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Development of the documentation for concluding the contract on the construction of the parking lot
No full textU diplomskom radu prikazan je detaljan postupak izrade dijela dokumentacije, odnosno izrada ponude za sklapanje Ugovora o radovima na izgradnji parkirališta. Diplomski rad izrađen je prema dokumentaciji o nabavi radova u otvorenom postupku javne nabave. U teorijskom dijelu rada opisan je standardni postupak izrade dijela dokumentacije o nabavi prilikom čega je bilo važno navesti i objasniti zakone koji se koriste. To su Zakon o gradnji, Zakon o obveznim odnosima i Zakon o javnoj nabavi. U drugom, odnosno praktičnom dijelu rada detaljno je prikazan postupak određivanja jediničnih cijena radova te ukupne cijene ponude, a osim toga tu je i postupak određivanja ukupnog vremena potrebnog za izvođenje radova. Osim izrade analize cijena, troškovnika i vremenskog plana, za kraj je prikazano kako bi promjena cijene rada strojeva utjecala na ukupnu cijenu izvođenja radova.The graduation thesis presents a detailed procedure for creating a part of the documentation, i.e. creating an offer for concluding a contract on the construction of the parking lot. The thesis was made according to the documentation on the procurement of construction works in an open public procurement procedure. In the theoretical part of the thesis, the standard procedure for creating a part of the procurement documentation was described, in which case it was important to state and explain the laws used. These are the Construction Act, the Civil Obligations Act, and the Public Procurement Law. In the second or practical part of the thesis, the procedure for determining the unit prices of the construction works and the total price of the offer is presented in detail. In addition, there is also a procedure for determining the total time required for the execution of the construction works. In addition to creating the price analysis, bill of quantities, and time plan, it was finally shown how a change in the price of the cost of operating the machines would affect the total cost of the construction works
Utjecaj tipa raskrižja na razinu prometne buke
No full textPrometna buka predstavlja značajan problem u urbanim područjima, s potencijalno štetnim učincima na ljudsko zdravlje i okoliš. Ovaj diplomski rad istražuje utjecaj tipa raskrižja na razinu prometne buke, uspoređujući semaforizirano raskrižje i kružni tok kao dva različita pristupa organizaciji prometa. Na dva raskrižja, semaforiziranom raskrižju i kružnom toku, u gradu Osijeku provedeno je mjerenje razina prometne buke putem mjerača razine zvuka, te je istovremeno provedeno snimanje prometnog toka putem video kamere. Rezultati istraživanja ukazuju na razlike u razini prometne buke između semaforiziranih raskrižja i kružnih tokova.Traffic noise is a significant problem in urban areas, with potentially harmful effects on human health and the environment. This graduate thesis investigates the influence of the type of intersection on the level of traffic noise, comparing a signalized intersection and a roundabout as two different approaches to traffic organization. At two intersections, a signalized intersection and a roundabout, in the city of Osijek, traffic noise levels were measured using a sound level meter, and at the same time, the traffic flow was recorded using a video camera. The results of the research indicate differences in the level of traffic noise between signalized intersection and roundabouts
The initial dynamic plan for the assembly of reinforced concrete halls
No full textTema diplomskog rada je izrada početnog dinamičkog plana armirano – betonske hale. Studija slučaja koja je poslužila za izradu ovog diplomskog rada, te po kojim je rađen plan je poslovni prostor investitora Avto Krka d.o.o., a građevinske radove je izvela tvrtka Mobeco iz Slovenije. Hala se sastoji od linijskih elemenata. Stupovi, nosači i grede povezani su u cjelinu čineći strukturu hale. Početak diplomskog rada obuhvaća općenite informacije o montažnoj gradnji. Nadalje se objašnjavaju vrste montažnih sklopova te ponajviše linijska struktura jer je upravo takva armirano – betonska hala koja se analizira u radu. Nakon općenitih informacija dolazi se do praktičkog dijela koji obuhvaća tehnologiju izvođenja radova, proračuna trajanja aktivnosti koji se odvijaju prilikom montaže te u konačnici do početnog dinamičkog plana. Kako bi se preglednije i jednostavnije prikazalo planirano napredovanje montaže hale, građevina je strukturno raščlanjena na elemente i potom na potrebne operacije. U planu je napravljeno niveliranje resursa te provjera alokacije svih resursa. Proračun trajanja aktivnosti izrađen je u programu Microsoft Excel, a izrada dinamičkog plana rađena je u programu Microsoft Project. Nakon svih proračuna izrađen je digitalni model (BIM) montaže hale u programu Autodesk Navisworks Manage, u kojem su elementi iz BIM modela povezani s dinamičkim planom.The topic of the master's thesis is the development of an initial dynamic plan for a reinforced concrete hall. The case study used for the preparation of this master's thesis, and upon which the plan was based, is the business premises of the investor Avto Krka d.o.o., with construction works carried out by the company Mobeco from Slovenia. The hall consists of linear elements, with columns, beams, and supports interconnected to form the structure of the hall. The beginning of the master's thesis encompasses general information about prefabricated construction. Furthermore, it explains the types of assembly assemblies, focusing primarily on the linear structure, as it is precisely such a reinforced concrete hall that is analyzed in the paper. After providing general information, the practical part is reached, which includes the technology of carrying out the work, the calculation of activity durations that occur during assembly, and ultimately the initial dynamic plan. To present the planned progress of the hall assembly in a more organized and straightforward manner, the structure is dissected into elements and then into necessary operations. The plan includes resource leveling and verification of resource allocation. The calculation of activity durations is performed in Microsoft Excel, and the creation of the dynamic plan is done using Microsoft Project. After all calculations, a digital assembly model (BIM) of the hall is created in Autodesk Navisworks Manage, where elements from the BIM model are linked to the dynamic plan
Massive concrete composition design
No full textU ovom završnom radu, općenito je opisan proces projektiranja sastava betona kao građevinskog materijala.Opisane su glavne karakteristike betona koje utječu na samu izvedbu poput čvrstoće i obradljivosti na koje možemo utjecati raznim postupcima i prilagodbama koje su opisane u radu. Jedna od glavnih problema masivnog betona je stvaranje površinskih pukotina pri sušenju i procesu hidratacije cementa. Sukladno opisanoj problematici su opisani načini projektiranja sastava uz pomoć korištenja kemijskih i mineralnih dodataka, modifikacijom količine cementa čime se utječe na smanjenje broja pukotina. Opisana su ispitivanja u kojima su navedeni i dokazani najbolji načini riješavanja istog problema.In this final paper, the process of designing concrete composition as a construction material is generally described. The main characteristics of concrete that affect the performance itself, such as strength and workability, which can be influenced by various procedures and adjustments described in the paper, are described. One of the main problems of solid concrete is the formation of surface cracks during drying and cement's hydration process. In accordance with the described problem, the methods of designing the composition are described with the help of using chemical and mineral additives by modifying the amount of cement, which affects the reduction of the number of cracks. Tests are described in which the best ways to solve the same problem are specified and proven
The K truss
No full textU završnom radu obrađena je tema rešetkastih nosača K ispune. Opisane su njihove karakteristike te njihova primjena. Objašnjen je pojam geometrijske nepromjenjivosti. Prikazane četiri metode rješavanja rešetkastih nosača. U daljem radu riješena su dva primjera izračuna sila u štapovima ovih nosača. Primjeri su najprije riješeni metodom čvorova, zatim Culmannovom metodom te metodom Rittera. Rezultati izračuna uspoređena su za svaki zadatak te je dat komentar na njihovo odstupanje. Svi rezultati provjereni su računalnom programu Autodesk Structural Analysis.In the final paper, the topic of truss supports with K filling. Their characteristics and their application are described. The concept of geometric invariance is explained. Shown are four methods of solving lattice girders. In further work, two examples of force calculation in the rods of these supports were solved. The examples were first solved using the knot method, then the Culmann method and the Ritter method. The calculation results were compared for each task and a comment was given on their deviation. All results were verified in the computer program Autodesk Structural Analysis
Seismic design of masonry building
No full textZavršni rad se sastoji od dva dijela, teorijskog i računskog. U teorijskom dijelu obrađen je dio o povijesnom pregledu zidanih konstrukcija, vrstama zidanih konstrukcija odnosno podjeli istih, primjenjivi materijali, mehaničkim karakteristikama ziđa, proračunska nosivost nearmiranog ziđa te seizmičko djelovanje. U računskom dijelu zadatka analizirana je troetažna zidana zgrada. Zgrada je projektirana kao sustav nearmiranog ziđa i zidana je opečnim zidnim elementima skupine 2 i mortom opće namjene M5. Izvršena je analiza opterećenja i proveden proračun vertikalne nosivosti. Na temelju osnovnog perioda vibriranja, i primjenom spektralne metode, određena je ukupna potresna sila i moment savijanja u ravnini ziđa te je izvršena njihova raspodjela po etažama zgrade.Thesis is compromised in two parts, theoretical and analytical. In theoretical part, overview of masonry constructions, classification of masonry, applicable materials, mechanical properties of masonry, design verifications and seismic actions are presented. Regarding the task of the final work, an object of arbitrary shape is processed, respectively a residential building with a gross construction area of 247m2, which consist of a ground floor and 2 floors. In analytical part, a three storey building was analyzed. Analyzed building is designed as a nonreinforced masonry, build with hollow clay masonry units and M5 general purpose mort. Gravity load actions were analyzed and axial load capacity was evaluated. Based upon the fundamental vibration period and spectral analysis, seismic actions are determined
The influence lines of statically determined systems
No full textZavršni rad iz kolegija Građevna statika 1, objašnjava što su utjecajne linije, rješava zadatke sa tri metode proračuna utjecajnih linija na statički određenim nosačima. Nakon toga odabiremo pokretna opterećenja iz propisa te ih postavljamo na nosač te određujemo kritično mjesto na kojemu će doći do maksimalnih momenata i poprečnih sila uz pomoć programskog paketa „Autodesk Robot Structural Analysis Professional 2020.“A final thesis for the course "Structural Mechanics 1" explains what influence lines are, solves problems using three methods for calculating influence lines on statically determinate beams. Afterward, we select moving loads from regulations and apply them to the beam to determine the critical location where maximum moments and shear forces will occur, using the software package "Autodesk Robot Structural Analysis.
Static analysis and design of reinforced concrete structure of an art gallery
No full textZadatak rada bio je statički proračunati i dimenzionirati armiranobetonsku dvokatnu konstrukciju umjetničke galerije. U ovom završnom radu uspoređeni su rezultati ručnog statičkog proračuna i proračuna provedenog primjenom računalnog programa za analizu građevinskih konstrukcija Tower 8. Oba proračuna su za ploče dala potrebne količine armature usvojene po minimalnoj potrebnoj količini. Prema proračunima može se ugraditi jednaka armaturna mreža iznad oslonaca i u polju. Odabrana armaturna mreža jednaka je za obje stropne ploče. Za poprečnu armaturu u polju oba proračuna zahtijevala su minimalnu potrebnu ugrađenu ploštinu armature. Količina poprečne i uzdužne armature u gredama iznad oslonca veća je nego u gredama u polju. Računalni proračun zahtijeva nešto manje ploštine uzdužne armature u poprečnom presjeku grede. Ručni proračun je konzervativan te zato određuje veću ploštinu armature u nekim poprečnim presjecima. Takvim proračunom postiže se veći stupanj sigurnosti konstrukcije
Utjecaj vrste i količine mikrovlakana na obradivost mikroarmiranog betona
No full textRad istražuje utjecaj vrste i količine mikrovlakana na obradivost mikroarmiranog betona. Analizirajući različite parametre kao što su tip mikrovlakana, njihova količina, duljina te prisutnost aditiva prikazano je kako ovi čimbenici utječu na konzistenciju i praktičnost rukovanja betonom. S posebnim fokusom na mikrovlakna od polipropilena, čelika, stakla i ugljika, istraženo je kako svaki od navedenih utječe na smanjenje obradivosti betona. Prema dobivenim rezultatima, zaključeno je kako precizno doziranje te pažjiv odabir mikrovlakana ima ključnu ulogu u osiguravanju odgovarajuće obradivosti mikroarmiranog betona, što omogućuje postizanje željenih tehničkih i estetskih karakteristika konstrukcije.The paper investigates the influence of the type and quantity of microfibers on the workability of microreinforced
concrete. By analyzing various parameters such as microfiber type, quantity, length, and the presence of additives, the study demonstrates how these factors affect the consistency and practicality of handling the concrete. With a special focus on microfibers made of polypropylene, steel, glass, and carbon, the research explores the impact of each on reducing concrete workability. Based on the obtained results, it is concluded that precise dosing and careful selection of microfibers play a crucial role in ensuring appropriate workability of micro-reinforced concrete, enabling the achievement of desired technical and aesthetic characteristics of the structure
Durability Performance and Thermal Resistance of Structural Self-Compacting Concrete Improved with Waste Rubber and Silica Fume
No full textWaste rubber takes many years to decompose, and thus the increasing number of tires in the world can be characterised as an important environmental issue, which generated the idea of implementing crumb rubber in structural self-compacting concrete (SCC). According to previous studies, up to 15% recycled rubber and 5% silica fume can be used to achieve the required properties of SCC in reinforced structural members with congested reinforcement, both in the fresh and hardened state. Most studies have focused on investigating the mechanical properties of self-compacting rubberised concrete (SCRC), and only a small number of studies investigated the durability and thermal properties, with contradictory findings. This study aims to determine the influence of crumb rubber and silica fume on the durability and thermal properties of SCC, with an emphasis on the selection of environmental exposure classes, the safety of using such a material in reinforced concrete members, and additional serviceability and durability requirements. This was further advanced by investigating the micro-structure of hardened SCC with recycled rubber and silica fume using a scanning electron microscope (SEM). Test results indicate that the combining effect of crumb rubber and silica fume has a positive impact on the thermal and durability properties of SCC