Faculty of Civil Engineering

Permanent URI for this communityhttps://repository.ukim.mk/handle/20.500.12188/4

Browse

Search Results

Now showing 1 - 10 of 36

Some of the metrics are blocked by your
consent settings
Methodology for risk assessment at existing hydrotechnical tunnels
(2021-10)
Gacevski Vasko
;
Nedevska Ivona
;
Lazarevska Marijana
;
Zafirovski Zlatko
Some of the metrics are blocked by your
consent settings
APPLICATION OF NETWORK PLANNING TECHNIQUE IN BUILDING CONSTRUCTION
(UNIVERSITY OF MONTENEGRO FACULTY OF CIVIL ENGINEERING, 2024-03)
Gacevski Vasko
;
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.
Some of the metrics are blocked by your
consent settings
Organizational structure of construction companies in the function of their efficient operation
(UNIVERSITY OF MONTENEGRO FACULTY OF CIVIL ENGINEERING, 2024-03)
Kedioski Vlatka
;
Lazarevska Marijana
;
Gacevski Vasko
;
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.
Some of the metrics are blocked by your
consent settings
DETERMINATION OF CRITICAL PATH IN FUZZY NETWORK DIAGRAMS
(MASE, 2023-09)
Lazarevska Marijana
;
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.
Some of the metrics are blocked by your
consent settings
Fuzzy Network Planning
(2022-04)
Lazarevska Marijana
;
Gacevski Vasko
Some of the metrics are blocked by your
consent settings
Fuzzy Engineering
(2022-04)
Lazarevska Marijana
;
Gacevski Vasko
Some of the metrics are blocked by your
consent settings
Procedures for risk analysis and management in tunnelling projects
(EDP Sciences - Web of Conferences, 2019-12)
Zafirovski Zlatko
;
Gacevski Vasko
;
Lazarevska Marijana
;
Ognjenovic Slobodan
The concept of risk analysis and management has a big impact and application in various branches of society. Today in civil engineering, especially in infrastructure projects this concept represents a serious matter that should not be avoided or delayed. There are different approaches and definitions for a risk, but it is important every problem to be reviewed separately. In tunneling the uncertainties and risks are always present, so appropriate measures and management should be considered and implemented.
Some of the metrics are blocked by your
consent settings
RANKING OF TOTAL TIME RESERVES FOR DETERMINATION OF THE CRITICAL PATH IN FUZZY NETWORK PLAN
(UNIVERSITY OF MONTENEGRO FACULTY OF CIVIL ENGINEERING, 2024-03)
Lazarevska Marijana
;
Gacevski Vasko
;
Zafirovski Zlatko
The Critical Path Method, as a method of network planning, is used in the process of planning and control of complex projects from various fields. For their successful implementation, a clear determination of the duration of each project activity is necessary. However, in construction sector it is very difficult to fulfill this requirement, because the realization of many activities is accompanied by a certain degree of uncertainty and risk. Since construction projects are characterized by uniqueness and unrepeatability, there are often no available historical data for a clear and precise determination of the duration of project activities. Given that, the duration should be predicted by expert and experienced persons, who, in the conditions of unique influencing factors and facing many inaccuracies, should define their decisions during the whole process of project management. Due to the shortcomings of classical planning methods, related to the calculation of the duration of project activities, which does not offer the possibility of modeling complex construction projects, there was a real need for the definition and implementation of new concepts of planning. As an alternative way to model uncertainty and risk, the fuzzy concept was introduced in the planning process, with which the durations of project activities are presented through fuzzy numbers. This fundamental approach, which is based on the application of fuzzy theory, enables advanced and successful modelling of real situations and projects, which overcomes the shortcomings characteristic of classical planning methods. This paper gives an overview of one practical example of application of fuzzy logic in the planning process. One method of ranking fuzzy numbers has been applied for calculation of the earliest and the latest fuzzy time of project activities, and the total time reserves, in order to determine the critical path in fuzzy network diagrams.
Some of the metrics are blocked by your
consent settings
APPLICATION OF PRECEDENCE DIAGRAMMING FOR PLANNING OF A LOCAL ROAD RECONSTRUCTION
(UNIVERSITY OF MONTENEGRO FACULTY OF CIVIL ENGINEERING, 2024-03)
Lazarevska Marijana
;
Gacevski Vasko
;
Zafirovski Zlatko
Planning is essentially a way of mentally presenting projects in the future, and it is implemented through the creation of models (graphical, mathematical, etc.) through which the behaviour of the future real project is simulated in a changing environment. It implies the implementation of analyses with included risk and uncertainty for correct decision-making during the implementation of projects. In modern construction, the realization of any more serious project cannot be imagined without the application of quality planning and management methods. Network models are an example of the most commonly used methods for planning of the implementation of complex and longterm projects. The most commonly used network models in construction are: Critical Path Method (CPM) and the PERT method (Project Evaluation and Review Technique). They are used for analysis of the project time duration, cost and resources. Both methods use a graphical representation of the project through an appropriately oriented network model composed of basic elements such as: activities, events, durations, costs, resources etc. This paper gives an example of the application of Precedence diagramming for planning of a local road reconstruction, as an easy approach for determination of the total time duration of the project that gives a clear overview of the technology of construction in accordance with the general and specific conditions of the project and its environment.
Some of the metrics are blocked by your
consent settings
ROAD SAFETY INSPECTION IN THE FUNCTION OF DETERMINING UNSAFE ROAD LOCATIONS
(UNIVERSITY OF MONTENEGRO FACULTY OF CIVIL ENGINEERING, 2024-03)
Ristov Riste
;
Ognjenovic Slobodan
;
Zafirovski Zlatko
;
Gacevski Vasko
;
Nedevska Ivona
A road safety inspection (RSI) is a systematic and independent assessment of the parameters of road safety projects with the aim of preventing traffic accidents and creating safer roads for all road users. It covers all road users, not only car drivers, but also pedestrians, cyclists, motorcyclists, trucks, buses and public transport vehicles, and considers all road safety stakeholders (road users, road maintenance, vehicle , weather conditions, etc.). Using the RSI procedure and analyzing the current state of traffic safety on the section of the regional road R1106 (from the intersection with Boris Trajkovski Blvd. to the intersection for the local road to the Church of St. Dimitrija), as well as the AADT data, conducted traffic accidents, and the previously performed inspection with a implemented project to increase traffic safety, it can be seen that the situation is not at a satisfactory level. It is necessary to take measures that will contribute to the improvement and increase of safety, taking into account all the influential risks included in the two subcategories: objective - which are related to the objective factors (environment) and subjective - which are conditioned by the individual ability, properties, characteristics, motivation, understandings, attitudes and prejudices of the person. The obtained results are compared with the initially carried out inspection of the road to increase safety and the effects of the already carried out reconstruction to improve traffic safety, which was carried out in 2014. Based on this analysis and comparison, dangerous locations will be detected, i.e. reasons why they are unsafe, and conclusions and recommendations will be made that can serve as a direction for improving the safety of other road sections.

Faculty of Civil Engineering

Browse

Filters

Settings

Sort By

Results per page

Search Results