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The role of the librarian in the construction of the repository - a challenge or necessity?\ud
Full text linkForce-based seismic design of reinforced concrete buildings for target reliability
Full text linkA new methodology for the calculation of the risk-targeted design peak ground acceleration has been proposed. The closed-form solution of this methodology provides a useful insight into the relationships between seismic risk, the return period of the design earthquake, the strength and deformation capacity of the building. It can thus provide a basis for the derivation of risk-targeted behaviour factor, which can be used to explain the so-called empirical component of the conventional behaviour factor. The first part of the dissertation clearly shows that, in order to achieve adequate collapse safety of new buildings, the value of the behaviour factor should be much smaller than the product of overstrength and ductility reduction factor. This new definition of the behaviour factor thus allows for more rational decisions about what the adequate values of the behaviour factor are, and better estimations of the behaviour factor for a selected collapse risk. This was demonstrated for the case of a reinforced concrete frame building with prescribed ductility class medium. It is demonstrated for the building in question that the behaviour factor pursuant to Eurocode 8 nearly corresponds to a target collapse risk of 5∙10-5. The second part of dissertation explores the impact of design factors on the seismic response of structures. It was shown for the analysed structures that those design factors, which are usually derived upon extensive consideration by the designer, often only have a small impact on the seismic performance of a structure. On the other hand, the application of simple design factors (e.g. design values of the material characteristics) can significantly improve the calculated seismic response of a structure, even though some designers are not even aware of these design factors. This suggests that standards dealing with earthquake-resistant design of buildings could perhaps be modernized. In the last part of the dissertation, some possible approaches to the calculation of design shear forces were examined based on target reliability and nonlinear dynamic analysis. It was found that the shear failure of columns has to be prevented in order to ensure that the impact of this type of failure is neglectable in the context of collapse risk. This confirms the adequacy of the capacity design approach. However, it is discussed that shear failure of columns designed in line with Eurocode 8 is sometimes prevented due to minimum requirements for shear reinforcement and not due to the design shear force, which is estimated on the basis of the capacity design approach. Hence, a methodology was proposed for the estimation of design shear forces based on incremental dynamic analysis. It was shown that merely a few carefully selected ground motions can suffice to estimate the maximum shear forces in columns
Development and testing of programe VODU for water hammer computation in pipelines of constant cross section
Full text linkSubject of the thesis is water hammer in pipe of constant diameter. The phenomenom is solved using software VODU with the method of characteristics. In the beginning of the thesis there are derivations which we need for calculating the hammer. Equation of continuity and dnymaic equation adapted for one dimension along the length of the pipe are used for calculation.\ud
Following the equations there is description of the computer code which is used in the software since it was, for the purpose the thesis, transformed from Basic to Visual basic. User interface and an example of software usage are also shown.\ud
In the last part thesis analyses impacts of different parameters on the size of over- and subpressures. It turns out that we can decrease the size of the water hammer in the most impactful way with slower closing of the valve
Flood hazard modeling on river outfall stretches, based on silting up processes
Full text linkIn the dissertation the flooding and silting up process of the inundation area of downstream sections of the meandering river were studied. The travel zones in the flood-plain forming during the travel time of the flood-wave were determined by using 2D hydraulic modelling. The flooded status of the inundation area was compared during the flood peak and the falling limb of the flood wave in order to get information about the changes of the river bed and the silting up of the inundation area. The results of different research methods were compared (hydraulic modeling, geomorphological methods, sedimentological analyses, dating of the layers in the sediment sample) to evaluate the possible effect of the changes of discharge on the flood hazard due to the climate change. The geomorphological characteristics of the meandering outfall river sections were studied. Morphometric parameters and the trend of long-term development of the meanders and the river were evaluated
Reconstruction of intersection in the village of Jurjevica and the proposal of the bypass freight route on the section Jurjevica - Kot pri Ribnici quarries
Full text linkMy thesis studies the intersection in Jurjevica village, which is not constructed very well at the moment. I also research a possible bypass freight route between Jurjevica and two quarries that would avoid Kot pri Ribnici village. At first I describe the existing intersection and the road, which currently leads to the quarries. Then I calculate the traffic loads, acquired by traffic count, and introduce a\ud
theoretical basis for the design of junctions and roundabouts. I present three different methods of\ud
reconstruction for the intersection. The first one is a rearrangement of the intersection with an introduction of the left turn lane. The second one is the rearrangement of the intersection into roundabout and the third one the rearrangement of the intersection into roundabout with bypass. For the second and third method I also check the level of traffic loads at the Austrian method. Then I\ud
present the bypass freight route between Jurjevica and quarries. In the end of my thesis the annexes with all rearrangement variants of the intersection and the plan of the bypass freight route are given
Energy rehabilitation of building envelope using prefabricated wooden modules in the case of nursing home Dom Petra Uzarja
Full text linkThis master thesis is a critical assessment of the current state of the Dom Petra Uzarja nursing home and an optimal proposal for the renewal that will satisfy not only the energy, but also the architectural aspect. In the first step, we conducted a comprehensive research review in the field of building renovations, focusing on works related to the technological and architectural solutions in the renovations of retirement homes. We made a building physics analysis of the existing construction in the KI Energija 2014 computer program and evaluated the buildings critical points. In the second step, we performed a parametric analysis of the identified critical points on the level of a typical living space, using the programs KI Energija 2014, Window 7.4, Therm 7.4 and Comfen 5. We varied the properties and surfaces of the transparent and non-transparent parts of the façade, until we came to an adequate conclusion, acceptable in terms of the aesthetic criteria and valid regulations. Based on the results obtained, we produced a proposal for an optimal prefabricated wooden façade module. We drew a typical façade zone and made a 2D analysis of its thermal field. In the third step, we presented concrete solutions for the entire building and calculated the energy consumption of the new building. In the closing part, we introduced the final findings and substantiated the chosen technical solutions
Development of 5D BIM for commercial-parking building project
Full text linkPrice and time are in the construction business very important factors. Recently is very popular to use BIM technology to control them both. From the well-built 3D BIM model we can be obtain information of the location, quantity and geometry of items. Then with adding the fourth dimension to the model, time that is needed to carry out the elements is added. When fifth dimension is added to the model we add pricing of the elements.\ud
The goal of my thesis was building such a model. For reference I showed building a 5D BIM model on a commercial-parking building with three floors of parking and one floor of commercial spaces. Architecture of the building I made in ArchiCAD (3D BIM). Then in program Synchro (4D BIM) I made time schedule. After additional measures in the program CostX and determining the values of the elements I made a financial plan fort the building (5D BIM)
The outline scheme for closing the waste landfill Ostri vrh in Logatec
Full text linkThe present Master's thesis seeks to present the landfill Ostri vrh in Logatec, its current function and\ud
its possibilities after closing it. The landfill does not have a valid environmental usage permision\ud
anymore therefore it is in the closing process. The landfill was established in year 1977 when the issue\ud
of waste management was not yet so familiar and developed. Situation in the field of waste\ud
management has improved significantly since then, mainly due to the implementation of appropriate\ud
environmental policies. Today much more waste is reused or recycled and this leads to empty landfills\ud
across the country. The same situation is in the landfill Ostri vrh. As a starting point basic concepts\ud
and definitions in the field of waste management and the regulatory framework that applies to the\ud
scope of the European Union and Slovenia is presented. It is followed by an insight into the impact of\ud
the landfill on the environment and its status quo. Second part of the thesis is focused into presenting\ud
conceptual solution for the landfill closing and the possibility of technological processes for\ud
purification of leachate. One of the possible solutions is complete closure of the landfill as defined by\ud
the Regulation on the waste landfills. That would mean construction of the sealed cover in order to\ud
isolate it from its surroundings. System of pumps would create a closed loop of the leachate, so we\ud
would not need an independent wastewater treatment plant. In the event that leachate would not be\ud
returned to the landfill, it would be necessary to clean it with means of membrane technology, physicchemical\ud
or biological processes. Furthermoew, the thesis also presents a method of forced ventilation\ud
and energy use of landfill waste with a plasma reactor. Thus, on the basis of both a study of the\ud
literature and analysis of the empirical data collected through the research results show that currently\ud
complete closure is best and money affordable solution.\ud
Corn
Anthropogenic and natural influence on Divje and Račeva lake
Full text linkLakes are natural ecosystems that are daily exposed to pollution. The main culprits are the chemical\ud
elements phosphorus and nitrogen. Thankfully lakes have the ability to be cleaned by itself to a certain\ud
point. We call that the self-cleaning ability. Lake water pollution is caused by anthropogenic and natural\ud
environmental influences. The quantities of nitrogen and phosphorus are affected by rainfall, type of\ud
landscape, land use, level of urbanization, the number of households and the arrangement of drainage\ud
and wastewater treatment.In this diploma work, I interpret and compare Lake Račeva in the\ud
municipality of Logatec and Lake Divje jezero in Idrija. The aim was to calculate the indicative annual\ud
amounts of nitrogen and phosphorus that lakes get from their own catchment areas. The calculations are\ud
only indicative, because currently there are no analysis of water quality of lakes. On the web pages of\ud
ARSO I first sought information of the ten-year average amount of rainfall on a few of meteorological\ud
stations and determine the size and proportions of each land use in relation to the total surface\ud
hydrological areas of both lakes. With the help of guidelines from various authors I determined the\ud
quantities of two elements that contribute roads, hardened surfaces, household wastewater treatment\ud
plants, industry and agricultural land. I acquired quantities for each reservoir separately and compared\ud
the final results with each other.Because it is predominantly wooded area the forest also contributes the\ud
largest amount of nitrogen and phosphorus. Among the major emitters we can count the road and\ud
households which do not have drainage and cleaning waste water. The quantities of pollutants will be\ud
significantly reduced when the waste water will be discharged to the treatment plant and when water\ud
from busy roads will be retained in reservoirs