1,720,982 research outputs found
Production technology of expanded polystyrene foam.
No full textThe aim of the bachelor final work of civil engineering study program is to design the type of building assigned by the task using the knowledge acquired during university studies. Industrial building is designed to manufacture required products. The technological line and the schedule of production processes and operations are designed. Architectural and structural frameworks of the building are described. Reinforced concrete column is designed and required reinforcement is calculated, also U-value for the roof is calculated. Construction safety regulations are provided and the cost of the whole project is estimated. The engineering drawings are present: a production workshop, a cyclogram of technological equipment, cross-sectional views of the building, plot plans of the site and the ground floor, the reinforced concrete column
Production technology of reinforced concrete hollow core slabs.
No full textThe aim of this work is to describe and understand the technological manufacturing process of concrete pavement blocks, to design an industrial building in which the technological line will be installed and to calculate the payback period of such line. Research on construction laws and regulations are described in this work, same as architectural and structural framework of the building. Calculations for U-value of roof and precast concrete column are also prepared. Construction safety regulations are provided and the cost of the whole project is estimated. The engineering drawings are added: plans of the building site, the ground floor, production line and technological equipment; a cyclogram and operation length charts; cross-sectional views of the building; design of the precast concrete column
Research of self-leveling concrete compound composition.
No full textSelf-leveling concrete compound – building material which allows to speed up finishing work related to the floor. It is widely used in practice but it still remains costly. Varying components of the mixture can change certain properties of the product such as flow characteristics, shrinkage deformation or strength. It is possible to reduce price of final product by changing components of the mixture. In this master final work different configurations of mixtures are being generated by changing the most expensive component aluminate cement to a cheap slag cement. All configurations are tested for flow characteristics, compressive strength, flexural strength evaluating whether the product does not lose the basic self-leveling compounds properties
Investigation of photogrammetric 3D models application possibilities to determine bridges geometric characteristics.
No full textThe purpose of this master’s thesis is to investigate the geometric accuracy of 3D models based on reality capture technologies (LiDAR, photogrammetry) and to determine its use cases analysing bridge structures, capturing data using unmanned aerial vehicle. The thesis begins with a literature review that examines photogrammetry’s working principle and its use cases. Analyses factors that affect the accuracy of photogrammetric 3D models. Examines BIM methodology, determines BIM and photogrammetric 3D models' similarities and differences. Examines laser scanning technology and investigates reality capture technologies' possibility to determine constructions defects. There are two case studies in the second part. The first case study's purpose is to investigate reality capture technologies possibilities to determine construction defects. The second case study's purpose is to investigate created photogrammetric 3D models' geometric accuracy. After establishing the geometric accuracy of photogrammetric 3D model possibilities of measuring constructions are investigated. Conclusions are given for the results
Foam polystyrene production technology.
No full textThe aim of polystyrene plant and describe their technology. To describe the entire production technology, select the necessary facilities. To create the soak time schedule. Solutions. Designed bungalows styrofoam factory, a length of 24,40 m, width 18.40 m. Total factory area - 432.00 m2 and a height of 9.25 m. Lot Size 3,187.50 m2. The factory is being built in the industrial city of Marijampole district. In addition to the plant designed for production storage area, office building. There is also provided, parking lots, building guards. Foam polystyrene is produced and packaged partially automated konvejerine- agregatinėje line. Packaged products are stored in the open field aikštelėje- porch. Results. The technological part describes the production technology. The plant working two shifts will produce 152,768 m3 of expanded polystyrene products per year. Factory construction of the plot, production equipment and its installation will need to 606,734.00 EUR, the investment to pay off in 2-3 years. During research work investigated the influence of cold, soggy Styrofoam
Possibilities of using building information modelling data to perform cost estimation in Lithuania.
No full textThe aim of the final work is to analyze the possibilities of using the data of building information modeling in Lithuania to determine the estimated price of construction. Targets to achieve the goal are to analyze the methods used in the selected foreign country to determine the price calculation, using the data of the building information model. To carry out a practical experimental study according to the applied methods, to try to apply those methods in Lithuania and to determine the possibilities of using the data. The work consists of three parts. The first part analyzes the 5D BIM dimension and the features of its implementation in Lithuania and in the world. The second part analyzes the methods used in Norway and a practical experimental study in Norway. Possibilities of price calculation in Lithuania are determined by conducting a practical experimental research according to the methods applied in Norway. The third part compares the results. Conclusions and recommendations are presented
Research of self leveling floor compound.
No full textSelf-leveling floor mixture is intended for mechanical or manual floor molding and it is ideal for concrete or sand-concrete floor leveling, updating, correction and reconstruction in multi-purpose industrial and public buildings. Floor installation works can be performed much more quickly - people can walk on them within a day. Mixture is intended to perform self-leveling layers that are directly related with the basis. Basic self-leveling floor materials: cement, sand, water and various admixtures. In final master work, it was reviewed the literature, which presents the factors influencing self-leveling flooring mixture distribution, additives influence on hardened mixture mechanical properties. The final master work examines the self-leveling floor compositions and their usage for construction, describes the materials used in self-leveling floor mixture technology. Final master work also presents the major admixtures groups and their influence on the main mixtures properties. Tests showed that when aluminous cement was completely changed into slag cement, it was received some better tests results. The final master work consists of an introduction, 4 chapters, final conclusions and references
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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