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Comparative Analysis of the Costs of Building Masonry Constructions with Different Material Characteristics : Undergraduate Thesis
No full textOvaj rad analizira troškove i karakteristike zidanja garaže koristeći različite materijale: Porotherm, Ytong, betonski blok, Durisol, Porotherm Izo. Uspoređivani su parametri poput čvrstoće, toplinske provodljivosti i cijene. Rezultati pokazuju da Porotherm Izo pruža najbolji balans između energetske učinkovitosti i čvrstoće, dok su ostali materijali povoljniji u određenim aspektima, ali manje optimalni u cjeliniThis paper analyzes the costs and characteristics of building a garage using different materials: Porotherm, Ytong, concrete block, Durisol, Porotherm Izo. Parameters such as strength, thermal conductivity and price were compared. The results show that Porotherm Izo provides the best balance between energy efficiency and strength, while other materials are more favorable in certain aspects, but less optimal overall
CO2 Emissions in the Operation of Construction Machinery for Earthworks : Undergraduate Thesis
No full textEmisije ugljikovog dioksida izazivaju značajan interes u istraživanju građevinske industrije zbog sve veće svijesti o učincima klimatskih promjena. Građevinarstvo je prepoznato kao jedan od ključnih sektora u Europskom zelenom planu čiji je cilj da do 2050. više nema neto emisija stakleničkih plinova. Ovaj rad analizira faktore koji utječu na emisije CO2 kod građevinskih strojeva za zemljane radove, kao što su vrsta goriva, oprema, operativni i gradilišni faktori. Na temelju učinkovitosti strojeva, prikazani su proračuni emisija CO2 te konkretni primjeri proračuna za rad bagera. Rad također ističe važnost smanjenja emisija CO2 kroz optimizaciju rada i održavanje građevinskih strojeva.Carbon dioxide emissions are a significant concern in construction industry research due to the growing awareness of climate change impacts. Construction is recognized as one of the key sectors in the European Green Deal, which aims to achieve net-zero greenhouse gas emissions by 2050. This work analyzes the factors affecting CO2 emissions from earthwork construction machinery, including fuel type, equipment, operational, and site factors. Based on machine efficiency, calculations of CO2 emissions are presented, along with specific examples of calculations for excavator operations. This work also highlights the importance of reducing CO2 emissions through the optimization and maintenance of construction machinery
Hydrological Analysis of Spring Flow on the Left Bank of Cetina: Rumin Mali, Rumin Veliki and Ruda Velika : Undergraduate Thesis
No full textU ovom završnom radu statički su obrađeni hidrološki podaci protoka izvora na lijevoj obali rijeke Cetine: Rumin Mali, Rumin Veliki i Ruda Velika, te meteorološki podaci oborina za postaju Livno za razdoblje od 1.1.2008.-31.12.2014. godine. Na temelju tih podataka izrađena je krivulja trajanja i krivulja učestalosti. Za izvore Rumin Mali, Rumin Veliki i Ruda Velika zadani su podaci od 2008.-2014. godine. Na temelju tih podataka napravljena je krivulja trajanja za svaki izvor kao i dnevne, mjesečne i godišnje korelacijske veze između oborina Livna i zadanih izvora, kao i izvora međusobno.In this final paper, the hydrological data of the flow of springs on the left bank of the Cetina River: Rumin Mali, Rumin Veliki, and Ruda Velika, and meteorological precipitation data for the station Livno for the period from 1.1.2008 to 31.12.2014 were statically processed. year. Based on these data, a duration curve and a frequency curve were created. For the springs Rumin Mali, Rumin Veliki, and Ruda Velika, the data from 2008-2014 is given. year. Based on these data, a duration curve was created for each source, as well as daily, monthly, and annual correlations between the Livno precipitation and the given sources, as well as between the sources
Analysis of the influence of time dependent strain on the load bearing capacity of aluminium columns exposed to transient heating : doctoral thesis
No full textU ovoj disertaciji analizira se utjecaj deformacije od puzanja na kritičnu brzinu i temperaturu otkazivanja aluminijskih stupova legure EN AW 6082 T6 izloženih nestacionarnom zagrijavanju. Nestacionarni model zagrijavanja predstavlja porast temperature uslijed konstantnoga opterećenja te na taj način simulira stvarnu situaciju prilikom požara. Trenutni propisi i norme za projektiranje aluminijskih konstrukcija na djelovanje požara ne uključuju detaljan prikaz razvoja deformacije od puzanja ni njezin utjecaj na redukciju nosivosti i brzinu otkazivanja stupova. S obzirom na znatan porast primjene aluminija i aluminijskih legura u građevinarstvu posljednjih pedesetak godina, potrebno je dodatno istražiti puzanje aluminijskih stupova jer oni spadaju u najosjetljiviji dio konstrukcije. U prilog potrebi za istraživanjem ide i činjenica da je najveća mana aluminija osjetljivost na visoke temperature jer njegove materijalne karakteristike opadaju već pri temperaturama iznad 100 °C. U uvodnom dijelu istraživanja prikazanoga u ovoj disertaciji kalibrirani su eksperimentalni rezultati na epruvetama aluminijske legure EN AW 6082 T6 kako bi se dobili parametri za odabrani model puzanja. Kalibrirani model puzanja primijenjen je na eksperimentalno-numeričku analizu dominantno tlačno opterećenih aluminijskih stupova izloženih nestacionarnom zagrijavanju. U nestacionarnim ispitivanja, upotrijebljena je niska brzina zagrijavanja jer simulira postojanje nekoga oblika protupožarne zaštite koji je zbog strogih propisa nužan u današnjim konstrukcijama. Na kraju rada provedena je parametarska analiza utjecaja niskih brzina zagrijavanja (1 °C/min – 5 °C/min) na stupove jednostavne aluminijske konstrukcije i analiziran je utjecaj deformacije od puzanja na vrijeme otkazivanja stupova. Navedena parametarska analiza provedena je na temelju usvojenoga modela puzanja utemeljenoga na rezultatima analize na aluminijskim epruvetama i na aluminijskim stupovima.This dissertation presents the analysis of the influence of creep strain on the critical speed and failure temperature of EN AW 6082 T6 aluminium columns exposed to transient heating. The model of transient heating represents an increase in temperature due to a constant load and thus simulates the real situation caused by fire. Current regulations for the design of aluminium structures exposed to fire do not include a detailed description of the development of creep strain and its influence on the reduction of load-bearing capacity and the rate of failure of the columns. Considering the significant increase in the use of aluminium and aluminium alloys in construction over the last fifty years, it is necessary to obtain a solid conclusion on the influence of creep on aluminium columns which stands for the most sensitive part of the structure. The biggest disadvantage of aluminium is its sensitivity to high temperatures since its material characteristics decrease already at temperatures above 100 °C, supporting the idea of this research. In the opening section of the research presented in this dissertation, the calibration of experimental results was carried out on test coupons of aluminium alloy EN AW 6082 T6 with the aim of obtaining parameters for the selected creep model. The calibrated creep model was applied to the experimental-numerical analysis of dominantly pressure-loaded aluminium columns exposed to transient heating. For transient tests, a low heating rate was applied because it simulates the existence of some form of fire protection that is obligatory in today's constructions due to strict regulations. The final part of the dissertation includes a parametric analysis of the influence of low heating rates (1 °C/min – 5 °C/min) of regular columns of simple aluminium construction and a comparison of the influence of creep strain on the failure time of the columns. The aforementioned parametric analysis was performed on the basis of the adopted creep model based on the results of the study carried out on aluminium test tubes and aluminium columns
Preparation of Proof of Measures and a Bill of Cost : Master's Thesis
No full textU ovom završnom radu bilo je potrebno na osnovu projektne dokumentacije izraditi dokaznicu mjera i troškovnik s kojim su obuhvaćeni grubi i završni građevinski radovi.In this final paper, it was necessary to draw up a proof of measure and a bill of cost based on the project documentation which includes rough and finished construction works
Construction of Parking Lot : Undergraduate Thesis
No full textU radu je obrađen hipotetski slučaj izgradnje parkirališta za kojeg je potrebno odrediti sve tehnološke procese, odabrati strojeve za svaku od aktivnosti u pojedinim procesima, te uskladiti njihov rad pri skidanju humusnog, širokom iskopu, zaštiti pokosa i izgradnji parkirališta s asfaltnom površinom. Cilj je postizanje što veće učinkovitosti poštujući sve norme i standarde pri gradnji.This paper discusses a hypothetical case of constructing a parking lot, for which it is necessary to determine all technological processes. Select machines for each of the activities within the individual processes and coordinate their work in removing topsoil, wide excavation, slope protection, and parking lot construction with asphalt surfacing. The goal is to achieve maximum efficiency while adhering to all construction norms and standards
Calculation of the Structure by the Methods of Lateral Forces, Pushover, Time History : Master's Thesis
No full textU diplomskom radu analizirana je konstrukcija zgrade s jezgrom od a-b zidova i omeđenih zidova na pročelju. Proveden je proračun nosive konstrukcije na potres prema tri metode: metoda bočnih sila, metoda naguravanja, metoda odgovora u vremenu. Uspoređeni su odgovori primijenjenih metoda.The thesis analyzed the construction of the building with a core of reinforced concrete walls and brick walls on the front. The calculation of the load-bearing structure against an earthquake was carried out according to three methods: the method of lateral forces, the pushover method, and the time history method. The answers of the applied methods were compare
Seismic Analysis of Reinforced Masonry Historic Towers by Finite-Discrete Element Method : Master's Thesis
No full textU ovom radu provedena je analiza utjecaja ojačanja na ponašanje povijesnih zidanih tornjeva izloženih seizmičkom opterećenju. Za numeričku analizu korišten je Y2D numerički program koji se temelji na kombiniraj metodi konačno-diskretnih elemenata. Potres na koji su tornjevi analizirani je zapis potresa u Petrovcu, Crna Gora, 1979. godine. Analiza je izvršena za dvije faze tornjeva: tornjevi s neojačanim i tornjevi s ojačanim karakteristikama materijala. Rezultat analize je prikazati rezultate graničnih stanja tornjeva.In this paper, an analysis of the influence of reinforcement on the behavior of historic masonry towers exposed to seismic load was carried out. For the numerical analysis, the Y2D numerical program based on the combined finite-discrete element method was used. The earthquake for which the towers were analyzed is a record of an earthquake in Petrovac, Montenegro in 1979. The analysis was performed for two phases of towers: towers with unreinforced and towers with reinforced material properties. The result of the analysis is to show the results of the limit states of the towers