply fuzzy numbers in the process of planning and project management. This paper presents one example of application of Fuzzy logic in the process of planning and management of construction projects. The duration of construction activities is being analyzed in conditions of uncertainty and risk. Planning of construction process in cases where the durations of the activities, as part of the project, are given as fuzzy numbers is especially convenient in conditions of uncertainty and risk due to the great subjectivity that occurs during their assessment. Furthermore, this paper deals with the application of Fuzzy network planning technique. An overview of different procedures and methods for calculation of earliest and latest duration time of project activities will be given, and one specific method will be applied for determination of the critical path in fuzzy network diagram. The results of the conducted analyses show that this method can provide more realistic results thus more reliable planning of the construction time for the whole project.
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Fuzzy Network Planning
(2022-04)
Lazarevska Marijana
;
Gacevski Vasko
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ASSESSMENT OF RISKS IN A ROAD TUNNEL CONSTRUCTION
(Faculty of Civil Engineering, 2022-07)
Gacevski Vasko
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Zileska Pancovska Valentina
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Lazarevska Marijana
Nowadays, new technologies, materials and machines enable the application of tunnel solutions even in the most difficult construction conditions. However, even with the great progress in tunneling, uncertainties and risks are always present in this field. In this direction, risks in tunnel construction should be appropriately analyzed and managed. This paper shows a methodology for risk assessment of road tunnels using combination of fault and event tree analysis. The fault tree is used for determination of the probabilities of previously estimated hazards and the event tree defines the consequences and the risks during a road tunnel construction in a quantitative form. The use of such approach can contribute to more successful tunneling project.
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ROAD INFLUENCE on THE ECOLOGICAL SAFETY OF THE ENVIRONMENT
(University of Montenegro, 2020)
Zafirovski Zlatko
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Ognjenovic Slobodan
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Nedevska Ivona
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Gacevski Vasko
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Methodology for Managing Railway Projects
(Springer, 2024)
Zafirovski Zlatko
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Nedevska Ivona
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Gacevski Vasko
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Ristov Riste
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Ognjenovic Slobodan
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Application of AHP Method for Multi-criteria Evaluation of Variants for New Railway Route
(Springer, 2024)
Nedevska Ivona
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Zafirovski Zlatko
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Ristov Riste
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Gacevski Vasko
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AN APPROACH FOR RAILWAY PROJECT MANAGEMENT
(Department of Civil Engineering and Geodesy, Faculty of Technical Sciences, Novi Sad, 2023-11)
Zafirovski Zlatko
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Nedevska Ivona
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Gacevski Vasko
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Ristov Riste
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Ognjenovic Slobodan
This paper aims to solve this problem, which has recently become more common in railway projects. The key is in a planned approach and organization from the beginning of the project, which the candidate considers by elaborating a Methodology for the construction of the site in the form of a document. This methodology solves all the above and helps lead the project from its beginning to the end with a positive result. The scope of the methodology for the construction of a facility includes several scientific disciplines directly related to the realization of the facility, such as law, economics, ecology, quality management, construction, etc. Therefore, it should cover all matters in these areas and provide solutions and courses of action at the beginning and in the development phase of the site to adapt to possible needs and to be finalized. The conclusion is that the application of such a Methodology for the construction of the site is necessary, or it could be freely said that it is mandatory.

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