University of Ljubljana

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    3400 research outputs found

    The analysis of the potential treatment of terrestrial material surplus in slovenian Istra

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    The thesis discusses the issues in handling excess excavated material in the region of Slovenian Istria. The reason for the studied subject was the planning of the trunk road Koper - Dragonja, for which a study of excavated material handling was conducted. In this study, the main obstacle in defining suitable locations for disposal sites of excess excavated material turned out to be encroachment on water and waterside land as well as erosion and landslide areas, which are governed by the Waters Act (ZV-1, 2002). In fact, one or more water land areas – predominantly or torrential nature – were located on almost all potential locations for natural material disposal sites. In the thesis, we discuss the issue of excavated material disposal site management and planning on water and waterside land as well as erosion and landslide areas. Initially, we presented the issue of handling excess excavated material, analysed the slope processes in Slovenian Istria and the statutory requirements related to managing and planning excavated material disposal sites. We performed and analysed the interviews with selected representatives of the expert public, analysed and compared three related interventions of managing and planning excavated material disposal sites, and we also conducted a spatial and technical analysis of the excavated material disposal site test example in the region of Slovenian Istria in four design variations. With the help of asked hypothesis and testing of those we have shown that the induction of excavated material disposal sites on water and waterside land as well as erosion and landslide areas should be based on analytical planning approach. Regulations should determine clear procedures and necessary permissions, which would at respecting the protection regimes, however, allow reflection on alternatives to landfill regulation of excavated materials in such areas

    Drip irrigation design for hopfield as a part of a large irrigation system

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    The hop industry was striving for stable long-time production in the eighties of the 20th century and began to emerge desire for irrigation hopfields and the construction of large irrigation systems in the Lower Savinja Valley. The former embodiment has been designed on the base of drum rolomats, which are known as large water users. Newer technology is drip irrigation, which ensures the rational use of water and its use is gaining over the years. Drip irrigation system for irrigation of hopfield, which is connected to an existing large irrigation system was designed in the study based on the technical and technological information. We conducted analyses of hydraulic parameters of irrigation equipment with HydroCalc software and irrigation schedules using CROPWAT 8.0 software.\ud We have found that irrigating within a large irrigation system allows the user only to irrigate in the specific time interval; since only in this case large irrigation system could provide sufficient flow and pressure of water at water hydrant. Therefore we can conclude that hydraulic analyses are necessary to enable effective operation of the system

    Drainage systems and their influence on water regime

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    Design and selection of proper drainage system must include a variety of factors such as climatic conditions, evaporation, soil characteristics and ultimately planted crops. Based on the individual complex calculations that take into account all these parameters, appropriate depth and spacing of drainage pipes or ditches is set for effective surface water discharge and groundwater level regulation. \ud An overview and diversity of systems and their characteristics are presented in the theoretical part of the thesis. At the same time their advantages and disadvantages are presented. For the purpose of drainage system planning and analysis of individual system influence or effectiveness on water regime in this thesis, we used computer model DRAINMOD to estimate their influence on the selected test area. The result of multiple model simulations with different parameters is the most appropriate depth and spacing of drainage. In addition to the hydrological model DRAINMOD offers also other options for drainage system simulation. Salinity, nitrogen and crop\ud yield are worth mentioning.\ud On account of DRAINMOD models diversity and a wide range of available parameters, program turns out to be extremely useful and technically advanced tool for carrying out a concrete plan of the drainage system. The most suitable choice for testing surface due to proximity of river Sava waterway is drainage system in combination with irrigation

    Conceptual Solution for the collection and treatment of waste water in the local community of Šentlambert - Municipality of Zagorje ob Savi

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    Graduation thesis deals with theorethical part of draning and cleaning of wasterwater. Its goals are alternative solutions for draning and cleaning of wastewater in local community Šentlambert. Treated solutions are draning and cleaning of wastewater from whole local communitiy in one waste water treatment plant, common wastewater treatment plants for every sattelment and individual waste water plants for every building. Evalvation of solution is made by economics and environmental performance

    Calculation and cartographic presentation of geometric center of Slovenia

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    Graduation thesis discusses calculation of geometric center for a chosen area with examples from abroad and Slovenia. Presented and compared are several methods for calculating or determining the geometric center with associated conditions for area and data selection. The preliminary results are calculated, compared and cartographically displayed coordinates of the geometric center of Slovenia obtained by using some of the described methods with the integration of different areas and data. The final results of the thesis are coordinates of the geometric center of Slovenia calculated with the use of the analytical method where the border of an area consist of a polygonal lin

    Organisation of construction company – case study

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    Companies working in the construction industry are constantly faced with unique situations. The construction process of the finished product – the construction work – requires collaborative efforts of various participants. The main key to a successful construction company is having enough knowledge of the current market situation and being able to adapt your working methods in accordance with market forces on a continuous basis. Due to the fragmentation of companies in the construction industry, a network system of organisation of individual operators, who share the common goal of carrying out construction projects, is being actively implemented. This system of organization leads to the specialization of individual construction companies, allowing greater efficiency in the products or services offered by the company.\ud Based on the research of a practical example, the goal of this thesis is to point out the different organizational characteristics of construction companies related to the efficiency of work and good operational results. Furthermore, this thesis seeks to analyze the construction engineering company GES in terms of organizational models and to assess the possibilities for improvement of the current situation as well as discuss the nature of partnerships with subcontractors, the manner of selection of subcontractors, and the advantages and disadvantages of working with permanent business partners. Lastly, this thesis aims to examine key contractual terms that must be respected by both the contractor and the subcontractor for the joint execution of the project

    Measuring turbidity in water courses

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    The purpose of this diploma thesis is to present the methods for measuring turbidity in watercourses and review the literature that estimates the amounts of suspended material. The first part of the thesis begins with a theory on the origin of suspended material. In addition, methods for measuring suspended material in watercourses and basic equations for determining suspended solids are presented. The second part analyzes the discharge and suspended material data from the Dvor gauging station on the Gradaščica river. This data can help us measure the content of suspended material in the watercourse, either in kilograms or tonnes. We can then use the calculated values to draw graphs which show the correlation between the volume of the discharge and the content of suspended material. Finally, uncertainty and equipment error are calculated

    Calibration of hydraulic models and estimation of water losses in pipe networks

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    The hydraulic model of a real water distribution system is a powerful tool which helps us understand, simulate and predict unknown parameters based on actual conditions. In the thesis, we presented a practical example of macro calibration procedure, which consists of analysing model calculations, finding errors and adjusting unknown parameters, with the aim of achieving a match between measured and computed hydraulic parameters. After achieving an improved hydraulic model, we also performed estimation of water losses based on minimum night flow calculations

    Energy analysis of conceptual design of wooden multi-apartment modular building

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    Growth analyses of the world population show, that in the next 30 years, the population of the planet will increase by 20 %, which means that demand for residential units will also increase. The thesis presents a new concept of constructing environmentally friendly wooden multiapartment modular building as an alternative to energy consumptive and environmentally unfriendly classical building. The paper deals with the construction of energy efficient wooden multi-apartment modular building. We constructed construction elements and with programs URSA 4 and THERM 7.3 verified their compliance with the current Regulations on energy efficiency in buildings PURES 2010 and Technical guideline TSG-1-004. With THERM we will analyze the most critical intersections that occur in the building envelope of designed building. The results will be used to calculate the energy balance of the building. The energy balance will be calculated with program URSA 4. The results will be verified according to criteria laid down in the Regulations on energy efficiency in buildings. With results we want to show, that with the proper approach to constructing the building envelope and the supporting system, an effective modular system can be created

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