Filetype
This report contains a study of early deflections and crackingloads in precast prestressed hollow core slabs and the parameters affecting these. The objective of the report is, by conducting measurements of the modulus of elasticity and split-tension on the concrete, to compute the deflection and crackingloads for two types of hollow core slabs manufactured by the company Starka. The analysis is
A model for calculating crack widths in mesh reinforced shell structures with arbitrary directions of the reinforcement. The model is compiled into a spreadsheet for practical use. Comarative examples are made between new and traditional methods.
This report contains a study of thermal effects in concrete bridges. The purpose is to investigate the relevance of the temperature actions prescribed in the Swedish bridge standard, BRO 2002, for concrete bridges. The analyses are performed for a bridge cross-section model, exposed to climatic effects described by climate data for several Swedish locations. The program HEAT 2 was used to calculat
This study provides direct design equations that can be used for FRP reinforced beams with a rupture mode of FRP rupture. An analytical perspective to simplify calculations by developing exact and approximate set of closed form equations is used. This paper is collaboration between the Department of Civil engineering at Kansas State University in Manhattan Kansas and the Department of Structural E
This report contains a study of the interest and usage of visualisation and animation in the construction process. Through literature studies and conducting a visualisation of a planned reconstruction project have knowledge been gained about what a visualisation is and how it is done. To create an image of the knowledge and interest in the use of three dimensional CAD and visualisation in the cons
Using an inclined screw brings many advantages compared to traditional methods, e.g. high load-bearing capacity, fast and easy montage and high fire resistance. This report contains a study of the influence end- and edge distances have on the load-carrying capacity in joints with inclined screws. Tests were carried out in order to determine if a few of the end- and edge distances proposed by Kevar
This report contains a theoretical study concerning composite construct design with steel and concrete and its mechanical and thermal interaction. The two primary advantages with this composition are the increase of the load-carrying capacity and its fire resistance. Composite construct elements are often used in the building process and there are several companies that offer a complete framework
Calculated deformations in glulam beams caused by moisture are based on linear moisture profile, this does not reflect reality. This report contains of a study where the moisture induced deformations are measured in three different test setups, simulating more realistic moisture exposure. After the beams are seasoned in RH 30 and 95 % the climate was changed, one group was in a moistening phase an
Today´s society depend on electric energy, in nuclear power plants this can be produced. Each nuclear reactor is situated inside a concrete containment reinforced with a post-tensioning system. The aim of this report is to analyse the state of the post-tensioning systems at Ringhals nuclear power plant. The purpose of a containment is to protect the outside world if an accident should occur. Tight
The purpose of this research was to determine how much the strength reduces in a slant nailed connection, which was examined for horizontal loads between stud and bottom plate in an infill wall. Slant nailing is commonly used in the workplace and is an alternative to metal plate connectors as they are both more expensive and more time consuming. However, there are no Swedish or European standards
This paper presents two methods of shear capacity design in two-dimensional membrane elements. The aim in this thesis is to find a method who calculates one resulting transeverse reinforcement instead of two. A procedure (Unified Shear Theory by Collins and Mitchells) is presented for design of transverse reinforcement in two-way concrete slabs. This procedure is compared to the Swedish procedure
Today, the knowledge about ice forces in Sweden is uncertain. Certain guidelines have been developed according to RIDAS to determine ice forces when constructing dams, piers etc. In this thesis an environmental model has been developed to predict thermal ice pressures. The inputs for the model are; a) the mean daily air temperature for each day of the year; b) the snow cover depth. The mean daily
I samband med Södersjukhusets jobbannons från februari i år där Tv-seriesnygga sjuksköterskor söktes dök frågan upp huruvida arbetsgivaren kan ställa krav på arbetstagarnas utseende. Vilken rätt arbetsgivare faktiskt har att ställa krav på arbetstagarnas och arbetssökarnas utseende finns inte direkt uttryckt i lag. Istället finns det lagar och praxis som snarare hindrar arbetsgivaren att ställa vi
Foreign trade is an important part in Africa’s internationalization process. In order to assess the entrepreneurial possibilities in Sub Saharan Africa, one can look at firm’s probability of entering the export market. The aim of this paper is to examine the importance of sunk costs of exporting for Sub Saharan African firms. This is done by assessing the importance of past export performance on t
This report contains an analysis of major fatal fires. The analysis is carried out using the methodology in the conference article "Learning from real fire incidents - A methodology for case studies." The methodology is used to systematically introduce, analyse and draw joint conclusions of the various events. The aim is to find the key factors leading to the development of the events, i
Med det naturliga åldrandet följer ofta många hälsoproblem. Urininkontinens förekommer i alla åldrar, men problemet ökar med stigande ålder. Syftet med studien var att undersöka prevalens och svårighetsgrad av urininkontinens, relaterat till fysisk aktivitet och ADL hos äldre. Syftet var även att studera om det föreligger några eventuella könsskillnader. Resultatet visade att 266 (23 %) av 1141 be
This project is an collaboration with Höganäs AB, with the goal to design a light vehicle that meets the demands of the modern commuter, in function as well as in quality and sustainability. The result of the project is a light scooter using Höganäs E-Drive system, with Hydrogen Fuel Cells as the power source. The vehicle is designed to be adaptable to the user, while still being comfortable and e
Several studies have suggested effective climate information outreach is invaluable for smallholders’ decision-making on farming operations as a viable strategy to cope with extreme effects of climate change and increased productivity. Starting with the review of development and agriculture issues, this thesis seeks to investigate the knowledge and practice of improved agro-ecological techniques a
Bakgrund: Enligt statens beredning för medicinsk utvärdering uppskattas 1,8 miljoner av den vuxna befolkningen i Sverige ha förhöjt blodtryck. Grunden för behandling av högt blodtryck är förändring av levnadsvanor. Nationella riktlinjer för sjukdomsförebyggande metoder (2011) anger att rådgivning ska vara grunden för förändring av ohälsosamma levnadsvanor. För att kunna ge bästa möjliga rådgivning
